$58+ 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 4/11. Fares are subject to change and may not be available on all flights or dates of travel.
STL — PHX
Mar 25 — Apr 11
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 February 23, 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 February 23, 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.
Thu 3/198:06 pm
STL
- LAS
Nonstop4h 02m
Frontier
Tue 3/246:05 am
LAS
- STL
Nonstop3h 14m
Frontier
Deal found 2/22![Frontier logo]()
$144
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 3/2412:14 pm
STL
- LAS
Nonstop3h 57m
Frontier
Sat 3/286:05 am
LAS
- STL
Nonstop3h 14m
Frontier
Deal found 2/22![Frontier logo]()
$145
This Cheapflightsfares deal was found by Cheapflights users on 2/20. Clicking the “Pick Dates” 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.
Mon 3/2312:14 pm
STL
- LAS
Nonstop3h 57m
Frontier
Sat 3/286:05 am
LAS
- STL
Nonstop3h 14m
Frontier
Deal found 2/20![Frontier logo]()
$147
This deal was found by Cheapflights users on 2/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/3012:14 pm
STL
- LAS
Nonstop3h 57m
Frontier
Sun 4/53:52 pm
LAS
- STL
Nonstop3h 25m
Frontier
Deal found 2/21![Frontier logo]()
$148
This Kiwi.com deal was found by Cheapflights users on 2/20. Clicking the “Pick Dates” 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 3/228:06 pm
STL
- LAS
Nonstop4h 02m
Frontier
Tue 3/246:00 am
LAS
- STL
1 stop25h 49m
Frontier
Deal found 2/20![Frontier logo]()
$149
This Kiwi.com deal was found by Cheapflights users on 2/20. Clicking the “Pick Dates” 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 4/138:19 pm
STL
- LAS
1 stop18h 52m
Frontier
Thu 4/163:35 pm
LAS
- STL
Nonstop3h 25m
Frontier
Deal found 2/20![Frontier logo]()
$150
This Trip.com deal was found by Cheapflights users on 2/20. Clicking the “Pick Dates” 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.
Fri 3/2012:14 pm
STL
- LAS
Nonstop3h 57m
Frontier
Fri 3/276:05 am
LAS
- STL
Nonstop3h 14m
Frontier
Deal found 2/20![Frontier logo]()
$151
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.
Sun 3/2910:49 pm
STL
- PHX
Nonstop3h 41m
Frontier
Tue 3/316:45 pm
PHX
- STL
1 stop13h 03m
Frontier
Deal found 2/22![Frontier logo]()
$152
This Kiwi.com deal was found by Cheapflights users on 2/20. Clicking the “Pick Dates” 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 5/48:17 pm
STL
- LAS
1 stop21h 18m
Frontier
Thu 5/712:59 am
LAS
- STL
1 stop16h 13m
Frontier
Deal found 2/20![Frontier logo]()
$153
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.
Mon 5/118:12 pm
STL
- PHX
1 stop23h 31m
Frontier
Sun 5/179:24 pm
PHX
- STL
1 stop19h 48m
Frontier
Deal found 2/22![Frontier logo]()
$153
This Super.com deal was found by Cheapflights users on 2/20. Clicking the “Pick Dates” 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 4/210:12 pm
STL
- LAS
Nonstop3h 42m
Frontier
Sun 4/53:52 pm
LAS
- STL
Nonstop3h 25m
Frontier
Deal found 2/20![Frontier logo]()
$154
This Kiwi.com deal was found by Cheapflights users on 2/21. Clicking the “Pick Dates” 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 3/235:46 pm
STL
- PHX
Nonstop3h 41m
Frontier
Tue 3/316:45 pm
PHX
- STL
1 stop13h 03m
Frontier
Deal found 2/21![Frontier logo]()
$155
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 February 23, 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 February 23, 2026.
