$60+ 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 4/25. Fares are subject to change and may not be available on all flights or dates of travel.
PHX — STL
Mar 28 — Apr 41
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 February 26, 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 February 26, 2026.
This Super.com deal was found by Cheapflights users on 2/24. 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.
Thu 4/163:35 pm
LAS
- STL
Nonstop3h 25m
Frontier
Sun 4/199:55 pm
STL
- LAS
Nonstop3h 42m
Frontier
Deal found 2/24![Frontier logo]()
$130
This Kiwi.com deal was found by Cheapflights users on 2/22. 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 4/186:50 am
PHX
- STL
1 stop10h 42m
Frontier
Sat 4/258:17 pm
STL
- PHX
1 stop13h 19m
Frontier
Deal found 2/22![Frontier logo]()
$132
This Super.com deal was found by Cheapflights users on 2/25. 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 3/256:05 am
LAS
- STL
Nonstop3h 14m
Frontier
Sun 3/298:06 pm
STL
- LAS
Nonstop4h 02m
Frontier
Deal found 2/25![Frontier logo]()
$137
This Cheapflightsfares deal was found by Cheapflights users on 2/25. 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.
Thu 4/303:35 pm
LAS
- STL
Nonstop3h 25m
Frontier
Sun 5/311:28 am
STL
- LAS
1 stop13h 00m
Frontier
Deal found 2/25![Frontier logo]()
$143
This Frontier deal was found by Cheapflights users on 2/24. 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.
Thu 4/308:14 am
LAS
- STL
1 stop9h 07m
Frontier
Mon 5/49:55 pm
STL
- LAS
Nonstop3h 42m
Frontier
Deal found 2/24![Frontier logo]()
$144
This Super.com deal was found by Cheapflights users on 2/23. 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.
Sat 3/286:05 am
LAS
- STL
Nonstop3h 14m
Frontier
Sun 4/510:12 pm
STL
- LAS
Nonstop3h 42m
Frontier
Deal found 2/23![Frontier logo]()
$146
This Super.com deal was found by Cheapflights users on 2/22. 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.
Tue 3/177:00 am
LAS
- STL
Nonstop3h 15m
Frontier
Fri 3/2012:14 pm
STL
- LAS
Nonstop3h 57m
Frontier
Deal found 2/22![Frontier logo]()
$147
This Kiwi.com deal was found by Cheapflights users on 2/23. 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 4/84:27 pm
PHX
- STL
1 stop17h 52m
Frontier
Sat 4/111:06 pm
STL
- PHX
Nonstop3h 35m
Frontier
Deal found 2/23![Frontier logo]()
$159
This Kiwi.com deal was found by Cheapflights users on 2/23. 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 4/29:24 pm
PHX
- STL
1 stop10h 24m
Frontier
Mon 4/68:19 pm
STL
- PHX
1 stop17h 26m
Frontier
Deal found 2/23![Frontier logo]()
$161
This Kiwi.com deal was found by Cheapflights users on 2/23. 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 4/99:24 pm
PHX
- STL
1 stop10h 24m
Frontier
Mon 4/138:19 pm
STL
- PHX
1 stop23h 28m
Frontier
Deal found 2/23![Frontier logo]()
$163
This Kiwi.com deal was found by Cheapflights users on 2/23. 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 3/265:09 pm
PHX
- STL
Nonstop2h 53m
Frontier
Mon 3/308:12 pm
STL
- PHX
1 stop19h 49m
Frontier
Deal found 2/23![Frontier logo]()
$164
This Super.com deal was found by Cheapflights users on 2/23. 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.
Fri 3/276:05 am
LAS
- STL
Nonstop3h 14m
Frontier
Sun 3/298:06 pm
STL
- LAS
Nonstop4h 02m
Frontier
Deal found 2/23![Frontier logo]()
$165
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 February 26, 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 February 26, 2026.
This Super.com deal was found by Cheapflights users on 2/22. 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.
Tue 3/177:00 am
LAS
- STL
Nonstop3h 15m
Frontier
Fri 3/2012:14 pm
STL
- LAS
Nonstop3h 57m
Frontier
Deal found 2/22![Frontier logo]()
$147
This United Airlines deal was found by Cheapflights users on 2/24. 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.
Wed 6/312:59 am
LAS
- STL
1 stop7h 08m
United Airlines
Sun 6/75:10 am
STL
- LAS
1 stop5h 57m
United Airlines
Deal found 2/24![United Airlines logo]()
$233
This Delta deal was found by Cheapflights users on 2/22. 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.
