$48+ Cheap flights from St. Louis (STL) to Arizona
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 8/29. Fares are subject to change and may not be available on all flights or dates of travel.
STL — PHX
Aug 2 — Aug 91
Round-trip
1 adult, Economy
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Find cheap flights from St. Louis to Arizona 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
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Cheapest flights from St. Louis to ArizonaExplore the most affordable flight options available from St. Louis to Arizona. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 3, 2026.
Explore the most affordable flight options available from St. Louis to Arizona. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 3, 2026.
This Cheapflightsfares deal was found by Cheapflights users on 7/2. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/97:10 pm
STL
- LAS
Nonstop3h 33m
Frontier
Sat 8/1512:50 pm
LAS
- STL
Nonstop3h 25m
Frontier
Deal found 7/2![Frontier logo]()
$152
This Frontier deal was found by Cheapflights users on 7/2. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/306:45 pm
STL
- LAS
Nonstop3h 35m
Frontier
Wed 9/212:25 pm
LAS
- STL
Nonstop3h 25m
Frontier
Deal found 7/2![Frontier logo]()
$154
This Cheapflightsfares deal was found by Cheapflights users on 7/2. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/77:10 pm
STL
- LAS
Nonstop3h 33m
Frontier
Tue 8/1112:40 pm
LAS
- STL
Nonstop3h 25m
Frontier
Deal found 7/2![Frontier logo]()
$155
This Frontier deal was found by Cheapflights users on 7/2. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/147:10 pm
STL
- LAS
Nonstop3h 33m
Frontier
Tue 8/1812:25 pm
LAS
- STL
Nonstop3h 25m
Frontier
Deal found 7/2![Frontier logo]()
$157
This Kiwi.com deal was found by Cheapflights users on 7/2. 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.
Wed 10/712:46 pm
STL
- LAS
Nonstop3h 43m
Frontier
Sat 10/1010:30 am
LAS
- STL
1 stop6h 45m
Frontier
Deal found 7/2![Frontier logo]()
$167
This Frontier deal was found by Cheapflights users on 6/30. 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.
Tue 8/117:03 pm
STL
- LAS
Nonstop3h 33m
Frontier
Tue 8/1111:50 pm
LAS
- STL
1 stop7h 07m
Frontier
Deal found 6/30![Frontier logo]()
$169
This Kiwi.com deal was found by Cheapflights users on 6/30. 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 8/118:08 pm
STL
- LAS
1 stop16h 52m
Frontier
Sat 8/1512:50 pm
LAS
- STL
Nonstop3h 25m
Frontier
Deal found 6/30![Frontier logo]()
$171
This Cheapflightsfares deal was found by Cheapflights users on 7/1. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/48:08 pm
STL
- LAS
1 stop16h 52m
Frontier
Wed 8/1212:40 pm
LAS
- STL
Nonstop3h 25m
Frontier
Deal found 7/1![Frontier logo]()
$172
This Kiwi.com deal was found by Cheapflights users on 7/1. 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.
Tue 7/217:03 pm
STL
- LAS
Nonstop3h 33m
Frontier
Tue 8/47:00 am
LAS
- STL
2 stops23h 57m
Frontier
Deal found 7/1![Frontier logo]()
$173
This Frontier deal was found by Cheapflights users on 6/29. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/1110:35 am
STL
- LAS
1 stop12h 37m
Frontier
Sat 11/145:18 pm
LAS
- STL
Nonstop3h 21m
Frontier
Deal found 6/29![Frontier logo]()
$174
This Frontier deal was found by Cheapflights users on 6/30. 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 11/115:32 pm
STL
- LAS
Nonstop3h 43m
Frontier
Tue 11/175:18 pm
LAS
- STL
Nonstop3h 21m
Frontier
Deal found 6/30![Frontier logo]()
$175
This Kiwi.com deal was found by Cheapflights users on 6/30. 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.