This Delta deal was found by Cheapflights users on 2/19. Clicking the “Pick Dates” 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 4/245:35 pm
STL
- LAS
1 stop7h 38m
Delta
Tue 4/286:20 am
LAS
- STL
1 stop6h 09m
Delta
Deal found 2/19![Delta logo]()
$233
This Kiwi.com deal was found by Cheapflights users on 2/19. Clicking the “Pick Dates” 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 4/203:21 pm
STL
- PHX
2 stops10h 26m
Frontier
Thu 4/239:00 am
PHX
- STL
1 stop10h 00m
Frontier
Deal found 2/19![Frontier logo]()
$234
This Southwest deal was found by Cheapflights users on 2/19. Clicking the “Pick Dates” 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 3/289:35 pm
STL
- PHX
Nonstop3h 25m
Southwest
Wed 4/18:40 am
PHX
- STL
Nonstop2h 55m
Southwest
Deal found 2/19![Southwest logo]()
$315
This United Airlines deal was found by Cheapflights users on 2/20. Clicking the “Pick Dates” 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 5/205:59 pm
STL
- LAS
1 stop6h 06m
United Airlines
Wed 6/32:15 pm
LAS
- STL
2 stops7h 42m
United Airlines
Deal found 2/20![United Airlines logo]()
$318
This American Airlines deal was found by Cheapflights users on 2/21. Clicking the “Pick Dates” 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 5/122:37 pm
STL
- FLG
1 stop6h 07m
American Airlines
Sat 5/165:01 pm
FLG
- STL
1 stop5h 11m
American Airlines
Deal found 2/21![American Airlines logo]()
$406
This Delta deal was found by Cheapflights users on 2/19. Clicking the “Pick Dates” 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 5/65:35 pm
STL
- LAS
1 stop7h 39m
Delta
Sat 5/912:45 am
LAS
- STL
1 stop7h 42m
Delta
Deal found 2/19![Delta logo]()
$233
This Delta deal was found by Cheapflights users on 2/19. Clicking the “Pick Dates” 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 5/117:59 pm
STL
- LAS
1 stop5h 44m
Delta
Thu 5/2112:45 am
LAS
- STL
1 stop7h 42m
Delta
Deal found 2/19![Delta logo]()
$233
This United Airlines deal was found by Cheapflights users on 2/19. Clicking the “Pick Dates” 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 4/19:10 am
STL
- LAS
2 stops10h 13m
United Airlines
Mon 4/611:22 pm
LAS
- STL
1 stop7h 03m
United Airlines
Deal found 2/19![United Airlines logo]()
$318
This Delta deal was found by Cheapflights users on 2/20. Clicking the “Pick Dates” 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 4/222:20 pm
STL
- LAS
2 stops10h 21m
Delta
Sat 4/259:23 am
LAS
- STL
1 stop5h 27m
Delta
Deal found 2/20![Delta logo]()
$263
This Southwest deal was found by Cheapflights users on 2/21. Clicking the “Pick Dates” 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 3/215:15 am
STL
- PHX
1 stop6h 05m
Southwest
Tue 3/245:55 am
PHX
- STL
Nonstop2h 45m
Southwest
Deal found 2/21![Southwest logo]()
$329
This Southwest deal was found by Cheapflights users on 2/20. Clicking the “Pick Dates” 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 4/66:40 pm
STL
- TUS
1 stop5h 30m
Southwest
Mon 4/133:55 pm
TUS
- STL
1 stop5h 55m
Southwest
Deal found 2/20![Southwest logo]()
$341
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 3/317:03 am
STL
- TUS
1 stop9h 11m
Delta
Sat 4/43:28 pm
TUS
- STL
1 stop6h 30m
Delta
Deal found 2/22![Delta logo]()
$303
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.
Wed 4/152:05 pm
STL
- PHX
Nonstop3h 25m
Southwest
Sun 4/1911:55 pm
PHX
- STL
1 stop6h 00m
Southwest
Deal found 2/22![Southwest logo]()
$345
This United Airlines deal was found by Cheapflights users on 2/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 5/244:48 pm
STL
- LAS
1 stop5h 20m
United Airlines
Tue 5/2610:45 am
LAS
- STL
2 stops11h 12m
United Airlines
Deal found 2/20![United Airlines logo]()
$381
This American Airlines deal was found by Cheapflights users on 2/20. Clicking the “Pick Dates” 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.