Tue 5/2612:45 am
LAS
- STL
1 stop6h 01m
Delta
Sat 5/305:36 pm
STL
- LAS
1 stop7h 36m
Delta
Deal found 2/22![Delta logo]()
$233
This Southwest deal was found by Cheapflights users on 2/23. 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 4/85:35 am
PHX
- STL
Nonstop2h 50m
Southwest
Mon 4/136:00 pm
STL
- PHX
Nonstop3h 25m
Southwest
Deal found 2/23![Southwest logo]()
$260
This Frontier deal was found by Cheapflights users on 2/22. 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.
Tue 3/246:05 am
LAS
- STL
Nonstop3h 14m
Frontier
Fri 3/278:12 pm
STL
- LAS
1 stop5h 28m
Frontier
Deal found 2/22![Frontier logo]()
$194
This Southwest deal was found by Cheapflights users on 2/22. 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 4/186:40 am
PHX
- STL
Nonstop2h 50m
Southwest
Sat 4/255:20 pm
STL
- PHX
1 stop6h 05m
Southwest
Deal found 2/22![Southwest logo]()
$268
This Delta deal was found by Cheapflights users on 2/25. 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.
Thu 6/255:30 pm
LAS
- STL
1 stop5h 06m
Delta
Mon 7/66:59 pm
STL
- LAS
1 stop7h 29m
Delta
Deal found 2/25![Delta logo]()
$296
This United Airlines deal was found by Cheapflights users on 2/24. 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 6/511:30 pm
LAS
- STL
1 stop7h 11m
United Airlines
Tue 6/95:10 am
STL
- LAS
2 stops11h 06m
United Airlines
Deal found 2/24![United Airlines logo]()
$318
This Southwest deal was found by Cheapflights users on 2/22. 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 4/116:40 am
PHX
- STL
Nonstop2h 50m
Southwest
Sun 4/129:55 pm
STL
- PHX
Nonstop3h 25m
Southwest
Deal found 2/22![Southwest logo]()
$307
This United Airlines deal was found by Cheapflights users on 2/23. 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.
Mon 8/1012:30 am
LAS
- STL
2 stops14h 05m
United Airlines
Sat 8/156:00 pm
STL
- LAS
1 stop7h 30m
United Airlines
Deal found 2/23![United Airlines logo]()
$318
This Southwest deal was found by Cheapflights users on 2/24. 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 4/277:40 pm
PHX
- STL
Nonstop2h 50m
Southwest
Fri 5/16:05 am
STL
- PHX
Nonstop3h 25m
Southwest
Deal found 2/24![Southwest logo]()
$307
This United Airlines deal was found by Cheapflights users on 2/22. 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 5/2611:30 pm
LAS
- STL
1 stop7h 11m
United Airlines
Sat 5/301:13 pm
STL
- LAS
2 stops13h 08m
United Airlines
Deal found 2/22![United Airlines logo]()
$318
This United Airlines deal was found by Cheapflights users on 2/24. 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 4/257:10 pm
TUS
- STL
1 stop8h 40m
United Airlines
Tue 4/2810:00 am
STL
- TUS
2 stops9h 14m
United Airlines
Deal found 2/24![United Airlines logo]()
$352
This Southwest deal was found by Cheapflights users on 2/26. 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 5/147:35 am
TUS
- STL
2 stops14h 40m
Southwest
Sat 5/162:05 pm
STL
- TUS
1 stop10h 20m
Southwest
Deal found 2/26![Southwest logo]()
$352
This Delta deal was found by Cheapflights users on 2/22. 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.
Thu 3/193:24 pm
TUS
- STL
1 stop6h 34m
Delta
Tue 4/75:21 pm
STL
- TUS
1 stop6h 20m
Delta
Deal found 2/22![Delta logo]()
$461
This Southwest deal was found by Cheapflights users on 2/22. 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 4/244:10 pm
PHX
- STL
Nonstop2h 55m
Southwest
Mon 4/279:40 pm
STL
- PHX
Nonstop3h 25m
Southwest
Deal found 2/22![Southwest logo]()
$355
This United Airlines deal was found by Cheapflights users on 2/24. 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.
Thu 5/286:00 am
LAS
- STL
2 stops8h 33m
United Airlines
Sun 5/315:41 pm
STL
- LAS
1 stop8h 12m
United Airlines
Deal found 2/24![United Airlines logo]()
$381
This Southwest deal was found by Cheapflights users on 2/23. 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 3/275:00 am
PHX
- STL
Nonstop2h 50m
Southwest
Mon 3/305:15 am
STL
- PHX
Nonstop3h 35m
Southwest
Deal found 2/23![Southwest logo]()
$355
This Delta deal was found by Cheapflights users on 2/22. 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.