Sat 8/87:10 pm
STL
- LAS
Nonstop3h 33m
Frontier
Fri 8/1412:59 am
LAS
- STL
1 stop16h 24m
Frontier
Deal found 6/30![Frontier logo]()
$177
Best flights from St. Louis to ArizonaDiscover carefully curated flight deals from St. Louis to Arizona that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated July 3, 2026.
Discover carefully curated flight deals from St. Louis to Arizona that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated July 3, 2026.
This United Airlines deal was found by Cheapflights users on 7/2. 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.
Thu 8/275:10 am
STL
- LAS
1 stop5h 59m
United Airlines
Sun 8/305:20 am
LAS
- STL
1 stop5h 20m
United Airlines
Deal found 7/2![United Airlines logo]()
$217
This Cheapflightsfares deal was found by Cheapflights users on 7/2. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/147:10 pm
STL
- LAS
Nonstop3h 33m
Frontier
Sun 8/1612:50 pm
LAS
- STL
Nonstop3h 25m
Frontier
Deal found 7/2![Frontier logo]()
$260
This Southwest deal was found by Cheapflights users on 6/28. 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 8/1311:50 am
STL
- PHX
Nonstop3h 10m
Southwest
Mon 8/175:00 am
PHX
- STL
Nonstop2h 50m
Southwest
Deal found 6/28![Southwest logo]()
$297
This Delta deal was found by Cheapflights users on 7/2. 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.
Tue 9/15:00 pm
STL
- TUS
1 stop6h 46m
Delta
Sun 9/66:00 am
TUS
- STL
1 stop6h 33m
Delta
Deal found 7/2![Delta logo]()
$347
This Alaska Airlines deal was found by Cheapflights users on 6/29. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/610:16 am
STL
- LAS
2 stops10h 25m
Alaska Airlines
Sun 8/96:50 am
LAS
- STL
2 stops9h 15m
Alaska Airlines
Deal found 6/29![Alaska Airlines logo]()
$409
This American Airlines deal was found by Cheapflights users on 6/28. 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.
Sat 10/175:40 am
STL
- FLG
1 stop8h 25m
American Airlines
Sat 10/2412:45 pm
FLG
- STL
1 stop5h 03m
American Airlines
Deal found 6/28![American Airlines logo]()
$474
This United Airlines deal was found by Cheapflights users on 7/2. 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.
Thu 7/307:23 pm
STL
- LAS
1 stop7h 23m
United Airlines
Sat 8/15:30 am
LAS
- STL
1 stop5h 12m
United Airlines
Deal found 7/2![United Airlines logo]()
$244
This United Airlines deal was found by Cheapflights users on 6/30. 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.
Fri 8/211:36 pm
STL
- LAS
1 stop5h 26m
United Airlines
Sat 8/2212:59 am
LAS
- STL
1 stop7h 11m
United Airlines
Deal found 6/30![United Airlines logo]()
$275
This Southwest deal was found by Cheapflights users on 7/2. 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.
Thu 8/202:20 pm
STL
- PHX
1 stop4h 30m
Southwest
Sat 8/225:25 pm
PHX
- STL
Nonstop2h 55m
Southwest
Deal found 7/2![Southwest logo]()
$303
This Southwest deal was found by Cheapflights users on 6/28. 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 7/231:20 pm
STL
- PHX
Nonstop3h 10m
Southwest
Wed 7/293:45 pm
PHX
- STL
1 stop5h 20m
Southwest
Deal found 6/28![Southwest logo]()
$307
This Southwest deal was found by Cheapflights users on 7/1. 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 9/87:35 am
STL
- PHX
Nonstop3h 15m
Southwest
Mon 9/144:55 pm
PHX
- STL
1 stop5h 40m
Southwest
Deal found 7/1![Southwest logo]()
$307
This United Airlines deal was found by Cheapflights users on 6/28. 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 8/198:00 am
STL
- LAS
2 stops9h 41m
United Airlines
Mon 8/2411:59 pm
LAS
- STL
1 stop9h 18m
United Airlines
Deal found 6/28![United Airlines logo]()
$312
This Delta deal was found by Cheapflights users on 6/28. 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 7/243:58 pm
STL
- TUS
1 stop7h 51m
Delta
Tue 7/281:49 pm
TUS
- STL
1 stop8h 04m
Delta
Deal found 6/28![Delta logo]()
$407
This United Airlines deal was found by Cheapflights users on 6/28. 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 8/228:30 am
STL
- LAS
2 stops11h 27m
United Airlines
Sat 8/2212:59 am
LAS
- STL
1 stop7h 11m
United Airlines
Deal found 6/28![United Airlines logo]()
$312
This Southwest deal was found by Cheapflights users on 7/2. 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.
