$149+ Cheap flights from St. Louis (STL) to Mexico
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 9/1. Fares are subject to change and may not be available on all flights or dates of travel.
STL — MEX
Jul 15 — Jul 221
Round-trip
1 adult, Economy
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Find cheap flights from St. Louis to Mexico 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 MexicoExplore the most affordable flight options available from St. Louis to Mexico. Find the lowest fares from popular airlines and budget airlines, with prices last updated on June 15, 2026.
Explore the most affordable flight options available from St. Louis to Mexico. Find the lowest fares from popular airlines and budget airlines, with prices last updated on June 15, 2026.
This Priceline deal was found by Cheapflights users on 6/10. Clicking the “Pick Dates” 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 7/46:30 am
STL
- MEX
1 stop17h 40m
Frontier
Tue 7/78:45 pm
MEX
- STL
1 stop16h 38m
Frontier
Deal found 6/10![Frontier logo]()
$363
This Frontier deal was found by Cheapflights users on 6/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/253:33 pm
STL
- MEX
1 stop8h 12m
Frontier
Wed 8/268:40 am
MEX
- STL
1 stop9h 43m
Frontier
Deal found 6/11![Frontier logo]()
$368
This American Airlines deal was found by Cheapflights users on 6/11. Clicking the “Pick Dates” 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 7/257:24 pm
STL
- SJD
1 stop16h 15m
American Airlines
Fri 7/3112:40 pm
SJD
- STL
1 stop9h 36m
American Airlines
Deal found 6/11![American Airlines logo]()
$382
This United Airlines deal was found by Cheapflights users on 6/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 7/275:10 am
STL
- SJD
1 stop8h 55m
United Airlines
Fri 7/3110:00 am
SJD
- STL
2 stops11h 44m
United Airlines
Deal found 6/14![United Airlines logo]()
$386
This Kiwi.com deal was found by Cheapflights users on 6/12. Clicking the “Pick Dates” 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 7/57:10 pm
STL
- CUN
2 stops38h 45m
Multiple Airlines
Fri 7/173:06 pm
CUN
- STL
1 stop17h 51m
Multiple Airlines
Deal found 6/12![Multiple Airlines logo]()
$401
This Orbitz deal was found by Cheapflights users on 6/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Orbitz is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/148:08 pm
STL
- CUN
1 stop16h 41m
Frontier
Tue 7/213:31 pm
CUN
- STL
1 stop27h 52m
Frontier
Deal found 6/14![Frontier logo]()
$409
This United Airlines deal was found by Cheapflights users on 6/10. Clicking the “Pick Dates” 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 9/168:35 am
STL
- SJD
1 stop6h 13m
United Airlines
Thu 9/171:44 pm
SJD
- STL
1 stop6h 46m
United Airlines
Deal found 6/10![United Airlines logo]()
$409
This Kiwi.com deal was found by Cheapflights users on 6/11. Clicking the “Pick Dates” 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 8/113:41 pm
STL
- MEX
1 stop8h 04m
Multiple Airlines
Mon 8/1711:00 am
MEX
- STL
1 stop30h 08m
Multiple Airlines
Deal found 6/11![Multiple Airlines logo]()
$410
This Kiwi.com deal was found by Cheapflights users on 6/11. Clicking the “Pick Dates” 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 8/113:41 pm
STL
- MEX
1 stop8h 04m
Multiple Airlines
Tue 8/187:00 am
MEX
- STL
1 stop6h 48m
Multiple Airlines
Deal found 6/11![Multiple Airlines logo]()
$411
This Frontier deal was found by Cheapflights users on 6/11. Clicking the “Pick Dates” 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 7/104:57 pm
STL
- CUN
1 stop20h 49m
Frontier
Thu 7/163:31 pm
CUN
- STL
2 stops41h 26m
Frontier
Deal found 6/11![Frontier logo]()
$412
This Frontier deal was found by Cheapflights users on 6/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/78:08 pm
STL
- CUN
1 stop16h 41m
Frontier
Thu 8/133:31 pm
CUN
- STL
2 stops17h 26m
Frontier
Deal found 6/13![Frontier logo]()
$413
This Kiwi.com deal was found by Cheapflights users on 6/12. Clicking the “Pick Dates” 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 7/42:56 pm
STL
- CUN
2 stops18h 59m
Multiple Airlines
Wed 7/83:31 pm
CUN
- STL
1 stop27h 52m
Multiple Airlines
Deal found 6/12![Multiple Airlines logo]()
$416
Best flights from St. Louis to MexicoDiscover carefully curated flight deals from St. Louis to Mexico that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated June 15, 2026.
