$69+ 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 10/28. Fares are subject to change and may not be available on all flights or dates of travel.
STL — PHX
Aug 31 — Sep 71
Round-trip
1 adult, Economy
We work with more than 300 partners to bring you better travel deals
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
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 St. Louis to Arizona
Cheapest
Best
Last-minute
One-way
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 August 1, 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 August 1, 2026.
This Alaska Airlines 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/34:42 pm
STL
- LAS
1 stop9h 17m
Alaska Airlines
Wed 10/712:08 pm
LAS
- STL
1 stop9h 51m
Alaska Airlines
Deal found 7/30![Alaska Airlines logo]()
$137
This Kiwi.com deal was found by Cheapflights users on 7/28. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/138:10 pm
STL
- PHX
1 stop29h 23m
Frontier
Wed 10/218:16 am
PHX
- STL
1 stop8h 59m
Frontier
Deal found 7/28![Frontier logo]()
$152
This Alaska Airlines 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/156:29 am
STL
- LAS
1 stop11h 03m
Alaska Airlines
Fri 9/1811:55 am
LAS
- STL
1 stop10h 04m
Alaska Airlines
Deal found 7/30![Alaska Airlines logo]()
$157
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 9/168:10 pm
STL
- PHX
1 stop13h 50m
Frontier
Wed 9/239:15 am
PHX
- STL
1 stop8h 02m
Frontier
Deal found 7/31![Frontier logo]()
$158
This Kiwi.com deal was found by Cheapflights users on 7/28. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/131:02 pm
STL
- LAS
1 stop23h 44m
Frontier
Wed 9/169:45 am
LAS
- STL
1 stop7h 32m
Frontier
Deal found 7/28![Frontier logo]()
$161
This Kiwi.com deal was found by Cheapflights users on 7/29. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/78:10 pm
STL
- PHX
1 stop20h 25m
Frontier
Tue 10/136:36 pm
PHX
- STL
1 stop22h 39m
Frontier
Deal found 7/29![Frontier logo]()
$163
This Kiwi.com deal was found by Cheapflights users on 7/28. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/58:10 pm
STL
- PHX
1 stop13h 50m
Frontier
Wed 10/79:15 am
PHX
- STL
1 stop8h 02m
Frontier
Deal found 7/28![Frontier logo]()
$165
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 9/85:27 pm
STL
- PHX
1 stop7h 33m
Frontier
Wed 9/99:15 am
PHX
- STL
1 stop8h 02m
Frontier
Deal found 7/31![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.
Wed 9/308:10 pm
STL
- LAS
1 stop14h 18m
Frontier
Sat 10/36:45 am
LAS
- STL
1 stop10h 32m
Frontier
Deal found 7/31![Frontier logo]()
$170
This Trip.com deal was found by Cheapflights users on 7/29. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/266:45 pm
STL
- LAS
Nonstop3h 35m
Multiple Airlines
Wed 9/28:02 am
LAS
- STL
1 stop7h 08m
Multiple Airlines
Deal found 7/29![Multiple Airlines logo]()
$172
This Kiwi.com deal was found by Cheapflights users on 7/29. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/238:10 pm
STL
- PHX
1 stop13h 50m
Frontier
Wed 9/309:15 am
PHX
- STL
1 stop8h 02m
Frontier
Deal found 7/29![Frontier logo]()
$172
This Expedia deal was found by Cheapflights users on 7/29. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/156:29 am
STL
- LAS
1 stop11h 03m
Multiple Airlines
Fri 9/186:10 am
LAS
- STL
Nonstop3h 17m
Multiple Airlines
Deal found 7/29![Multiple Airlines logo]()
$173
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 August 1, 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 August 1, 2026.
This Southwest deal was found by Cheapflights users on 7/31. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/211:45 pm
STL
- PHX
1 stop6h 05m
Southwest
Sat 10/246:45 pm
PHX
- STL
Nonstop2h 50m
Southwest
Deal found 7/31![Southwest logo]()
$287
This Cheapflightsfares deal was found by Cheapflights users on 7/27. 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.
Fri 9/185:19 pm
STL
- LAS
1 stop16h 48m
Frontier
Sat 9/1912:59 am
LAS
- STL
1 stop6h 36m
Frontier
Deal found 7/27![Frontier logo]()
$342
This American Airlines deal was found by Cheapflights users on 7/27. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/186:36 am
STL
- TUS
1 stop7h 41m
American Airlines
Wed 8/193:58 pm
TUS
- STL
1 stop5h 44m
American Airlines
Deal found 7/27![American Airlines logo]()
$355
This Delta deal was found by Cheapflights users on 7/29. 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 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 7/29![Delta logo]()
$356
This Alaska Airlines deal was found by Cheapflights users on 7/29. 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.
