Round-trip flight from St. Louis
STL to PHX
Crowne Plaza Phoenix Airport - PHX By IHG
Phoenix, 4300 East Washington
8.11,316 Reviews3.5-Star Hotel
9% Package Savings
$837/person
$1,842 $1,674 total
Incl. Flight + Hotel
Flight Deals from St. Louis to Phoenix from $170
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Good to Know
Essential information to help you plan your flight from St. Louis to Phoenix.
Cheapest Flight Round-trip
$202
Lowest round-trip price available on Priceline for this route right now.
This fare recently dropped from $353.
1 stop · economyCheapest Flight One-way
$170
Lowest one-way price found on Priceline for this route in the last 16 days. Found 18 days ago.
The typical one-way fare on this route is $186.
Outbound · Oct 22
9:50 pmSTLSt Louis Lambert International Airport
11:15 pmPHXPhoenix Sky Harbor International Airport
3h 25m · Nonstop
Cheapest Nonstop
$343
Cheapest nonstop found on Priceline for this route in the last 16 days. Found 9 days ago.
$141 more than the cheapest round-trip.
Outbound · Nov 2
7:20 pmSTLSt Louis Lambert International Airport
9:40 pmPHXPhoenix Sky Harbor International Airport
3h 20m · Nonstop
Return · Nov 9
5:45 amPHXPhoenix Sky Harbor International Airport
9:30 amSTLSt Louis Lambert International Airport
2h 45m · Nonstop
Good deal price
$318
A round-trip at or under $318 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
Wednesdays
Wednesday departures average $357 on this route, the lowest of any weekday.
$27 less than the average weekday, which is $384.
Best time to fly
Midday
Midday departures average $363 on this route, the lowest of any time of day.
$25 less than the average departure, which is $388.
Low season
August
Fares average $303 in August, the cheapest month to fly this route, bottoming out near $300 in late January.
$22 below the yearly average of $325.
When to book
6 weeks ahead
Fares on this route are lowest when booked about 6 weeks before departure.
Booking then averages $226, versus $269 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.
STLPHX
43% Price DropFrontier Airlines
Depart Nov 11 · Return Nov 14
3-night trip · economy
$353now only$202Round-trip
STLPHX
36% Price DropFrontier Airlines
Depart Nov 13 · Return Nov 16
3-night trip · economy
$353now only$225Round-trip
STLPHX
32% Price DropFrontier Airlines
Depart Nov 6 · Return Nov 9
3-night trip · economy
$353now only$242Round-trip
STLPHX
29% Price DropFrontier Airlines
Depart Dec 25 · Return Dec 30
5-night trip · economy
$353now only$252Round-trip
STLPHX
26% Price DropFrontier Airlines
Depart Dec 19 · Return Dec 22
3-night trip · economy
$353now only$260Round-trip
STLPHX
25% Price DropFrontier Airlines
Depart Dec 18 · Return Dec 22
4-night trip · economy
$353now only$266Round-trip
STLPHX
23% Price DropFrontier Airlines
Depart Jan 1 · Return Jan 4
3-night trip · economy
$354now only$273Round-trip
STLPHX
21% Price DropFrontier Airlines
Depart Dec 25 · Return Dec 28
3-night trip · economy
$353now only$278Round-trip
STLPHX
21% Price DropFrontier Airlines
Depart Dec 28 · Return Jan 1
4-night trip · economy
$353now only$278Round-trip
STLPHX
20% Price DropFrontier Airlines
Depart Nov 19 · Return Nov 22
3-night trip · economy
$353now only$282Round-trip
STLPHX
18% Price DropFrontier Airlines
Depart Nov 11 · Return Nov 15
4-night trip · economy
$353now only$289Round-trip
STLPHX
15% Price DropUnited Airlines
Depart Oct 22 · Return Oct 27
5-night trip · economy
$353now only$301Round-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.
