Round-trip flight from Washington
WAS to STL
Crowne Plaza Hotel St. Louis Airport By IHG
Bridgeton , 11228 Lone Eagle Drive
8652 Reviews3.5-Star Hotel
24% Package Savings
$560/person
$1,469 $1,119 total
Incl. Flight + Hotel
Flight Deals from Washington to St. Louis from $157
Bundle + Save
Top flight deals from leading airlines:
+100s more
+100s moreIncredible Deals
Save up to 50% on select flights with Priceline
Bundle & Save
Save an average of $240 per person when bundling your flight and hotel together with Priceline
Best Price Guarantee
If a VIP member finds a better price elsewhere, we’ll refund up to 200% of the difference
Help 24/7
We’re always here for you — reach us 24 hours a day, 7 days a week
Good to Know
Essential information to help you plan your flight from Washington to St. Louis.
Cheapest Flight Round-trip
$157
Cheapest price found on Priceline for this route in the last 16 days. Found 6 days ago.
$86 below the typical $243 round-trip on this route.
Outbound · Nov 18
7:48 amIADWashington Dulles Airport
5:42 pmSTLSt Louis Lambert International Airport
10h 54m · 1 stop via Atlanta (ATL)
Return · Nov 25
1:20 pmSTLSt Louis Lambert International Airport
8:40 pmIADWashington Dulles Airport
6h 20m · 1 stop via Orlando (MCO)
Cheapest Flight One-way
$171
Lowest one-way price found on Priceline for this route in the last 16 days. Found 10 days ago.
The typical one-way fare on this route is $195.
Outbound · Nov 1
6:00 pmDCAReagan Washington National Airport
7:14 pmSTLSt Louis Lambert International Airport
26h 14m · 1 stop via Denver (DEN)
Cheapest Nonstop
$228
Cheapest nonstop found on Priceline for this route in the last 16 days. Found 8 days ago.
You could save 12h 49m of travel time for just $71 more.
Outbound · Nov 2
8:25 amDCAReagan Washington National Airport
9:55 amSTLSt Louis Lambert International Airport
2h 30m · Nonstop
Return · Nov 9
7:55 pmSTLSt Louis Lambert International Airport
10:50 pmDCAReagan Washington National Airport
1h 55m · Nonstop
Good deal price
$238
A round-trip at or under $238 is a good deal on this route right now.
75% of the fares we found on this route cost more; only a quarter cost less.
Timing Your Trip
The best day, time of day, season and booking window for this route.
Best day to fly
Saturdays
Saturday departures average $256 on this route, the lowest of any weekday.
$22 less than the average weekday, which is $278.
Best time to fly
Mornings
Morning departures average $263 on this route, the lowest of any time of day.
$18 less than the average departure, which is $281.
Low season
January
Fares average $206 in January, the cheapest month to fly this route, bottoming out near $203 in late January.
$29 below the yearly average of $235.
When to book
4 weeks ahead
Fares on this route are lowest when booked about 4 weeks before departure.
Booking then averages $157, versus $200 in the final days before the flight.
Price Drop Deals
Priceline is always monitoring flight prices on this route. When we spot an offer on a specific flight that’s significantly lower than what that flight usually sells for, we call it out here as a price drop.
BWISTL
40% Price DropFrontier Airlines
Depart Nov 6 · Return Nov 9
3-night trip · economy
$384now only$231Round-trip
DCASTL
24% Price DropUnited Airlines
Depart Oct 29 · Return Nov 1
3-night trip · economy
$309now only$234Round-trip
DCASTL
24% Price DropUnited Airlines
Depart Nov 19 · Return Nov 22
3-night trip · economy
$312now only$236Round-trip
DCASTL
24% Price DropAmerican Airlines
Depart Dec 1 · Return Dec 5
4-night trip · economy
$312now only$237Round-trip
IADSTL
30% Price DropUnited Airlines
Depart Nov 6 · Return Nov 9
3-night trip · economy
$342now only$241Round-trip
DCASTL
21% Price DropUnited Airlines
Depart Nov 22 · Return Nov 27
5-night trip · economy
$312now only$248Round-trip
DCASTL
20% Price DropUnited Airlines
Depart Nov 6 · Return Nov 9
3-night trip · economy
$312now only$250Round-trip
DCASTL
17% Price DropSouthwest Airlines
Depart Nov 23 · Return Nov 27
4-night trip · economy
$312now only$260Round-trip
DCASTL
17% Price DropUnited Airlines
Depart Nov 5 · Return Nov 8
3-night trip · economy
$312now only$260Round-trip
BWISTL
15% Price DropAmerican Airlines
Depart Dec 3 · Return Dec 6
3-night trip · economy
$384now only$326Round-trip
BWISTL
12% Price DropUnited Airlines
Depart Oct 29 · Return Nov 2
4-night trip · economy
$384now only$337Round-trip
Express Deal
Express Deals® deliver Priceline’s biggest discounts on flights. Pick your route and dates and we’ll match you with a great offer from a trusted airline. These exclusive “mystery deals” reward flexibility with even deeper savings — your airline is revealed after you book.