Thu 3/193:24 pm
TUS
- STL
1 stop6h 34m
Delta
Sun 4/126:29 am
STL
- TUS
1 stop8h 31m
Delta
Deal found 2/22![Delta logo]()
$513
This Southwest deal was found by Cheapflights users on 2/22. 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 5/155:15 am
PHX
- STL
Nonstop2h 50m
Southwest
Sun 5/179:55 pm
STL
- PHX
Nonstop3h 25m
Southwest
Deal found 2/22![Southwest logo]()
$355
This Southwest deal was found by Cheapflights users on 2/23. 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 4/116:40 am
LAS
- STL
Nonstop3h 05m
Southwest
Sat 4/185:00 pm
STL
- LAS
Nonstop3h 40m
Southwest
Deal found 2/23![Southwest logo]()
$385
This United Airlines deal was found by Cheapflights users on 2/24. 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.
Thu 5/74:15 pm
TUS
- STL
2 stops26h 53m
United Airlines
Tue 5/1211:15 am
STL
- TUS
2 stops12h 07m
United Airlines
Deal found 2/24![United Airlines logo]()
$502
This Southwest deal was found by Cheapflights users on 2/23. 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 3/16:05 am
PHX
- STL
Nonstop2h 50m
Southwest
Sat 3/79:40 pm
STL
- PHX
Nonstop3h 30m
Southwest
Deal found 2/23![Southwest logo]()
$420
This Southwest deal was found by Cheapflights users on 2/26. 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 5/307:25 am
TUS
- STL
1 stop8h 45m
Southwest
Sat 6/63:50 pm
STL
- TUS
2 stops7h 50m
Southwest
Deal found 2/26![Southwest logo]()
$458
This Southwest deal was found by Cheapflights users on 2/22. 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 3/1312:45 pm
TUS
- STL
1 stop8h 25m
Southwest
Thu 3/195:35 pm
STL
- TUS
1 stop7h 35m
Southwest
Deal found 2/22![Southwest logo]()
$463
This Southwest deal was found by Cheapflights users on 2/24. 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 3/1010:45 am
TUS
- STL
2 stops8h 40m
Southwest
Tue 3/174:00 pm
STL
- TUS
2 stops8h 20m
Southwest
Deal found 2/24![Southwest logo]()
$503
Last-minute flights from Arizona to St. LouisDiscover last-minute flight deals from Arizona to St. Louis. Data last updated February 26, 2026 and is based on user searches.
Discover last-minute flight deals from Arizona to St. Louis. Data last updated February 26, 2026 and is based on user searches.
This Super.com deal was found by Cheapflights users on 2/23. 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.
Thu 3/125:09 pm
PHX
- STL
Nonstop2h 53m
Frontier
Mon 3/165:46 pm
STL
- PHX
Nonstop3h 41m
Frontier
Deal found 2/23![Frontier logo]()
$168
This Super.com deal was found by Cheapflights users on 2/23. 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 3/166:05 am
LAS
- STL
Nonstop3h 14m
Frontier
Fri 3/2012:14 pm
STL
- LAS
Nonstop3h 57m
Frontier
Deal found 2/23![Frontier logo]()
$175
This Super.com deal was found by Cheapflights users on 2/22. 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.
Tue 3/177:00 am
LAS
- STL
Nonstop3h 15m
Frontier
Fri 3/2012:14 pm
STL
- LAS
Nonstop3h 57m
Frontier
Deal found 2/22![Frontier logo]()
$147
This Kiwi.com deal was found by Cheapflights users on 2/23. 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 3/238:27 pm
PHX
- STL
1 stop12h 52m
Frontier
Mon 3/308:12 pm
STL
- PHX
1 stop23h 34m
Frontier
Deal found 2/23![Frontier logo]()
$181
This Kiwi.com deal was found by Cheapflights users on 2/24. 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 3/246:45 pm
PHX
- STL
1 stop13h 04m
Frontier
Tue 3/3111:27 am
STL
- PHX
2 stops29h 06m
Frontier
Deal found 2/24![Frontier logo]()
$174
This Super.com deal was found by Cheapflights users on 2/25. 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 3/256:05 am
LAS
- STL
Nonstop3h 14m
Frontier
Sun 3/298:06 pm
STL
- LAS
Nonstop4h 02m
Frontier
Deal found 2/25![Frontier logo]()
$137
This Cheapflightsfares deal was found by Cheapflights users on 2/25. 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.
