$38+ Cheap flights from Arizona to St. Louis (STL)
This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 10/28. Fares are subject to change and may not be available on all flights or dates of travel.
PHX — STL
Nov 3 — Nov 101
Round-trip
1 adult, Economy
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Find cheap flights from Arizona 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.Cheap flight deals from Arizona to St. Louis
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Cheapest flights from Arizona to St. LouisExplore the most affordable flight options available from Arizona to St. Louis. Find the lowest fares from popular airlines and budget airlines, with prices last updated on October 4, 2026.
Explore the most affordable flight options available from Arizona to St. Louis. Find the lowest fares from popular airlines and budget airlines, with prices last updated on October 4, 2026.
This Mytrip deal was found by Cheapflights users on 10/3. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/177:15 am -
2 stops33h 27m
Mon 11/233:04 pm -
1 stop7h 12m
Deal found 10/3![Frontier logo]()
$270
This Kiwi.com deal was found by Cheapflights users on 10/3. 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.
Tue 12/86:49 am -
2 stops27h 28m
Mon 12/147:54 pm -
1 stop5h 55m
Deal found 10/3![Frontier logo]()
$275
This Kiwi.com deal was found by Cheapflights users on 10/1. 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.
Thu 10/228:51 pm -
2 stops18h 07m
Fri 10/307:59 pm -
1 stop14h 05m
Deal found 10/1![Frontier logo]()
$276
This Mytrip deal was found by Cheapflights users on 9/30. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/216:15 am -
2 stops9h 25m
Sun 10/254:30 pm -
2 stops28h 23m
Deal found 9/30![Frontier logo]()
$277
This Kiwi.com deal was found by Cheapflights users on 10/1. 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.
Thu 10/228:51 pm -
1 stop20h 24m
Mon 10/265:53 pm -
1 stop7h 06m
Deal found 10/1![Frontier logo]()
$278
This Kiwi.com deal was found by Cheapflights users on 10/1. 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.
Wed 10/214:34 pm -
1 stop16h 57m
Fri 10/307:59 pm -
1 stop14h 05m
Deal found 10/1![Frontier logo]()
$279
This Kiwi.com deal was found by Cheapflights users on 10/1. 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 10/239:15 am -
1 stop8h 00m
Mon 10/268:00 pm -
1 stop5h 48m
Deal found 10/1![Frontier logo]()
$280
This Mytrip deal was found by Cheapflights users on 10/1. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/212:00 pm -
2 stops19h 31m
Mon 10/266:35 pm -
2 stops20h 10m
Deal found 10/1![Frontier logo]()
$281
This Kiwi.com deal was found by Cheapflights users on 9/30. 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 12/169:50 pm -
2 stops16h 07m
Fri 1/17:49 pm -
1 stop5h 41m
Deal found 9/30![Frontier logo]()
$282
This Kiwi.com deal was found by Cheapflights users on 10/1. 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.
Wed 12/169:50 pm -
2 stops16h 07m
Thu 1/285:59 pm -
1 stop7h 42m
Deal found 10/1![Frontier logo]()
$283
This Kiwi.com deal was found by Cheapflights users on 10/1. 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.
Thu 10/228:51 pm -
1 stop20h 24m
Wed 10/284:18 pm -
1 stop5h 36m
Deal found 10/1![Frontier logo]()
$284
This American Airlines deal was found by Cheapflights users on 9/30. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/193:41 pm -
1 stop7h 20m
Mon 11/237:58 am -
1 stop8h 31m
Deal found 9/30![American Airlines logo]()
$355
Best flights from Arizona to St. LouisDiscover carefully curated flight deals from Arizona to St. Louis that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated October 4, 2026.
Discover carefully curated flight deals from Arizona to St. Louis that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated October 4, 2026.