STLPHX
BUDGET FRIENDLY
You’re guaranteed to get one of these airlines:
SouthwestAmericanFrontierUnitedDepart Nov 14 · Return Nov 16
2-night trip · economy
$345Round-trip
STLPHX
BUDGET FRIENDLY
You’re guaranteed to get one of these airlines:
SouthwestAmericanFrontierUnitedDepart Oct 24 · Return Oct 28
4-night trip · economy
$389Round-trip
STLPHX
BUDGET FRIENDLY
You’re guaranteed to get one of these airlines:
SouthwestAmericanFrontierUnitedDepart Oct 23 · Return Oct 26
3-night trip · economy
$421Round-trip
STLPHX
BUDGET FRIENDLY
You’re guaranteed to get one of these airlines:
SouthwestAmericanFrontierUnitedDepart Oct 23
economy
$251One-way
Frontier Airlinesfound Oct 1511/18/26
4:18 pm
STLSt Louis Lambert International Airport
11/19/26
12:42 am
PHXPhoenix Sky Harbor International Airport
11/25/26
7:34 pm
PHXPhoenix Sky Harbor International Airport
11/26/26
7:54 am
STLSt Louis Lambert International Airport
$226
Frontier Airlinesfound Oct 1111/02/26
7:59 pm
STLSt Louis Lambert International Airport
11/03/26
12:42 am
PHXPhoenix Sky Harbor International Airport
11/09/26
5:01 am
PHXPhoenix Sky Harbor International Airport
11/09/26
11:19 am
STLSt Louis Lambert International Airport
$238
Frontier Airlinesfound Oct 1111/02/26
7:59 pm
STLSt Louis Lambert International Airport
11/03/26
9:04 am
PHXPhoenix Sky Harbor International Airport
11/09/26
5:01 am
PHXPhoenix Sky Harbor International Airport
11/09/26
11:19 am
STLSt Louis Lambert International Airport
$244
Frontier Airlinesfound Oct 1111/02/26
7:59 pm
STLSt Louis Lambert International Airport
11/03/26
4:17 pm
PHXPhoenix Sky Harbor International Airport
11/09/26
5:01 am
PHXPhoenix Sky Harbor International Airport
11/09/26
11:19 am
STLSt Louis Lambert International Airport
$244
BUNDLE + SAVE
Book a flight & hotel together for extra savings.
On average save $240 per traveler
Frontier Airlinesfound Oct 1111/02/26
7:59 pm
STLSt Louis Lambert International Airport
11/03/26
8:54 pm
PHXPhoenix Sky Harbor International Airport
11/09/26
5:01 am
PHXPhoenix Sky Harbor International Airport
11/09/26
11:19 am
STLSt Louis Lambert International Airport
$244
Frontier Airlinesfound Oct 1111/02/26
7:59 pm
STLSt Louis Lambert International Airport
11/03/26
12:42 am
PHXPhoenix Sky Harbor International Airport
11/09/26
10:09 am
PHXPhoenix Sky Harbor International Airport
11/09/26
7:14 pm
STLSt Louis Lambert International Airport
$246
Frontier Airlinesfound Oct 1111/02/26
7:59 pm
STLSt Louis Lambert International Airport
11/03/26
9:04 am
PHXPhoenix Sky Harbor International Airport
11/09/26
10:09 am
PHXPhoenix Sky Harbor International Airport
11/09/26
7:14 pm
STLSt Louis Lambert International Airport
$252
Southwest Airlinesfound Oct 1111/02/26
7:20 pm
STLSt Louis Lambert International Airport
11/02/26
9:40 pm
PHXPhoenix Sky Harbor International Airport
11/09/26
5:45 am
PHXPhoenix Sky Harbor International Airport
11/09/26
9:30 am
STLSt Louis Lambert International Airport
$343
American Airlinesfound Oct 1111/02/26
2:28 pm
STLSt Louis Lambert International Airport
11/02/26
4:55 pm
PHXPhoenix Sky Harbor International Airport
11/09/26
7:56 pm
PHXPhoenix Sky Harbor International Airport
11/09/26
11:56 pm
STLSt Louis Lambert International Airport
$351
Frontier Airlinesfound Oct 1111/02/26
7:59 pm
STLSt Louis Lambert International Airport
11/03/26
8:54 pm
PHXPhoenix Sky Harbor International Airport
11/09/26
10:09 am
PHXPhoenix Sky Harbor International Airport
11/09/26
7:14 pm
STLSt Louis Lambert International Airport
$252
No flights match these filters.
