$73+ Cheap flights from Phoenix to St. Louis (STL)
This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 9/30. Fares are subject to change and may not be available on all flights or dates of travel.
PHX — STL
Sep 4 — Sep 111
Round-trip
1 adult, Economy
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Find cheap flights from Phoenix to St. Louis with Cheapflights
1. Tell us where you want to go
Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”2. Select your favorite providers
We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.3. Compare prices and book
Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.Cheapflights Tip: The best prices from Phoenix to Lambert-St Louis are usually found in October or January, booked 10 days in advance, depart on a Friday or Saturday and return on a Wednesday
Cheap flight deals from Phoenix to St. Louis
Cheapest
Best
Last-minute
One-way
Cheapest flights from Phoenix to St. LouisExplore the most affordable flight options available from Phoenix to St. Louis. Find the lowest fares from popular airlines and budget airlines, with prices last updated on August 5, 2026.
Explore the most affordable flight options available from Phoenix to St. Louis. Find the lowest fares from popular airlines and budget airlines, with prices last updated on August 5, 2026.
This Kiwi.com deal was found by Cheapflights users on 7/31. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/169:15 am -
1 stop8h 02m
Wed 9/238:10 pm -
1 stop13h 50m
Deal found 7/31![Frontier logo]()
$153
This Kiwi.com deal was found by Cheapflights users on 7/31. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/96:36 pm -
1 stop22h 39m
Tue 10/138:10 pm -
1 stop22h 52m
Deal found 7/31![Frontier logo]()
$173
This Kiwi.com deal was found by Cheapflights users on 8/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/1111:29 am -
1 stop5h 48m
Sun 9/131:02 pm -
1 stop12h 41m
Deal found 8/3![Frontier logo]()
$189
This Kiwi.com deal was found by Cheapflights users on 7/31. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/118:56 pm -
1 stop20h 21m
Mon 9/148:10 pm -
1 stop13h 50m
Deal found 7/31![Frontier logo]()
$190
This Kiwi.com deal was found by Cheapflights users on 8/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/298:56 pm -
1 stop20h 21m
Tue 10/138:10 pm -
1 stop22h 52m
Deal found 8/2![Frontier logo]()
$201
This Kiwi.com deal was found by Cheapflights users on 8/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/256:25 am -
1 stop10h 52m
Mon 9/288:10 pm -
1 stop13h 50m
Deal found 8/1![Frontier logo]()
$202
This Kiwi.com deal was found by Cheapflights users on 7/31. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/228:56 pm -
1 stop20h 21m
Tue 10/612:17 pm -
2 stops13h 26m
Deal found 7/31![Frontier logo]()
$204
This Kiwi.com deal was found by Cheapflights users on 8/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/138:16 am -
1 stop8h 59m
Mon 10/198:10 pm -
1 stop13h 01m
Deal found 8/2![Frontier logo]()
$206
Best flights from Phoenix to St. LouisDiscover carefully curated flight deals from Phoenix to St. Louis that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated August 5, 2026.
Discover carefully curated flight deals from Phoenix to St. Louis that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated August 5, 2026.
This Southwest deal was found by Cheapflights users on 7/31. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/226:00 am -
Nonstop2h 55m
Tue 10/68:50 pm -
Nonstop3h 15m
Deal found 7/31![Southwest logo]()
$277
This Southwest deal was found by Cheapflights users on 7/31. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/163:25 pm -
Nonstop3h 00m
Wed 9/234:45 pm -
1 stop5h 50m
Deal found 7/31![Southwest logo]()
$287
This Southwest deal was found by Cheapflights users on 8/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/146:55 pm -
Nonstop3h 00m
Mon 9/218:45 pm -
Nonstop3h 15m
Deal found 8/1![Southwest logo]()
$297
This Southwest deal was found by Cheapflights users on 7/31. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/18:20 am -
Nonstop2h 55m
Thu 9/35:55 am -
1 stop6h 35m
Deal found 7/31![Southwest logo]()
$342
This Southwest deal was found by Cheapflights users on 8/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/74:25 pm -
1 stop4h 50m
Mon 9/148:45 pm -
Nonstop3h 15m
Deal found 8/2![Southwest logo]()
$352
This Southwest deal was found by Cheapflights users on 7/31. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/58:50 am -
Nonstop2h 50m
Sun 11/88:30 am -
1 stop6h 05m
Deal found 7/31![Southwest logo]()
$353
This Southwest deal was found by Cheapflights users on 8/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/49:40 am -
1 stop5h 40m
Mon 9/76:00 am -
Nonstop3h 15m
Deal found 8/1![Southwest logo]()
$357
This Southwest deal was found by Cheapflights users on 7/31. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/106:55 pm -
Nonstop3h 00m
Sun 9/136:40 pm -
1 stop6h 15m
Deal found 7/31![Southwest logo]()
$357
This Southwest deal was found by Cheapflights users on 8/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/98:25 pm -
Nonstop2h 50m
Sun 10/259:45 pm -
Nonstop3h 20m
Deal found 8/2![Southwest logo]()
$397
This Southwest deal was found by Cheapflights users on 8/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/245:00 am -
Nonstop2h 50m
Mon 9/282:20 pm -
1 stop4h 30m
Deal found 8/4![Southwest logo]()
$409
Last-minute flights from Phoenix to St. LouisDiscover last-minute flight deals from Phoenix to St. Louis. Data last updated August 5, 2026 and is based on user searches.
