$136+ 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
Aug 28 — Sep 41
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
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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 July 29, 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 July 29, 2026.
This Delta deal was found by Cheapflights users on 7/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/177:00 am
STL
- SJD
2 stops12h 35m
Delta
Wed 10/2112:25 pm
SJD
- STL
1 stop9h 29m
Delta
Deal found 7/28![Delta logo]()
$374
This FlightHub deal was found by Cheapflights users on 7/26. Clicking the “Pick Dates” 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.
Wed 10/148:10 pm
STL
- MEX
1 stop22h 20m
Frontier
Wed 10/218:40 am
MEX
- STL
1 stop9h 35m
Frontier
Deal found 7/26![Frontier logo]()
$377
This American Airlines deal was found by Cheapflights users on 7/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/176:32 am
STL
- SJD
1 stop9h 50m
American Airlines
Wed 10/2111:57 am
SJD
- STL
2 stops9h 45m
American Airlines
Deal found 7/26![American Airlines logo]()
$378
This American Airlines deal was found by Cheapflights users on 7/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/125:43 am
STL
- SJD
1 stop6h 03m
American Airlines
Sat 9/192:11 pm
SJD
- STL
1 stop17h 13m
American Airlines
Deal found 7/26![American Airlines logo]()
$381
This Kiwi.com deal was found by Cheapflights users on 7/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/306:49 pm
STL
- QRO
1 stop27h 29m
Multiple Airlines
Thu 11/52:43 pm
QRO
- STL
2 stops18h 57m
Multiple Airlines
Deal found 7/26![Multiple Airlines logo]()
$381
This Justfly.com deal was found by Cheapflights users on 7/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/312:17 pm
STL
- MEX
1 stop10h 28m
Frontier
Wed 10/78:45 pm
MEX
- STL
1 stop17h 49m
Frontier
Deal found 7/29![Frontier logo]()
$382
This American Airlines deal was found by Cheapflights users on 7/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/57:00 am
STL
- SJD
1 stop7h 32m
American Airlines
Sat 12/123:00 pm
SJD
- STL
1 stop7h 57m
American Airlines
Deal found 7/27![American Airlines logo]()
$384
This Delta deal was found by Cheapflights users on 7/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/66:00 am
STL
- SJD
2 stops13h 35m
Delta
Thu 9/1012:12 pm
SJD
- STL
1 stop9h 30m
Delta
Deal found 7/28![Delta logo]()
$393
This American Airlines deal was found by Cheapflights users on 7/24. Clicking the “Pick Dates” 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 8/306:36 am
STL
- SJD
1 stop8h 49m
American Airlines
Fri 9/41:11 pm
SJD
- STL
2 stops18h 13m
American Airlines
Deal found 7/24![American Airlines logo]()
$397
This Kiwi.com deal was found by Cheapflights users on 7/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/246:17 pm
STL
- MEX
2 stops28h 58m
Multiple Airlines
Thu 8/278:40 am
MEX
- STL
1 stop9h 33m
Multiple Airlines
Deal found 7/28![Multiple Airlines logo]()
$403
This Kiwi.com deal was found by Cheapflights users on 7/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/255:27 pm
STL
- MEX
1 stop6h 18m
Multiple Airlines
Tue 9/17:00 am
MEX
- STL
1 stop8h 31m
Multiple Airlines
Deal found 7/28![Multiple Airlines logo]()
$405
This Kiwi.com deal was found by Cheapflights users on 7/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/266:41 pm
STL
- QRO
1 stop28h 41m
Multiple Airlines
Sun 11/82:43 pm
QRO
- STL
2 stops18h 57m
Multiple Airlines
Deal found 7/25![Multiple Airlines logo]()
$408
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 July 29, 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 July 29, 2026.