We don’t use Express Deal prices when calculating this route’s lowest price or price averages, because these offers require extra flexibility from travelers.
BWISTL
BUDGET FRIENDLY
You’re guaranteed to get one of these airlines:
FrontierSouthwestAmericanUnitedDepart Nov 3 · Return Nov 10
7-night trip · economy
$263Round-trip
BWISTL
BUDGET FRIENDLY
You’re guaranteed to get one of these airlines:
FrontierSouthwestAmericanUnitedDepart Oct 24
economy
$251One-way
BWISTL
BUDGET FRIENDLY
You’re guaranteed to get one of these airlines:
FrontierSouthwestAmericanUnitedDepart Oct 27
economy
$251One-way
Frontier Airlinesfound Oct 1411/18/26
7:48 am
IADWashington Dulles Airport
11/18/26
5:42 pm
STLSt Louis Lambert International Airport
11/25/26
1:20 pm
STLSt Louis Lambert International Airport
11/25/26
8:40 pm
IADWashington Dulles Airport
$157
Frontier Airlinesfound Oct 1411/18/26
7:48 am
IADWashington Dulles Airport
11/18/26
5:42 pm
STLSt Louis Lambert International Airport
11/25/26
3:04 pm
STLSt Louis Lambert International Airport
11/26/26
12:59 pm
DCAReagan Washington National Airport
$157
Frontier Airlinesfound Oct 1411/18/26
7:00 am
DCAReagan Washington National Airport
11/18/26
3:23 pm
STLSt Louis Lambert International Airport
11/25/26
1:20 pm
STLSt Louis Lambert International Airport
11/25/26
8:40 pm
IADWashington Dulles Airport
$196
Frontier Airlinesfound Oct 1411/18/26
7:00 am
DCAReagan Washington National Airport
11/19/26
10:45 am
STLSt Louis Lambert International Airport
11/25/26
1:20 pm
STLSt Louis Lambert International Airport
11/25/26
8:40 pm
IADWashington Dulles Airport
$196
BUNDLE + SAVE
Book a flight & hotel together for extra savings.
On average save $240 per traveler
Southwest Airlinesfound Oct 1111/02/26
8:25 am
DCAReagan Washington National Airport
11/02/26
9:55 am
STLSt Louis Lambert International Airport
11/09/26
7:55 pm
STLSt Louis Lambert International Airport
11/09/26
10:50 pm
DCAReagan Washington National Airport
$228
American Airlinesfound Oct 1111/02/26
8:03 pm
DCAReagan Washington National Airport
11/02/26
9:38 pm
STLSt Louis Lambert International Airport
11/09/26
7:00 am
STLSt Louis Lambert International Airport
11/09/26
10:08 am
DCAReagan Washington National Airport
$231
Frontier Airlinesfound Oct 1411/18/26
1:00 pm
DCAReagan Washington National Airport
11/19/26
10:45 am
STLSt Louis Lambert International Airport
11/25/26
3:04 pm
STLSt Louis Lambert International Airport
11/26/26
12:59 pm
DCAReagan Washington National Airport
$196
Southwest Airlinesfound Oct 1111/02/26
6:55 pm
DCAReagan Washington National Airport
11/02/26
8:25 pm
STLSt Louis Lambert International Airport
11/09/26
7:55 pm
STLSt Louis Lambert International Airport
11/09/26
10:50 pm
DCAReagan Washington National Airport
$228
American Airlinesfound Oct 1411/18/26
1:44 pm
DCAReagan Washington National Airport
11/18/26
3:21 pm
STLSt Louis Lambert International Airport
11/25/26
10:38 am
STLSt Louis Lambert International Airport
11/25/26
1:44 pm
DCAReagan Washington National Airport
$231
Frontier Airlinesfound Oct 1411/18/26
7:00 am
DCAReagan Washington National Airport
11/18/26
3:23 pm
STLSt Louis Lambert International Airport
11/25/26
3:04 pm
STLSt Louis Lambert International Airport
11/26/26
12:59 pm
DCAReagan Washington National Airport
$196
No flights match these filters.