This Southwest deal was found by Cheapflights users on 10/2. 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 10/268:25 pm -
Nonstop2h 55m
Mon 11/28:30 am -
1 stop5h 30m
Deal found 10/2![Southwest logo]()
$367
This United Airlines deal was found by Cheapflights users on 9/29. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/67:30 am -
1 stop5h 43m
Sat 11/78:30 am -
2 stops8h 27m
Deal found 9/29![United Airlines logo]()
$370
This American Airlines deal was found by Cheapflights users on 9/30. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/246:43 am -
1 stop6h 03m
Tue 12/292:45 pm -
1 stop6h 46m
Deal found 9/30![American Airlines logo]()
$576
This Southwest deal was found by Cheapflights users on 10/1. 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.
Tue 12/11:35 pm -
Nonstop2h 50m
Wed 12/28:25 am -
1 stop5h 00m
Deal found 10/1![Southwest logo]()
$403
This United Airlines deal was found by Cheapflights users on 10/3. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/226:30 am -
1 stop5h 08m
Fri 11/276:00 am -
2 stops8h 24m
Deal found 10/3![United Airlines logo]()
$421
This Southwest deal was found by Cheapflights users on 9/29. 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 11/66:55 am -
2 stops11h 15m
Sat 11/76:35 am -
2 stops9h 45m
Deal found 9/29![Southwest logo]()
$426
This United Airlines deal was found by Cheapflights users on 9/30. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 2/26:50 am -
1 stop4h 53m
Wed 2/38:30 am -
1 stop7h 36m
Deal found 9/30![United Airlines logo]()
$465
This Southwest deal was found by Cheapflights users on 10/3. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/55:45 am -
Nonstop2h 45m
Sun 11/89:45 pm -
Nonstop3h 30m
Deal found 10/3![Southwest logo]()
$431
This Southwest deal was found by Cheapflights users on 9/29. 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.
Sun 11/13:10 pm -
Nonstop2h 50m
Mon 11/29:45 pm -
Nonstop3h 25m
Deal found 9/29![Southwest logo]()
$431
This United Airlines deal was found by Cheapflights users on 10/1. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/164:42 pm -
1 stop5h 02m
Tue 10/209:00 am -
1 stop8h 06m
Deal found 10/1![United Airlines logo]()
$487
This Southwest deal was found by Cheapflights users on 9/29. 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 11/2512:25 pm -
1 stop5h 45m
Sat 11/285:15 am -
Nonstop3h 25m
Deal found 9/29![Southwest logo]()
$431
This Southwest deal was found by Cheapflights users on 9/29. 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 11/116:15 pm -
Nonstop2h 55m
Sun 11/228:50 am -
1 stop6h 05m
Deal found 9/29![Southwest logo]()
$437
This American Airlines deal was found by Cheapflights users on 10/1. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/1611:58 am -
1 stop6h 45m
Tue 10/208:03 am -
1 stop5h 25m
Deal found 10/1![American Airlines logo]()
$720
This Southwest deal was found by Cheapflights users on 10/3. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/2312:50 pm -
1 stop5h 20m
Sat 11/285:15 am -
Nonstop3h 25m
Deal found 10/3![Southwest logo]()
$450
This Southwest deal was found by Cheapflights users on 9/29. 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.
Sat 11/215:10 am -
Nonstop2h 50m
Sun 11/295:35 am -
Nonstop3h 25m
Deal found 9/29![Southwest logo]()
$451
This Southwest deal was found by Cheapflights users on 9/29. 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.
Sat 11/213:20 pm -
Nonstop2h 50m
Mon 11/309:45 pm -
Nonstop3h 30m
Deal found 9/29![Southwest logo]()
$451
This Southwest deal was found by Cheapflights users on 9/29. 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 11/235:45 am -
Nonstop2h 45m
Sun 11/295:35 am -
Nonstop3h 25m
Deal found 9/29![Southwest logo]()
$451
This Southwest deal was found by Cheapflights users on 10/3. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/298:00 am -
1 stop4h 45m
Sun 11/17:20 pm -
Nonstop3h 20m
Deal found 10/3![Southwest logo]()
$469
Last-minute flights from Arizona to St. LouisDiscover last-minute flight deals from Arizona to St. Louis. Data last updated October 4, 2026 and is based on user searches.
