$53+ Cheap flights from St. Louis (STL) to the United States
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 4/27. Fares are subject to change and may not be available on all flights or dates of travel.
STL — LAX
Mar 23 — Mar 301
1 adult, Economy
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Find cheap flights from St. Louis to USA 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 USAExplore the most affordable flight options available from St. Louis to USA. Find the lowest fares from popular airlines and budget airlines, with prices last updated on February 21, 2026.
Explore the most affordable flight options available from St. Louis to USA. Find the lowest fares from popular airlines and budget airlines, with prices last updated on February 21, 2026.
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 3/148:12 pm
STL
- DEN
Nonstop2h 37m
Frontier
Wed 3/186:35 am
DEN
- STL
Nonstop2h 14m
Frontier
Deal found 2/19![Frontier logo]()
$73
This Cheapflightsfares deal was found by Cheapflights users on 2/17. Clicking the “Pick Dates” 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 3/78:12 pm
STL
- DEN
Nonstop2h 37m
Frontier
Wed 3/116:35 am
DEN
- STL
Nonstop2h 14m
Frontier
Deal found 2/17![Frontier logo]()
$74
This Frontier 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 3/188:12 pm
STL
- DEN
Nonstop2h 37m
Frontier
Fri 3/276:35 am
DEN
- STL
Nonstop2h 14m
Frontier
Deal found 2/20![Frontier logo]()
$76
This Frontier deal was found by Cheapflights users on 2/18. Clicking the “Pick Dates” 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 3/68:12 pm
STL
- DEN
Nonstop2h 37m
Frontier
Wed 3/116:35 am
DEN
- STL
Nonstop2h 14m
Frontier
Deal found 2/18![Frontier logo]()
$77
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 3/218:12 pm
STL
- DEN
Nonstop2h 37m
Frontier
Sat 3/286:35 am
DEN
- STL
Nonstop2h 14m
Frontier
Deal found 2/20![Frontier logo]()
$79
This Frontier 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/168:12 pm
STL
- DEN
Nonstop2h 37m
Frontier
Sat 3/286:35 am
DEN
- STL
Nonstop2h 14m
Frontier
Deal found 2/20![Frontier logo]()
$80
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.
Fri 3/208:12 pm
STL
- DEN
Nonstop2h 37m
Frontier
Mon 3/236:35 am
DEN
- STL
Nonstop2h 14m
Frontier
Deal found 2/19![Frontier logo]()
$81
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 3/208:12 pm
STL
- DEN
Nonstop2h 37m
Frontier
Fri 3/276:35 am
DEN
- STL
Nonstop2h 14m
Frontier
Deal found 2/20![Frontier logo]()
$83
This Frontier 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/18:06 pm
STL
- DEN
Nonstop2h 33m
Frontier
Sun 5/104:00 pm
DEN
- STL
Nonstop2h 12m
Frontier
Deal found 2/21![Frontier logo]()
$84
This Kiwi.com deal was found by Cheapflights users on 2/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 4/178:12 pm
STL
- DEN
Nonstop2h 33m
Frontier
Mon 4/204:20 pm
DEN
- STL
Nonstop2h 12m
Frontier
Deal found 2/17![Frontier logo]()
$86
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.
Fri 4/248:12 pm
STL
- DEN
Nonstop2h 33m
Frontier
Mon 4/274:00 pm
DEN
- STL
Nonstop2h 12m
Frontier
Deal found 2/20![Frontier logo]()
$87
This Cheapflightsfares 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/138:41 am
STL
- MCO
Nonstop2h 30m
Frontier
Fri 4/179:31 pm
MCO
- STL
Nonstop2h 48m
Frontier
Deal found 2/19![Frontier logo]()
$107
Best flights from St. Louis to USADiscover carefully curated flight deals from St. Louis to USA that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated February 21, 2026.
Discover carefully curated flight deals from St. Louis to USA that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated February 21, 2026.
This Expedia deal was found by Cheapflights users on 2/18. Clicking the “Pick Dates” 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 3/2411:27 am
STL
- DEN
1 stop12h 37m
Frontier
Mon 3/306:35 am
DEN
- STL
Nonstop2h 14m
Frontier
Deal found 2/18![Frontier logo]()
$120
This United Airlines deal was found by Cheapflights users on 2/17. Clicking the “Pick Dates” 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 5/28:46 am
STL
- DEN
Nonstop2h 34m
United Airlines
Sat 5/25:34 pm
DEN
- STL
Nonstop2h 09m
United Airlines
Deal found 2/17![United Airlines logo]()
$157
This Delta deal was found by Cheapflights users on 2/18. Clicking the “Pick Dates” 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 4/187:00 am
STL
- DEN
1 stop5h 32m
Delta
Sat 4/256:30 am
DEN
- STL
1 stop6h 59m
Delta
Deal found 2/18![Delta logo]()
$177
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.