Wed 9/162:45 pm
STL
- PHX
2 stops6h 10m
Southwest
Sat 9/197:25 am
PHX
- STL
2 stops6h 05m
Southwest
Deal found 7/2![Southwest logo]()
$327
This American Airlines deal was found by Cheapflights users on 6/29. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/297:07 am
STL
- FLG
1 stop6h 50m
American Airlines
Wed 8/512:35 pm
FLG
- STL
1 stop5h 51m
American Airlines
Deal found 6/29![American Airlines logo]()
$474
This Southwest deal was found by Cheapflights users on 7/2. 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.
Thu 8/278:50 pm
STL
- LAS
Nonstop3h 25m
Southwest
Sat 8/2912:55 am
LAS
- STL
1 stop5h 45m
Southwest
Deal found 7/2![Southwest logo]()
$329
This Delta deal was found by Cheapflights users on 6/30. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/43:39 pm
STL
- TUS
1 stop8h 02m
Delta
Mon 9/74:31 pm
TUS
- STL
1 stop6h 10m
Delta
Deal found 6/30![Delta logo]()
$457
This United Airlines deal was found by Cheapflights users on 7/1. 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.
Tue 9/158:00 am
STL
- TUS
2 stops11h 03m
United Airlines
Wed 9/239:15 am
TUS
- STL
1 stop5h 19m
United Airlines
Deal found 7/1![United Airlines logo]()
$352
This United Airlines deal was found by Cheapflights users on 6/29. 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 9/198:00 am
STL
- LAS
2 stops11h 57m
United Airlines
Sat 9/266:09 am
LAS
- STL
1 stop6h 01m
United Airlines
Deal found 6/29![United Airlines logo]()
$352
This American Airlines deal was found by Cheapflights users on 7/1. 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.
Sun 9/277:00 am
STL
- FLG
1 stop6h 53m
American Airlines
Sun 10/412:37 pm
FLG
- STL
1 stop5h 08m
American Airlines
Deal found 7/1![American Airlines logo]()
$550
This Southwest deal was found by Cheapflights users on 7/1. 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 7/149:15 pm
STL
- PHX
Nonstop3h 15m
Southwest
Tue 7/216:35 pm
PHX
- STL
Nonstop3h 00m
Southwest
Deal found 7/1![Southwest logo]()
$391
This American Airlines deal was found by Cheapflights users on 6/28. 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 10/232:31 pm
STL
- FLG
1 stop5h 13m
American Airlines
Mon 10/2612:45 pm
FLG
- STL
1 stop5h 03m
American Airlines
Deal found 6/28![American Airlines logo]()
$550
This United Airlines deal was found by Cheapflights users on 6/29. 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.
Tue 9/18:00 am
STL
- PHX
2 stops11h 10m
United Airlines
Wed 9/26:20 am
PHX
- STL
1 stop7h 18m
United Airlines
Deal found 6/29![United Airlines logo]()
$384
This Southwest deal was found by Cheapflights users on 6/29. 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 8/96:40 pm
STL
- TUS
1 stop6h 35m
Southwest
Sat 8/1510:40 am
TUS
- STL
2 stops7h 05m
Southwest
Deal found 6/29![Southwest logo]()
$399
This American Airlines deal was found by Cheapflights users on 7/1. 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.