Discover carefully curated flight deals from St. Louis to Mexico that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated June 15, 2026.
This Delta deal was found by Cheapflights users on 6/14. Clicking the “Pick Dates” 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 7/276:00 am
STL
- SJD
1 stop7h 11m
Delta
Fri 7/311:25 pm
SJD
- STL
1 stop9h 16m
Delta
Deal found 6/14![Delta logo]()
$382
This United Airlines deal was found by Cheapflights users on 6/12. Clicking the “Pick Dates” 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 7/256:00 am
STL
- SJD
1 stop7h 25m
United Airlines
Fri 7/3110:00 am
SJD
- STL
2 stops11h 44m
United Airlines
Deal found 6/12![United Airlines logo]()
$431
This Southwest deal was found by Cheapflights users on 6/11. Clicking the “Pick Dates” 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 10/1210:10 am
STL
- CUN
Nonstop3h 05m
Southwest
Thu 10/152:40 pm
CUN
- STL
Nonstop3h 10m
Southwest
Deal found 6/11![Southwest logo]()
$434
This Kiwi.com deal was found by Cheapflights users on 6/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/285:33 pm
STL
- MEX
2 stops30h 12m
Multiple Airlines
Wed 9/27:00 am
MEX
- STL
1 stop6h 48m
Multiple Airlines
Deal found 6/10![Multiple Airlines logo]()
$451
This FlightHub deal was found by Cheapflights users on 6/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/303:41 pm
STL
- MEX
1 stop8h 04m
Volaris
Wed 8/58:40 am
MEX
- STL
1 stop9h 43m
Volaris
Deal found 6/12![Volaris logo]()
$500
This Aeromexico deal was found by Cheapflights users on 6/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Aeromexico is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/317:00 am
STL
- BJX
2 stops17h 12m
Aeromexico
Wed 9/29:00 am
BJX
- STL
1 stop8h 27m
Aeromexico
Deal found 6/10![Aeromexico logo]()
$540
This American Airlines deal was found by Cheapflights users on 6/14. Clicking the “Pick Dates” 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 10/1110:14 am
STL
- PVR
1 stop25h 27m
American Airlines
Sat 10/1711:41 am
PVR
- STL
1 stop11h 00m
American Airlines
Deal found 6/14![American Airlines logo]()
$598
This Air Canada deal was found by Cheapflights users on 6/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/94:15 pm
STL
- GDL
1 stop29h 45m
Air Canada
Wed 11/119:20 am
GDL
- STL
1 stop30h 10m
Air Canada
Deal found 6/14![Air Canada logo]()
$667
This Delta deal was found by Cheapflights users on 6/12. Clicking the “Pick Dates” 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 7/59:21 am
STL
- CUN
1 stop11h 04m
Delta
Fri 7/172:10 pm
CUN
- STL
1 stop9h 12m
Delta
Deal found 6/12![Delta logo]()
$449
This Kiwi.com deal was found by Cheapflights users on 6/10. Clicking the “Pick Dates” 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 9/286:41 pm
STL
- MEX
2 stops26h 19m
Multiple Airlines
Mon 10/57:00 am
MEX
- STL
1 stop9h 44m
Multiple Airlines
Deal found 6/10![Multiple Airlines logo]()
$454
This United Airlines deal was found by Cheapflights users on 6/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/126:15 am
STL
- CUN
1 stop13h 04m
United Airlines
Thu 10/225:22 pm
CUN
- STL
2 stops18h 51m
United Airlines
Deal found 6/11![United Airlines logo]()
$483
This Volaris deal was found by Cheapflights users on 6/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Volaris is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/23:41 pm
STL
- MEX
1 stop8h 04m
Volaris
Mon 8/108:45 pm
MEX
- STL
1 stop16h 38m
Volaris
Deal found 6/14![Volaris logo]()
$504
This Delta deal was found by Cheapflights users on 6/14. Clicking the “Pick Dates” 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 8/2711:00 am