Discover last-minute flight deals from Phoenix to St. Louis. Data last updated August 5, 2026 and is based on user searches.
This Kiwi.com deal was found by Cheapflights users on 8/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/1111:29 am -
1 stop5h 48m
Sun 9/131:02 pm -
1 stop12h 41m
Deal found 8/3![Frontier logo]()
$189
This Kiwi.com deal was found by Cheapflights users on 7/31. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/118:56 pm -
1 stop20h 21m
Mon 9/148:10 pm -
1 stop13h 50m
Deal found 7/31![Frontier logo]()
$190
This Kiwi.com deal was found by Cheapflights users on 8/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/1411:29 am -
1 stop5h 48m
Mon 9/218:10 pm -
1 stop13h 50m
Deal found 8/1![Frontier logo]()
$211
This Kiwi.com deal was found by Cheapflights users on 7/31. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/169:15 am -
1 stop8h 02m
Wed 9/238:10 pm -
1 stop13h 50m
Deal found 7/31![Frontier logo]()
$153
This Kiwi.com deal was found by Cheapflights users on 7/31. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/228:56 pm -
1 stop20h 21m
Tue 10/612:17 pm -
2 stops13h 26m
Deal found 7/31![Frontier logo]()
$204
This Kiwi.com deal was found by Cheapflights users on 8/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/256:25 am -
1 stop10h 52m
Mon 9/288:10 pm -
1 stop13h 50m
Deal found 8/1![Frontier logo]()
$202
This Kiwi.com deal was found by Cheapflights users on 8/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/298:56 pm -
1 stop20h 21m
Tue 10/138:10 pm -
1 stop22h 52m
Deal found 8/2![Frontier logo]()
$201
One-way flights from Phoenix to St. LouisSearch for one-way flight options from Phoenix to St. Louis. Find affordable one-way fares based on user searches. Data last updated August 5, 2026.
Search for one-way flight options from Phoenix to St. Louis. Find affordable one-way fares based on user searches. Data last updated August 5, 2026.
This Kiwi.com deal was found by Cheapflights users on 7/31. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/309:15 am -
1 stop8h 02m
Deal found 7/31![Frontier logo]()
$73
This Kiwi.com deal was found by Cheapflights users on 7/31. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/298:56 pm -
1 stop20h 21m
Deal found 7/31![Frontier logo]()
$76
This Kiwi.com deal was found by Cheapflights users on 8/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/26:25 am -
1 stop10h 52m
Deal found 8/2![Frontier logo]()
$94
This Kiwi.com deal was found by Cheapflights users on 8/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/238:16 am -
1 stop8h 59m
Deal found 8/3![Frontier logo]()
$95
This Kiwi.com deal was found by Cheapflights users on 8/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/110:06 am -
1 stop8h 09m
Deal found 8/2![Frontier logo]()
$97
This Kiwi.com deal was found by Cheapflights users on 8/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/314:40 pm -
1 stop21h 51m
Deal found 8/1![Frontier logo]()
$99
This Kiwi.com deal was found by Cheapflights users on 7/31. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/18:56 pm -
1 stop20h 21m
Deal found 7/31![Frontier logo]()
$100
This Kiwi.com deal was found by Cheapflights users on 7/31. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/166:36 pm -
1 stop22h 39m
Deal found 7/31![Frontier logo]()
$102
This Kiwi.com deal was found by Cheapflights users on 8/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/57:55 pm -
1 stop22h 20m
Deal found 8/4![Frontier logo]()
$103
Find flight deals from Phoenix to St. Louis
Discover tips and strategies to find the most affordable flight options for your journey from Phoenix (PH1) to St. Louis (STL). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated August 5, 2026.