Wed 3/256:05 am
LAS
- STL
Nonstop3h 14m
Frontier
Wed 4/18:16 pm
STL
- LAS
1 stop12h 48m
Frontier
Deal found 2/25![Frontier logo]()
$184
This Kiwi.com deal was found by Cheapflights users on 2/23. 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 3/265:09 pm
PHX
- STL
Nonstop2h 53m
Frontier
Mon 3/308:12 pm
STL
- PHX
1 stop19h 49m
Frontier
Deal found 2/23![Frontier logo]()
$164
This Super.com deal was found by Cheapflights users on 2/23. 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.
Fri 3/276:05 am
LAS
- STL
Nonstop3h 14m
Frontier
Sun 3/298:06 pm
STL
- LAS
Nonstop4h 02m
Frontier
Deal found 2/23![Frontier logo]()
$165
This Kiwi.com deal was found by Cheapflights users on 2/23. 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 3/279:24 pm
PHX
- STL
1 stop10h 25m
Frontier
Mon 3/308:12 pm
STL
- PHX
1 stop19h 49m
Frontier
Deal found 2/23![Frontier logo]()
$176
This Kiwi.com deal was found by Cheapflights users on 2/22. 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 3/276:00 am
LAS
- STL
1 stop25h 49m
Frontier
Sun 4/510:12 pm
STL
- LAS
Nonstop3h 42m
Frontier
Deal found 2/22![Frontier logo]()
$177
This Super.com deal was found by Cheapflights users on 2/23. 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.
Sat 3/286:05 am
LAS
- STL
Nonstop3h 14m
Frontier
Sun 4/510:12 pm
STL
- LAS
Nonstop3h 42m
Frontier
Deal found 2/23![Frontier logo]()
$146
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 February 26, 2026.
Search for one-way flight options from Arizona to St. Louis. Find affordable one-way fares based on user searches. Data last updated February 26, 2026.
This Trip.com deal was found by Cheapflights users on 2/26. 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.
Sat 4/256:50 am
PHX
- STL
1 stop10h 42m
Frontier
Deal found 2/26![Frontier logo]()
$60
This Kiwi.com deal was found by Cheapflights users on 2/24. 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 4/249:24 pm
PHX
- STL
1 stop20h 08m
Frontier
Deal found 2/24![Frontier logo]()
$65
This Kiwi.com deal was found by Cheapflights users on 2/25. 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 4/2412:59 am
LAS
- STL
1 stop16h 33m
Frontier
Deal found 2/25![Frontier logo]()
$66
This Super.com deal was found by Cheapflights users on 2/25. 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 3/256:05 am
LAS
- STL
Nonstop3h 14m
Frontier
Deal found 2/25![Frontier logo]()
$68
This Frontier deal was found by Cheapflights users on 2/24. 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.
Tue 3/246:05 am
LAS
- STL
Nonstop3h 14m
Frontier
Deal found 2/24![Frontier logo]()
$69
This Mytrip deal was found by Cheapflights users on 2/23. 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 4/97:00 am
LAS
- STL
Nonstop3h 19m
Frontier
Deal found 2/23![Frontier logo]()
$70
This Kiwi.com deal was found by Cheapflights users on 2/25. 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 5/149:20 pm
LAS
- STL
1 stop19h 52m
Frontier
Deal found 2/25![Frontier logo]()
$71
This Kiwi.com deal was found by Cheapflights users on 2/22. 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 3/246:50 am
PHX
- STL
1 stop24h 59m
Frontier
Deal found 2/22![Frontier logo]()
$72
This Kiwi.com deal was found by Cheapflights users on 2/22. 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 4/159:20 pm
LAS
- STL
1 stop20h 01m
Frontier
Deal found 2/22![Frontier logo]()
$74
This Kiwi.com deal was found by Cheapflights users on 2/22. 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 3/176:00 am
LAS
- STL
1 stop25h 49m
Frontier
Deal found 2/22![Frontier logo]()
$75
This Kiwi.com deal was found by Cheapflights users on 2/24. 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 4/229:20 pm
LAS
- STL
1 stop20h 01m
Frontier
Deal found 2/24![Frontier logo]()
$76
This Super.com deal was found by Cheapflights users on 2/26. 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.
Sat 3/286:05 am
LAS
- STL
Nonstop3h 14m
Frontier
Deal found 2/26![Frontier logo]()
$78
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 February 26, 2026.