STL
- SJD
2 stops13h 27m
Delta
Sun 8/306:15 am
SJD
- STL
2 stops15h 43m
Delta
Deal found 6/14![Delta logo]()
$472
This Southwest deal was found by Cheapflights users on 6/12. Clicking the “Pick Dates” 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 10/1110:05 am
STL
- CUN
Nonstop3h 05m
Southwest
Fri 10/163:25 pm
CUN
- STL
1 stop7h 45m
Southwest
Deal found 6/12![Southwest logo]()
$525
This Aeromexico deal was found by Cheapflights users on 6/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Aeromexico is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/209:15 am
STL
- BJX
1 stop8h 55m
Aeromexico
Mon 8/246:10 am
BJX
- STL
2 stops16h 48m
Aeromexico
Deal found 6/14![Aeromexico logo]()
$540
This United Airlines deal was found by Cheapflights users on 6/10. Clicking the “Pick Dates” 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 10/68:00 am
STL
- CUN
1 stop6h 26m
United Airlines
Sat 10/1012:11 pm
CUN
- STL
1 stop9h 10m
United Airlines
Deal found 6/10![United Airlines logo]()
$491
This Kiwi.com deal was found by Cheapflights users on 6/10. Clicking the “Pick Dates” 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 7/96:34 pm
STL
- GDL
2 stops43h 51m
Multiple Airlines
Fri 8/78:46 am
GDL
- STL
1 stop8h 29m
Multiple Airlines
Deal found 6/10![Multiple Airlines logo]()
$501
This Volaris deal was found by Cheapflights users on 6/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Volaris is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/93:41 pm
STL
- MEX
1 stop8h 04m
Volaris
Sat 8/158:45 pm
MEX
- STL
1 stop16h 38m
Volaris
Deal found 6/11![Volaris logo]()
$518
This Delta deal was found by Cheapflights users on 6/10. Clicking the “Pick Dates” 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 10/36:25 am
STL
- SJD
2 stops14h 08m
Delta
Thu 10/86:15 am
SJD
- STL
2 stops16h 21m
Delta
Deal found 6/10![Delta logo]()
$477
This Southwest deal was found by Cheapflights users on 6/11. Clicking the “Pick Dates” 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 9/116:00 am
STL
- PVR
1 stop9h 15m
Southwest
Tue 9/151:15 pm
PVR
- STL
1 stop8h 20m
Southwest
Deal found 6/11![Southwest logo]()
$529
This Aeromexico deal was found by Cheapflights users on 6/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Aeromexico is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/177:00 am
STL
- PVR
1 stop6h 28m
Aeromexico
Wed 8/191:39 pm
PVR
- STL
1 stop8h 42m
Aeromexico
Deal found 6/14![Aeromexico logo]()
$544
This United Airlines deal was found by Cheapflights users on 6/12. Clicking the “Pick Dates” 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 8/235:30 pm
STL
- SJD
2 stops19h 00m
United Airlines
Thu 8/271:44 pm
SJD
- STL
2 stops23h 54m
United Airlines
Deal found 6/12![United Airlines logo]()
$506
This Kiwi.com deal was found by Cheapflights users on 6/12. Clicking the “Pick Dates” 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 7/274:57 pm
STL
- MEX
2 stops20h 23m
Multiple Airlines
Mon 8/311:05 am
MEX
- STL
1 stop11h 54m
Multiple Airlines
Deal found 6/12![Multiple Airlines logo]()
$507
This American Airlines deal was found by Cheapflights users on 6/15. Clicking the “Pick Dates” 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 7/308:38 am
STL
- BJX
1 stop8h 54m
American Airlines
Thu 8/64:53 pm
BJX
- STL
1 stop15h 31m
American Airlines
Deal found 6/15![American Airlines logo]()
$627
This Southwest deal was found by Cheapflights users on 6/10. Clicking the “Pick Dates” 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 8/85:15 am
STL
- PVR
1 stop6h 40m
Southwest