Thu 10/226:32 am
STL
- FLG
1 stop7h 33m
American Airlines
Sun 10/2512:45 pm
FLG
- STL
1 stop5h 03m
American Airlines
Deal found 7/1![American Airlines logo]()
$570
This Southwest deal was found by Cheapflights users on 6/29. 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.
Thu 8/68:25 am
STL
- LAS
2 stops7h 15m
Southwest
Mon 8/106:45 am
LAS
- STL
1 stop4h 30m
Southwest
Deal found 6/29![Southwest logo]()
$406
This United Airlines deal was found by Cheapflights users on 7/2. 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.
Thu 8/65:10 am
STL
- PHX
2 stops11h 32m
United Airlines
Mon 8/106:54 pm
PHX
- STL
2 stops11h 45m
United Airlines
Deal found 7/2![United Airlines logo]()
$417
This American Airlines deal was found by Cheapflights users on 6/28. 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 8/255:42 am
STL
- FLG
2 stops14h 07m
American Airlines
Thu 8/2712:35 pm
FLG
- STL
1 stop18h 49m
American Airlines
Deal found 6/28![American Airlines logo]()
$629
This Southwest deal was found by Cheapflights users on 6/28. 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 7/144:25 pm
STL
- TUS
1 stop8h 10m
Southwest
Wed 8/54:00 pm
TUS
- STL
1 stop4h 35m
Southwest
Deal found 6/28![Southwest logo]()
$434
Last-minute flights from St. Louis to ArizonaDiscover last-minute flight deals from St. Louis to Arizona. Data last updated July 3, 2026 and is based on user searches.
Discover last-minute flight deals from St. Louis to Arizona. Data last updated July 3, 2026 and is based on user searches.
This Kiwi.com deal was found by Cheapflights users on 7/1. 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.
Tue 7/217:03 pm
STL
- LAS
Nonstop3h 33m
Frontier
Tue 8/47:00 am
LAS
- STL
2 stops23h 57m
Frontier
Deal found 7/1![Frontier logo]()
$173
This Kiwi.com deal was found by Cheapflights users on 6/30. 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 7/287:03 pm
STL
- LAS
Nonstop3h 33m
Frontier
Tue 8/47:00 am
LAS
- STL
2 stops23h 57m
Frontier
Deal found 6/30![Frontier logo]()
$175
This Cheapflightsfares deal was found by Cheapflights users on 6/30. 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.
Sat 8/17:10 pm
STL
- LAS
Nonstop3h 33m
Frontier
Tue 9/16:00 am
LAS
- STL
1 stop8h 31m
Frontier
Deal found 6/30![Frontier logo]()
$178
This Cheapflightsfares deal was found by Cheapflights users on 7/1. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/44:09 pm
STL
- LAS
1 stop21h 55m
Frontier
Wed 8/1912:25 pm
LAS
- STL
Nonstop3h 25m
Frontier
Deal found 7/1![Frontier logo]()
$172
This Frontier deal was found by Cheapflights users on 6/30. 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.
Tue 8/43:41 pm
STL
- LAS
1 stop10h 06m
Frontier
Wed 8/1212:40 pm
LAS
- STL
Nonstop3h 25m
Frontier
Deal found 6/30![Frontier logo]()
$174
This Cheapflightsfares deal was found by Cheapflights users on 7/2. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/77:10 pm
STL
- LAS
Nonstop3h 33m
Frontier
Tue 8/1112:40 pm
LAS
- STL
Nonstop3h 25m
Frontier
Deal found 7/2![Frontier logo]()
$155
This Kiwi.com deal was found by Cheapflights users on 6/30. 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.
Sat 8/87:10 pm
STL
- LAS
Nonstop3h 33m
Frontier
Fri 8/1412:59 am
LAS
- STL
1 stop16h 24m
Frontier
Deal found 6/30![Frontier logo]()
$177
This Cheapflightsfares deal was found by Cheapflights users on 7/2. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/97:10 pm
STL
- LAS
Nonstop3h 33m
Frontier
Sat 8/1512:50 pm
LAS
- STL
Nonstop3h 25m
Frontier
Deal found 7/2![Frontier logo]()
$152
This Frontier deal was found by Cheapflights users on 6/30. 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.