Top Deals on flights from St. Louis to Phoenix
St. Louis, US (STL) - Phoenix, US (PHX)
Southwest AirlinesOct 22
9:50 pm
STLSt Louis Lambert International Airport
Oct 22
11:15 pm
PHXPhoenix Sky Harbor International Airport
Search More
as low as
$170St. Louis, US (STL) - Phoenix, US (PHX)
American AirlinesOct 22
2:27 pm
STLSt Louis Lambert International Airport
Oct 22
3:54 pm
PHXPhoenix Sky Harbor International Airport
Search More
as low as
$173St. Louis, US (STL) - Phoenix, US (PHX)
Southwest AirlinesOct 22
5:05 am
STLSt Louis Lambert International Airport
Oct 22
8:50 am
PHXPhoenix Sky Harbor International Airport
Search More
as low as
$180St. Louis, US (STL) - Phoenix, US (PHX)
Southwest AirlinesOct 22
5:10 am
STLSt Louis Lambert International Airport
Oct 22
9:10 am
PHXPhoenix Sky Harbor International Airport
Search More
as low as
$180St. Louis, US (STL) - Phoenix, US (PHX)
Southwest AirlinesOct 22
6:20 pm
STLSt Louis Lambert International Airport
Oct 22
10:30 pm
PHXPhoenix Sky Harbor International Airport
Search More
as low as
$180St. Louis, US (STL) - Phoenix, US (PHX)
Southwest AirlinesOct 22
8:30 am
STLSt Louis Lambert International Airport
Oct 22
1:00 pm
PHXPhoenix Sky Harbor International Airport
Search More
as low as
$180St. Louis, US (STL) - Phoenix, US (PHX)
Southwest AirlinesOct 22
6:05 am
STLSt Louis Lambert International Airport
Oct 22
10:45 am
PHXPhoenix Sky Harbor International Airport
Search More
as low as
$180St. Louis, US (STL) - Phoenix, US (PHX)
Southwest AirlinesOct 22
6:25 pm
STLSt Louis Lambert International Airport
Oct 22
11:20 pm
PHXPhoenix Sky Harbor International Airport
Search More
as low as
$180St. Louis, US (STL) - Phoenix, US (PHX)
Southwest AirlinesOct 22
2:25 pm
STLSt Louis Lambert International Airport
Oct 22
7:30 pm
PHXPhoenix Sky Harbor International Airport
Search More
as low as
$180St. Louis, US (STL) - Phoenix, US (PHX)
Southwest AirlinesOct 22
6:20 pm
STLSt Louis Lambert International Airport
Oct 22
11:30 pm
PHXPhoenix Sky Harbor International Airport
Search More
as low as
$180St. Louis, US (STL) - Phoenix, US (PHX)
Southwest AirlinesOct 22
1:05 pm
STLSt Louis Lambert International Airport
Oct 22
6:25 pm
PHXPhoenix Sky Harbor International Airport
Search More
as low as
$180St. Louis, US (STL) - Phoenix, US (PHX)
Southwest AirlinesOct 22
4:20 pm
STLSt Louis Lambert International Airport
Oct 22
9:45 pm
PHXPhoenix Sky Harbor International Airport
Search More
as low as
$180Best Phoenix Hotel + Flight Packages
St. Louis - Phoenix packages
Round-trip flight from St. Louis
STL to PHX
EZ8 Motel Airporter
Phoenix, 1820 S 7th St
6.13,275 Reviews2.5-Star Hotel
8% Package Savings
$695/person
$1,514 $1,390 total
Incl. Flight + Hotel
Round-trip flight from St. Louis
STL to PHX
Holiday Inn Phoenix Airport By IHG
Phoenix, 3220 S. 48th Street
8.4885 Reviews3-Star Hotel
6% Package Savings
$1,030/person
$2,196 $2,060 total
Incl. Flight + Hotel
Round-trip flight from St. Louis
STL to PHX
Country Inn & Suites by Radisson, Phoenix Airport, AZ
Phoenix, 4702 E. University Drive
7.71,382 Reviews3-Star Hotel
21% Package Savings
$898/person