Tue 8/111:15 pm
PVR
- STL
1 stop8h 20m
Southwest
Deal found 6/10![Southwest logo]()
$529
This Aeromexico deal was found by Cheapflights users on 6/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Aeromexico is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/3111:00 am
STL
- MEX
2 stops12h 45m
Aeromexico
Wed 9/28:00 am
MEX
- STL
2 stops14h 21m
Aeromexico
Deal found 6/14![Aeromexico logo]()
$544
This United Airlines deal was found by Cheapflights users on 6/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/146:15 am
STL
- SJD
1 stop8h 33m
United Airlines
Fri 9/181:44 pm
SJD
- STL
1 stop22h 31m
United Airlines
Deal found 6/14![United Airlines logo]()
$511
This Kiwi.com deal was found by Cheapflights users on 6/10. Clicking the “Pick Dates” 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 7/183:41 pm
STL
- GDL
1 stop23h 28m
Multiple Airlines
Sun 7/268:20 am
GDL
- STL
2 stops23h 37m
Multiple Airlines
Deal found 6/10![Multiple Airlines logo]()
$515
This Delta deal was found by Cheapflights users on 6/13. Clicking the “Pick Dates” 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 8/1811:00 am
STL
- CUN
1 stop9h 05m
Delta
Tue 8/259:11 am
CUN
- STL
2 stops14h 10m
Delta
Deal found 6/13![Delta logo]()
$529
This Southwest deal was found by Cheapflights users on 6/11. Clicking the “Pick Dates” 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 7/135:35 am
STL
- SJD
1 stop8h 45m
Southwest
Sat 7/183:15 pm
SJD
- STL
2 stops15h 45m
Southwest
Deal found 6/11![Southwest logo]()
$531
Last-minute flights from St. Louis to MexicoDiscover last-minute flight deals from St. Louis to Mexico. Data last updated June 15, 2026 and is based on user searches.
Discover last-minute flight deals from St. Louis to Mexico. Data last updated June 15, 2026 and is based on user searches.
This Priceline deal was found by Cheapflights users on 6/10. Clicking the “Pick Dates” 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 7/46:30 am
STL
- MEX
1 stop17h 40m
Frontier
Tue 7/78:45 pm
MEX
- STL
1 stop16h 38m
Frontier
Deal found 6/10![Frontier logo]()
$363
This Kiwi.com deal was found by Cheapflights users on 6/12. Clicking the “Pick Dates” 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 7/42:56 pm
STL
- CUN
2 stops18h 59m
Multiple Airlines
Wed 7/83:31 pm
CUN
- STL
1 stop27h 52m
Multiple Airlines
Deal found 6/12![Multiple Airlines logo]()
$416
This Kiwi.com deal was found by Cheapflights users on 6/10. Clicking the “Pick Dates” 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 7/42:56 pm
STL
- CUN
2 stops18h 59m
Multiple Airlines
Tue 7/73:31 pm
CUN
- STL
1 stop27h 52m
Multiple Airlines
Deal found 6/10![Multiple Airlines logo]()
$421
This Kiwi.com deal was found by Cheapflights users on 6/10. Clicking the “Pick Dates” 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 7/42:56 pm
STL
- MEX
2 stops17h 29m
Multiple Airlines
Tue 7/711:00 am
MEX
- STL
1 stop30h 05m
Multiple Airlines
Deal found 6/10![Multiple Airlines logo]()
$426
This Kiwi.com deal was found by Cheapflights users on 6/12. Clicking the “Pick Dates” 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 7/57:10 pm
STL
- CUN
2 stops38h 45m
Multiple Airlines
Fri 7/173:06 pm
CUN
- STL
1 stop17h 51m
Multiple Airlines
Deal found 6/12![Multiple Airlines logo]()
$401
This CheapOair deal was found by Cheapflights users on 6/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/78:08 pm
STL
- CUN
1 stop16h 41m
Frontier
Tue 7/143:31 pm
CUN
- STL
1 stop27h 52m
Frontier
Deal found 6/10![Frontier logo]()
$427
This Frontier deal was found by Cheapflights users on 6/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/93:41 pm