Top Deals on flights from Washington to St. Louis
Washington, US (WAS) - St. Louis, US (STL)
Frontier AirlinesNov 18
7:48 am
IADWashington Dulles Airport
Nov 18
5:42 pm
STLSt Louis Lambert International Airport
Search More
as low as
$157Washington, US (WAS) - St. Louis, US (STL)
Frontier AirlinesNov 18
7:48 am
IADWashington Dulles Airport
Nov 18
5:42 pm
STLSt Louis Lambert International Airport
Search More
as low as
$157Washington, US (WAS) - St. Louis, US (STL)
Frontier AirlinesNov 1
6:00 pm
DCAReagan Washington National Airport
Nov 2
7:14 pm
STLSt Louis Lambert International Airport
Search More
as low as
$171Washington, US (WAS) - St. Louis, US (STL)
Southwest AirlinesNov 1
12:00 pm
DCAReagan Washington National Airport
Nov 1
1:25 pm
STLSt Louis Lambert International Airport
Search More
as low as
$173Washington, US (WAS) - St. Louis, US (STL)
Southwest AirlinesNov 1
2:40 pm
DCAReagan Washington National Airport
Nov 1
4:05 pm
STLSt Louis Lambert International Airport
Search More
as low as
$173Washington, US (WAS) - St. Louis, US (STL)
Southwest AirlinesNov 1
6:55 pm
DCAReagan Washington National Airport
Nov 1
8:25 pm
STLSt Louis Lambert International Airport
Search More
as low as
$173Washington, US (WAS) - St. Louis, US (STL)
Southwest AirlinesNov 1
8:25 am
DCAReagan Washington National Airport
Nov 1
9:55 am
STLSt Louis Lambert International Airport
Search More
as low as
$173Washington, US (WAS) - St. Louis, US (STL)
American AirlinesNov 1
8:03 pm
DCAReagan Washington National Airport
Nov 1
9:38 pm
STLSt Louis Lambert International Airport
Search More
as low as
$176Washington, US (WAS) - St. Louis, US (STL)
American AirlinesNov 1
8:11 am
DCAReagan Washington National Airport
Nov 1
9:55 am
STLSt Louis Lambert International Airport
Search More
as low as
$176Washington, US (WAS) - St. Louis, US (STL)
Southwest AirlinesNov 1
6:10 am
DCAReagan Washington National Airport
Nov 1
10:05 am
STLSt Louis Lambert International Airport
Search More
as low as
$183Washington, US (WAS) - St. Louis, US (STL)
Southwest AirlinesNov 1
7:35 pm
DCAReagan Washington National Airport
Nov 1
11:55 pm
STLSt Louis Lambert International Airport
Search More
as low as
$183Washington, US (WAS) - St. Louis, US (STL)
Southwest AirlinesNov 1
3:55 pm
DCAReagan Washington National Airport
Nov 1
8:55 pm
STLSt Louis Lambert International Airport
Search More
as low as
$183Best St. Louis Hotel + Flight Packages
Washington - St. Louis packages
Round-trip flight from Washington
WAS to STL
Hyatt Regency St Louis at The Arch
Saint Louis, 315 Chestnut St
8.45,144 Reviews4-Star Hotel
4% Package Savings
$1,007/person
$2,090 $2,014 total
Incl. Flight + Hotel
Round-trip flight from Washington
WAS to STL
Pear Tree Inn St. Louis Union Station
St. Louis, 2211 Market Street
8.42,707 Reviews3-Star Hotel
15% Package Savings
$674/person
$1,589 $1,347 total
Incl. Flight + Hotel
Round-trip flight from Washington
WAS to STL
Quality Inn Saint Louis Airport
Saint Louis, 10232 Natural Bridge Road
5.6962 Reviews2.5-Star Hotel
10% Package Savings
$542/person
$1,209 $1,083 total
Incl. Flight + Hotel
Round-trip flight from Washington
WAS to STL
Hilton St. Louis At The Ballpark
Saint Louis, 1 S Broadway
7.41,277 Reviews4-Star Hotel
36% Package Savings
$647/person
$2,008 $1,294 total
Incl. Flight + Hotel
Round-trip flight from Washington
WAS to STL
Renaissance St. Louis Airport Hotel
Saint Louis, 9801 Natural Bridge Road
8.11,226 Reviews4-Star Hotel
8% Package Savings
$736/person
$1,594 $1,472 total
Incl. Flight + Hotel
Round-trip flight from Washington
WAS to STL