Round-trip from | $189 (Kiwi.com) |
|---|---|
One-way from | $73 (Kiwi.com) |
Popular in | June |
Cheapest in | October |
Average price | $367 |
Cheapflights Fare Finder
Customize your flight search to find flights from Phoenix to St. Louis that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated August 5, 2026.
Use the filters below to find and compare flights from Phoenix to St. Louis that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
Quickest round-trip
PhoenixSt. Louis
PHX Phoenix Sky Harbor Intl - STL Lambert-St Louis
PHXSTL
Phoenix Sky Harbor Intl
Tue 9/22
6:00 am-10:55 am
Nonstop2h 55m
Lambert-St Louis
Tue 10/6
8:50 pm-10:05 pm
Nonstop3h 15m
$277
PhoenixSt. Louis
PHX Phoenix Sky Harbor Intl - STL Lambert-St Louis
PHXSTL
Phoenix Sky Harbor Intl
Wed 9/16
3:25 pm-8:25 pm
Nonstop3h 00m
Lambert-St Louis
Wed 9/23
4:45 pm-8:35 pm
1 stop5h 50m
$287
PhoenixSt. Louis
PHX Phoenix Sky Harbor Intl - STL Lambert-St Louis
PHXSTL
Phoenix Sky Harbor Intl
Mon 9/14
6:55 pm-11:55 pm
Nonstop3h 00m
Lambert-St Louis
Mon 9/21
8:45 pm-10:00 pm
Nonstop3h 15m
$297
PhoenixSt. Louis
PHX Phoenix Sky Harbor Intl - STL Lambert-St Louis
PHXSTL
Phoenix Sky Harbor Intl
Tue 9/1
8:20 am-1:15 pm
Nonstop2h 55m
Lambert-St Louis
Thu 9/3
5:55 am-10:30 am
1 stop6h 35m
$342
PhoenixSt. Louis
PHX Phoenix Sky Harbor Intl - STL Lambert-St Louis
PHXSTL
Phoenix Sky Harbor Intl
Mon 9/7
4:25 pm-11:15 pm
1 stop4h 50m
Lambert-St Louis
Mon 9/14
8:45 pm-10:00 pm
Nonstop3h 15m
$352
PhoenixSt. Louis
PHX Phoenix Sky Harbor Intl - STL Lambert-St Louis
PHXSTL
Phoenix Sky Harbor Intl
Thu 11/5
8:50 am-12:40 pm
Nonstop2h 50m
Lambert-St Louis
Sun 11/8
8:30 am-1:35 pm
1 stop6h 05m
$353
PhoenixSt. Louis
PHX Phoenix Sky Harbor Intl - STL Lambert-St Louis
PHXSTL
Phoenix Sky Harbor Intl
Fri 9/4
9:40 am-5:20 pm
1 stop5h 40m
Lambert-St Louis
Mon 9/7
6:00 am-7:15 am
Nonstop3h 15m
$357
PhoenixSt. Louis
PHX Phoenix Sky Harbor Intl - STL Lambert-St Louis
PHXSTL
Phoenix Sky Harbor Intl
Thu 9/10
6:55 pm-11:55 pm
Nonstop3h 00m
Lambert-St Louis
Sun 9/13
6:40 pm-10:55 pm
1 stop6h 15m
$357
PhoenixSt. Louis
PHX Phoenix Sky Harbor Intl - STL Lambert-St Louis
PHXSTL
Phoenix Sky Harbor Intl
Fri 10/9
8:25 pm-1:15 am
Nonstop2h 50m
Lambert-St Louis
Sun 10/25
9:45 pm-11:05 pm
Nonstop3h 20m
$397
PhoenixSt. Louis
PHX Phoenix Sky Harbor Intl - STL Lambert-St Louis
PHXSTL
Phoenix Sky Harbor Intl
Thu 9/24
5:00 am-9:50 am
Nonstop2h 50m
Lambert-St Louis
Mon 9/28
2:20 pm-4:50 pm
1 stop4h 30m
$409
Showing 1-10 of 19 resultsSorted by cheapest first
Best time to book a flight from Phoenix to St. Louis
Have a flexible travel schedule? Discover the best time to fly to St. Louis from Phoenix with our price prediction graph.
