St. Louis — flights from Houston to St. Louis

Flight Deals from Houston to St. Louis from $115

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Good to Know

Essential information to help you plan your flight from Houston to St. Louis.

Timing Your Trip

The best day, time of day, season and booking window for this route.

Price Drop Deals

Southwest AirlinesSouthwest Airlinesfound Oct 10
11/02/26
8:35 pm
HOUWilliam P Hobby Airport
2h 0m
11/02/26
10:35 pm
STLSt Louis Lambert International Airport
11/09/26
5:10 am
STLSt Louis Lambert International Airport
2h 5m
11/09/26
7:15 am
HOUWilliam P Hobby Airport
$208
Frontier AirlinesFrontier Airlinesfound Oct 10
11/02/26
6:05 am
IAHGeorge Bush Intercontinental Houston Airport
11h 35mATLHartsfield Jackson Atlanta International Airport
11/02/26
5:40 pm
STLSt Louis Lambert International Airport
11/09/26
1:28 pm
STLSt Louis Lambert International Airport
11h 16mLASHarry Reid International Airport
11/10/26
12:44 am
IAHGeorge Bush Intercontinental Houston Airport
$208
Southwest AirlinesSouthwest Airlinesfound Oct 10
11/02/26
12:15 pm
HOUWilliam P Hobby Airport
2h 0m
11/02/26
2:15 pm
STLSt Louis Lambert International Airport
11/09/26
5:10 am
STLSt Louis Lambert International Airport
2h 5m
11/09/26
7:15 am
HOUWilliam P Hobby Airport
$208
Frontier AirlinesFrontier Airlinesfound Oct 10
11/02/26
6:05 am
IAHGeorge Bush Intercontinental Houston Airport
11h 35mATLHartsfield Jackson Atlanta International Airport
11/02/26
5:40 pm
STLSt Louis Lambert International Airport
11/09/26
7:59 pm
STLSt Louis Lambert International Airport
13h 53mDENDenver International Airport
11/10/26
9:52 am
IAHGeorge Bush Intercontinental Houston Airport
$208
Flight plus hotel
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Book a flight & hotel together for extra savings.

On average save $240 per traveler

Southwest AirlinesSouthwest Airlinesfound Oct 10
11/02/26
7:20 am
HOUWilliam P Hobby Airport
2h 0m
11/02/26
9:20 am
STLSt Louis Lambert International Airport
11/09/26
5:10 am
STLSt Louis Lambert International Airport
2h 5m
11/09/26
7:15 am
HOUWilliam P Hobby Airport
$208
Frontier AirlinesFrontier Airlinesfound Oct 10
11/02/26
6:05 am
IAHGeorge Bush Intercontinental Houston Airport
11h 35mATLHartsfield Jackson Atlanta International Airport
11/02/26
5:40 pm
STLSt Louis Lambert International Airport
11/09/26
1:28 pm
STLSt Louis Lambert International Airport
15h 42mLASHarry Reid International Airport
11/10/26
5:10 am
IAHGeorge Bush Intercontinental Houston Airport
$208
American AirlinesAmerican Airlinesfound Oct 10
11/02/26
6:56 pm
IAHGeorge Bush Intercontinental Houston Airport
4h 37mDFWDallas Fort Worth International Airport
11/02/26
11:33 pm
STLSt Louis Lambert International Airport
11/09/26
7:06 pm
STLSt Louis Lambert International Airport
4h 10mDFWDallas Fort Worth International Airport
11/09/26
11:16 pm
HOUWilliam P Hobby Airport
$231
Southwest AirlinesSouthwest Airlinesfound Oct 10
11/02/26
2:55 pm
HOUWilliam P Hobby Airport
2h 0m
11/02/26
4:55 pm
STLSt Louis Lambert International Airport
11/09/26
5:10 am
STLSt Louis Lambert International Airport
2h 5m
11/09/26
7:15 am
HOUWilliam P Hobby Airport
$208
Frontier AirlinesFrontier Airlinesfound Oct 10
11/02/26
6:05 am
IAHGeorge Bush Intercontinental Houston Airport
11h 35mATLHartsfield Jackson Atlanta International Airport
11/02/26
5:40 pm
STLSt Louis Lambert International Airport
11/09/26
7:59 pm
STLSt Louis Lambert International Airport
28h 43mDENDenver International Airport
11/11/26
12:42 am
IAHGeorge Bush Intercontinental Houston Airport
$208
American AirlinesAmerican Airlinesfound Oct 14
11/18/26
9:58 am
HOUWilliam P Hobby Airport
4h 6mDFWDallas Fort Worth International Airport
11/18/26
2:04 pm
STLSt Louis Lambert International Airport
11/25/26
5:00 am
STLSt Louis Lambert International Airport
5h 22mORDChicago O Hare Airport
11/25/26
10:22 am
IAHGeorge Bush Intercontinental Houston Airport
$231