Best Western St. Louis-Kirkwood Route 66
Saint Louis, 1200 South Kirkwood Road
7.91,945 Reviews3.5-Star Hotel
19% Package Savings
$573/person
$1,413 $1,145 total
Incl. Flight + Hotel
Round-trip flight from Washington
WAS to STL
Marriott St. Louis Grand
Saint Louis, 800 Washington Avenue
8.2902 Reviews4-Star Hotel
4% Package Savings
$938/person
$1,952 $1,876 total
Incl. Flight + Hotel
Best St. Louis Hotel + Flight + Car Packages
Washington - St. Louis packages
Round-trip flight from Washington
WAS to STL
Quality Inn Saint Louis Airport
Saint Louis, 10232 Natural Bridge Road
5.6962 Reviews2.5-Star Hotel
Rental car included
Pick-up in STL
12% Package Savings
$736/person
$1,672 $1,472 total
Incl. Flight + Hotel + Car
Round-trip flight from Washington
WAS to STL
Hilton St. Louis At The Ballpark
Saint Louis, 1 S Broadway
7.41,277 Reviews4-Star Hotel
Rental car included
Pick-up in STL
32% Package Savings
$841/person
$2,472 $1,682 total
Incl. Flight + Hotel + Car
Round-trip flight from Washington
WAS to STL
Renaissance St. Louis Airport Hotel
Saint Louis, 9801 Natural Bridge Road
8.11,226 Reviews4-Star Hotel
Rental car included
Pick-up in STL
9% Package Savings
$934/person
$2,055 $1,867 total
Incl. Flight + Hotel + Car
Round-trip flight from Washington
WAS to STL
Best Western St. Louis-Kirkwood Route 66
Saint Louis, 1200 South Kirkwood Road
7.91,945 Reviews3.5-Star Hotel
Rental car included
Pick-up in STL
18% Package Savings
$767/person
$1,876 $1,534 total
Incl. Flight + Hotel + Car
Round-trip flight from Washington
WAS to STL
Marriott St. Louis Grand
Saint Louis, 800 Washington Avenue
8.2902 Reviews4-Star Hotel
Rental car included
Pick-up in STL
6% Package Savings
$1,131/person
$2,416 $2,262 total
Incl. Flight + Hotel + Car
Round-trip flight from Washington
WAS to STL
Crowne Plaza Hotel St. Louis Airport By IHG
Bridgeton , 11228 Lone Eagle Drive
8652 Reviews3.5-Star Hotel
Rental car included
Pick-up in STL
22% Package Savings
$754/person
$1,931 $1,507 total
Incl. Flight + Hotel + Car
Round-trip flight from Washington
WAS to STL
Hyatt Regency St Louis at The Arch
Saint Louis, 315 Chestnut St
8.45,144 Reviews4-Star Hotel
Rental car included
Pick-up in STL
6% Package Savings
$1,200/person
$2,552 $2,400 total
Incl. Flight + Hotel + Car
Round-trip flight from Washington
WAS to STL
Pear Tree Inn St. Louis Union Station
St. Louis, 2211 Market Street
8.42,707 Reviews3-Star Hotel
Rental car included
Pick-up in STL
16% Package Savings
$867/person
$2,051 $1,733 total
Incl. Flight + Hotel + Car
When is the cheapest time to fly?
Cheapest in late January at about $203
Fares from Washington to St. Louis are lowest in late January, around $203, and January is the cheapest month overall, averaging $206. They peak in late June at about $257, $54 more than the low. The yearly average is $235.
Show the data
| Month | Average fare | Early month | Late month |
|---|---|---|---|
| January | $206 | $210 | $203 |
| February | $215 | $210 | $220 |
| March | $240 | $234 | $246 |
| April | $240 | $245 | $236 |
| May | $245 | $243 | $248 |
| June | $253 | $249 | $257 |
| July | $248 | $251 | $245 |
| August | $230 | $237 | $225 |
| September | $226 | $219 | $234 |
| October | $238 | $243 | $233 |
| November | $235 | $229 | $241 |
| December | $242 | $231 | $253 |
How far in advance should I book?
Cheapest about 4 weeks out at $157
Book about 4 weeks before departure for the best fares from Washington to St. Louis, around $157. Booking in the final days before the flight costs about $200, $43 more. Booking six months ahead runs about $245.