PH1-STL
PHX-STL
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.
Cheapflights Insights
Everything you need to know about your flight from Phoenix to St. Louis
PH1-STL
PHX-STL
What is the cheapest month to book a flight from Phoenix to St. Louis?
Currently, October is the cheapest month in which you can book a flight from Phoenix to St. Louis (average of $308). Flying from Phoenix to St. Louis in June is currently the most expensive (average of $453). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.
What is the cheapest time of day to fly from PHX to STL?
Find hourly flight availability from Phoenix to St. Louis. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated August 5, 2026.
A simple way to save on the total cost of your ticket is to fly from Phoenix to St. Louis in the afternoon. If you’re flexible enough to do this you can expect to save up to 15% on your trip compared to booking a flight at noon.
How much does it cost to fly round-trip from Phoenix to St. Louis?
Airfare is below average for this route at the moment.
Phoenix to St. Louis flights typically cost between $318 and $435 in September.The cheapest round-trip price found within the last 5 days was $189 on Frontier (Sep 11-Sep 13).
How far ahead should I book a flight from Phoenix to St. Louis?
To ensure you get the cheapest price possible for a flight from Phoenix to St. Louis, you should look to book at least 9 days in advance of your intended travel date. The price of your flight may increase if you delay and leave booking until a week or so before departure.
What is the cheapest day to fly from Phoenix to St. Louis?
Use this chart to determine the cheapest time to fly round-trip from Phoenix to St. Louis. Price data was last updated on August 1, 2026.
Travelers seeking maximum savings on their Phoenix to St. Louis flight should consider departing on Monday afternoons when fares are most often at their lowest. Sunday at noon flights should be avoided if possible as fares are typically the most expensive at this time.
Reviews of airlines servicing St. Louis
Get insights into the airlines that provide service to St. Louis. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to St. Louis. Reviews last updated August 5, 2026.
Get a feel of what it's like to fly with Southwest,American Airlines, andFrontier from Phoenix to St. Louis by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Boarding
8.1
Overall
8.0
Comfort
8.0
Entertainment
7.5
Food
7.0
Crew
8.6
Reviews
1 / 20
2.0
MediocreAnonymous,Feb 2025
MCO - STL
Boarding
8.1
Overall
8.0
Comfort
8.0
Entertainment
7.5
Food
7.0
Crew
8.6
Reviews
1 / 20
2.0
MediocreAnonymous,Feb 2025
MCO - STL
Boarding
8.1
Overall
8.0
Comfort
8.0
Entertainment
7.5
Food
7.0
Crew
8.6
Reviews
1 / 20
2.0
MediocreAnonymous,Feb 2025
MCO - STL
Boarding
8.1
Overall
8.0
Comfort
8.0
Entertainment
7.5
Food
7.0
Crew
8.6
Reviews
1 / 20
2.0
MediocreAnonymous,Feb 2025
MCO - STL
Related info for your journey
Find useful and relevant information for your journey from Phoenix to St. Louis. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
Traveling to a place near St. Louis?
Book flights to St. Louis if you plan to visit one of these locationsEdwardsville
Fairview Heights
O'Fallon
Fenton
Swansea
Eureka
Maryland Heights
Collinsville
Wentzville
Glencoe
Chesterfield
Farmington
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Phoenix and St. Louis flights
Browse other Phoenix and St. Louis flight options. Last updated on August 5, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
Other flights to St. Louis
Explore flights to St. Louis departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on August 5, 2026.
Top 3 airlines flying from Phoenix to St. Louis
Discover the top 3 airlines that operate flights from Phoenix to St. Louis. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated August 5, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$99 | Average$232 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$229 | Average$384 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$268 | Average$417 | FlexibilityNo cancel fee | On-time63% |