$2,259 $1,795 total
Incl. Flight + Hotel
Round-trip flight from St. Louis
STL to PHX
Drury Inn & Suites Phoenix Happy Valley
Phoenix, 2335 W Pinnacle Peak Rd
9.31,144 Reviews4-Star Hotel
11% Package Savings
$1,153/person
$2,593 $2,305 total
Incl. Flight + Hotel
Round-trip flight from St. Louis
STL to PHX
GreenTree Inn Phoenix Sky Harbor
Phoenix, 4234 South 48th Street
7.12,292 Reviews3-Star Hotel
8% Package Savings
$815/person
$1,770 $1,630 total
Incl. Flight + Hotel
Round-trip flight from St. Louis
STL to PHX
Holiday Inn and Suites Phoenix Airport North By IHG
Phoenix, 1515 North 44th Street
8.1660 Reviews3-Star Hotel
9% Package Savings
$852/person
$1,877 $1,703 total
Incl. Flight + Hotel
Round-trip flight from St. Louis
STL to PHX
La Quinta Inn & Suites by Wyndham Phoenix West Glendale
Phoenix (Az), 9050 W Mcdowell Rd
8.5520 Reviews2.5-Star Hotel
11% Package Savings
$901/person
$2,019 $1,801 total
Incl. Flight + Hotel
Best Phoenix Hotel + Flight + Car Packages
St. Louis - Phoenix packages
Round-trip flight from St. Louis
STL to PHX
Country Inn & Suites by Radisson, Phoenix Airport, AZ
Phoenix, 4702 E. University Drive
7.71,382 Reviews3-Star Hotel
Rental car included
Pick-up in PHX
19% Package Savings
$1,017/person
$2,510 $2,034 total
Incl. Flight + Hotel + Car
Round-trip flight from St. Louis
STL to PHX
Drury Inn & Suites Phoenix Happy Valley
Phoenix, 2335 W Pinnacle Peak Rd
9.31,144 Reviews4-Star Hotel
Rental car included
Pick-up in PHX
10% Package Savings
$1,276/person
$2,844 $2,552 total
Incl. Flight + Hotel + Car
Round-trip flight from St. Louis
STL to PHX
GreenTree Inn Phoenix Sky Harbor
Phoenix, 4234 South 48th Street
7.12,292 Reviews3-Star Hotel
Rental car included
Pick-up in PHX
7% Package Savings
$936/person
$2,022 $1,872 total
Incl. Flight + Hotel + Car
Round-trip flight from St. Louis
STL to PHX
Holiday Inn and Suites Phoenix Airport North By IHG
Phoenix, 1515 North 44th Street
8.1660 Reviews3-Star Hotel
Rental car included
Pick-up in PHX
9% Package Savings
$972/person
$2,130 $1,944 total
Incl. Flight + Hotel + Car
Round-trip flight from St. Louis
STL to PHX
La Quinta Inn & Suites by Wyndham Phoenix West Glendale
Phoenix (Az), 9050 W Mcdowell Rd
8.5520 Reviews2.5-Star Hotel
Rental car included
Pick-up in PHX
10% Package Savings
$1,021/person
$2,269 $2,041 total
Incl. Flight + Hotel + Car
Round-trip flight from St. Louis
STL to PHX
Crowne Plaza Phoenix Airport - PHX By IHG
Phoenix, 4300 East Washington
8.11,316 Reviews3.5-Star Hotel
Rental car included
Pick-up in PHX
9% Package Savings
$958/person
$2,093 $1,915 total
Incl. Flight + Hotel + Car
Round-trip flight from St. Louis
STL to PHX
EZ8 Motel Airporter
Phoenix, 1820 S 7th St
6.13,275 Reviews2.5-Star Hotel
Rental car included
Pick-up in PHX
7% Package Savings
$817/person
$1,764 $1,634 total
Incl. Flight + Hotel + Car
Round-trip flight from St. Louis
STL to PHX
Holiday Inn Phoenix Airport By IHG
Phoenix, 3220 S. 48th Street
8.4885 Reviews3-Star Hotel
Rental car included
Pick-up in PHX
6% Package Savings
$1,148/person
$2,445 $2,295 total
Incl. Flight + Hotel + Car
When is the cheapest time to fly?