Show the data
| Days before departure | Average fare |
|---|---|
| 180 days | $245 |
| 172 days | $241 |
| 164 days | $236 |
| 156 days | $232 |
| 148 days | $232 |
| 140 days | $227 |
| 132 days | $219 |
| 124 days | $211 |
| 116 days | $205 |
| 108 days | $200 |
| 100 days | $194 |
| 92 days | $187 |
| 84 days | $183 |
| 76 days | $180 |
| 68 days | $175 |
| 2mo | $168 |
| 52 days | $163 |
| 44 days | $163 |
| 36 days | $159 |
| 31 days | $157 |
| 28 days | $157 |
| 20 days | $166 |
| 12 days | $181 |
| 4 days | $194 |
| 0 days | $200 |
What's the cheapest day of the week to fly?
Saturday is the cheapest day of the week to fly from Washington to St. Louis. At $256 it is 8% cheaper than the average day. Monday is the most expensive day, 7% above average.
Show the data
| Day | Average fare |
|---|---|
| Sun | $297 |
| Mon | $298 |
| Tue | $275 |
| Wed | $267 |
| Thu | $263 |
| Fri | $289 |
| Sat | $256 |
When is the best time of day to fly?
Morning (5am - 12pm) is the cheapest time of day to fly from Washington to St. Louis. At $263 it is 6% cheaper than the average time. Afternoon (2pm - 5pm) is the most expensive time, 4% above average.
Show the data
| Time of day | Average fare |
|---|---|
| Morning | $263 |
| Midday | $280 |
| Afternoon | $293 |
| Evening | $289 |
| Late Night | $278 |
What do round-trip flights from Washington to St. Louis cost?
Share of fares in each price range, adjusted to current prices.
Show the data
| Price range | Share of fares |
|---|---|
| $100 to $200 | 18% |
| $200 to $300 | 33% |
| $300 to $400 | 20% |
| $400 to $500 | 17% |
| $500 to $600 | 7% |
| $600 to $700 | 3% |
| $700 and up | 2% |
Methodology: learn how we calculate these charts
The charts “When is the cheapest time to fly?”, “How far in advance should I book?”, “What's the cheapest day of the week to fly?” and “What do round-trip flights from Washington to St. Louis cost?” are built from the prices Priceline customers actually paid for flights on this route over the past 12 months or more.
Where a route has too few bookings to fill every point in a chart, we borrow the shape of the curve from a group of routes with similar price behavior and fit it to the fares booked on this route.
Because past fares don’t reflect today’s market, we then adjust the historical prices for current conditions such as inflation and fuel costs, using the round-trip fares found in recent searches on this route.
The chart “When is the best time of day to fly?” is calculated directly from the fares found in recent searches, not from historical bookings.
Frequently Asked Questions
Everything you need to know about flying from Washington to St. Louis.
What is the typical flight duration from Washington to St. Louis?
Flights from Washington to St. Louis cover about 720 miles. The typical nonstop flight takes about 2 hours 20 minutes outbound, while the return leg is about 2 hours, making the eastbound return about 20 minutes shorter.
Methodology
Flight times and distances come from our flight-schedule database, which combines published airline timetables, U.S. government schedule data from the Bureau of Transportation Statistics (BTS), and observed flight operations from the EUROCONTROL/OpenSky Open Performance Data Initiative (OPDI). The typical flight time is the median scheduled block time across all carriers on the route, computed the same way in both directions so the difference reflects prevailing winds rather than any change in method. Distance is the great-circle distance between the two airports, so the actual flown track is typically 2-5% longer.
Are there any direct flights from Washington to St. Louis?
Nonstop flights from Washington to St. Louis are currently scheduled by three carriers: Southwest and American from Reagan National (DCA), and United from Dulles (IAD). Southwest runs 28 weekly flights daily, United runs 14 weekly flights daily, and American's service totals 18 weekly flights, mostly daily but with some frequencies operating only on weekdays and Sunday. All three airlines fly the route every day of the week.
Methodology
Airlines and weekly frequencies are compiled from our flight-schedule database, which combines published airline timetables, U.S. government schedule data from the Bureau of Transportation Statistics (BTS), and observed flight operations from the EUROCONTROL/OpenSky Open Performance Data Initiative (OPDI). We count each operating carrier's scheduled weekly departures and the days it flies; where there is no nonstop service, connecting carriers are identified by linking scheduled nonstop segments through common hub airports. Where a median fare is shown for a carrier, it reflects the real fares Priceline users found on this route in the last 72 hours.