Mon 5/45:20 am
STL
- FLG
1 stop8h 31m
American Airlines
Thu 5/71:30 pm
FLG
- STL
1 stop7h 29m
American Airlines
Deal found 2/20![American Airlines logo]()
$434
This Delta deal was found by Cheapflights users on 2/19. Clicking the “Pick Dates” 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 5/25:00 pm
STL
- TUS
1 stop6h 31m
Delta
Mon 5/41:30 pm
TUS
- STL
2 stops22h 59m
Delta
Deal found 2/19![Delta logo]()
$308
This Southwest deal was found by Cheapflights users on 2/19. Clicking the “Pick Dates” 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 5/24:45 pm
STL
- PHX
Nonstop3h 20m
Southwest
Fri 5/83:55 pm
PHX
- STL
1 stop5h 20m
Southwest
Deal found 2/19![Southwest logo]()
$345
This United Airlines deal was found by Cheapflights users on 2/19. Clicking the “Pick Dates” 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 3/56:51 am
STL
- LAS
1 stop7h 32m
United Airlines
Fri 3/612:36 am
LAS
- STL
1 stop6h 45m
United Airlines
Deal found 2/19![United Airlines logo]()
$395
This Delta deal was found by Cheapflights users on 2/19. Clicking the “Pick Dates” 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 5/16:45 pm
STL
- TUS
2 stops19h 44m
Delta
Mon 5/41:30 pm
TUS
- STL
2 stops22h 59m
Delta
Deal found 2/19![Delta logo]()
$319
This Southwest deal was found by Cheapflights users on 2/19. Clicking the “Pick Dates” 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 5/193:55 pm
STL
- TUS
1 stop7h 20m
Southwest
Tue 5/262:15 pm
TUS
- STL
1 stop6h 55m
Southwest
Deal found 2/19![Southwest logo]()
$355
This American 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/45:12 am
STL
- YUM
2 stops7h 48m
American Airlines
Wed 4/811:55 am
YUM
- STL
2 stops9h 51m
American Airlines
Deal found 2/22![American Airlines logo]()
$475
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.
Wed 4/15:21 pm
STL
- TUS
1 stop6h 20m
Delta
Mon 4/65:04 pm
TUS
- STL
1 stop5h 17m
Delta
Deal found 2/22![Delta logo]()
$322
This Southwest deal was found by Cheapflights users on 2/21. Clicking the “Pick Dates” 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 5/248:30 pm
STL
- PHX
Nonstop3h 25m
Southwest
Thu 5/284:10 pm
PHX
- STL
Nonstop2h 55m
Southwest
Deal found 2/21![Southwest logo]()
$355
This American Airlines deal was found by Cheapflights users on 2/19. Clicking the “Pick Dates” 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 6/47:06 am
STL
- FLG
1 stop6h 49m
American Airlines
Mon 6/812:35 pm
FLG
- STL
1 stop7h 02m
American Airlines
Deal found 2/19![American Airlines logo]()
$486
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.
Thu 4/25:15 am
STL
- PHX
Nonstop3h 35m
Southwest
Mon 4/68:05 pm
PHX
- STL
Nonstop2h 45m
Southwest
Deal found 2/22![Southwest logo]()
$355
This Delta deal was found by Cheapflights users on 2/19. Clicking the “Pick Dates” 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 5/192:27 pm
STL
- TUS
1 stop9h 03m
Delta
Tue 5/261:27 pm
TUS
- STL
1 stop8h 32m
Delta
Deal found 2/19![Delta logo]()
$325
This American Airlines deal was found by Cheapflights users on 2/20. Clicking the “Pick Dates” 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 4/172:37 pm
STL
- FLG
1 stop6h 05m
American Airlines
Mon 4/207:52 pm
FLG
- STL
2 stops11h 02m
American Airlines
Deal found 2/20![American Airlines logo]()
$496
This Southwest deal was found by Cheapflights users on 2/19. Clicking the “Pick Dates” 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 4/209:40 pm
STL
- PHX
Nonstop3h 25m
Southwest
Thu 4/238:10 am
PHX
- STL
Nonstop3h 05m
Southwest
Deal found 2/19![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.
Fri 3/276:12 pm
STL
- LAS
1 stop7h 43m
Delta
Tue 3/316:00 am
LAS
- STL
2 stops9h 07m
Delta
Deal found 2/22![Delta logo]()
$334
This American 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 5/102:37 pm
STL
- FLG
1 stop6h 05m
American Airlines
Sat 5/167:52 pm
FLG
- STL
2 stops10h 35m
American Airlines
Deal found 2/22![American Airlines logo]()
$496
Last-minute flights from St. Louis to ArizonaDiscover last-minute flight deals from St. Louis to Arizona. Data last updated February 23, 2026 and is based on user searches.