Wed 4/12:15 pm
STL
- DEN
Nonstop2h 25m
Southwest
Mon 4/66:25 am
DEN
- STL
Nonstop2h 10m
Southwest
Deal found 2/19![Southwest logo]()
$186
This American Airlines deal was found by Cheapflights users on 2/17. Clicking the “Pick Dates” 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 3/195:12 am
STL
- DFW
Nonstop2h 09m
American Airlines
Mon 3/237:08 am
DFW
- STL
Nonstop1h 47m
American Airlines
Deal found 2/17![American Airlines logo]()
$251
This Kiwi.com deal was found by Cheapflights users on 2/17. Clicking the “Pick Dates” 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 3/218:12 pm
STL
- DFW
2 stops27h 41m
Multiple Airlines
Mon 3/308:26 pm
DFW
- STL
1 stop14h 06m
Multiple Airlines
Deal found 2/17![Multiple Airlines logo]()
$258
This Priceline deal was found by Cheapflights users on 2/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 3/288:12 pm
STL
- DEN
Nonstop2h 37m
Frontier
Mon 3/3011:59 pm
DEN
- STL
1 stop9h 33m
Frontier
Deal found 2/17![Frontier logo]()
$149
This United Airlines deal was found by Cheapflights users on 2/18. Clicking the “Pick Dates” 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 5/24:15 pm
STL
- DEN
Nonstop2h 34m
United Airlines
Tue 5/55:34 pm
DEN
- STL
Nonstop2h 09m
United Airlines
Deal found 2/18![United Airlines logo]()
$168
This Delta deal was found by Cheapflights users on 2/17. Clicking the “Pick Dates” 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 5/165:15 pm
STL
- DEN
1 stop7h 36m
Delta
Wed 5/209:16 am
DEN
- STL
1 stop5h 03m
Delta
Deal found 2/17![Delta logo]()
$188
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 3/185:55 pm
STL
- DEN
Nonstop2h 35m
United Airlines
Wed 3/258:20 pm
DEN
- STL
Nonstop2h 14m
United Airlines
Deal found 2/20![United Airlines logo]()
$179
This Delta deal was found by Cheapflights users on 2/17. Clicking the “Pick Dates” 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 4/292:20 pm
STL
- DEN
1 stop7h 26m
Delta
Sat 5/24:30 pm
DEN
- STL
1 stop6h 06m
Delta
Deal found 2/17![Delta logo]()
$188
This Cheapflightsfares deal was found by Cheapflights users on 2/17. Clicking the “Pick Dates” 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 2/278:22 pm
STL
- MCO
1 stop9h 33m
Frontier
Tue 3/33:50 pm
MCO
- STL
1 stop25h 03m
Frontier
Deal found 2/17![Frontier logo]()
$201
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.
Tue 3/174:30 pm
STL
- DEN
Nonstop2h 36m
United Airlines
Fri 3/278:20 pm
DEN
- STL
Nonstop2h 14m
United Airlines
Deal found 2/20![United Airlines logo]()
$186
This Delta deal was found by Cheapflights users on 2/18. Clicking the “Pick Dates” 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.