This Delta deal was found by Cheapflights users on 7/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/177:00 am
STL
- SJD
2 stops12h 35m
Delta
Wed 10/219:15 am
SJD
- STL
2 stops12h 39m
Delta
Deal found 7/28![Delta logo]()
$374
This United Airlines deal was found by Cheapflights users on 7/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/265:00 am
STL
- SJD
1 stop9h 03m
United Airlines
Sat 10/311:11 pm
SJD
- STL
1 stop7h 15m
United Airlines
Deal found 7/28![United Airlines logo]()
$374
This Southwest deal was found by Cheapflights users on 7/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/156:00 am
STL
- SJD
1 stop6h 45m
Southwest
Fri 9/181:45 pm
SJD
- STL
1 stop6h 10m
Southwest
Deal found 7/28![Southwest logo]()
$374
This American Airlines deal was found by Cheapflights users on 7/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/176:32 am
STL
- SJD
1 stop9h 50m
American Airlines
Wed 10/2111:57 am
SJD
- STL
2 stops9h 45m
American Airlines
Deal found 7/25![American Airlines logo]()
$378
This Kiwi.com deal was found by Cheapflights users on 7/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/85:27 pm
STL
- MEX
1 stop6h 18m
Multiple Airlines
Tue 9/156:20 am
MEX
- STL
2 stops29h 50m
Multiple Airlines
Deal found 7/26![Multiple Airlines logo]()
$424
This FlightHub deal was found by Cheapflights users on 7/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/238:10 pm
STL
- GDL
2 stops18h 59m
Frontier
Sun 10/253:35 pm
GDL
- STL
1 stop25h 11m
Frontier
Deal found 7/28![Frontier logo]()
$496
This Volaris deal was found by Cheapflights users on 7/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Volaris is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/196:10 am
STL
- MEX
1 stop11h 30m
Volaris
Fri 10/237:00 am
MEX
- STL
1 stop9h 46m
Volaris
Deal found 7/29![Volaris logo]()
$504
This Aeromexico deal was found by Cheapflights users on 7/24. Clicking the “Pick Dates” 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.
Wed 9/306:00 am
STL
- QRO
1 stop12h 46m
Aeromexico
Fri 10/28:12 am
QRO
- STL
1 stop8h 33m
Aeromexico
Deal found 7/24![Aeromexico logo]()
$567
This United Airlines deal was found by Cheapflights users on 7/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/156:15 am
STL
- SJD
1 stop6h 15m
United Airlines
Fri 9/181:44 pm
SJD
- STL
2 stops20h 19m
United Airlines
Deal found 7/28![United Airlines logo]()
$378
This American Airlines deal was found by Cheapflights users on 7/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/246:36 am
STL
- SJD
1 stop8h 46m
American Airlines
Mon 8/311:13 pm
SJD
- STL
2 stops18h 11m
American Airlines
Deal found 7/27![American Airlines logo]()
$378
This Delta deal was found by Cheapflights users on 7/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/66:00 am
STL
- SJD
2 stops13h 35m
Delta
Thu 9/1012:12 pm
SJD
- STL
1 stop9h 30m
Delta
Deal found 7/28![Delta logo]()
$393
This United Airlines deal was found by Cheapflights users on 7/24. Clicking the “Pick Dates” 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 8/305:10 am
STL
- SJD
1 stop8h 55m
United Airlines
Fri 9/41:17 pm
SJD
- STL
1 stop8h 23m
United Airlines
Deal found 7/24![United Airlines logo]()
$393
This Kiwi.com deal was found by Cheapflights users on 7/26. Clicking the “Pick Dates” 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 8/255:27 pm
STL
- MEX
2 stops27h 33m
Multiple Airlines
Tue 9/17:00 am
MEX
- STL
1 stop8h 31m
Multiple Airlines
Deal found 7/26![Multiple Airlines logo]()
$436
This Delta deal was found by Cheapflights users on 7/25. Clicking the “Pick Dates” 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 9/266:15 am
STL
- SJD
2 stops14h 24m
Delta
Wed 9/306:11 am
SJD
- STL
2 stops11h 47m
Delta
Deal found 7/25![Delta logo]()
$457
This Kiwi.com deal was found by Cheapflights users on 7/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/110:20 am
STL
- GDL
1 stop28h 49m
Multiple Airlines
Tue 10/611:51 am
GDL
- STL
2 stops30h 26m
Multiple Airlines
Deal found 7/29![Multiple Airlines logo]()
$468
This Southwest deal was found by Cheapflights users on 7/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/412:00 pm
STL
- CUN
2 stops6h 45m
Southwest
Wed 11/118:20 am
CUN
- STL
2 stops8h 20m
Southwest
Deal found 7/29![Southwest logo]()
$533
This Aeromexico deal was found by Cheapflights users on 7/25. Clicking the “Pick Dates” 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 10/16:00 am
STL
- MEX
2 stops16h 35m
Aeromexico
Sun 10/48:00 pm
MEX
- STL
2 stops18h 54m
Aeromexico
Deal found 7/25![Aeromexico logo]()
$570
This Delta deal was found by Cheapflights users on 7/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 1/206:00 am
STL
- CUN
2 stops13h 00m
Delta
Wed 1/271:40 pm
CUN
- STL
1 stop7h 57m
Delta
Deal found 7/29![Delta logo]()
$485
This Volaris deal was found by Cheapflights users on 7/24. Clicking the “Pick Dates” 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.