Discover last-minute flight deals from St. Louis to Arizona. Data last updated February 23, 2026 and is based on user searches.
This Kiwi.com deal was found by Cheapflights users on 2/19. Clicking the “Pick Dates” 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 3/168:12 pm
STL
- LAS
1 stop29h 28m
Frontier
Tue 3/246:05 am
LAS
- STL
Nonstop3h 14m
Frontier
Deal found 2/19![Frontier logo]()
$158
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.
Thu 3/198:06 pm
STL
- LAS
Nonstop4h 02m
Frontier
Tue 3/246:05 am
LAS
- STL
Nonstop3h 14m
Frontier
Deal found 2/22![Frontier logo]()
$144
This Trip.com deal was found by Cheapflights users on 2/20. Clicking the “Pick Dates” 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.
Fri 3/2012:14 pm
STL
- LAS
Nonstop3h 57m
Frontier
Fri 3/276:05 am
LAS
- STL
Nonstop3h 14m
Frontier
Deal found 2/20![Frontier logo]()
$151
This Super.com deal was found by Cheapflights users on 2/19. Clicking the “Pick Dates” 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 3/2012:14 pm
STL
- LAS
Nonstop3h 57m
Frontier
Sat 3/286:05 am
LAS
- STL
Nonstop3h 14m
Frontier
Deal found 2/19![Frontier logo]()
$154
This Kiwi.com deal was found by Cheapflights users on 2/20. Clicking the “Pick Dates” 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 3/228:06 pm
STL
- LAS
Nonstop4h 02m
Frontier
Tue 3/246:00 am
LAS
- STL
1 stop25h 49m
Frontier
Deal found 2/20![Frontier logo]()
$149
This Cheapflightsfares deal was found by Cheapflights users on 2/20. Clicking the “Pick Dates” 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.
Mon 3/2312:14 pm
STL
- LAS
Nonstop3h 57m
Frontier
Sat 3/286:05 am
LAS
- STL
Nonstop3h 14m
Frontier
Deal found 2/20![Frontier logo]()
$147
This Kiwi.com deal was found by Cheapflights users on 2/20. Clicking the “Pick Dates” 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 3/2312:14 pm
STL
- LAS
Nonstop3h 57m
Frontier
Tue 3/2412:59 am
LAS
- STL
1 stop6h 50m
Frontier
Deal found 2/20![Frontier logo]()
$150
This Kiwi.com deal was found by Cheapflights users on 2/21. Clicking the “Pick Dates” 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 3/235:46 pm
STL
- PHX
Nonstop3h 41m
Frontier
Tue 3/316:45 pm
PHX
- STL
1 stop13h 03m
Frontier
Deal found 2/21![Frontier logo]()
$155
This Kiwi.com deal was found by Cheapflights users on 2/20. Clicking the “Pick Dates” 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 3/238:12 pm
STL
- LAS
1 stop26h 03m
Frontier
Fri 3/276:05 am
LAS
- STL
Nonstop3h 14m
Frontier
Deal found 2/20![Frontier logo]()
$156
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 3/2412:14 pm
STL
- LAS
Nonstop3h 57m
Frontier
Sat 3/286:05 am
LAS
- STL
Nonstop3h 14m
Frontier
Deal found 2/22![Frontier logo]()
$145
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.
Sun 3/2910:49 pm
STL
- PHX
Nonstop3h 41m
Frontier
Tue 3/316:45 pm
PHX
- STL
1 stop13h 03m
Frontier
Deal found 2/22![Frontier logo]()
$152
This deal was found by Cheapflights users on 2/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/3012:14 pm
STL
- LAS
Nonstop3h 57m
Frontier
Sun 4/53:52 pm
LAS
- STL
Nonstop3h 25m
Frontier
Deal found 2/21![Frontier logo]()
$148
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 February 23, 2026.
Search for one-way flight options from St. Louis to Arizona. Find affordable one-way fares based on user searches. Data last updated February 23, 2026.