Sat 10/36:02 am
STL
- PHX
1 stop11h 08m
Alaska Airlines
Wed 10/77:38 am
PHX
- STL
2 stops14h 21m
Alaska Airlines
Deal found 7/29![Alaska Airlines logo]()
$366
This United 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/2910:27 am
STL
- TUS
2 stops8h 19m
United Airlines
Sat 10/36:06 am
TUS
- STL
1 stop6h 04m
United Airlines
Deal found 8/1![United Airlines logo]()
$390
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 10/134:55 pm
STL
- PHX
Nonstop3h 20m
Southwest
Wed 10/1412:05 am
PHX
- STL
1 stop5h 40m
Southwest
Deal found 7/31![Southwest logo]()
$297
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.
Tue 9/86:15 am
STL
- PHX
1 stop6h 10m
Delta
Sun 9/135:15 pm
PHX
- STL
1 stop5h 29m
Delta
Deal found 7/31![Delta logo]()
$357
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 8/278:45 pm
STL
- PHX
Nonstop3h 10m
Southwest
Thu 9/35:00 am
PHX
- STL
Nonstop2h 50m
Southwest
Deal found 7/30![Southwest logo]()
$353
This Alaska Airlines deal was found by Cheapflights users on 7/29. 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 9/173:19 pm
STL
- LAS
1 stop8h 22m
Alaska Airlines
Mon 9/217:07 pm
LAS
- STL
2 stops20h 03m
Alaska Airlines
Deal found 7/29![Alaska Airlines logo]()
$396
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.
Thu 9/36:20 am
STL
- PHX
1 stop8h 17m
Delta
Sun 9/135:15 pm
PHX
- STL
1 stop5h 29m
Delta
Deal found 7/31![Delta logo]()
$367
This United Airlines deal was found by Cheapflights users on 7/28. 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.
Fri 8/218:00 am
STL
- LAS
2 stops9h 16m
United Airlines
Sat 8/2212:59 am
LAS
- STL
1 stop7h 11m
United Airlines
Deal found 7/28![United Airlines logo]()
$404
This Southwest deal was found by Cheapflights users on 7/28. 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 8/272:20 pm
STL
- TUS
2 stops9h 20m
Southwest
Thu 9/33:45 pm
TUS
- STL
1 stop7h 05m
Southwest
Deal found 7/28![Southwest logo]()
$360
This United Airlines deal was found by Cheapflights users on 7/27. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/221:05 pm
STL
- LAS
1 stop7h 34m
United Airlines
Sun 8/236:00 am
LAS
- STL
2 stops12h 46m
United Airlines
Deal found 7/27![United Airlines logo]()
$404
This Delta 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/282:25 pm
STL
- LAS
2 stops10h 16m
Delta
Fri 10/26:05 am
LAS
- STL
2 stops9h 32m
Delta
Deal found 7/30![Delta logo]()
$371
This Alaska Airlines 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/187:00 am
STL
- PHX
2 stops17h 26m
Alaska Airlines
Sat 11/214:48 pm
PHX
- STL
1 stop20h 29m
Alaska Airlines
Deal found 7/30![Alaska Airlines logo]()
$411
This Southwest deal was found by Cheapflights users on 7/28. 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 10/208:35 am
STL
- TUS
2 stops6h 50m
Southwest
Sat 10/245:00 pm
TUS
- STL
1 stop4h 35m
Southwest
Deal found 7/28![Southwest logo]()
$360
This American Airlines deal was found by Cheapflights users on 7/27. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/267:00 am
STL
- FLG
1 stop6h 53m
American Airlines
Wed 9/3011:43 am
FLG
- STL
1 stop7h 09m
American Airlines
Deal found 7/27![American Airlines logo]()
$484
This Alaska 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/176:02 am
STL
- PHX
2 stops14h 40m
Alaska Airlines
Mon 10/197:38 am
PHX
- STL
2 stops14h 21m
Alaska Airlines
Deal found 7/31![Alaska Airlines logo]()
$415
This United Airlines deal was found by Cheapflights users on 7/27. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/21:36 pm
STL
- TUS
1 stop5h 27m
United Airlines
Mon 9/75:30 am
TUS
- STL
1 stop5h 10m
United Airlines
Deal found 7/27![United Airlines logo]()
$419
This Delta deal was found by Cheapflights users on 7/28. 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.
Thu 10/152:22 pm
STL
- LAS
2 stops10h 18m
Delta
Fri 10/1612:59 am
LAS
- STL
1 stop7h 39m
Delta
Deal found 7/28![Delta logo]()
$393
This American Airlines deal was found by Cheapflights users on 7/29. 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.
