$67+ Cheap flights from Arizona 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 10/6. 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 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 August 5, 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 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 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.
Wed 9/169:45 am -
1 stop7h 32m
Wed 9/238:10 pm -
1 stop14h 18m
Deal found 8/1![Frontier logo]()
$168
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 Travelocity deal was found by Cheapflights users on 7/30. 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 Travelocity is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/156:29 pm -
1 stop20h 41m
Tue 9/226:29 am -
2 stops13h 58m
Deal found 7/30![Alaska Airlines logo]()
$175
This Travelocity deal was found by Cheapflights users on 7/30. 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 Travelocity is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/156:15 am -
Nonstop3h 17m
Tue 9/223:19 pm -
1 stop9h 58m
Deal found 7/30![Multiple Airlines logo]()
$178
This American Airlines 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/911:31 am -
1 stop5h 36m
Wed 9/162:30 pm -
1 stop5h 50m
Deal found 8/1![American Airlines logo]()
$187
This American Airlines 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/166:05 am -
1 stop6h 39m
Wed 9/238:00 am -
1 stop6h 23m
Deal found 8/4![American Airlines logo]()
$188
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 9/118:44 pm -
1 stop20h 33m
Wed 9/238:10 pm -
1 stop14h 18m
Deal found 8/2![Frontier logo]()
$189
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 7/30. 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.
Mon 8/248:35 am -
1 stop8h 38m
Mon 8/317:58 pm -
1 stop16h 13m
Deal found 7/30![Frontier logo]()
$192
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 9/239:45 am -
1 stop7h 32m
Mon 9/288:10 pm -
1 stop14h 18m
Deal found 7/31![Frontier logo]()
$196
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 August 5, 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 August 5, 2026.
This Kiwi.com deal was found by Cheapflights users on 7/30. 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.
Mon 8/248:35 am -
1 stop8h 38m
Mon 8/316:17 pm -
2 stops20h 25m
Deal found 7/30![Frontier logo]()
$209
This Expedia deal was found by Cheapflights users on 7/30. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/101:25 pm -
1 stop8h 34m
Thu 9/2412:27 pm -
Nonstop3h 35m
Deal found 7/30![Multiple Airlines logo]()
$228
This Alaska Airlines 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/166:29 pm -
1 stop20h 41m
Wed 9/236:29 am -
2 stops12h 19m
Deal found 8/2![Alaska Airlines logo]()
$240
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 9/223:25 pm -
Nonstop3h 00m
Tue 10/68:35 am -
1 stop5h 05m
Deal found 7/31![Southwest logo]()
$287
This American Airlines 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/2912:09 pm -
1 stop4h 58m
Tue 10/65:40 am -
2 stops7h 32m
Deal found 7/31![American Airlines logo]()
$397
This United Airlines 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/91:40 pm -
1 stop4h 56m
Tue 10/133:12 pm -
1 stop7h 58m
Deal found 7/31![United Airlines logo]()
$403
This Delta 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/166:05 am -
2 stops9h 32m
Wed 9/232:25 pm -
2 stops10h 16m
Deal found 8/2![Delta logo]()
$419
This Super.com deal was found by Cheapflights users on 7/30. 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.
Mon 8/2412:25 pm -
Nonstop3h 25m
Thu 8/276:45 pm -
Nonstop3h 35m
Deal found 7/30![Frontier logo]()
$219
This Alaska Airlines 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/1011:55 am -
1 stop10h 04m
Tue 9/156:29 am -
2 stops13h 58m
Deal found 8/1![Alaska Airlines logo]()
$260
This Alaska Airlines 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/1010:30 am -
1 stop11h 29m
Wed 9/166:29 am -
2 stops13h 58m
Deal found 8/1![Alaska Airlines logo]()
$260
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.
Sat 8/293:25 pm -
Nonstop2h 55m
Mon 8/312:20 pm -
1 stop4h 30m
Deal found 8/2![Southwest logo]()
$293
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 7/30. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/245:00 am -
Nonstop2h 50m
Mon 8/318:45 pm -
Nonstop3h 10m
Deal found 7/30![Southwest logo]()
$325
This Delta 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/91:26 pm -
1 stop8h 28m
Tue 10/136:00 am -
1 stop8h 16m
Deal found 8/4![Delta logo]()
$449
This Southwest deal was found by Cheapflights users on 7/30. 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 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 9/136:15 am -
Nonstop3h 15m
Deal found 7/30![Southwest logo]()
$347
This United Airlines 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/51:30 pm -
1 stop6h 29m
Wed 12/91:30 pm -
1 stop5h 45m
Deal found 8/4![United Airlines logo]()
$475
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.