Discover last-minute flight deals from Arizona to St. Louis. Data last updated October 4, 2026 and is based on user searches.
This Mytrip deal was found by Cheapflights users on 9/30. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/216:15 am -
2 stops9h 25m
Sun 10/254:30 pm -
2 stops28h 23m
Deal found 9/30![Frontier logo]()
$277
This Kiwi.com deal was found by Cheapflights users on 10/1. 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.
Wed 10/214:34 pm -
1 stop16h 57m
Fri 10/307:59 pm -
1 stop14h 05m
Deal found 10/1![Frontier logo]()
$279
This Mytrip deal was found by Cheapflights users on 10/1. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/212:00 pm -
2 stops19h 31m
Mon 10/266:35 pm -
2 stops20h 10m
Deal found 10/1![Frontier logo]()
$281
This Kiwi.com deal was found by Cheapflights users on 10/1. 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.
Wed 10/219:20 pm -
1 stop12h 11m
Wed 10/284:18 pm -
1 stop5h 36m
Deal found 10/1![Frontier logo]()
$287
This Kiwi.com deal was found by Cheapflights users on 10/1. 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.
Thu 10/228:51 pm -
2 stops18h 07m
Fri 10/307:59 pm -
1 stop14h 05m
Deal found 10/1![Frontier logo]()
$276
This Kiwi.com deal was found by Cheapflights users on 10/1. 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.
Thu 10/228:51 pm -
1 stop20h 24m
Mon 10/265:53 pm -
1 stop7h 06m
Deal found 10/1![Frontier logo]()
$278
This Kiwi.com deal was found by Cheapflights users on 10/1. 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.
Thu 10/228:51 pm -
1 stop20h 24m
Wed 10/284:18 pm -
1 stop5h 36m
Deal found 10/1![Frontier logo]()
$284
This Mytrip deal was found by Cheapflights users on 10/1. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/228:51 pm -
2 stops18h 07m
Fri 10/238:00 pm -
2 stops18h 17m
Deal found 10/1![Frontier logo]()
$288
This Kiwi.com deal was found by Cheapflights users on 10/1. 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 10/239:15 am -
1 stop8h 00m
Mon 10/268:00 pm -
1 stop5h 48m
Deal found 10/1![Frontier logo]()
$280
This Mytrip deal was found by Cheapflights users on 9/30. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/96:00 am -
2 stops16h 16m
Thu 11/124:26 pm -
2 stops29h 28m
Deal found 9/30![Frontier logo]()
$289
This Mytrip deal was found by Cheapflights users on 10/3. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/177:15 am -
2 stops33h 27m
Mon 11/233:04 pm -
1 stop7h 12m
Deal found 10/3![Frontier logo]()
$270
This American Airlines deal was found by Cheapflights users on 9/30. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/193:41 pm -
1 stop7h 20m
Mon 11/237:58 am -
1 stop8h 31m
Deal found 9/30![American Airlines logo]()
$355
One-way flights from Arizona to St. LouisSearch for one-way flight options from Arizona to St. Louis. Find affordable one-way fares based on user searches. Data last updated October 4, 2026.
Search for one-way flight options from Arizona to St. Louis. Find affordable one-way fares based on user searches. Data last updated October 4, 2026.
This Frontier deal was found by Cheapflights users on 9/30. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/287:15 am -
1 stop6h 08m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/30![Frontier logo]()
$38
This Cheapflightsfares deal was found by Cheapflights users on 9/29. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/308:59 pm -
1 stop20h 15m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/29![Frontier logo]()
$39
This Cheapflightsfares deal was found by Cheapflights users on 9/30. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/208:51 pm -
1 stop16h 33m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/30![Frontier logo]()
$44
This Kiwi.com deal was found by Cheapflights users on 9/30. 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 12/11:56 pm -
1 stop20h 10m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/30![Frontier logo]()
$53
This Super.com deal was found by Cheapflights users on 9/30. 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/117:15 am -
1 stop7h 08m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/30![Frontier logo]()
$57
This Kiwi.com deal was found by Cheapflights users on 10/1. 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.