Sun 5/106:20 am
STL
- DEN
1 stop5h 04m
Delta
Sat 5/169:12 am
DEN
- STL
1 stop6h 37m
Delta
Deal found 2/18![Delta logo]()
$197
This Southwest deal was found by Cheapflights users on 2/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/156:00 pm
STL
- SEA
1 stop8h 55m
Southwest
Tue 5/1911:45 pm
SEA
- STL
1 stop7h 45m
Southwest
Deal found 2/17![Southwest logo]()
$244
This United Airlines deal was found by Cheapflights users on 2/17. Clicking the “Pick Dates” 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 5/155:59 pm
STL
- DEN
Nonstop2h 34m
United Airlines
Wed 5/205:34 pm
DEN
- STL
Nonstop2h 09m
United Airlines
Deal found 2/17![United Airlines logo]()
$188
This American Airlines deal was found by Cheapflights users on 2/17. Clicking the “Pick Dates” 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 5/298:25 am
STL
- DFW
Nonstop2h 03m
American Airlines
Tue 6/210:10 pm
DFW
- STL
Nonstop1h 49m
American Airlines
Deal found 2/17![American Airlines logo]()
$258
This Delta deal was found by Cheapflights users on 2/18. Clicking the “Pick Dates” 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
- SEA
1 stop6h 21m
Delta
Wed 5/2711:50 am
SEA
- STL
1 stop7h 24m
Delta
Deal found 2/18![Delta logo]()
$203
This Southwest deal was found by Cheapflights users on 2/17. Clicking the “Pick Dates” 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 4/98:25 am
STL
- SEA
1 stop10h 55m
Southwest
Sun 4/123:25 pm
SEA
- STL
1 stop8h 30m
Southwest
Deal found 2/17![Southwest logo]()
$254
This American Airlines deal was found by Cheapflights users on 2/17. Clicking the “Pick Dates” 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 5/297:00 am
STL
- DFW
1 stop5h 17m
American Airlines
Mon 6/17:00 am
DFW
- STL
Nonstop1h 51m
American Airlines
Deal found 2/17![American Airlines logo]()
$268
This Kiwi.com deal was found by Cheapflights users on 2/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 3/510:11 pm
STL
- DFW
1 stop7h 36m
Frontier
Sun 3/81:07 pm
DFW
- STL
2 stops24h 12m
Frontier
Deal found 2/18![Frontier logo]()
$250
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 5/12:20 pm
STL
- SEA
1 stop6h 10m
Delta
Mon 5/411:14 pm
SEA
- STL
1 stop8h 28m
Delta
Deal found 2/19![Delta logo]()
$209
This Southwest deal was found by Cheapflights users on 2/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/175:15 pm
STL
- HOU
Nonstop2h 20m
Southwest
Tue 3/2410:40 am
HOU
- STL
Nonstop2h 00m
Southwest
Deal found 2/17![Southwest logo]()
$277
This Delta deal was found by Cheapflights users on 2/17. Clicking the “Pick Dates” 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 5/87:59 pm
STL
- SEA
1 stop6h 13m
Delta
Sat 5/165:30 am
SEA
- STL
1 stop9h 46m
Delta
Deal found 2/17![Delta logo]()
$209
This Expedia deal was found by Cheapflights users on 2/17. Clicking the “Pick Dates” 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.
Mon 3/912:14 pm
STL
- LAX
1 stop6h 58m
Frontier
Thu 3/128:57 pm
LAX
- STL
1 stop10h 52m
Frontier
Deal found 2/17![Frontier logo]()
$254
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.
Fri 5/15:59 pm
STL
- LAS
1 stop6h 06m
United Airlines
Sat 5/212:36 am
LAS
- STL
1 stop6h 54m
United Airlines
Deal found 2/20![United Airlines logo]()
$233
This Southwest deal was found by Cheapflights users on 2/17. Clicking the “Pick Dates” 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 3/217:40 pm
STL
- LGA
Nonstop2h 15m
Southwest
Mon 3/236:00 am
LGA
- STL
Nonstop3h 00m
Southwest
Deal found 2/17![Southwest logo]()
$278
This Delta deal was found by Cheapflights users on 2/17. Clicking the “Pick Dates” 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 3/102:22 pm
STL
- SEA
1 stop6h 06m
Delta
Tue 3/176:00 am
SEA
- STL
1 stop8h 32m
Delta
Deal found 2/17![Delta logo]()
$209
This United Airlines deal was found by Cheapflights users on 2/17. Clicking the “Pick Dates” 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 4/16:05 pm
STL
- LAS
1 stop5h 54m
United Airlines
Mon 4/611:22 pm
LAS
- STL
1 stop7h 03m
United Airlines
Deal found 2/17![United Airlines logo]()
$233
This Kiwi.com deal was found by Cheapflights users on 2/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 3/2611:21 am
STL
- DFW
1 stop5h 47m
Frontier
Mon 4/68:39 pm
DFW
- STL
2 stops13h 51m
Frontier
Deal found 2/18![Frontier logo]()
$268
Last-minute flights from St. Louis to USADiscover last-minute flight deals from St. Louis to USA. Data last updated February 21, 2026 and is based on user searches.
Discover last-minute flight deals from St. Louis to USA. Data last updated February 21, 2026 and is based on user searches.