Fri 10/236:10 am
STL
- GDL
1 stop9h 23m
Volaris
Sun 10/2511:51 am
GDL
- STL
1 stop12h 26m
Volaris
Deal found 7/24![Volaris logo]()
$588
This Kiwi.com deal was found by Cheapflights users on 7/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/154:57 pm
STL
- MEX
2 stops30h 18m
Multiple Airlines
Mon 8/178:40 am
MEX
- STL
1 stop9h 43m
Multiple Airlines
Deal found 7/24![Multiple Airlines logo]()
$492
This FlightHub deal was found by Cheapflights users on 7/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/128:10 pm
STL
- GDL
1 stop21h 15m
Frontier
Tue 9/158:46 am
GDL
- STL
1 stop25h 46m
Frontier
Deal found 7/27![Frontier logo]()
$599
This American Airlines deal was found by Cheapflights users on 7/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/237:00 am
STL
- BJX
1 stop6h 13m
American Airlines
Fri 10/26:00 am
BJX
- STL
1 stop12h 07m
American Airlines
Deal found 7/28![American Airlines logo]()
$560
This Delta deal was found by Cheapflights users on 7/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/22:31 pm
STL
- CUN
1 stop5h 39m
Delta
Wed 12/93:00 pm
CUN
- STL
1 stop7h 33m
Delta
Deal found 7/27![Delta logo]()
$485
This Southwest deal was found by Cheapflights users on 7/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure 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 25m
Southwest
Deal found 7/27![Southwest logo]()
$587
This Aeromexico deal was found by Cheapflights users on 7/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Aeromexico is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/117:00 am
STL
- PVR
1 stop6h 44m
Aeromexico
Sat 10/176:26 am
PVR
- STL
2 stops16h 28m
Aeromexico
Deal found 7/28![Aeromexico logo]()
$587
This Volaris deal was found by Cheapflights users on 7/26. Clicking the “Pick Dates” 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.
Mon 8/106:34 am
STL
- MEX
1 stop17h 36m
Volaris
Mon 8/178:40 am
MEX
- STL
1 stop9h 43m
Volaris
Deal found 7/26![Volaris logo]()
$603
This Kiwi.com deal was found by Cheapflights users on 7/25. Clicking the “Pick Dates” 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 10/2510:35 am
STL
- QRO
2 stops38h 07m
Multiple Airlines
Sun 11/88:00 am
QRO
- STL
1 stop11h 15m
Multiple Airlines
Deal found 7/25![Multiple Airlines logo]()
$508
This United Airlines deal was found by Cheapflights users on 7/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/188:00 am
STL
- CUN
2 stops11h 19m
United Airlines
Tue 8/255:22 pm
CUN
- STL
2 stops18h 40m
United Airlines
Deal found 7/28![United Airlines logo]()
$573
This American Airlines deal was found by Cheapflights users on 7/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/255:43 am
STL
- PVR
1 stop7h 35m
American Airlines
Wed 9/301:18 pm
PVR
- STL
1 stop9h 25m
American Airlines
Deal found 7/27![American Airlines logo]()
$587
This Aeromexico deal was found by Cheapflights users on 7/24. Clicking the “Pick Dates” 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.