This Super.com deal was found by Cheapflights users on 2/20. Clicking the “Pick Dates” 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 4/111:06 pm
STL
- PHX
Nonstop3h 35m
Frontier
Deal found 2/20![Frontier logo]()
$58
This Super.com deal was found by Cheapflights users on 2/19. Clicking the “Pick Dates” 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.
Sun 3/110:11 pm
STL
- LAS
Nonstop3h 48m
Frontier
Deal found 2/19![Frontier logo]()
$68
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.
Sun 4/199:55 pm
STL
- LAS
Nonstop3h 42m
Frontier
Deal found 2/22![Frontier logo]()
$69
This Kiwi.com deal was found by Cheapflights users on 2/19. Clicking the “Pick Dates” 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 4/188:17 pm
STL
- LAS
1 stop23h 38m
Frontier
Deal found 2/19![Frontier logo]()
$71
This Kiwi.com deal was found by Cheapflights users on 2/20. Clicking the “Pick Dates” 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 4/188:17 pm
STL
- PHX
1 stop13h 19m
Frontier
Deal found 2/20![Frontier logo]()
$71
This Kiwi.com deal was found by Cheapflights users on 2/19. Clicking the “Pick Dates” 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 3/308:12 pm
STL
- PHX
1 stop17h 42m
Frontier
Deal found 2/19![Frontier logo]()
$72
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.
Sat 4/41:06 pm
STL
- PHX
Nonstop3h 35m
Frontier
Deal found 2/22![Frontier logo]()
$73
This Kiwi.com deal was found by Cheapflights users on 2/20. Clicking the “Pick Dates” 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 5/48:17 pm
STL
- LAS
1 stop25h 54m
Frontier
Deal found 2/20![Frontier logo]()
$74
This Trip.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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 3/278:12 pm
STL
- PHX
1 stop13h 30m
Frontier
Deal found 2/22![Frontier logo]()
$75
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.
Mon 5/118:12 pm
STL
- LAS
1 stop21h 23m
Frontier
Deal found 2/22![Frontier logo]()
$76
This Super.com deal was found by Cheapflights users on 2/20. Clicking the “Pick Dates” 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 3/2012:14 pm
STL
- LAS
Nonstop3h 57m
Frontier
Deal found 2/20![Frontier logo]()
$78
This Kiwi.com deal was found by Cheapflights users on 2/20. Clicking the “Pick Dates” 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 3/238:12 pm
STL
- PHX
1 stop19h 49m
Frontier
Deal found 2/20![Frontier logo]()
$78
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 February 23, 2026.
Round-trip from | $144 (Super.com) |
|---|---|
One-way from | $58 (Super.com) |
Popular in | March |
Cheapest in | November |
Average price | $346 |
Good round-trip deal | $335 or less |
Good one-way deal | $163 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 February 23, 2026.
Use the filters below to find and compare flights from St. Louis to Arizona that are best for you.
Fly from
St. Louis
Fly to
Arizona
Route
Depart
Return
Price
St. LouisLas Vegas
STL - LAS
STLLAS
Lambert-St Louis
Fri 4/24
5:35 pm-11:13 pm
1 stop7h 38m
Las Vegas Harry Reid Intl
Tue 4/28
6:20 am-2:29 pm
1 stop6h 09m
$233
St. LouisLas Vegas
STL - LAS
STLLAS
Lambert-St Louis
Wed 5/6
5:35 pm-11:14 pm
1 stop7h 39m
Las Vegas Harry Reid Intl
Sat 5/9
12:45 am-10:27 am
1 stop7h 42m
$233
St. LouisLas Vegas
STL - LAS
STLLAS
Lambert-St Louis
Mon 5/11
7:59 pm-11:43 pm
1 stop5h 44m
Las Vegas Harry Reid Intl
Thu 5/21
12:45 am-10:27 am
1 stop7h 42m
$233
St. LouisPhoenix
STL - PHX
STLPHX
Lambert-St Louis
Mon 4/20
3:21 pm-11:47 pm
2 stops10h 26m
Phoenix Sky Harbor Intl
Thu 4/23
9:00 am-9:00 pm
1 stop10h 00m
$234
St. LouisLas Vegas
STL - LAS
STLLAS
Lambert-St Louis
Wed 4/22
2:20 pm-10:41 pm
2 stops10h 21m