Cheapest in late January at about $300
Fares from St. Louis to Phoenix are lowest in late January, around $300, and August is the cheapest month overall, averaging $303. They peak in late December at about $368, $68 more than the low. The yearly average is $325.
Show the data
| Month | Average fare | Early month | Late month |
|---|---|---|---|
| January | $307 | $315 | $300 |
| February | $314 | $313 | $316 |
| March | $357 | $346 | $368 |
| April | $345 | $352 | $337 |
| May | $331 | $333 | $330 |
| June | $335 | $337 | $334 |
| July | $322 | $326 | $319 |
| August | $303 | $306 | $300 |
| September | $309 | $302 | $317 |
| October | $318 | $325 | $311 |
| November | $311 | $308 | $314 |
| December | $342 | $315 | $368 |
How far in advance should I book?
Cheapest about 6 weeks out at $226
Book about 6 weeks before departure for the best fares from St. Louis to Phoenix, around $226. Booking in the final days before the flight costs about $269, $43 more. Booking six months ahead runs about $365.
Show the data
| Days before departure | Average fare |
|---|---|
| 180 days | $365 |
| 172 days | $360 |
| 164 days | $356 |
| 156 days | $355 |
| 148 days | $351 |
| 140 days | $338 |
| 132 days | $320 |
| 124 days | $300 |
| 116 days | $281 |
| 108 days | $275 |
| 100 days | $272 |
| 92 days | $268 |
| 84 days | $256 |
| 76 days | $245 |
| 68 days | $244 |
| 2mo | $240 |
| 52 days | $234 |
| 44 days | $228 |
| 41 days | $226 |
| 36 days | $227 |
| 28 days | $231 |
| 20 days | $239 |
| 12 days | $250 |
| 4 days | $263 |
| 0 days | $269 |
What's the cheapest day of the week to fly?
Wednesday is the cheapest day of the week to fly from St. Louis to Phoenix. At $357 it is 7% cheaper than the average day. Sunday is the most expensive day, 10% above average.
Show the data
| Day | Average fare |
|---|---|
| Sun | $423 |
| Mon | $376 |
| Tue | $379 |
| Wed | $357 |
| Thu | $399 |
| Fri | $368 |
| Sat | $386 |
When is the best time of day to fly?
Midday (12pm - 2pm) is the cheapest time of day to fly from St. Louis to Phoenix. At $363 it is 6% cheaper than the average time. Morning (5am - 12pm) is the most expensive time, 12% above average.
Show the data
| Time of day | Average fare |
|---|---|
| Morning | $435 |
| Midday | $363 |
| Afternoon | $366 |
| Evening | $386 |
| Late Night | $392 |
What do round-trip flights from St. Louis to Phoenix cost?
Share of fares in each price range, adjusted to current prices.
Show the data
| Price range | Share of fares |
|---|---|
| $0 to $150 | 3% |
| $150 to $300 | 14% |
| $300 to $450 | 48% |
| $450 to $600 | 18% |
| $600 to $750 | 10% |
| $750 to $900 | 4% |
| $900 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 St. Louis to Phoenix 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 St. Louis to Phoenix.
What is the typical flight duration from St. Louis to Phoenix?
Flights from St. Louis to Phoenix are about 1,260 miles. The typical nonstop flight takes 3 hours and 20 minutes, while the return leg from Phoenix to St. Louis is slightly shorter at 2 hours and 55 minutes, making the westbound trip the longer direction.
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 St. Louis to Phoenix?
Yes, Southwest and American Airlines both fly St. Louis to Phoenix non-stop, each daily. Southwest runs 32 weekly departures spread across morning, afternoon, and evening, while American operates 14 weekly flights with two daily departures. Combined, that's 46 non-stop flights a week between the two cities.
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 Phoenix?