STL
- CUN
2 stops17h 26m
Frontier
Thu 7/163:31 pm
CUN
- STL
2 stops17h 26m
Frontier
Deal found 6/11![Frontier logo]()
$429
This Frontier deal was found by Cheapflights users on 6/11. Clicking the “Pick Dates” 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 7/104:57 pm
STL
- CUN
1 stop20h 49m
Frontier
Thu 7/163:31 pm
CUN
- STL
2 stops41h 26m
Frontier
Deal found 6/11![Frontier logo]()
$412
This Orbitz deal was found by Cheapflights users on 6/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Orbitz is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/148:08 pm
STL
- CUN
1 stop16h 41m
Frontier
Tue 7/213:31 pm
CUN
- STL
1 stop27h 52m
Frontier
Deal found 6/14![Frontier logo]()
$409
This American Airlines deal was found by Cheapflights users on 6/12. Clicking the “Pick Dates” 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 7/218:01 am
STL
- SJD
1 stop6h 16m
American Airlines
Mon 7/2712:40 pm
SJD
- STL
1 stop9h 36m
American Airlines
Deal found 6/12![American Airlines logo]()
$427
This American Airlines deal was found by Cheapflights users on 6/11. Clicking the “Pick Dates” 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 7/257:24 pm
STL
- SJD
1 stop16h 15m
American Airlines
Fri 7/3112:40 pm
SJD
- STL
1 stop9h 36m
American Airlines
Deal found 6/11![American Airlines logo]()
$382
This United Airlines deal was found by Cheapflights users on 6/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 7/275:10 am
STL
- SJD
1 stop8h 55m
United Airlines
Fri 7/3110:00 am
SJD
- STL
2 stops11h 44m
United Airlines
Deal found 6/14![United Airlines logo]()
$386
One-way flights from St. Louis to MexicoSearch for one-way flight options from St. Louis to Mexico. Find affordable one-way fares based on user searches. Data last updated June 15, 2026.
Search for one-way flight options from St. Louis to Mexico. Find affordable one-way fares based on user searches. Data last updated June 15, 2026.
This Kiwi.com deal was found by Cheapflights users on 6/12. Clicking the “Pick Dates” 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 9/13:33 pm
STL
- CUN
2 stops18h 30m
Multiple Airlines
Deal found 6/12![Multiple Airlines logo]()
$149
This Kiwi.com deal was found by Cheapflights users on 6/14. Clicking the “Pick Dates” 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 9/83:33 pm
STL
- CUN
2 stops18h 30m
Multiple Airlines
Deal found 6/14![Multiple Airlines logo]()
$160
This Kiwi.com deal was found by Cheapflights users on 6/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/128:08 pm
STL
- CUN
1 stop16h 41m
Frontier
Deal found 6/15![Frontier logo]()
$167
This Mytrip deal was found by Cheapflights users on 6/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 7/46:30 am
STL
- MEX
1 stop17h 40m
Frontier
Deal found 6/11![Frontier logo]()
$167
This Kiwi.com deal was found by Cheapflights users on 6/10. Clicking the “Pick Dates” 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 7/42:56 pm
STL
- CUN
2 stops18h 59m
Multiple Airlines
Deal found 6/10![Multiple Airlines logo]()
$168
This Kiwi.com deal was found by Cheapflights users on 6/15. Clicking the “Pick Dates” 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 7/127:10 pm
STL
- GDL
1 stop29h 48m
Multiple Airlines
Deal found 6/15![Multiple Airlines logo]()
$168
This Delta deal was found by Cheapflights users on 6/10. Clicking the “Pick Dates” 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 9/86:00 am
STL
- SJD
1 stop7h 22m
Delta
Deal found 6/10![Delta logo]()
$169