Sat 9/125:43 am
STL
- FLG
1 stop8h 10m
American Airlines
Sat 9/199:50 am
FLG
- STL
1 stop7h 17m
American Airlines
Deal found 7/29![American Airlines logo]()
$484
This Southwest deal was found by Cheapflights users on 7/29. 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 10/299:50 pm
STL
- PHX
Nonstop3h 20m
Southwest
Fri 10/308:00 am
PHX
- STL
1 stop4h 45m
Southwest
Deal found 7/29![Southwest logo]()
$364
This Alaska 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/306:29 am
STL
- LAS
2 stops12h 19m
Alaska Airlines
Sun 10/47:00 am
LAS
- STL
2 stops14h 59m
Alaska Airlines
Deal found 7/31![Alaska Airlines logo]()
$453
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.
Sat 1/96:00 am
STL
- FLG
1 stop7h 48m
American Airlines
Wed 1/131:30 pm
FLG
- STL
1 stop4h 59m
American Airlines
Deal found 7/31![American Airlines logo]()
$518
This Delta deal was found by Cheapflights users on 7/29. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/298:00 am
STL
- LAS
2 stops12h 29m
Delta
Sat 9/511:00 am
LAS
- STL
2 stops9h 03m
Delta
Deal found 7/29![Delta logo]()
$429
This Southwest deal was found by Cheapflights users on 7/28. 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 9/18:45 pm
STL
- PHX
Nonstop3h 10m
Southwest
Fri 9/46:55 pm
PHX
- STL
Nonstop3h 00m
Southwest
Deal found 7/28![Southwest logo]()
$395
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.
Wed 10/76:30 am
STL
- TUS
2 stops8h 55m
Southwest
Fri 10/93:00 pm
TUS
- STL
2 stops7h 35m
Southwest
Deal found 7/30![Southwest logo]()
$403
This Delta 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/232:22 pm
STL
- LAS
2 stops10h 18m
Delta
Sun 10/2512:59 am
LAS
- STL
1 stop5h 54m
Delta
Deal found 8/1![Delta logo]()
$456
This American Airlines deal was found by Cheapflights users on 7/28. 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.
Thu 10/812:46 pm
STL
- FLG
1 stop8h 43m
American Airlines
Sun 10/1111:52 am
FLG
- STL
1 stop6h 51m
American Airlines
Deal found 7/28![American Airlines logo]()
$591
Last-minute flights from St. Louis to ArizonaDiscover last-minute flight deals from St. Louis to Arizona. Data last updated August 1, 2026 and is based on user searches.
Discover last-minute flight deals from St. Louis to Arizona. Data last updated August 1, 2026 and is based on user searches.
This Frontier deal was found by Cheapflights users on 7/28. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/83:41 pm
STL
- PHX
1 stop9h 18m
Frontier
Wed 8/1211:17 am
PHX
- STL
1 stop6h 06m
Frontier
Deal found 7/28![Frontier logo]()
$342
This Super.com deal was found by Cheapflights users on 7/28. 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/118:08 pm
STL
- PHX
1 stop5h 19m
Frontier
Tue 8/1810:09 pm
PHX
- STL
1 stop17h 41m
Frontier
Deal found 7/28![Frontier logo]()
$307
This Kiwi.com deal was found by Cheapflights users on 7/28. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/188:00 am
STL
- LAS
Nonstop3h 33m
Frontier
Wed 8/269:04 pm
LAS
- STL
1 stop20h 09m
Frontier
Deal found 7/28![Frontier logo]()
$199
This Kiwi.com deal was found by Cheapflights users on 7/29. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/237:58 pm
STL
- LAS
1 stop13h 11m
Frontier
Wed 8/269:04 pm
LAS
- STL
1 stop20h 09m
Frontier
Deal found 7/29![Frontier logo]()
$196
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.
Sun 8/237:58 pm
STL
- LAS
1 stop13h 11m
Frontier
Sat 8/297:36 am
LAS
- STL
2 stops31h 46m
Frontier
Deal found 7/30![Frontier logo]()
$200
This Kiwi.com deal was found by Cheapflights users on 7/28. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/247:58 pm
STL
- LAS
1 stop5h 49m
Frontier
Thu 8/276:00 am
LAS
- STL
1 stop11h 13m
Frontier
Deal found 7/28![Frontier logo]()
$193
This Kiwi.com deal was found by Cheapflights users on 7/27. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/247:58 pm
STL
- LAS
1 stop17h 02m
Frontier
Mon 8/316:00 am
LAS
- STL
1 stop11h 13m
Frontier
Deal found 7/27![Frontier logo]()
$194
This Trip.com deal was found by Cheapflights users on 7/29. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/266:45 pm
STL
- LAS
Nonstop3h 35m
Multiple Airlines
Wed 9/28:02 am
LAS
- STL
1 stop7h 08m
Multiple Airlines
Deal found 7/29![Multiple Airlines logo]()
$172
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.