This Cheapflightsfares deal was found by Cheapflights users on 2/18. Clicking the “Pick Dates” 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 2/243:49 pm
STL
- MCO
Nonstop2h 29m
Frontier
Wed 2/258:38 pm
MCO
- STL
Nonstop2h 49m
Frontier
Deal found 2/18![Frontier logo]()
$127
This Frontier deal was found by Cheapflights users on 2/17. Clicking the “Pick Dates” 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 3/13:49 pm
STL
- MCO
Nonstop2h 29m
Frontier
Wed 3/48:38 pm
MCO
- STL
Nonstop2h 49m
Frontier
Deal found 2/17![Frontier logo]()
$128
This Kiwi.com deal was found by Cheapflights users on 2/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/33:49 pm
STL
- MCO
Nonstop2h 29m
Frontier
Tue 3/101:30 pm
MCO
- STL
1 stop22h 07m
Frontier
Deal found 2/18![Frontier logo]()
$135
This Frontier deal was found by Cheapflights users on 2/18. Clicking the “Pick Dates” 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 3/68:12 pm
STL
- DEN
Nonstop2h 37m
Frontier
Wed 3/116:35 am
DEN
- STL
Nonstop2h 14m
Frontier
Deal found 2/18![Frontier logo]()
$77
This Frontier 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 3/68:12 pm
STL
- DEN
Nonstop2h 37m
Frontier
Mon 3/96:35 am
DEN
- STL
Nonstop2h 14m
Frontier
Deal found 2/20![Frontier logo]()
$89
This Cheapflightsfares deal was found by Cheapflights users on 2/17. Clicking the “Pick Dates” 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 3/78:12 pm
STL
- DEN
Nonstop2h 37m
Frontier
Wed 3/116:35 am
DEN
- STL
Nonstop2h 14m
Frontier
Deal found 2/17![Frontier logo]()
$74
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 3/148:12 pm
STL
- DEN
Nonstop2h 37m
Frontier
Wed 3/186:35 am
DEN
- STL
Nonstop2h 14m
Frontier
Deal found 2/19![Frontier logo]()
$73
This Frontier 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/168:12 pm
STL
- DEN
Nonstop2h 37m
Frontier
Sat 3/286:35 am
DEN
- STL
Nonstop2h 14m
Frontier
Deal found 2/20![Frontier logo]()
$80
This Frontier 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 3/188:12 pm
STL
- DEN
Nonstop2h 37m
Frontier
Fri 3/276:35 am
DEN
- STL
Nonstop2h 14m
Frontier
Deal found 2/20![Frontier logo]()
$76
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.
Fri 3/208:12 pm
STL
- DEN
Nonstop2h 37m
Frontier
Mon 3/236:35 am
DEN
- STL
Nonstop2h 14m
Frontier
Deal found 2/19![Frontier logo]()
$81
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 3/208:12 pm
STL
- DEN
Nonstop2h 37m
Frontier
Fri 3/276:35 am
DEN
- STL
Nonstop2h 14m
Frontier
Deal found 2/20![Frontier logo]()
$83
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 3/218:12 pm
STL
- DEN
Nonstop2h 37m
Frontier
Sat 3/286:35 am
DEN
- STL
Nonstop2h 14m
Frontier
Deal found 2/20![Frontier logo]()
$79
One-way flights from St. Louis to USASearch for one-way flight options from St. Louis to USA. Find affordable one-way fares based on user searches. Data last updated February 21, 2026.
Search for one-way flight options from St. Louis to USA. Find affordable one-way fares based on user searches. Data last updated February 21, 2026.
This Kiwi.com deal was found by Cheapflights users on 2/17. Clicking the “Pick Dates” 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 4/274:55 pm
STL
- MCO
Nonstop2h 26m
Frontier
Deal found 2/17![Frontier logo]()
$53
This Super.com deal was found by Cheapflights users on 2/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/23:49 pm
STL
- MCO
Nonstop2h 29m
Frontier
Deal found 2/18![Frontier logo]()
$63
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.