This American Airlines deal was found by Cheapflights users on 6/11. Clicking the “Pick Dates” 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 8/85:11 pm
STL
- CUN
1 stop16h 36m
American Airlines
Deal found 6/11![American Airlines logo]()
$172
This Kiwi.com deal was found by Cheapflights users on 6/14. Clicking the “Pick Dates” 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 7/107:10 pm
STL
- CUN
2 stops38h 45m
Multiple Airlines
Deal found 6/14![Multiple Airlines logo]()
$173
This Kiwi.com deal was found by Cheapflights users on 6/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/78:08 pm
STL
- CUN
1 stop16h 41m
Frontier
Deal found 6/11![Frontier logo]()
$174
This Delta deal was found by Cheapflights users on 6/11. Clicking the “Pick Dates” 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 12/72:15 pm
STL
- SJD
2 stops25h 20m
Delta
Deal found 6/11![Delta logo]()
$175
This American Airlines deal was found by Cheapflights users on 6/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/196:36 am
STL
- CUN
1 stop13h 27m
American Airlines
Deal found 6/10![American Airlines logo]()
$177
Find flight deals from St. Louis to Mexico
Keep the following information in mind while searching for St. Louis to Mexico flight deals. Data was last updated June 15, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $363 (Priceline) |
One-way from | $149 (Kiwi.com) |
Popular in | December |
Cheapest in | April |
Average price | $698 |
Good round-trip deal | $457 or less |
Good one-way deal | $215 or less |
Cheapflights Fare Finder
Customize your flight search to find flights from St. Louis to Mexico 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 June 15, 2026.
Use the filters below to find and compare flights from St. Louis to Mexico that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
St. LouisSan José del Cabo
STL - SJD
STLSJD
Lambert-St Louis
Mon 7/27
6:00 am-11:11 am
1 stop7h 11m
San José del Cabo Los Cabos
Fri 7/31
1:25 pm-12:41 am
1 stop9h 16m
$382
St. LouisSan José del Cabo
STL - SJD
STLSJD
Lambert-St Louis
Sat 7/25
6:00 am-11:25 am
1 stop7h 25m
San José del Cabo Los Cabos
Fri 7/31
10:00 am-11:44 pm
2 stops11h 44m
$431
Quickest round-trip
St. LouisCancún
STL - CUN
STLCUN
Lambert-St Louis
Mon 10/12
10:10 am-1:15 pm
Nonstop3h 05m
Cancun
Thu 10/15
2:40 pm-5:50 pm
Nonstop3h 10m
$434
St. LouisCancún
STL - CUN
STLCUN
Lambert-St Louis
Sun 7/5
9:21 am-8:25 pm
1 stop11h 04m
Cancun
Fri 7/17
2:10 pm-11:22 pm
1 stop9h 12m
$449
St. LouisMexico City
STL - MEX
STLMEX
Lambert-St Louis
Fri 8/28
5:33 pm-10:45 pm
2 stops30h 12m
Mexico City Benito Juarez
Wed 9/2
7:00 am-2:48 pm
1 stop6h 48m
$451
St. LouisMexico City
STL - MEX
STLMEX
Lambert-St Louis
Mon 9/28
6:41 pm-8:00 pm
2 stops26h 19m
Mexico City Benito Juarez
Mon 10/5
7:00 am-5:44 pm
1 stop9h 44m
$454
St. LouisSan José del Cabo
STL - SJD
STLSJD
Lambert-St Louis
Thu 8/27
11:00 am-10:27 pm
2 stops13h 27m
San José del Cabo Los Cabos
Sun 8/30
6:15 am-11:58 pm
2 stops15h 43m
$472
St. LouisSan José del Cabo
STL - SJD
STLSJD
Lambert-St Louis
Sat 10/3
6:25 am-6:33 pm
2 stops14h 08m
San José del Cabo Los Cabos
Thu 10/8
6:15 am-12:36 am
2 stops16h 21m
$477
St. LouisCancún
STL - CUN
STLCUN
Lambert-St Louis
Mon 10/12
6:15 am-7:19 pm
1 stop13h 04m
Cancun
Thu 10/22
5:22 pm-12:13 pm
2 stops18h 51m
$483
St. LouisCancún
STL - CUN
STLCUN
Lambert-St Louis
Tue 10/6
8:00 am-2:26 pm
1 stop6h 26m
Cancun
Sat 10/10
12:11 pm-9:21 pm
1 stop9h 10m
$491
Showing 1-10 of 60 resultsSorted by cheapest first
Best time to book a flight from St. Louis to Mexico
Have a flexible travel schedule? Discover the best time to fly to Mexico from St. Louis with our price prediction graph.