Phoenix Sky Harbor offers taxis at a $20 flat rate to downtown Phoenix, rideshares like Uber and Lyft available 24/7 with a 10–15 minute trip, the free PHX Sky Train that connects to Valley Metro Rail for light rail access to Phoenix, Tempe, and Mesa, and rental cars from the on-site Rental Car Center. Valley Metro Rail is the most cost-effective option for reaching the city center, while taxis and rideshares are the fastest for door-to-door service. Rideshare is the most commonly used option, given its convenience and predictable pricing.
References
- Taxis & Shuttles | Phoenix Sky Harbor International Airport
- The PHX Sky Train® | Phoenix Sky Harbor International Airport
- A Guide to Phoenix Airport (PHX) | Chase
- 44th Street/Washington station
- Find cheap flights to Phoenix (PHX) | American Airlines
- How to get from Phoenix Airport (PHX) to Sky Harbor Rental Car Center | Uber
- How to get from Phoenix Airport (PHX) to Tempe, AZ | Uber
When is the cheapest time to fly from St. Louis to Phoenix?
Fares from St. Louis to Phoenix are lowest in late January, around $300. August is the cheapest month overall, averaging $303, followed by January ($307) and September ($309). March is the most expensive month at about $357, and fares peak in late December at about $368. The yearly average is $325. 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 St. Louis to Phoenix?
Book about 6 weeks before departure for the best fares from St. Louis to Phoenix, around $226. Booking in the final days before the flight costs about $269, $43 more. Booking six months ahead runs about $365. 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 St. Louis to Phoenix?
No nonstop red-eye flights operate from St. Louis to Phoenix, but connecting overnight itineraries do exist on Southwest via Nashville, Baltimore, and Chicago Midway. The overnight legs depart between 22:10 and 22:55 and land in the early hours, arriving at 00:15, 00:10, and 00:45 respectively.
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 St. Louis to Phoenix?
Southwest Airlines and American Airlines operate nonstop flights from St. Louis to Phoenix, with Southwest running 32 weekly flights and American 14. Southwest flights depart throughout the day from early morning to late evening, while American's departures are in the morning and early afternoon. Both airlines fly this route daily.
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 St. Louis to Phoenix?
Arrival reliability on the St. Louis to Phoenix route is strongest on American Eagle flights operated by SkyWest, which arrive within 15 minutes of schedule 82.6% of the time with no cancellations. Southwest follows at 77.4% on-time arrivals and a 0.3% cancellation rate, and American mainline at 77.3% with the same cancellation rate.
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 Phoenix?
Phoenix Sky Harbor International Airport is the only commercial airport serving Phoenix. It is about 3 miles east of downtown and is a hub for American Airlines and a focus city for Southwest.
How do I get to Lambert Intl Airport from the city center?
From downtown St. Louis, the fastest and most popular way to reach Lambert International Airport is by ride-share or taxi, which take roughly 15–20 minutes depending on traffic. MetroLink light rail is the most affordable option, with trains running frequently from downtown directly to the airport terminals. Airport shuttles from downtown hotels offer a middle-ground choice, while driving yourself is straightforward via I-70 West, with on-site parking garages and surface lots available at both terminals.
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
Are there hotels or sleeping facilities at Phoenix airport?
Phoenix Sky Harbor International Airport has no hotel directly inside the terminals, so travelers arriving from St. Louis who want a proper bed will need to stay at a nearby property. Several hotels near the airport offer free shuttle service, including the SureStay by Best Western about 1.2 miles away, the Holiday Inn Express about 1.3 miles away, the Hilton Garden Inn Phoenix Airport North about 1.4 miles away, and the Crowne Plaza Phoenix Airport about 1.6 miles away. The airport itself remains open 24 hours, and passengers may sleep on benches or in armrest-free seating areas, though there are no dedicated sleeping rooms or rest zones.
What facilities and services are available to travelers at Phoenix Sky Harbor International Airport?
Phoenix Sky Harbor International Airport offers free Wi-Fi in all terminals, along with charging stations providing outlets and USB ports throughout the airport. Travelers can find ATMs, information counters in Terminals 3 and 4 and the Rental Car Center, nursing stations pre- and post-security in all terminals, and mailboxes outside each terminal. The airport features one of the largest airport museum programs in the country, with art installations such as Fluoresce in Terminal 4, Fly Over the West in Terminal 3, and The Phoenix at the Rental Car Center. An animal relief area is located on the west side of Terminal 4, level 1, outside the baggage claim area. Early Bag Check is available at the Rental Car Center or East Economy Parking for domestic travel on select airlines. Smoking is strictly prohibited in any terminal.