Wed 5/204:55 pm
STL
- MCO
Nonstop2h 26m
Frontier
Deal found 2/20![Frontier logo]()
$64
This Kiwi.com deal was found by Cheapflights users on 2/18. Clicking the “Pick Dates” 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 3/1111:32 am
STL
- DFW
1 stop5h 36m
Frontier
Deal found 2/18![Frontier logo]()
$65
This Trip.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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/3111:27 am
STL
- EWR
1 stop8h 56m
Frontier
Deal found 2/21![Frontier logo]()
$65
This Trip.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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 3/1811:32 am
STL
- MCO
1 stop7h 47m
Frontier
Deal found 2/21![Frontier logo]()
$66
This Trip.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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/2411:27 am
STL
- EWR
1 stop9h 03m
Frontier
Deal found 2/19![Frontier logo]()
$66
This Kiwi.com deal was found by Cheapflights users on 2/17. Clicking the “Pick Dates” 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 5/183:02 pm
STL
- DFW
Nonstop2h 05m
Frontier
Deal found 2/17![Frontier logo]()
$67
This Trip.com deal was found by Cheapflights users on 2/18. Clicking the “Pick Dates” 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 4/158:23 pm
STL
- MIA
1 stop12h 49m
Frontier
Deal found 2/18![Frontier logo]()
$67
This Frontier 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/203:21 pm
STL
- DFW
Nonstop2h 05m
Frontier
Deal found 2/20![Frontier logo]()
$68
This Super.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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/88:16 pm
STL
- DEN
Nonstop2h 33m
Frontier
Deal found 2/21![Frontier logo]()
$68
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.
Sun 3/110:11 pm
STL
- LAS
Nonstop3h 48m
Frontier
Deal found 2/20![Frontier logo]()
$68
Find flight deals from St. Louis to USA
Keep the following information in mind while searching for St. Louis to USA flight deals. Data was last updated February 21, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $73 (Kiwi.com) |
One-way from | $53 (Kiwi.com) |
Popular in | November |
Cheapest in | April |
Average price | $330 |
Good round-trip deal | $155 or less |
Good one-way deal | $86 or less |
Cheapflights Fare Finder
Customize your flight search to find flights from St. Louis to USA 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 21, 2026.
Use the filters below to find and compare flights from St. Louis to the United States that are best for you.
Fly from
St. Louis
Fly to
USA
Route
Depart
Return
Price
St. LouisDenver
STL - DEN
STLDEN
Lambert-St Louis
Tue 3/24
11:27 am-11:04 pm
1 stop12h 37m
Denver Intl
Mon 3/30
6:35 am-9:49 am
Nonstop2h 14m
$120
St. LouisDenver
STL - DEN
STLDEN
Lambert-St Louis
Sat 3/28
8:12 pm-9:49 pm
Nonstop2h 37m
Denver Intl
Mon 3/30
11:59 pm-10:32 am
1 stop9h 33m
$149
St. LouisDenver
STL - DEN
STLDEN
Lambert-St Louis
Sat 5/2
8:46 am-10:20 am
Nonstop2h 34m
Denver Intl
Sat 5/2
5:34 pm-8:43 pm
Nonstop2h 09m
$157
St. LouisDenver
STL - DEN
STLDEN
Lambert-St Louis
Sat 5/2
4:15 pm-5:49 pm
Nonstop2h 34m
Denver Intl
Tue 5/5
5:34 pm-8:43 pm
Nonstop2h 09m
$168
St. LouisDenver
STL - DEN
STLDEN
Lambert-St Louis
Sat 4/18
7:00 am-11:32 am
1 stop5h 32m
Denver Intl
Sat 4/25
6:30 am-2:29 pm
1 stop6h 59m
$177
St. LouisDenver
STL - DEN
STLDEN
Lambert-St Louis
Wed 3/18
5:55 pm-7:30 pm
Nonstop2h 35m
Denver Intl
Wed 3/25
8:20 pm-11:34 pm
Nonstop2h 14m
$179
St. LouisDenver
STL - DEN
STLDEN
Lambert-St Louis
Wed 4/1
2:15 pm-3:40 pm
Nonstop2h 25m
Denver Intl
Mon 4/6
6:25 am-9:35 am
Nonstop2h 10m
$186
St. LouisDenver
STL - DEN
STLDEN
Lambert-St Louis
Tue 3/17
4:30 pm-6:06 pm
Nonstop2h 36m
Denver Intl
Fri 3/27
8:20 pm-11:34 pm
Nonstop2h 14m
$186
St. LouisDenver
STL - DEN
STLDEN
Lambert-St Louis
Sat 5/16
5:15 pm-11:51 pm
1 stop7h 36m
Denver Intl
Wed 5/20
9:16 am-3:19 pm
1 stop5h 03m
$188
St. LouisDenver
STL - DEN
STLDEN
Lambert-St Louis
Wed 4/29
2:20 pm-8:46 pm
1 stop7h 26m
Denver Intl
Sat 5/2
4:30 pm-11:36 pm
1 stop6h 06m
$188
Showing 1-10 of 60 results
Best time to book a flight from St. Louis to USA
Have a flexible travel schedule? Discover the best time to fly to USA from St. Louis with our price prediction graph.