Tue 8/117:03 pm
STL
- LAS
Nonstop3h 33m
Frontier
Tue 8/1111:50 pm
LAS
- STL
1 stop7h 07m
Frontier
Deal found 6/30![Frontier logo]()
$169
This Kiwi.com deal was found by Cheapflights users on 6/30. 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 8/118:08 pm
STL
- LAS
1 stop16h 52m
Frontier
Sat 8/1512:50 pm
LAS
- STL
Nonstop3h 25m
Frontier
Deal found 6/30![Frontier logo]()
$171
This Frontier deal was found by Cheapflights users on 7/2. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/147:10 pm
STL
- LAS
Nonstop3h 33m
Frontier
Tue 8/1812:25 pm
LAS
- STL
Nonstop3h 25m
Frontier
Deal found 7/2![Frontier logo]()
$157
This Frontier deal was found by Cheapflights users on 7/2. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/306:45 pm
STL
- LAS
Nonstop3h 35m
Frontier
Wed 9/212:25 pm
LAS
- STL
Nonstop3h 25m
Frontier
Deal found 7/2![Frontier logo]()
$154
One-way flights from St. Louis to ArizonaSearch for one-way flight options from St. Louis to Arizona. Find affordable one-way fares based on user searches. Data last updated July 3, 2026.
Search for one-way flight options from St. Louis to Arizona. Find affordable one-way fares based on user searches. Data last updated July 3, 2026.
This Kiwi.com deal was found by Cheapflights users on 7/1. 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 8/296:45 pm
STL
- LAS
Nonstop3h 35m
Frontier
Deal found 7/1![Frontier logo]()
$48
This Frontier deal was found by Cheapflights users on 6/29. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/117:03 pm
STL
- LAS
Nonstop3h 33m
Frontier
Deal found 6/29![Frontier logo]()
$49
This Super.com deal was found by Cheapflights users on 6/30. 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.
Tue 7/287:03 pm
STL
- LAS
Nonstop3h 33m
Frontier
Deal found 6/30![Frontier logo]()
$54
This Cheapflightsfares deal was found by Cheapflights users on 6/27. 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.
Sat 7/257:10 pm
STL
- LAS
Nonstop3h 33m
Frontier
Deal found 6/27![Frontier logo]()
$55
This Super.com deal was found by Cheapflights users on 6/30. 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 7/227:03 pm
STL
- LAS
Nonstop3h 33m
Frontier
Deal found 6/30![Frontier logo]()
$57
This Kiwi.com deal was found by Cheapflights users on 7/1. 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 8/286:45 pm
STL
- LAS
Nonstop3h 35m
Frontier
Deal found 7/1![Frontier logo]()
$62
This Kiwi.com deal was found by Cheapflights users on 7/1. 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 9/2612:46 pm
STL
- PHX
1 stop10h 49m
Frontier
Deal found 7/1![Frontier logo]()
$76
This Kiwi.com deal was found by Cheapflights users on 7/2. 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.
Wed 8/266:45 pm
STL
- PHX
1 stop6h 39m
Frontier
Deal found 7/2![Frontier logo]()
$78
This Kiwi.com deal was found by Cheapflights users on 7/1. 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 8/296:45 pm
STL
- PHX
1 stop6h 39m
Frontier
Deal found 7/1![Frontier logo]()
$79
This Kiwi.com deal was found by Cheapflights users on 6/30. 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 8/256:45 pm
STL
- PHX
1 stop20h 14m
Frontier
Deal found 6/30![Frontier logo]()
$81
This WAYA deal was found by Cheapflights users on 7/2. 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 WAYA is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/127:03 pm
STL
- PHX
1 stop6h 02m
Frontier
Deal found 7/2![Frontier logo]()
$82
This Trip.com deal was found by Cheapflights users on 6/30. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/287:03 pm
STL
- PHX
1 stop19h 56m
Frontier
Deal found 6/30![Frontier logo]()
$83
Find flight deals from St. Louis to Arizona
Keep the following information in mind while searching for St. Louis to Arizona flight deals. Data was last updated July 3, 2026.