Fri 8/286:45 pm
STL
- LAS
Nonstop3h 35m
Multiple Airlines
Mon 8/3110:30 am
LAS
- STL
1 stop11h 29m
Multiple Airlines
Deal found 7/30![Multiple Airlines logo]()
$198
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.
Sat 8/298:36 am
STL
- LAS
1 stop6h 18m
American Airlines
Sat 9/58:00 am
LAS
- STL
1 stop8h 05m
American Airlines
Deal found 8/1![American Airlines logo]()
$187
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.
Sat 8/296:45 pm
STL
- LAS
Nonstop3h 35m
Multiple Airlines
Sat 9/58:02 am
LAS
- STL
1 stop7h 08m
Multiple Airlines
Deal found 7/30![Multiple Airlines logo]()
$188
This Alaska Airlines deal was found by Cheapflights users on 7/29. 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.
Sun 8/307:36 pm
STL
- LAS
1 stop17h 11m
Alaska Airlines
Wed 9/28:02 am
LAS
- STL
1 stop7h 08m
Alaska Airlines
Deal found 7/29![Alaska Airlines logo]()
$157
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 August 1, 2026.
Search for one-way flight options from St. Louis to Arizona. Find affordable one-way fares based on user searches. Data last updated August 1, 2026.
This Alaska Airlines deal was found by Cheapflights users on 7/29. 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.
Wed 10/287:02 am
STL
- LAS
1 stop9h 58m
Alaska Airlines
Deal found 7/29![Alaska Airlines logo]()
$69
This Kiwi.com deal was found by Cheapflights users on 7/29. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/168:10 pm
STL
- LAS
1 stop14h 18m
Frontier
Deal found 7/29![Frontier logo]()
$81
This Kiwi.com deal was found by Cheapflights users on 7/29. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/268:10 pm
STL
- LAS
1 stop29h 21m
Frontier
Deal found 7/29![Frontier logo]()
$83
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.
Mon 9/288:10 pm
STL
- LAS
1 stop19h 57m
Frontier
Deal found 7/31![Frontier logo]()
$84
This Alaska Airlines deal was found by Cheapflights users on 7/29. 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.
Mon 8/316:35 am
STL
- LAS
1 stop10h 53m
Alaska Airlines
Deal found 7/29![Alaska Airlines logo]()
$89
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.
Wed 9/308:10 pm
STL
- PHX
1 stop13h 50m
Frontier
Deal found 7/30![Frontier logo]()
$89
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 10/28:10 pm
STL
- LAS
1 stop19h 57m
Frontier
Deal found 8/1![Frontier logo]()
$91
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.
Sun 9/131:02 pm
STL
- PHX
1 stop8h 49m
Frontier
Deal found 7/30![Frontier logo]()
$92
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.
Wed 9/306:55 pm
STL
- LAS
1 stop6h 40m
Delta
Deal found 7/31![Delta logo]()
$94
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 9/288:10 pm
STL
- PHX
1 stop13h 50m
Frontier
Deal found 7/30![Frontier logo]()
$94
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 9/308:10 pm
STL
- LAS
2 stops29h 18m
Frontier
Deal found 7/31![Frontier logo]()
$95
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.
Sun 9/208:10 pm
STL
- PHX
1 stop13h 50m
Frontier
Deal found 7/30![Frontier logo]()
$95
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 August 1, 2026.