Fri 9/46:55 pm -
Nonstop3h 00m
Mon 9/76:00 am -
Nonstop3h 15m
Deal found 7/31![Southwest logo]()
$347
This United Airlines 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/205:15 am -
1 stop5h 25m
Wed 10/213:12 pm -
1 stop7h 58m
Deal found 8/2![United Airlines logo]()
$475
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.
Sat 8/297:50 am -
1 stop5h 40m
Sat 9/58:25 am -
1 stop6h 15m
Deal found 7/31![Southwest logo]()
$365
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 7/30. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/285:00 am -
Nonstop2h 50m
Fri 9/48:45 pm -
Nonstop3h 15m
Deal found 7/30![Southwest logo]()
$397
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 9/117:25 pm -
Nonstop3h 15m
Wed 9/235:35 am -
Nonstop3h 25m
Deal found 8/2![Southwest logo]()
$417
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 9/36:10 am -
2 stops9h 30m
Wed 9/92:45 pm -
2 stops7h 55m
Deal found 8/4![Southwest logo]()
$426
Last-minute flights from Arizona to St. LouisDiscover last-minute flight deals from Arizona to St. Louis. Data last updated August 5, 2026 and is based on user searches.
Discover last-minute flight deals from Arizona 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 7/30. 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.
Mon 8/248:35 am -
1 stop8h 38m
Mon 8/317:58 pm -
1 stop16h 13m
Deal found 7/30![Frontier logo]()
$192
This Kiwi.com deal was found by Cheapflights users on 7/30. 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.
Mon 8/248:35 am -
1 stop8h 38m
Tue 8/255:27 pm -
1 stop7h 33m
Deal found 7/30![Frontier logo]()
$197
This American Airlines 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/2510:44 am -
1 stop7h 42m
Sat 8/295:11 pm -
1 stop6h 34m
Deal found 8/3![American Airlines logo]()
$197
This American Airlines 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/911:31 am -
1 stop5h 36m
Wed 9/162:30 pm -
1 stop5h 50m
Deal found 8/1![American Airlines logo]()
$187
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 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 9/118:44 pm -
1 stop20h 33m
Wed 9/238:10 pm -
1 stop14h 18m
Deal found 8/2![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.
Fri 9/119:45 am -
1 stop7h 32m
Sun 9/208:10 pm -
1 stop14h 18m
Deal found 8/1![Frontier logo]()
$198
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 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.
Wed 9/169:45 am -
1 stop7h 32m
Wed 9/238:10 pm -
1 stop14h 18m
Deal found 8/1![Frontier logo]()
$168
This American Airlines 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/166:05 am -
1 stop6h 39m
Wed 9/238:00 am -
1 stop6h 23m
Deal found 8/4![American Airlines logo]()
$188
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 9/239:45 am -
1 stop7h 32m
Mon 9/288:10 pm -
1 stop14h 18m
Deal found 7/31![Frontier logo]()
$196
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 August 5, 2026.
Search for one-way flight options from Arizona to St. Louis. Find affordable one-way fares based on user searches. Data last updated August 5, 2026.
This Trip.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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/68:44 pm -
1 stop20h 33m
Deal found 7/31![Frontier logo]()
$67
This Super.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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/1712:50 pm -
Nonstop3h 25m
Deal found 8/4![Frontier logo]()
$72
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 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 9/99:45 am -
1 stop7h 32m
Deal found 7/31![Frontier logo]()
$82
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 10/3010:35 am -
1 stop6h 40m
Deal found 8/1![Frontier logo]()
$88
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.
Sat 10/313:32 pm -
1 stop26h 43m
Deal found 8/1![Frontier logo]()
$89
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 10/293:32 pm -
1 stop25h 43m
Deal found 7/31![Frontier logo]()
$90
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.