Top Deals on flights from Houston to St. Louis

Houston, US (HOU) - St. Louis, US (STL)

Frontier AirlinesFrontier Airlines

Oct 29

12:27 pm
IAHGeorge Bush Intercontinental Houston Airport
10h 49m1 stop · MCO

Oct 29

11:16 pm
STLSt Louis Lambert International Airport
Search More

as low as

$115

Houston, US (HOU) - St. Louis, US (STL)

Frontier AirlinesFrontier Airlines

Oct 29

4:49 pm
IAHGeorge Bush Intercontinental Houston Airport
19h 44m1 stop · LAS

Oct 30

12:33 pm
STLSt Louis Lambert International Airport
Search More

as low as

$115

Houston, US (HOU) - St. Louis, US (STL)

Frontier AirlinesFrontier Airlines

Oct 29

10:40 pm
IAHGeorge Bush Intercontinental Houston Airport
20h 34m1 stop · DEN

Oct 30

7:14 pm
STLSt Louis Lambert International Airport
Search More

as low as

$115

Houston, US (HOU) - St. Louis, US (STL)

Frontier AirlinesFrontier Airlines

Oct 29

2:49 pm
IAHGeorge Bush Intercontinental Houston Airport
21h 44m1 stop · LAS

Oct 30

12:33 pm
STLSt Louis Lambert International Airport
Search More

as low as

$115

Houston, US (HOU) - St. Louis, US (STL)

Frontier AirlinesFrontier Airlines

Oct 29

6:00 am
IAHGeorge Bush Intercontinental Houston Airport
30h 33m1 stop · LAS

Oct 30

12:33 pm
STLSt Louis Lambert International Airport
Search More

as low as

$115

Houston, US (HOU) - St. Louis, US (STL)

Frontier AirlinesFrontier Airlines

Oct 29

8:35 pm
IAHGeorge Bush Intercontinental Houston Airport
26h 41m1 stop · MCO

Oct 30

11:16 pm
STLSt Louis Lambert International Airport
Search More

as low as

$115

Houston, US (HOU) - St. Louis, US (STL)

Southwest AirlinesSouthwest Airlines

Oct 29

9:00 am
HOUWilliam P Hobby Airport
2h 0mNonstop

Oct 29

11:00 am
STLSt Louis Lambert International Airport
Search More

as low as

$134

Houston, US (HOU) - St. Louis, US (STL)

Southwest AirlinesSouthwest Airlines

Oct 29

7:15 am
HOUWilliam P Hobby Airport
2h 0mNonstop

Oct 29

9:15 am
STLSt Louis Lambert International Airport
Search More

as low as

$134

Houston, US (HOU) - St. Louis, US (STL)

Southwest AirlinesSouthwest Airlines

Oct 29

12:55 pm
HOUWilliam P Hobby Airport
2h 0mNonstop

Oct 29

2:55 pm
STLSt Louis Lambert International Airport
Search More

as low as

$134

Houston, US (HOU) - St. Louis, US (STL)

Southwest AirlinesSouthwest Airlines

Oct 29

8:25 pm
HOUWilliam P Hobby Airport
2h 5mNonstop

Oct 29

10:30 pm
STLSt Louis Lambert International Airport
Search More

as low as

$134

Houston, US (HOU) - St. Louis, US (STL)

American AirlinesAmerican Airlines

Oct 29

5:00 am
IAHGeorge Bush Intercontinental Houston Airport
4h 20m1 stop · DFW

Oct 29

9:20 am
STLSt Louis Lambert International Airport
Search More

as low as

$135

Houston, US (HOU) - St. Louis, US (STL)

American AirlinesAmerican Airlines

Oct 29

7:02 pm
IAHGeorge Bush Intercontinental Houston Airport
4h 40m1 stop · DFW

Oct 29

11:42 pm
STLSt Louis Lambert International Airport
Search More

as low as

$135

Best St. Louis Hotel + Flight Packages

Houston - St. Louis packages

Best St. Louis Hotel + Flight + Car Packages

Houston - St. Louis packages

When is the cheapest time to fly?

Cheapest in early February at about $202

Fares from Houston to St. Louis are lowest in early February, around $202, and February is the cheapest month overall, averaging $207. They peak in early July at about $256, $54 more than the low. The yearly average is $227.