Wed 11/47:15 am -
1 stop7h 08m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/1![Frontier logo]()
$60
This Kiwi.com deal was found by Cheapflights users on 9/30. 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 10/271:45 pm -
2 stops23h 38m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/30![Frontier logo]()
$63
This United Airlines deal was found by Cheapflights users on 9/29. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/147:30 am -
1 stop5h 43m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/29![United Airlines logo]()
$178
This Southwest deal was found by Cheapflights users on 10/2. 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.
Sat 12/196:00 pm -
1 stop5h 50m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/2![Southwest logo]()
$188
This Southwest deal was found by Cheapflights users on 9/29. 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 10/303:00 pm -
2 stops7h 40m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/29![Southwest logo]()
$193
This Southwest deal was found by Cheapflights users on 9/29. 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 11/66:55 am -
2 stops11h 15m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/29![Southwest logo]()
$199
This Southwest deal was found by Cheapflights users on 10/2. 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.
Sat 10/243:35 pm -
1 stop5h 20m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/2![Southwest logo]()
$209
Find flight deals from Arizona to St. Louis
Keep the following information in mind while searching for Arizona to St. Louis flight deals. Data was last updated October 4, 2026.
Round-trip from | $270 (Mytrip) |
|---|---|
One-way from | $38 (Frontier) |
Popular in | June |
Cheapest in | January |
Average price | $355 |
Good round-trip deal | $381 or less |
Good one-way deal | $208 or less |
Cheapflights Fare Finder
Customize your flight search to find flights from Arizona 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 7,457,451 searches. Data last updated October 4, 2026.
Use the filters below to find and compare flights from Arizona to St. Louis that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
PhoenixSt. Louis
PHX Phoenix Sky Harbor Intl - STL Lambert-St Louis
PHXSTL
Phoenix Sky Harbor Intl
Sat 10/31
11:35 am-4:25 pm
Nonstop2h 50m
Lambert-St Louis
Wed 12/31
12:00 am-11:00 pm
Nonstop0h 00m
$179
PhoenixSt. Louis
PHX Phoenix Sky Harbor Intl - STL Lambert-St Louis
PHXSTL
Phoenix Sky Harbor Intl
Thu 10/22
5:10 am-10:00 am
Nonstop2h 50m
Lambert-St Louis
Wed 12/31
12:00 am-11:00 pm
Nonstop0h 00m
$179
TucsonSt. Louis
TUS Tucson - STL Lambert-St Louis
TUSSTL
Tucson
Fri 11/6
2:30 pm-8:59 pm
1 stop5h 29m
Lambert-St Louis
Wed 12/31
12:00 am-11:00 pm
Nonstop0h 00m
$188
TucsonSt. Louis
TUS Tucson - STL Lambert-St Louis
TUSSTL
Tucson
Sat 12/19
6:00 pm-12:50 am
1 stop5h 50m
Lambert-St Louis
Wed 12/31
12:00 am-11:00 pm
Nonstop0h 00m
$188
TucsonSt. Louis
TUS Tucson - STL Lambert-St Louis
TUSSTL
Tucson
Sun 11/22
6:30 am-3:43 pm
2 stops8h 13m
Lambert-St Louis
Wed 12/31
12:00 am-11:00 pm
Nonstop0h 00m
$193
TucsonSt. Louis
TUS Tucson - STL Lambert-St Louis
TUSSTL
Tucson
Sat 11/14
7:30 am-4:59 pm
2 stops8h 29m
Lambert-St Louis
Wed 12/31
12:00 am-11:00 pm
Nonstop0h 00m
$207
TucsonSt. Louis
TUS Tucson - STL Lambert-St Louis
TUSSTL
Tucson
Fri 12/4
6:05 am-5:25 pm
2 stops10h 20m
Lambert-St Louis
Wed 12/31
12:00 am-11:00 pm
Nonstop0h 00m
$214
PhoenixSt. Louis
PHX Phoenix Sky Harbor Intl - STL Lambert-St Louis
PHXSTL
Phoenix Sky Harbor Intl
Sat 2/20
3:10 pm-10:30 pm
2 stops6h 20m
Lambert-St Louis
Wed 12/31
12:00 am-11:00 pm
Nonstop0h 00m
$214
PhoenixSt. Louis
PHX Phoenix Sky Harbor Intl - STL Lambert-St Louis
PHXSTL
Phoenix Sky Harbor Intl
Fri 10/30
7:45 am-12:35 pm
Nonstop2h 50m
Lambert-St Louis
Wed 12/31
12:00 am-11:00 pm