What are the ground transportation options in St. Louis?
St. Louis Lambert International Airport (STL) is about 15 miles northwest of downtown, and MetroLink light rail is the most-used and most affordable option, running directly from the airport to downtown with frequent service. Taxis and rideshares like Uber and Lyft provide curbside pickup at both terminals, with taxi fares to downtown typically $30–45. Rental cars from Alamo, Avis, Budget, Dollar, Enterprise, Hertz, National, and Thrifty are available via a free shuttle from the Rental Car Center. Hotel shuttles and intercity bus service from Greyhound at the airport add further choices, while the fastest door-to-door option is usually a rideshare or taxi, though MetroLink is the best value and most popular for city-center access.
References
- Parking & Transportation - St. Louis Lambert International Airport
- St. Louis Transportation | Soul Of America | St. Louis
- St Louis Public Transportation and Airport Options
- A Guide to St. Louis Lambert International Airport (STL) | Chase
- How to get from St Louis Airport (STL) to Saint Louis, MO | Uber
- St Louis Airport Transfers: Pickup & Shuttle
- Find cheap flights to Saint Louis (STL) | American Airlines
When is the cheapest time to fly from Washington to St. Louis?
Fares from Washington to St. Louis are lowest in late January, around $203. January is the cheapest month overall, averaging $206, followed by February ($215) and September ($226). June is the most expensive month at about $253, and fares peak in late June at about $257. The yearly average is $235. Fares are adjusted to current market conditions.
Methodology
Seasonal fares come from Priceline's own air booking-summary archive, analysed in-house and refreshed monthly. For each day of the year we take a representative round-trip fare, a blend of the 25th-percentile and average ticket price over the route's bookings, and smooth the series into a seasonal curve; the half-month low and high and the monthly figures quoted here are averages of that curve. Thin and international routes borrow their seasonal shape from the nearest busy routes, with the price level anchored to the route's own bookings.
How far in advance should I book tickets from Washington to St. Louis?
Book about 4 weeks before departure for the best fares from Washington to St. Louis, around $157. Booking in the final days before the flight costs about $200, $43 more. Booking six months ahead runs about $245. Fares are adjusted to current market conditions.
Methodology
Booking-window guidance comes from the same monthly in-house analysis of Priceline's own air booking-summary archive. We aggregate the route's bookings by how many days before departure they were made, from about 180 days out to the day of travel, smooth the curve, and highlight the stretch of lead times with the lowest average fare. Thin and international routes borrow the curve shape from the nearest busy routes, anchored to the route's own price level. It reflects current fares and is refreshed monthly.
Are overnight (red‑eye) flights available from Washington to St. Louis?
There are no nonstop red-eye flights from Washington to St. Louis, but connecting overnight itineraries do exist. One option departs Orlando at 10:55 PM on Southwest, landing in St. Louis at 12:35 AM — in the early hours after midnight — after a connection in Orlando.
Methodology
Red-eye flights are identified from scheduled local departure and arrival times and block times in our flight-schedule database — built from published airline timetables and official schedule data, including U.S. Department of Transportation records for domestic routes. A flight counts as a red-eye when it departs in the afternoon or evening (3 p.m. or later local time) or in the early hours before 4 a.m., and is in the air at some point between midnight and 4 a.m. local time at both its departure airport and its arrival airport. An evening flight that lands before midnight at its destination is never counted, nor is a morning departure or a daytime long-haul that reaches the next calendar date only because of time zones. Each red-eye is labelled with its timing (for example, overnight and landing the next morning, or late-night and landing after midnight). For connecting itineraries the same rule is applied to the longer leg, from one representative day's flight search.
Which airlines usually operate this route from Washington to St. Louis?
Southwest Airlines, United Airlines, and American Airlines operate nonstop service from Washington to St. Louis, with Southwest offering 28 weekly flights from Reagan National, United 14 from Dulles, and American around 18 across its mainline and regional partners. Southwest flies daily with departures from early morning through evening, while United operates twice daily and American runs daily service plus several weekday-only frequencies. Specific median fares for these carriers aren't part of the schedule picture here.
Methodology
Airlines and weekly frequencies come from our flight-schedule database, which combines published airline timetables, U.S. government schedule data from the Bureau of Transportation Statistics (BTS), and observed flight operations from the EUROCONTROL/OpenSky Open Performance Data Initiative (OPDI). We count each operating carrier's scheduled weekly departures and the days it flies; where there is no nonstop service, connecting carriers are identified by linking scheduled nonstop segments through common hub airports. Where a typical fare is shown for a carrier, it is the median of the real fares Priceline users found on this route in the last 72 hours.