JanFebMarAprMayJunJulAugSepOctNovDec$0$60$120$180$240$300
Show the data
When is the cheapest time to fly?
MonthAverage fareEarly monthLate month
January$214$221$208
February$207$202$212
March$239$235$242
April$228$236$219
May$230$224$237
June$244$238$251
July$252$256$248
August$217$222$212
September$211$210$212
October$218$221$215
November$222$215$229
December$239$227$250

How far in advance should I book?

Cheapest about 6 weeks out at $208

Book about 6 weeks before departure for the best fares from Houston to St. Louis, around $208. Booking in the final days before the flight costs about $338, $130 more. Booking six months ahead runs about $373.

1w2w1mo2mo3mo4mo5mo$0$50$100$150$200$250$300$350$400
Show the data
How far in advance should I book? (selected points, lowest and highest included)
Days before departureAverage fare
180 days$373
172 days$367
164 days$360
156 days$357
148 days$349
140 days$333
132 days$317
124 days$301
116 days$283
108 days$262
100 days$247
92 days$241
84 days$231
76 days$220
68 days$217
2mo$217
52 days$213
44 days$209
42 days$208
36 days$209
28 days$217
20 days$244
12 days$287
4 days$324
0 days$338

What's the cheapest day of the week to fly?

Thursday is the cheapest day of the week to fly from Houston to St. Louis. At $275 it is 7% cheaper than the average day. Sunday is the most expensive day, 12% above average.

$334Sun$323Mon$295Tue$278Wed$275Thu$282Fri$293Sat
Show the data
What's the cheapest day of the week to fly?
DayAverage fare
Sun$334
Mon$323
Tue$295
Wed$278
Thu$275
Fri$282
Sat$293

When is the best time of day to fly?

Afternoon (2pm - 5pm) is the cheapest time of day to fly from Houston to St. Louis. At $282 it is 7% cheaper than the average time. Midday (12pm - 2pm) is the most expensive time, 16% above average.

$284Morning$352Midday$282Afternoon$297Evening
Show the data
When is the best time of day to fly?
Time of dayAverage fare
Morning$284
Midday$352
Afternoon$282
Evening$297

What do round-trip flights from Houston to St. Louis cost?

Share of fares in each price range, adjusted to current prices.

6%$0to $15046%$150to $30030%$300to $45012%$450to $6004%$600to $7502%$750and up
Show the data
What do round-trip flights from Houston to St. Louis cost?
Price rangeShare of fares
$0 to $1506%
$150 to $30046%
$300 to $45030%
$450 to $60012%
$600 to $7504%
$750 and up2%
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 Houston 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 Houston to St. Louis.

What is the typical flight duration from Houston to St. Louis?

Houston (HOU) to St. Louis (STL) is about 690 miles. The typical nonstop flight takes 2 hours in the outbound direction, and the return leg takes 2 hours 5 minutes — a difference of only five minutes, so neither direction is meaningfully longer.
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 Houston to St. Louis?

Yes, Southwest Airlines flies non-stop from Houston Hobby to St. Louis, with 36 weekly flights operating daily. Departures are spread throughout the day from early morning until late evening, with roughly five to six non-stops each day. Southwest is the one airline currently scheduled non-stop on this route.
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?

Getting from St. Louis Lambert International Airport into the city center is straightforward, with the MetroLink light rail running directly from the airport terminals to downtown, typically every 7–10 minutes during the day. Taxis are available curbside at both terminals and cost roughly $30–45 to downtown, while rideshare services like Uber and Lyft have designated pickup zones at each terminal. Rental cars are offered by major agencies including Alamo, Avis, Budget, Dollar, Enterprise, Hertz, National, and Thrifty, with a free shuttle to the Rental Car Center. For most visitors, the MetroLink is the most-used and often fastest option, especially during rush hour, while taxis and rideshares provide door-to-door convenience for those with luggage or tight schedules.
References

When is the cheapest time to fly from Houston to St. Louis?

Fares from Houston to St. Louis are lowest in early February, around $202. February is the cheapest month overall, averaging $207, followed by September ($211) and January ($214). July is the most expensive month at about $252, and fares peak in early July at about $256. The yearly average is $227. 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 Houston to St. Louis?

Book about 6 weeks before departure for the best fares from Houston to St. Louis, around $208. Booking in the final days before the flight costs about $338, $130 more. Booking six months ahead runs about $373. 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 Houston to St. Louis?

Yes, red-eye flights are available from Houston (HOU) to St. Louis (STL) on Southwest Airlines. They operate three times a week — on Mondays, Thursdays, and Fridays — departing around 10:40 PM and landing at 12:45 AM, arriving in the early hours just after midnight rather than the next morning.
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 Houston to St. Louis?