Round-trip from | $137 (Alaska Airlines) |
|---|---|
One-way from | $69 (Alaska Airlines) |
Popular in | June |
Cheapest in | November |
Average price | $392 |
Good round-trip deal | $376 or less |
Good one-way deal | $237 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 August 1, 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. LouisPhoenix
STL - PHX
STLPHX
Lambert-St Louis
Wed 10/21
1:45 pm-5:50 pm
1 stop6h 05m
Phoenix Sky Harbor Intl
Sat 10/24
6:45 pm-11:35 pm
Nonstop2h 50m
$287
St. LouisPhoenix
STL - PHX
STLPHX
Lambert-St Louis
Tue 10/13
4:55 pm-6:15 pm
Nonstop3h 20m
Phoenix Sky Harbor Intl
Wed 10/14
12:05 am-7:45 am
1 stop5h 40m
$297
St. LouisLas Vegas
STL - LAS
STLLAS
Lambert-St Louis
Fri 9/18
5:19 pm-8:07 am
1 stop16h 48m
Las Vegas Harry Reid Intl
Sat 9/19
12:59 am-9:35 am
1 stop6h 36m
$342
Quickest round-trip
St. LouisPhoenix
STL - PHX
STLPHX
Lambert-St Louis
Thu 8/27
8:45 pm-9:55 pm
Nonstop3h 10m
Phoenix Sky Harbor Intl
Thu 9/3
5:00 am-9:50 am
Nonstop2h 50m
$353
St. LouisTucson
STL - TUS
STLTUS
Lambert-St Louis
Tue 8/18
6:36 am-12:17 pm
1 stop7h 41m
Tucson
Wed 8/19
3:58 pm-11:42 pm
1 stop5h 44m
$355
St. LouisTucson
STL - TUS
STLTUS
Lambert-St Louis
Tue 9/1
5:00 pm-9:46 pm
1 stop6h 46m
Tucson
Sun 9/6
6:00 am-2:33 pm
1 stop6h 33m
$356
St. LouisPhoenix
STL - PHX
STLPHX
Lambert-St Louis
Tue 9/8
6:15 am-10:25 am
1 stop6h 10m
Phoenix Sky Harbor Intl
Sun 9/13
5:15 pm-12:44 am
1 stop5h 29m
$357
St. LouisTucson
STL - TUS
STLTUS
Lambert-St Louis
Thu 8/27
2:20 pm-9:40 pm
2 stops9h 20m
Tucson
Thu 9/3
3:45 pm-12:50 am
1 stop7h 05m
$360
St. LouisTucson
STL - TUS
STLTUS
Lambert-St Louis
Tue 10/20
8:35 am-1:25 pm
2 stops6h 50m
Tucson
Sat 10/24
5:00 pm-11:35 pm
1 stop4h 35m
$360
St. LouisPhoenix
STL - PHX
STLPHX
Lambert-St Louis
Thu 10/29
9:50 pm-11:10 pm
Nonstop3h 20m
Phoenix Sky Harbor Intl
Fri 10/30
8:00 am-2:45 pm
1 stop4h 45m
$364
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, November is the cheapest month in which you can book a flight from St. Louis to Arizona (average of $318). Flying from St. Louis to Arizona in June is currently the most expensive (average of $441). 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 August 1, 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 August 1, 2026.
The most flights from STL to USAZ are scheduled on a Monday (9 on average). You will have fewer flight options on Wednesday, 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?
Airfare is below average for this route at the moment.
St. Louis to Arizona flights typically cost between $342 and $397 in October.The cheapest round-trip price found within the last 5 days was $152 on Frontier (Oct 13-Oct 21).
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 July 25, 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 afternoons 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 August 1, 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.
Entertainment
7.5
Food
7.0
Comfort
8.0
Boarding
8.1
Overall
8.0
Crew
8.6
Reviews
1 / 20
2.0
MediocreBhoopal,Nov 2024
STL - BOS
Entertainment
7.5
Food
7.0
Comfort
8.0
Boarding
8.1
Overall
8.0
Crew
8.6
Reviews
1 / 20
2.0
MediocreBhoopal,Nov 2024
STL - BOS
Entertainment
7.5
Food
7.0
Comfort
8.0
Boarding
8.1
Overall
8.0
Crew
8.6
Reviews
1 / 20
2.0
MediocreBhoopal,Nov 2024
STL - BOS
Entertainment
7.5
Food
7.0
Comfort
8.0
Boarding
8.1
Overall
8.0
Crew
8.6
Reviews
1 / 20
2.0
MediocreBhoopal,Nov 2024
STL - BOS
Entertainment
7.5
Food
7.0
Comfort
8.0
Boarding
8.1
Overall
8.0
Crew
8.6
Reviews
1 / 20
2.0
MediocreBhoopal,Nov 2024
STL - BOS
Entertainment
7.5
Food
7.0
Comfort
8.0
Boarding
8.1
Overall
8.0
Crew
8.6
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.
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.
Alternative routes
Complete your trip
Flights by cabin class
Other flight options
Popular flights
Top destinations
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.
Search flights from St. Louis to Arizona by cabin class
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 August 1, 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 5 airlines flying from St. Louis to Arizona
Discover the top 5 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 August 1, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$94 | Average$211 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$148 | Average$434 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$214 | Average$467 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$233 | Average$420 | FlexibilityNo cancel fee | On-time63% | |
| Cheapest$292 | Average$380 | FlexibilityNo cancel fee | On-time62% |