Wed 9/232:30 pm
STL
- BJX
2 stops9h 42m
Aeromexico
Fri 10/212:06 pm
BJX
- STL
2 stops10h 36m
Aeromexico
Deal found 7/24![Aeromexico logo]()
$590
Last-minute flights from St. Louis to MexicoDiscover last-minute flight deals from St. Louis to Mexico. Data last updated July 29, 2026 and is based on user searches.
Discover last-minute flight deals from St. Louis to Mexico. Data last updated July 29, 2026 and is based on user searches.
This Kiwi.com deal was found by Cheapflights users on 7/24. Clicking the “Pick Dates” 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 8/144:57 pm
STL
- MEX
2 stops20h 23m
Multiple Airlines
Sun 8/168:45 pm
MEX
- STL
1 stop16h 38m
Multiple Airlines
Deal found 7/24![Multiple Airlines logo]()
$453
This Kiwi.com deal was found by Cheapflights users on 7/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/153:41 pm
STL
- MEX
1 stop8h 04m
Multiple Airlines
Sun 8/168:45 pm
MEX
- STL
1 stop16h 38m
Multiple Airlines
Deal found 7/24![Multiple Airlines logo]()
$459
This Kiwi.com deal was found by Cheapflights users on 7/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/154:57 pm
STL
- CUN
1 stop20h 56m
Frontier
Sat 8/2910:23 am
CUN
- STL
2 stops30h 59m
Frontier
Deal found 7/27![Frontier logo]()
$472
This Kiwi.com deal was found by Cheapflights users on 7/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/166:34 pm
STL
- MEX
2 stops28h 41m
Multiple Airlines
Mon 8/248:40 am
MEX
- STL
1 stop9h 33m
Multiple Airlines
Deal found 7/25![Multiple Airlines logo]()
$440
This FlightHub deal was found by Cheapflights users on 7/26. Clicking the “Pick Dates” 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.
Sun 8/168:08 pm
STL
- CUN
1 stop16h 41m
Frontier
Sat 8/223:06 pm
CUN
- STL
1 stop26h 16m
Frontier
Deal found 7/26![Frontier logo]()
$470
This American Airlines deal was found by Cheapflights users on 7/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/188:36 am
STL
- CUN
1 stop11h 27m
American Airlines
Tue 8/252:07 pm
CUN
- STL
1 stop8h 33m
American Airlines
Deal found 7/26![American Airlines logo]()
$480
This Kiwi.com deal was found by Cheapflights users on 7/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/246:17 pm
STL
- MEX
2 stops28h 58m
Multiple Airlines
Thu 8/278:40 am
MEX
- STL
1 stop9h 33m
Multiple Airlines
Deal found 7/28![Multiple Airlines logo]()
$403
This FlightHub deal was found by Cheapflights users on 7/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/246:17 pm
STL
- GDL
2 stops23h 36m
Frontier
Mon 8/317:58 am
GDL
- STL
1 stop10h 15m
Frontier
Deal found 7/27![Frontier logo]()
$415
This Kiwi.com deal was found by Cheapflights users on 7/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/255:27 pm
STL
- MEX
1 stop6h 18m
Multiple Airlines
Tue 9/17:00 am
MEX
- STL
1 stop8h 31m
Multiple Airlines
Deal found 7/28![Multiple Airlines logo]()
$405
This FlightHub deal was found by Cheapflights users on 7/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/255:27 pm
STL
- GDL
1 stop21h 42m
Frontier
Tue 9/17:49 pm
GDL
- STL
2 stops44h 33m
Frontier
Deal found 7/27![Frontier logo]()
$413
This Delta deal was found by Cheapflights users on 7/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/266:20 am
STL
- CUN
2 stops12h 24m
Delta
Wed 9/29:20 am
CUN
- STL
2 stops14h 01m
Delta
Deal found 7/29![Delta logo]()
$449
This American Airlines deal was found by Cheapflights users on 7/25. Clicking the “Pick Dates” 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 8/2612:45 pm
STL
- CUN
1 stop7h 18m
American Airlines
Wed 9/21:55 pm
CUN
- STL
1 stop6h 31m
American Airlines
Deal found 7/25![American Airlines logo]()
$454
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 July 29, 2026.