Round-trip from | $152 (Cheapflightsfares) |
|---|---|
One-way from | $48 (Kiwi.com) |
Popular in | June |
Cheapest in | November |
Average price | $392 |
Good round-trip deal | $401 or less |
Good one-way deal | $204 or less |
Cheapflights Fare Finder
Customize your flight search to find flights from St. Louis to Arizona 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 July 3, 2026.
Use the filters below to find and compare flights from St. Louis to Arizona that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
St. LouisLas Vegas
STL - LAS
STLLAS
Lambert-St Louis
Thu 8/27
5:10 am-9:09 am
1 stop5h 59m
Las Vegas Harry Reid Intl
Sun 8/30
5:20 am-12:40 pm
1 stop5h 20m
$217
St. LouisLas Vegas
STL - LAS
STLLAS
Lambert-St Louis
Thu 7/30
7:23 pm-12:46 am
1 stop7h 23m
Las Vegas Harry Reid Intl
Sat 8/1
5:30 am-12:42 pm
1 stop5h 12m
$244
St. LouisLas Vegas
STL - LAS
STLLAS
Lambert-St Louis
Fri 8/14
7:10 pm-8:43 pm
Nonstop3h 33m
Las Vegas Harry Reid Intl
Sun 8/16
12:50 pm-6:15 pm
Nonstop3h 25m
$260
St. LouisLas Vegas
STL - LAS
STLLAS
Lambert-St Louis
Fri 8/21
1:36 pm-5:02 pm
1 stop5h 26m
Las Vegas Harry Reid Intl
Sat 8/22
12:59 am-10:10 am
1 stop7h 11m
$275
Quickest round-trip
St. LouisPhoenix
STL - PHX
STLPHX
Lambert-St Louis
Thu 8/13
11:50 am-1:00 pm
Nonstop3h 10m
Phoenix Sky Harbor Intl
Mon 8/17
5:00 am-9:50 am
Nonstop2h 50m
$297
St. LouisPhoenix
STL - PHX
STLPHX
Lambert-St Louis
Thu 8/20
2:20 pm-4:50 pm
1 stop4h 30m
Phoenix Sky Harbor Intl
Sat 8/22
5:25 pm-10:20 pm
Nonstop2h 55m
$303
St. LouisPhoenix
STL - PHX
STLPHX
Lambert-St Louis
Thu 7/23
1:20 pm-2:30 pm
Nonstop3h 10m
Phoenix Sky Harbor Intl
Wed 7/29
3:45 pm-11:05 pm
1 stop5h 20m
$307
St. LouisPhoenix
STL - PHX
STLPHX
Lambert-St Louis
Tue 9/8
7:35 am-8:50 am
Nonstop3h 15m
Phoenix Sky Harbor Intl
Mon 9/14
4:55 pm-12:35 am
1 stop5h 40m
$307
St. LouisLas Vegas
STL - LAS
STLLAS
Lambert-St Louis
Wed 8/19
8:00 am-3:41 pm
2 stops9h 41m
Las Vegas Harry Reid Intl
Mon 8/24
11:59 pm-11:17 am
1 stop9h 18m
$312
St. LouisLas Vegas
STL - LAS
STLLAS
Lambert-St Louis
Sat 8/22
8:30 am-5:57 pm
2 stops11h 27m
Las Vegas Harry Reid Intl
Sat 8/22
12:59 am-10:10 am
1 stop7h 11m
$312
Showing 1-10 of 60 resultsSorted by cheapest first
Best time to book a flight from St. Louis to Arizona
Have a flexible travel schedule? Discover the best time to fly to Arizona from St. Louis with our price prediction graph.