How reliable are on‑time arrivals on this route from Washington to St. Louis?
On-time arrival reliability from Washington to St. Louis varies meaningfully by carrier: American Eagle operated by Republic leads at 87% with zero cancellations, Southwest follows at 76%, American mainline at 74%, and American Eagle operated by PSA at 63% with an 8.9% cancellation rate. Travelers on United or Envoy-operated flights should note those carriers don't have published reliability figures for this route.
Methodology
On-time arrival and cancellation rates come from the U.S. Bureau of Transportation Statistics (BTS) Airline On-Time Performance dataset, which covers U.S. domestic routes only; a flight counts as on time when it arrives within 15 minutes of schedule. Carriers are ranked by arrival on-time rate on this route, and the carrier list itself comes from our flight-schedule database, which combines published airline timetables, U.S. government schedule data from the Bureau of Transportation Statistics (BTS), and observed flight operations from the EUROCONTROL/OpenSky Open Performance Data Initiative (OPDI).
Which airport should I use in St. Louis?
St. Louis Lambert International Airport is the only major commercial airport serving the city and the one you should use. It is about 14 miles northwest of downtown and handles all scheduled passenger flights for the region.
How do I get to Washington Dulles International Airport from the city center?
From downtown Washington, the WMATA Metrorail Silver Line is the most popular and economical way to reach Dulles, with a station connected directly to the main terminal and trains running every 15 minutes for about 47 minutes. Metrobus Route 5A and the Washington Flyer Silver Line Express shuttle to the Wiehle-Reston East Metro station offer cheaper bus alternatives, while taxis (typically around $65) and ride-share services like Uber and Lyft provide faster door-to-door trips in 30 to 60 minutes depending on traffic. Driving and parking at the airport is also an option for those who prefer their own vehicle, though it costs more than public transit.
References
- IAD Airport Transportation | Black Car, SUV & Van | SuperShuttle
- Book Flights to Washington DC | Turkish Airlines ®
- Flüge nach Washington DC | Turkish Airlines ® | Stadtführer
- How to get from Dulles Airport (IAD) to Washington, DC | Uber
- Washington Dulles Airport (IAD) to Washington DC Trains | 7-Day Timetable
- Transfer Washington City Center to Dulles Airport (IAD) in Washington Dc, USA - 20 minutes to 1 hour - 138165P370 - Trip Canvas
- flydulles.com - Portuguese (Português)
- flydulles.com - Simplified Chinese (简体中文)
Are there hotels or sleeping facilities at St. Louis airport?
There is no hotel directly connected to the St. Louis airport terminal. Several hotels sit within a short drive, including the Marriott St. Louis Airport just 0.3 miles away and the Hilton St. Louis Airport 0.6 miles away, both of which offer complimentary shuttle service to the terminals.
References
- 15 Best Hotels near Lambert St Louis Intl Airport (STL) for 2026 | U.S. News Travel
- Places to Stay | Marriott – St. Louis Airport
- St. Louis Lambert Airport Guide (STL) - Sleeping in Airports
- St Louis Lambert Intl Airport Overview and FBOs (St Louis, MO) [KSTL/STL] - FlightAware
- Hotels near St. Louis Airport | Renaissance St. Louis Airport Hotel
- Places to Stay | Hilton St. Louis Airport
What facilities and services are available to travelers at St. Louis Lambert International Airport?
St. Louis Lambert International Airport offers free Wi-Fi in 4-hour sessions, with mobile charging points available in gate areas. ATMs are located throughout the terminals, and a US Bank branch in Terminal 1 provides full-service banking and currency exchange. Family Assist rooms are near restrooms, a children's play area called the St. Louis International Play Port is near Gate C3, and interfaith chapels are available in both terminals. Permanent and rotating art exhibits are displayed throughout the terminals, and service animal relief areas are located near Gate A16 and outside both terminals. No duty-free shops or showers are available.