Search for one-way flight options from St. Louis to Mexico. Find affordable one-way fares based on user searches. Data last updated July 29, 2026.
This Kiwi.com deal was found by Cheapflights users on 7/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/15:27 pm
STL
- QRO
1 stop5h 55m
Multiple Airlines
Deal found 7/28![Multiple Airlines logo]()
$136
This Kiwi.com deal was found by Cheapflights users on 7/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/286:17 pm
STL
- QRO
2 stops28h 01m
Multiple Airlines
Deal found 7/27![Multiple Airlines logo]()
$146
This Kiwi.com deal was found by Cheapflights users on 7/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/15:27 pm
STL
- CUN
2 stops24h 03m
Multiple Airlines
Deal found 7/29![Multiple Airlines logo]()
$153
This Kiwi.com deal was found by Cheapflights users on 7/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/36:17 pm
STL
- QRO
2 stops52h 01m
Multiple Airlines
Deal found 7/28![Multiple Airlines logo]()
$156
This Kiwi.com deal was found by Cheapflights users on 7/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/286:17 pm
STL
- MEX
2 stops28h 58m
Multiple Airlines
Deal found 7/27![Multiple Airlines logo]()
$159
This Delta deal was found by Cheapflights users on 7/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 1/256:00 am
STL
- SJD
2 stops17h 30m
Delta
Deal found 7/28![Delta logo]()
$165
This United Airlines deal was found by Cheapflights users on 7/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/266:15 am
STL
- SJD
1 stop6h 15m
United Airlines
Deal found 7/27![United Airlines logo]()
$170
This Delta deal was found by Cheapflights users on 7/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/252:22 pm
STL
- SJD
2 stops25h 03m
Delta
Deal found 7/29![Delta logo]()
$171
This Kiwi.com deal was found by Cheapflights users on 7/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/174:57 pm
STL
- MEX
2 stops30h 18m
Multiple Airlines
Deal found 7/26![Multiple Airlines logo]()
$171
This Kiwi.com deal was found by Cheapflights users on 7/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/246:17 pm
STL
- CUN
3 stops41h 02m
Multiple Airlines
Deal found 7/27![Multiple Airlines logo]()
$173
This Kiwi.com deal was found by Cheapflights users on 7/25. Clicking the “Pick Dates” 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 9/2410:20 am
STL
- CUN
2 stops24h 59m
Multiple Airlines
Deal found 7/25![Multiple Airlines logo]()
$174
This American Airlines deal was found by Cheapflights users on 7/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/2710:16 am
STL
- SJD
1 stop25h 31m
American Airlines
Deal found 7/28![American Airlines logo]()
$178
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 July 29, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $374 (Delta) |
One-way from | $136 (Kiwi.com) |
Popular in | December |
Cheapest in | April |
Average price | $716 |
Good round-trip deal | $542 or less |
Good one-way deal | $270 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 July 29, 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
Sat 10/17
7:00 am-5:35 pm
2 stops12h 35m
San José del Cabo Los Cabos
Wed 10/21
9:15 am-11:54 pm
2 stops12h 39m
$374
St. LouisSan José del Cabo
STL - SJD
STLSJD
Lambert-St Louis
Mon 10/26
5:00 am-12:03 pm
1 stop9h 03m
San José del Cabo Los Cabos
Sat 10/31
1:11 pm-10:26 pm
1 stop7h 15m
$374
Quickest round-trip
St. LouisSan José del Cabo
STL - SJD
STLSJD
Lambert-St Louis
Tue 9/15
6:00 am-10:45 am
1 stop6h 45m