Southwest Airlines operates nonstop between Houston Hobby and St. Louis, with 36 weekly flights running daily. Departures are spread from early morning through late evening, including a 22:40 overnight option arriving the next morning. Southwest is the airline currently scheduled nonstop on this route.
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 Houston to St. Louis?

Southwest Airlines flights from Houston HOU to St. Louis arrive on time—within 15 minutes of schedule—82.3% of the time, with a cancellation rate of just 0.4%. Southwest is the only carrier with published reliability figures on this route, and it ranks as the most reliable operator.
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 city's only commercial airport. It is about 14 miles northwest of downtown and serves major airlines with connections across the country.

How do I get to William P Hobby Airport from the city center?

Reaching William P. Hobby Airport from downtown Houston is easy with METRO Bus 500, a nonstop express that runs every 15–30 minutes for $4.50, making it the cheapest and most popular public option. Ride-share services like Uber and Lyft pick up at Curb Zone 5 and offer the fastest door-to-door trip, typically around 30 minutes, while licensed taxis depart from Curb Zone 2 with a flat fare of $29 to downtown plus a small departure surcharge. Driving yourself takes about 20–30 minutes via I-45, and two self-parking garages sit right next to the terminal with online reservation available. Hotel and off-airport parking shuttles also serve the airport from Curb Zones 3 and 4.
References

Are there hotels or sleeping facilities at St. Louis airport?

There are several hotels a short drive from St. Louis Lambert International Airport, including the Marriott St. Louis Airport, the Hilton St. Louis Airport, and the Renaissance St. Louis Airport Hotel. Many of these hotels offer complimentary airport shuttle service. The airport itself has no dedicated sleeping areas, quiet zones, or rest zones, and it does not provide cots to stranded travelers.
References

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 additional time available for $7.95 per day, and mobile charging points in gate areas. ATMs are located throughout the airport, including airside at Concourse A Gate A10 and Concourse C Gate C15, and a US Bank branch in Terminal 1 offers full-service banking and currency exchange. Travelers will find interfaith chapels in Terminal 1 near Exit Door 11 and Terminal 2 near Gate E40, plus Family Assist baby-care rooms near restrooms throughout the terminals and a transportation-themed children's play area called the St. Louis International Play Port near Gate C3. Permanent and rotating art exhibits are displayed throughout the terminals, and service animal relief areas are available near Gate A16 and at exterior locations near Terminal 1 Exit 6 and Terminal 2 Exit 10. No duty-free shops are available, though a small selection of shops includes multiple Hudson News locations, and baggage carts can be rented for $6 in Terminal 1 departures and baggage claim areas.
References

Are there accessible services or children's facilities at the Houston and St. Louis airports?

At William P. Hobby Airport, passengers with disabilities can use accessible shuttles, elevators, Skyway access, tactile signage, ADA-compliant restrooms, companion care restrooms, American Sign Language interpretation, Aira services for blind or low vision travelers, and the Sunflower Lanyard program for non-visible disabilities; wheelchair assistance is provided by airlines, so travelers should request it from their airline at booking. TSA Cares can be contacted at least 72 hours before travel for screening assistance. At Lambert–St. Louis International Airport, travelers with disabilities have access to wheelchair assistance, accessible restrooms, elevators, service animal relief areas, and specialized TSA security lanes, with an Information and Paging Booth staffed daily from 7am to 11pm and a Title VI Coordinator for accommodation requests.
References

What aircraft are typically used on flights from Houston to St. Louis?

Southwest Airlines is the only carrier currently scheduled nonstop on the Houston–St. Louis route, flying the Boeing 737-700. Boeing 737 family aircraft also appear in its schedule for this city pair.
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 Houston to St. Louis?

Southwest Airlines is the only carrier currently scheduled nonstop between Houston Hobby and St. Louis, with daily service. Southwest belongs to no alliance, so no airline alliance serves this route nonstop; other alliance carriers may still reach St. Louis from Houston 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 Houston?

Houston's William P. Hobby Airport offers three distinct lounge-style spaces when you're departing: The Gameway Lounge near Gate 1 for a gaming-focused experience, The Chiroport kiosk in the West Concourse offering a 20-minute hands-on stretch and massage session, and the USO Lounge in the Central Concourse for military members and their families. The Chiroport operates from 8:00 AM to 6:00 PM daily and accepts digital cards, with disabled access available. Gameway runs from 6:00 AM to 9:00 PM, and all three are accessible airside. These are the only lounge options at Hobby, as the airport has no traditional airline lounges.
References

Are same‑day changes or standby possible on this route?

Same-day changes and standby depend on the airline and fare class; flexible and premium tickets generally allow them, while Basic Economy does not.