References
- Food & Drinks | Phoenix Sky Harbor International Airport
- Services | Phoenix Sky Harbor International Airport
- Phoenix, AZ (PHX)
- Phoenix Sky Harbor International Airport (PHX) +1-855-470-2464
- Phoenix Sky Harbor International (PHX) (KPHX) passenger reviews | Flightradar24
- Phoenix Sky Harbor International Airport
- List of Lounges at Phoenix Sky Harbor International Airport [PHX]
- Phoenix / Scottsdale, AZ (PHX)
Are there accessible services or children's facilities at the St. Louis and Phoenix airports?
St. Louis Lambert International Airport provides wheelchair assistance, accessible restrooms, elevators, service animal relief areas, and TSA lanes for persons with disabilities, with an Information and Paging Booth staffed daily from 7am to 11pm that can answer accessibility questions at 314-890-1333. Phoenix Sky Harbor International Airport offers wheelchair assistance coordinated through airline-contracted companies, accessible restrooms in all terminals, eight animal relief areas, free Aira visual interpreting, a Sensory Room, and a Compassion Cacti lanyard so staff can offer extra time or help during screening. Wheelchair service at Phoenix can be requested via blue phones on the PHX Sky Train platforms or through your airline, and passengers needing extra screening support can contact TSA Cares.
References
- STL’s T2 Metrolink Station Elevator Out Of Service - St. Louis Lambert International Airport
- St. Louis Lambert International Airport
- Civil Rights - St. Louis Lambert International Airport
- Saint Louis Lambert | Fastrack
- FAQs | Phoenix Sky Harbor International Airport
- Accessibility and Assistance | Phoenix Sky Harbor International Airport
- Phoenix Sky Harbor amenities to help flyers of all abilities
- Phoenix Sky Harbor International Airport
What aircraft are typically used on flights from St. Louis to Phoenix?
Southwest Airlines operates the most flights from St. Louis to Phoenix, using Boeing 737 family aircraft including the Boeing 737-700. American Airlines also flies this route nonstop, using Airbus A320 aircraft.
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 St. Louis to Phoenix?
On the St. Louis to Phoenix route, the two airlines currently scheduled non-stop are Southwest Airlines and American Airlines. American Airlines belongs to the oneworld alliance, while Southwest is an independent carrier that belongs to no alliance; other alliances may still serve the route 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 St. Louis?
St. Louis Lambert International Airport offers three lounge options for departing passengers: the American Airlines Admirals Club in Terminal 1 (airside, between Concourses B and C), the James S. McDonnell USO Lounge in Terminal 1 (landside, lower level, across from baggage carousel M6, for active US military and their families), and the Wingtips Lounge in Terminal 2 (airside, near Gate E31). The Admirals Club provides complimentary food and drinks, a full-service bar, and Wi-Fi, with access via Admirals Club membership, eligible premium cards, or a day pass for $59 or 5,900 AAdvantage miles. The Wingtips Lounge is a common-use lounge accessible via Priority Pass, LoungeKey, LoungeBuddy, Diner's Club, or a paid day pass, and it offers complimentary food, beverages, and high-speed Wi-Fi.
References
- St. Louis Lambert Airport Lounges Guide
- Wingtips Lounge St. Louis STL AIRPORT Terminal 2 St Louis MO Lambert-St Louis Intl | Priority Pass
- St. Louis Lambert Airport Guide (STL) - Sleeping in Airports
- Southwest Airlines Terminal at St. Louis Lambert International Airport (STL)
- St. Louis, MO (STL)
- Lounges Archives - St. Louis Lambert International Airport
- St. Louis Airport Lounges (STL) – Sleeping in Airports
- St. Louis Lambert International Airport STL Lounges - STL Airport Guide and lounges. | Priority Pass
Are same‑day changes or standby possible on this route?
Same‑day changes and standby depend on the airline and fare class; flexible tickets and premium cabins generally permit them, while Basic Economy does not.