San José del Cabo Los Cabos
Fri 9/18
1:45 pm-9:55 pm
1 stop6h 10m
$374
St. LouisSan José del Cabo
STL - SJD
STLSJD
Lambert-St Louis
Sat 10/17
6:32 am-2:22 pm
1 stop9h 50m
San José del Cabo Los Cabos
Wed 10/21
11:57 am-11:42 pm
2 stops9h 45m
$378
St. LouisSan José del Cabo
STL - SJD
STLSJD
Lambert-St Louis
Tue 9/15
6:15 am-10:30 am
1 stop6h 15m
San José del Cabo Los Cabos
Fri 9/18
1:44 pm-12:03 pm
2 stops20h 19m
$378
St. LouisSan José del Cabo
STL - SJD
STLSJD
Lambert-St Louis
Mon 8/24
6:36 am-1:22 pm
1 stop8h 46m
San José del Cabo Los Cabos
Mon 8/31
1:13 pm-9:24 am
2 stops18h 11m
$378
St. LouisSan José del Cabo
STL - SJD
STLSJD
Lambert-St Louis
Sun 9/6
6:00 am-5:35 pm
2 stops13h 35m
San José del Cabo Los Cabos
Thu 9/10
12:12 pm-11:42 pm
1 stop9h 30m
$393
St. LouisSan José del Cabo
STL - SJD
STLSJD
Lambert-St Louis
Sun 8/30
5:10 am-12:05 pm
1 stop8h 55m
San José del Cabo Los Cabos
Fri 9/4
1:17 pm-11:40 pm
1 stop8h 23m
$393
St. LouisMexico City
STL - MEX
STLMEX
Lambert-St Louis
Tue 9/8
5:27 pm-10:45 pm
1 stop6h 18m
Mexico City Benito Juarez
Tue 9/15
6:20 am-1:10 pm
2 stops29h 50m
$424
St. LouisMexico City
STL - MEX
STLMEX
Lambert-St Louis
Tue 8/25
5:27 pm-8:00 pm
2 stops27h 33m
Mexico City Benito Juarez
Tue 9/1
7:00 am-4:31 pm
1 stop8h 31m
$436
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-QRO
STL-CUN
STL-MEX
STL-SJD
STL-GDL
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-QRO
STL-CUN
STL-MEX
STL-SJD
What is the cheapest month to book a flight from St. Louis to Mexico?
Currently, September is the cheapest month in which you can book a flight from St. Louis to Mexico (average of $449). Flying from St. Louis to Mexico in June is currently the most expensive (average of $624). 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 July 29, 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 July 29, 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
8.0
Boarding
8.1
Comfort
8.0
Food
7.0
Crew
8.6
Reviews
1 / 20
6.0
GoodLauren,Dec 2024
MCI - DCA
Entertainment
7.5
Overall
8.0
Boarding
8.1
Comfort
8.0
Food
7.0
Crew
8.6
Reviews
1 / 20
6.0
GoodLauren,Dec 2024
MCI - DCA
Entertainment
7.5
Overall
8.0
Boarding
8.1
Comfort
8.0
Food
7.0
Crew
8.6
Reviews
1 / 20
6.0
GoodLauren,Dec 2024
MCI - DCA
Entertainment
7.5
Overall
8.0
Boarding
8.1
Comfort
8.0
Food
7.0
Crew
8.6
Reviews
1 / 20
6.0
GoodLauren,Dec 2024
MCI - DCA
Entertainment
7.5
Overall
8.0
Boarding
8.1
Comfort
8.0
Food
7.0
Crew
8.6
Reviews
1 / 20
6.0
GoodLauren,Dec 2024
MCI - DCA
Entertainment
7.5
Overall
8.0
Boarding
8.1
Comfort
8.0
Food
7.0
Crew
8.6
Reviews
1 / 20
6.0
GoodLauren,Dec 2024
MCI - DCA
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 July 29, 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 July 29, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$168 | Average$462 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$179 | Average$598 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$187 | Average$380 | FlexibilityNo cancel fee | On-time79% | |
| Cheapest$195 | Average$550 | FlexibilityNo cancel fee | On-time67% | |
| Cheapest$225 | Average$429 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$278 | Average$639 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$398 | Average$679 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$404 | Average$545 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$453 | Average$659 | FlexibilityNo cancel fee | On-time63% | |
| Cheapest$527 | Average$597 | FlexibilityNo cancel fee | On-time75% |