Thu 10/111:52 am -
1 stop29h 25m
Deal found 8/1![Frontier logo]()
$92
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 Delta 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/212:40 am -
1 stop7h 54m
Deal found 7/31![Delta 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
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 August 5, 2026.
Round-trip from | $153 (Kiwi.com) |
|---|---|
One-way from | $67 (Trip.com) |
Popular in | June |
Cheapest in | October |
Average price | $355 |
Good round-trip deal | $313 or less |
Good one-way deal | $218 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 2,558,603 searches. Data last updated August 5, 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 - STL
PHXSTL
Phoenix Sky Harbor Intl
Mon 8/24
8:35 am-7:13 pm
1 stop8h 38m
Lambert-St Louis
Mon 8/31
6:17 pm-12:42 pm
2 stops20h 25m
$209
Las VegasSt. Louis
LAS - STL
LASSTL
Las Vegas Harry Reid Intl
Mon 8/24
12:25 pm-5:50 pm
Nonstop3h 25m
Lambert-St Louis
Thu 8/27
6:45 pm-8:20 pm
Nonstop3h 35m
$219
Las VegasSt. Louis
LAS - STL
LASSTL
Las Vegas Harry Reid Intl
Thu 9/10
1:25 pm-11:59 pm
1 stop8h 34m
Lambert-St Louis
Thu 9/24
12:27 pm-2:02 pm
Nonstop3h 35m
$228
Las VegasSt. Louis
LAS - STL
LASSTL
Las Vegas Harry Reid Intl
Wed 9/16
6:29 pm-5:10 pm
1 stop20h 41m
Lambert-St Louis
Wed 9/23
6:29 am-4:48 pm
2 stops12h 19m
$240
Las VegasSt. Louis
LAS - STL
LASSTL
Las Vegas Harry Reid Intl
Thu 9/10
11:55 am-11:59 pm
1 stop10h 04m
Lambert-St Louis
Tue 9/15
6:29 am-6:27 pm
2 stops13h 58m
$260
Las VegasSt. Louis
LAS - STL
LASSTL
Las Vegas Harry Reid Intl
Thu 9/10
10:30 am-11:59 pm
1 stop11h 29m
Lambert-St Louis
Wed 9/16
6:29 am-6:27 pm
2 stops13h 58m
$260
PhoenixSt. Louis
PHX - STL
PHXSTL
Phoenix Sky Harbor Intl
Tue 9/22
3:25 pm-8:25 pm
Nonstop3h 00m
Lambert-St Louis
Tue 10/6
8:35 am-11:40 am
1 stop5h 05m
$287
PhoenixSt. Louis
PHX - STL
PHXSTL
Phoenix Sky Harbor Intl
Sat 8/29
3:25 pm-8:20 pm
Nonstop2h 55m
Lambert-St Louis
Mon 8/31
2:20 pm-4:50 pm
1 stop4h 30m
$293
PhoenixSt. Louis
PHX - STL
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
Quickest round-trip
PhoenixSt. Louis
PHX - STL
PHXSTL
Phoenix Sky Harbor Intl
Mon 8/24
5:00 am-9:50 am
Nonstop2h 50m
Lambert-St Louis
Mon 8/31
8:45 pm-9:55 pm
Nonstop3h 10m
$325
Showing 1-10 of 54 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.
LAS-STL
PHX-STL
TUS-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
LAS-STL
PHX-STL
TUS-STL
What is the cheapest month to book a flight from Arizona to St. Louis?
Currently, October is the cheapest month in which you can book a flight from Arizona to St. Louis (average of $308). 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 August 5, 2026.
It’s optimal to fly from Arizona to St. Louis in the afternoon. By choosing this option you can save up to 15% 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 $302 and $425 in September.The cheapest round-trip price found within the last 5 days was $153 on Frontier (Sep 16-Sep 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 August 1, 2026.
Travelers seeking maximum savings on their Arizona 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.
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 locationsEdwardsville
Fairview Heights
O'Fallon
Fenton
Swansea
Eureka
Maryland Heights
Collinsville
Wentzville
Glencoe
Chesterfield
Farmington
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Complete your trip
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Arizona and St. Louis flights
Browse other Arizona and St. Louis flight options. Last updated on August 5, 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 August 5, 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 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$450 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$256 | Average$406 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$266 | Average$447 | FlexibilityNo cancel fee | On-time63% |