STL-MCO
STL-DFW
STL-EWR
STL-MIA
STL-DEN
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 the United States
STL-US0
STL-MCO
STL-DFW
STL-EWR
STL-MIA
What is the cheapest month to book a flight from St. Louis to USA?
Currently, March is the cheapest month in which you can book a flight from St. Louis to USA (average of $43). Flying from St. Louis to USA in June is currently the most expensive (average of $112). 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 US?
Find hourly flight availability from St. Louis to USA. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated February 21, 2026.
Unlike in the afternoon, when flights are generally more expensive, you can save up to 10% on flights from St. Louis to USA by exploring options for tickets in the evening.
What is the cheapest day to fly from St. Louis to USA?
Use this chart to determine the cheapest time to fly round-trip from St. Louis to USA. Price data was last updated on February 17, 2026.
Travelers seeking maximum savings on their St. Louis to USA flight should consider departing on Monday evenings when fares are most often at their lowest. Wednesday mornings flights should be avoided if possible as fares are typically the most expensive at this time.
Weekly flight availability from St. Louis to USA
Explore weekly flight availability from St. Louis to USA. 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 21, 2026.
The most flights from STL to US0 are scheduled on a Thursday (9 on average). You will have fewer flight options on Monday, which is when the least amount of flights are scheduled (7 on average).
How often are flights from St. Louis to the United States delayed?
About 15% of weekly flights between St. Louis and United States have experienced delays in the past year, with the average delay time being 129 minutes.
What is the most punctual flight time for St. Louis to the United States flights?
Historically, flights departing in the morning are less likely to be delayed, whereas flights leaving in the evening tend to experience delays more often.
What day of the week experiences the fewest flight delays on this route?
Tuesday tends to have the lowest number of delays on this route, whereas Sunday has historically faced a higher average of delays compared to other days of the week.
Which airline has the best punctuality record on St. Louis to the United States flights?
Over the last year, Southwest have had the lowest number of delays on this route, with just 14% of flights being delayed.
Reviews of airlines servicing USA
Get insights into the airlines that provide service to USA. 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 USA. Reviews last updated February 21, 2026.
Peruse reviews from past customers who have flown with Southwest, Delta, and United Airlines from St. Louis to the United States to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Crew
8.6
Overall
8.0
Food
7.0
Boarding
8.1
Entertainment
7.5
Comfort
8.0
Reviews
1 / 20
2.0
MediocreThomas,Dec 2025
SEA - DEN
Crew
8.6
Overall
8.0
Food
7.0
Boarding
8.1
Entertainment
7.5
Comfort
8.0
Reviews
1 / 20
2.0
MediocreThomas,Dec 2025
SEA - DEN
Crew
8.6
Overall
8.0
Food
7.0
Boarding
8.1
Entertainment
7.5
Comfort
8.0
Reviews
1 / 20
2.0
MediocreThomas,Dec 2025
SEA - DEN
Crew
8.6
Overall
8.0
Food
7.0
Boarding
8.1
Entertainment
7.5
Comfort
8.0
Reviews
1 / 20
2.0
MediocreThomas,Dec 2025
SEA - DEN
Crew
8.6
Overall
8.0
Food
7.0
Boarding
8.1
Entertainment
7.5
Comfort
8.0
Reviews
1 / 20
2.0
MediocreThomas,Dec 2025
SEA - DEN
Crew
8.6
Overall
8.0
Food
7.0
Boarding
8.1
Entertainment
7.5
Comfort
8.0
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 USA. 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 USA
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Complete your trip
Complete your trip to USA by adding a car rental and/or hotel reservation to your travel itinerary.
Search flights from St. Louis to USA by cabin class
Find flights from St. Louis to USA, based on your preferred cabin class, be it economy, premium economy, business, or first class.
St. Louis and USA flights
Browse other St. Louis and USA flight options. Last updated on February 21, 2026.
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St. Louis to USA flights
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Fly to USA regions
Consider these flights traveling to USA regions.
Top 8 airlines flying from St. Louis to USA
Discover the top 8 airlines that operate flights from St. Louis to USA. 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 21, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$52 | Average$204 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$73 | Average$185 | FlexibilityNo cancel fee | On-time65% | |
| Cheapest$108 | Average$334 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$150 | Average$394 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$176 | Average$410 | FlexibilityNo cancel fee | On-time63% | |
| Cheapest$180 | Average$364 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$206 | Average$440 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$397 | Average$505 | FlexibilityNo cancel fee | On-time75% |