References
- St. Louis Lambert Airport Guide (STL) - Sleeping in Airports
- Shop, Dine & Services - St. Louis Lambert International Airport
- DT-442-STL-2024-map-T1-sg16
- St. Louis Lambert International Airport
- St Louis Airport (STL) | Terminal maps | Airport guide
- STL Airport Guide - All About St. Louis International Airport
- Google Maps
- ST. LOUIS LAMBERT INTERNATIONAL AIRPORT - STL - Updated September 2026 - 1338 Photos & 1094 Reviews - 10701 Lambert International Blvd, Saint Louis, Missouri - Airports - Phone Number - Yelp
Are there accessible services or children's facilities at the Washington and St. Louis airports?
Washington Dulles International Airport provides wheelchair assistance that travelers arrange through their airline, accessible shuttle buses and rental car shuttles with ramps or lifts, accessible parking spaces, and a Hidden Disabilities Sunflower Program with lanyards available at the USO Lounge and information desks between 8:00 AM and 8:00 PM daily. Lambert–St. Louis International Airport offers wheelchair assistance, accessible restrooms, elevators, service animal relief areas, specialized TSA lanes for persons with disabilities, and a staffed Information and Paging Booth from 7:00 AM to 11:00 PM daily with visual paging for hearing-impaired travelers. At St. Louis, the Terminal 2 MetroLink station elevator is out of service, so wheelchair or mobility device users should use the Terminal 1 station and the airport terminal shuttle instead. Travelers should arrange wheelchair assistance through their airline at either airport before their flight.
What aircraft are typically used on flights from Washington to St. Louis?
Southwest Airlines uses Boeing 737 family aircraft, including the 737-700, on flights from Washington to St. Louis. American Airlines operates Airbus A319s, while American Eagle flights are flown by PSA Airlines with Bombardier CRJ-900s and by Republic Airways with Embraer E175s. United Express service, operated by GoJet Airlines, uses Bombardier CRJ-700s.
Methodology
Aircraft types come from our flight-schedule database, which combines published airline timetables, U.S. government schedule data from the Bureau of Transportation Statistics (BTS), and observed flight operations from the EUROCONTROL/OpenSky Open Performance Data Initiative (OPDI). For U.S. routes the type is grounded in the tail number that actually operated the flight; elsewhere it comes from the airline's filed equipment code. Where the source does not commit to a specific variant we name the aircraft family (for example Airbus A320 family) rather than guess, and where no reliable type is on file the aircraft is omitted rather than estimated. Types describe typical scheduled equipment and can vary with seasonal or day-of-week assignments and last-minute swaps.
Which airline alliances serve flights from Washington to St. Louis?
On the Washington to St. Louis route, United Airlines (Star Alliance) and American Airlines (oneworld) fly nonstop, the latter with regional operators under its brand. Southwest Airlines also flies the route nonstop but belongs to no alliance, and other alliances may reach St. Louis via connections.
Methodology
Airlines and weekly frequencies are compiled from our flight-schedule database, which combines published airline timetables, U.S. government schedule data from the Bureau of Transportation Statistics (BTS), and observed flight operations from the EUROCONTROL/OpenSky Open Performance Data Initiative (OPDI). We count each operating carrier's scheduled weekly departures and the days it flies; where there is no nonstop service, connecting carriers are identified by linking scheduled nonstop segments through common hub airports. Where a median fare is shown for a carrier, it reflects the real fares Priceline users found on this route in the last 72 hours.
What are the best airport lounge options when departing from Washington?
Washington Dulles International Airport has 13 operational lounges across the Main Terminal and four concourses. The Capital One Lounge in the Main Terminal offers paid walk-up access for any traveler and provides grab-and-go food plus a full-service coffee bar, while three United Clubs are located near gates C7, C17, and D8. The Etihad Lounge in Concourse A features local food and beverages, a curated wine list, private bathrooms, and bookable showers, and the Virgin Atlantic Clubhouse and Turkish Airlines Lounge are also available in Concourses A and B respectively.
References
- Washington Dulles Airport (IAD) Lounge Guide
- Airport Lounges at Washington Dulles International Airport [IAD]
- Lufthansa Business Lounge (Temporarily Closed) at Washington Dulles International Airport | Amex US
- Airport lounges at Washington Dulles International Airport (IAD) — The Points Party
- Capital One Lounge - IAD | flydulles.com
- The Etihad Lounge at Washington Dulles International Airport (IAD)
- Washington D.C. Airport | Lounges | At the Airport | Travel Information | ANA
- Washington Dulles International Airport IAD Lounges - IAD Airport Guide and lounges. | Priority Pass
Are same‑day changes or standby possible on this route?
Same‑day changes and standby are offered on this route depending on the airline and fare purchased; flexible and premium tickets typically allow them, while Basic Economy does not.