Nonstop0h 00m
$222
Quickest round-trip
PhoenixSt. Louis
PHX Phoenix Sky Harbor Intl - STL Lambert-St Louis
PHXSTL
Phoenix Sky Harbor Intl
Fri 1/22
6:05 pm-9:50 pm
Nonstop2h 45m
Lambert-St Louis
Wed 12/31
12:00 am-11:00 pm
Nonstop0h 00m
$222
Showing 1-10 of 40 resultsSorted by cheapest first
Best time to book a flight from Arizona to St. Louis
Have a flexible travel schedule? Discover the best time to fly to St. Louis from Arizona with our price prediction graph.
PHX-STL
TUS-STL
FLG-STL
PRC-STL
YUM-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 Arizona to St. Louis
USAZ-STL
PHX-STL
TUS-STL
FLG-STL
PRC-STL
What is the cheapest month to book a flight from Arizona to St. Louis?
Currently, January is the cheapest month in which you can book a flight from Arizona to St. Louis (average of $319). Flying from Arizona to St. Louis in March 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 AZ to STL?
Find hourly flight availability from Arizona 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 October 4, 2026.
It’s optimal to fly from Arizona to St. Louis in the afternoon. By choosing this option you can save up to 23% on the cost of your flight, compared to a flight at noon.
How much does it cost to fly round-trip from Arizona to St. Louis?
Airfare is below average for this route at the moment.
Arizona to St. Louis flights typically cost between $278 and $402 in November.The cheapest round-trip price found within the last 5 days was $270 on Frontier (Nov 17-Nov 23).
How far ahead should I book a flight from Arizona to St. Louis?
The price you pay for your flight from Arizona to St. Louis may vary depending on when you book. For the best chance of a lower fare, look to book 9 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.
What is the cheapest day to fly from Arizona to St. Louis?
Use this chart to determine the cheapest time to fly round-trip from Arizona to St. Louis. Price data was last updated on October 3, 2026.
Travelers seeking maximum savings on their Arizona to St. Louis flight should consider departing on Thursday 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.
Related info for your journey
Find useful and relevant information for your journey from Arizona 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 locationsFairview Heights
O'Fallon
Fenton
Swansea
Eureka
Wentzville
Chesterfield
Maryland Heights
Collinsville
Edwardsville
Glencoe
Browse thousands of different options on Cheapflights for your next trip
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Alternative routes for Arizona to St. Louis
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Complete your trip
Complete your trip to St. Louis by adding a car rental and/or hotel reservation to your travel itinerary.
Search flights from Arizona to St. Louis by cabin class
Find flights from Arizona to St. Louis, based on your preferred cabin class, be it economy, premium economy, business, or first class.
Arizona and St. Louis flights
Browse other Arizona and St. Louis flight options. Last updated on October 4, 2026.
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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 October 4, 2026.
Arizona to St. Louis flights
Consider these flights traveling from Arizona to St. Louis.
Top 4 airlines flying from Arizona to St. Louis
Discover the top 4 airlines that operate flights from Arizona 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 7,457,451 searches. Data last updated October 4, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$101 | Average$248 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$229 | Average$459 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$286 | Average$444 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$296 | Average$485 | FlexibilityNo cancel fee | On-time63% |