Round-trip from | $130 (Super.com) |
|---|---|
One-way from | $60 (Trip.com) |
Popular in | April |
Cheapest in | January |
Average price | $365 |
Good round-trip deal | $315 or less |
Good one-way deal | $153 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 February 26, 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
Las VegasSt. Louis
LAS - STL
LASSTL
Las Vegas Harry Reid Intl
Tue 3/17
7:00 am-12:15 pm
Nonstop3h 15m
Lambert-St Louis
Fri 3/20
12:14 pm-2:11 pm
Nonstop3h 57m
$147
Las VegasSt. Louis
LAS - STL
LASSTL
Las Vegas Harry Reid Intl
Tue 3/24
6:05 am-11:19 am
Nonstop3h 14m
Lambert-St Louis
Fri 3/27
8:12 pm-11:40 pm
1 stop5h 28m
$194
Las VegasSt. Louis
LAS - STL
LASSTL
Las Vegas Harry Reid Intl
Wed 6/3
12:59 am-10:07 am
1 stop7h 08m
Lambert-St Louis
Sun 6/7
5:10 am-9:07 am
1 stop5h 57m
$233
Las VegasSt. Louis
LAS - STL
LASSTL
Las Vegas Harry Reid Intl
Tue 5/26
12:45 am-8:46 am
1 stop6h 01m
Lambert-St Louis
Sat 5/30
5:36 pm-11:12 pm
1 stop7h 36m
$233
PhoenixSt. Louis
PHX - STL
PHXSTL
Phoenix Sky Harbor Intl
Wed 4/8
5:35 am-10:25 am
Nonstop2h 50m
Lambert-St Louis
Mon 4/13
6:00 pm-7:25 pm
Nonstop3h 25m
$260
PhoenixSt. Louis
PHX - STL
PHXSTL
Phoenix Sky Harbor Intl
Sat 4/18
6:40 am-11:30 am
Nonstop2h 50m
Lambert-St Louis
Sat 4/25
5:20 pm-9:25 pm
1 stop6h 05m
$268
Las VegasSt. Louis
LAS - STL
LASSTL
Las Vegas Harry Reid Intl
Thu 6/25
5:30 pm-12:36 am
1 stop5h 06m
Lambert-St Louis
Mon 7/6
6:59 pm-12:28 am
1 stop7h 29m
$296
PhoenixSt. Louis
PHX - STL
PHXSTL
Phoenix Sky Harbor Intl
Sat 4/11
6:40 am-11:30 am
Nonstop2h 50m
Lambert-St Louis
Sun 4/12
9:55 pm-11:20 pm
Nonstop3h 25m
$307
PhoenixSt. Louis
PHX - STL
PHXSTL
Phoenix Sky Harbor Intl
Mon 4/27
7:40 pm-12:30 am
Nonstop2h 50m
Lambert-St Louis
Fri 5/1
6:05 am-7:30 am
Nonstop3h 25m
$307
Las VegasSt. Louis
LAS - STL
LASSTL
Las Vegas Harry Reid Intl
Fri 6/5
11:30 pm-8:41 am
1 stop7h 11m
Lambert-St Louis
Tue 6/9
5:10 am-2:16 pm
2 stops11h 06m
$318
Showing 1-10 of 56 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, January is the cheapest month in which you can book a flight from Arizona to St. Louis (average of $93). Flying from Arizona to St. Louis in April is currently the most expensive (average of $266). 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 February 26, 2026.
It’s optimal to fly from Arizona to St. Louis in the afternoon. By choosing this option you can save up to 6% on the cost of your flight, compared to a flight in the evening.
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 February 21, 2026.
Travelers seeking maximum savings on their Arizona to St. Louis flight should consider departing on Monday at noon when fares are most often at their lowest. Sunday afternoons flights should be avoided if possible as fares are typically the most expensive at this time.
Weekly flight availability from Arizona to St. Louis
Explore weekly flight availability from Arizona to St. Louis. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated February 26, 2026.
The most flights from USAZ to STL are scheduled on a Thursday (11 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (2 on average).
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
O'Fallon
Swansea
Fairview Heights
Fenton
Maryland Heights
Collinsville
Eureka
Wentzville
Glencoe
Chesterfield
Alton
Farmington
Festus
Browse thousands of different options on Cheapflights for your next trip
Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.
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Complete your trip
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St. Louis flight routes
Top destinations
Alternative routes for Arizona to St. Louis
See prices for flight routes from nearby airports that may be better suited for you.
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 February 26, 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 February 26, 2026.
Arizona to St. Louis flights
Consider these flights traveling from Arizona to St. Louis.
Top 5 airlines flying from Arizona to St. Louis
Discover the top 5 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 February 26, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$101 | Average$217 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$134 | Average$346 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$214 | Average$428 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$256 | Average$415 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$257 | Average$401 | FlexibilityNo cancel fee | On-time63% |