Las Vegas Harry Reid Intl
Sat 4/25
9:23 am-4:50 pm
1 stop5h 27m
$263
St. LouisTucson
STL - TUS
STLTUS
Lambert-St Louis
Tue 3/31
7:03 am-2:14 pm
1 stop9h 11m
Tucson
Sat 4/4
3:28 pm-11:58 pm
1 stop6h 30m
$303
St. LouisTucson
STL - TUS
STLTUS
Lambert-St Louis
Sat 5/2
5:00 pm-9:31 pm
1 stop6h 31m
Tucson
Mon 5/4
1:30 pm-2:29 pm
2 stops22h 59m
$308
St. LouisPhoenix
STL - PHX
STLPHX
Lambert-St Louis
Sat 3/28
9:35 pm-11:00 pm
Nonstop3h 25m
Phoenix Sky Harbor Intl
Wed 4/1
8:40 am-1:35 pm
Nonstop2h 55m
$315
St. LouisLas Vegas
STL - LAS
STLLAS
Lambert-St Louis
Wed 5/20
5:59 pm-10:05 pm
1 stop6h 06m
Las Vegas Harry Reid Intl
Wed 6/3
2:15 pm-11:57 pm
2 stops7h 42m
$318
St. LouisLas Vegas
STL - LAS
STLLAS
Lambert-St Louis
Wed 4/1
9:10 am-5:23 pm
2 stops10h 13m
Las Vegas Harry Reid Intl
Mon 4/6
11:22 pm-8:25 am
1 stop7h 03m
$318
Showing 1-10 of 56 results
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-PHX
STL-LAS
STL-TUS
STL-FLG
STL-YUM
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-PHX
STL-LAS
STL-TUS
STL-FLG
What is the cheapest month to book a flight from St. Louis to Arizona?
Currently, February is the cheapest month in which you can book a flight from St. Louis to Arizona (average of $105). Flying from St. Louis to Arizona in June is currently the most expensive (average of $236). 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 February 23, 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 28% on your trip compared to booking a flight in the morning.
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 February 21, 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 evenings flights should be avoided if possible as fares are typically the most expensive at this time.
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 February 23, 2026.
The most flights from STL to USAZ are scheduled on a Monday (17 on average). You will have fewer flight options on Tuesday, which is when the least amount of flights are scheduled (4 on average).
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 February 23, 2026.
Get a feel of what it's like to fly with Southwest, Delta, and United 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.
Food
7.0
Comfort
8.0
Overall
8.0
Boarding
8.1
Crew
8.6
Entertainment
7.5
Reviews
1 / 20
2.0
MediocreThomas,Dec 2025
SEA - DEN
Food
7.0
Comfort
8.0
Overall
8.0
Boarding
8.1
Crew
8.6
Entertainment
7.5
Reviews
1 / 20
2.0
MediocreThomas,Dec 2025
SEA - DEN
Food
7.0
Comfort
8.0
Overall
8.0
Boarding
8.1
Crew
8.6
Entertainment
7.5
Reviews
1 / 20
2.0
MediocreThomas,Dec 2025
SEA - DEN
Food
7.0
Comfort
8.0
Overall
8.0
Boarding
8.1
Crew
8.6
Entertainment
7.5
Reviews
1 / 20
2.0
MediocreThomas,Dec 2025
SEA - DEN
Food
7.0
Comfort
8.0
Overall
8.0
Boarding
8.1
Crew
8.6
Entertainment
7.5
Reviews
1 / 20
2.0
MediocreThomas,Dec 2025
SEA - DEN
Food
7.0
Comfort
8.0
Overall
8.0
Boarding
8.1
Crew
8.6
Entertainment
7.5
Reviews
1 / 20
2.0
MediocreThomas,Dec 2025
SEA - DEN
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 February 23, 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 6 airlines flying from St. Louis to Arizona
Discover the top 6 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 February 23, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$93 | Average$206 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$121 | Average$200 | FlexibilityNo cancel fee | On-time65% | |
| Cheapest$141 | Average$337 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$148 | Average$391 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$210 | Average$431 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$218 | Average$402 | FlexibilityNo cancel fee | On-time63% |