STL-GDL
STL-SJD
STL-MEX
STL-PVR
STL-CUN
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 Mexico
STL-MX0
STL-GDL
STL-SJD
STL-MEX
STL-PVR
What is the cheapest month to book a flight from St. Louis to Mexico?
Currently, October is the cheapest month in which you can book a flight from St. Louis to Mexico (average of $112). Flying from St. Louis to Mexico in January is currently the most expensive (average of $1,545). 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 MX?
Find hourly flight availability from St. Louis to Mexico. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated June 15, 2026.
When flying from St. Louis to Mexico, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.
How far ahead should I book a flight from St. Louis to Mexico?
The best time to book flights from St. Louis to Mexico is 41 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.
Reviews of airlines servicing Mexico
Get insights into the airlines that provide service to Mexico. 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 Mexico. Reviews last updated June 15, 2026.
Read reviews from past customers who have flown Southwest,United Airlines, andAmerican Airlines from St. Louis to Mexico. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
Entertainment
7.5
Overall
7.9
Boarding
8.1
Comfort
8.0
Crew
8.6
Food
7.0
Reviews
1 / 20
8.0
ExcellentLa Tracimeldamarcos,Jun 2026
LAX - SLC
Entertainment
7.5
Overall
7.9
Boarding
8.1
Comfort
8.0
Crew
8.6
Food
7.0
Reviews
1 / 20
8.0
ExcellentLa Tracimeldamarcos,Jun 2026
LAX - SLC
Entertainment
7.5
Overall
7.9
Boarding
8.1
Comfort
8.0
Crew
8.6
Food
7.0
Reviews
1 / 20
8.0
ExcellentLa Tracimeldamarcos,Jun 2026
LAX - SLC
Entertainment
7.5
Overall
7.9
Boarding
8.1
Comfort
8.0
Crew
8.6
Food
7.0
Reviews
1 / 20
8.0
ExcellentLa Tracimeldamarcos,Jun 2026
LAX - SLC
Entertainment
7.5
Overall
7.9
Boarding
8.1
Comfort
8.0
Crew
8.6
Food
7.0
Reviews
1 / 20
8.0
ExcellentLa Tracimeldamarcos,Jun 2026
LAX - SLC
Entertainment
7.5
Overall
7.9
Boarding
8.1
Comfort
8.0
Crew
8.6
Food
7.0
Reviews
1 / 20
8.0
ExcellentLa Tracimeldamarcos,Jun 2026
LAX - SLC
Related info for your journey
Find useful and relevant information for your journey from St. Louis to Mexico. 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 Mexico
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Complete your trip
Complete your trip to Mexico by adding a car rental and/or hotel reservation to your travel itinerary.
Search flights from St. Louis to Mexico by cabin class
Find flights from St. Louis to Mexico, based on your preferred cabin class, be it economy, premium economy, business, or first class.
St. Louis and Mexico flights
Browse other St. Louis and Mexico flight options. Last updated on June 15, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
St. Louis to Mexico flights
Consider these flights traveling from St. Louis to Mexico.
Fly to Mexico regions
Consider these flights traveling to Mexico regions.
Top 10 airlines flying from St. Louis to Mexico
Discover the top 10 airlines that operate flights from St. Louis to Mexico. 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 June 15, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$168 | Average$472 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$179 | Average$608 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$180 | Average$377 | FlexibilityNo cancel fee | On-time79% | |
| Cheapest$195 | Average$550 | FlexibilityNo cancel fee | On-time67% | |
| Cheapest$226 | Average$428 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$278 | Average$646 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$402 | Average$661 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$404 | Average$468 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$463 | Average$656 | FlexibilityNo cancel fee | On-time63% | |
| Cheapest$527 | Average$597 | FlexibilityNo cancel fee | On-time75% |