STL-LAS
STL-PHX
STL-TUS
STL-FLG
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 St. Louis to Arizona
STL-USAZ
STL-LAS
STL-PHX
STL-TUS
STL-FLG
What is the cheapest month to book a flight from St. Louis to Arizona?
Currently, December is the cheapest month in which you can book a flight from St. Louis to Arizona (average of $40). Flying from St. Louis to Arizona in June is currently the most expensive (average of $210). 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 STL to AZ?
Find hourly flight availability from St. Louis to Arizona. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated July 3, 2026.
A simple way to save on the total cost of your ticket is to fly from St. Louis to Arizona in the evening. If you’re flexible enough to do this you can expect to save up to 30% on your trip compared to booking a flight in the morning.
Weekly flight availability from St. Louis to Arizona
Explore weekly flight availability from St. Louis to Arizona. 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 July 3, 2026.
The most flights from STL to USAZ are scheduled on a Thursday (8 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (2 on average).
How much does it cost to fly round-trip from St. Louis to Arizona?
How far ahead should I book a flight from St. Louis to Arizona?
The price you pay for your flight from St. Louis to Arizona may vary depending on when you book. For the best chance of a lower fare, look to book 23 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 St. Louis to Arizona?
Use this chart to determine the cheapest time to fly round-trip from St. Louis to Arizona. Price data was last updated on June 27, 2026.
Travelers seeking maximum savings on their St. Louis to Arizona flight should consider departing on Friday evenings when fares are most often at their lowest. Sunday at noon flights should be avoided if possible as fares are typically the most expensive at this time.
Reviews of airlines servicing Arizona
Get insights into the airlines that provide service to Arizona. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Arizona. Reviews last updated July 3, 2026.
Get a feel of what it's like to fly with Southwest,United Airlines, andAmerican Airlines from St. Louis to Arizona by reading reviews from past customers. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Crew
8.6
Entertainment
7.5
Food
7.0
Overall
7.9
Boarding
8.1
Comfort
8.0
Reviews
1 / 20
2.0
MediocreBhoopal,Nov 2024
STL - BOS
Crew
8.6
Entertainment
7.5
Food
7.0
Overall
7.9
Boarding
8.1
Comfort
8.0
Reviews
1 / 20
2.0
MediocreBhoopal,Nov 2024
STL - BOS
Crew
8.6
Entertainment
7.5
Food
7.0
Overall
7.9
Boarding
8.1
Comfort
8.0
Reviews
1 / 20
2.0
MediocreBhoopal,Nov 2024
STL - BOS
Crew
8.6
Entertainment
7.5
Food
7.0
Overall
7.9
Boarding
8.1
Comfort
8.0
Reviews
1 / 20
2.0
MediocreBhoopal,Nov 2024
STL - BOS
Crew
8.6
Entertainment
7.5
Food
7.0
Overall
7.9
Boarding
8.1
Comfort
8.0
Reviews
1 / 20
2.0
MediocreBhoopal,Nov 2024
STL - BOS
Related info for your journey
Find useful and relevant information for your journey from St. Louis to Arizona. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
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Alternative routes for St. Louis to Arizona
See prices for flight routes from nearby airports that may be better suited for you.
Complete your trip
Complete your trip to Arizona by adding a car rental and/or hotel reservation to your travel itinerary.
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Find flights from St. Louis to Arizona, based on your preferred cabin class, be it economy, premium economy, business, or first class.
St. Louis and Arizona flights
Browse other St. Louis and Arizona flight options. Last updated on July 3, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
St. Louis to Arizona flights
Consider these flights traveling from St. Louis to Arizona.
Top 4 airlines flying from St. Louis to Arizona
Discover the top 4 airlines that operate flights from St. Louis to Arizona. 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 July 3, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$94 | Average$210 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$148 | Average$434 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$211 | Average$446 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$219 | Average$417 | FlexibilityNo cancel fee | On-time63% |