$189+ Cheap flights from Mexico to St. Louis (STL)
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 8/6. Fares are subject to change and may not be available on all flights or dates of travel.
MEX — STL
Jul 17 — Jul 241
Round-trip
1 adult, Economy
We work with more than 300 partners to bring you better travel deals
Find cheap flights from Mexico to St. Louis with Cheapflights
1. Tell us where you want to go
Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”2. Select your favorite providers
We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.3. Compare prices and book
Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.Cheap flight deals from Mexico to St. Louis
Cheapest
Best
Last-minute
One-way
Cheapest flights from Mexico to St. LouisExplore the most affordable flight options available from Mexico to St. Louis. Find the lowest fares from popular airlines and budget airlines, with prices last updated on June 17, 2026.
Explore the most affordable flight options available from Mexico to St. Louis. Find the lowest fares from popular airlines and budget airlines, with prices last updated on June 17, 2026.
This Expedia 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/288:45 pm
MEX
- STL
1 stop16h 38m
Frontier
Tue 8/43:41 pm
STL
- MEX
1 stop8h 04m
Frontier
Deal found 6/13![Frontier logo]()
$305
This Frontier 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/18:40 am
MEX
- STL
1 stop9h 43m
Frontier
Wed 9/23:33 pm
STL
- MEX
1 stop8h 12m
Frontier
Deal found 6/12![Frontier logo]()
$313
This Frontier 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/258:40 am
MEX
- STL
1 stop9h 43m
Frontier
Wed 8/263:33 pm
STL
- MEX
1 stop8h 12m
Frontier
Deal found 6/15![Frontier logo]()
$314
This CheapOair 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/231:59 pm
CUN
- STL
2 stops42h 58m
Frontier
Sun 7/266:34 am
STL
- CUN
Nonstop3h 16m
Frontier
Deal found 6/12![Frontier logo]()
$369
This Mytrip 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/78:45 pm
MEX
- STL
1 stop16h 38m
Frontier
Tue 7/147:03 pm
STL
- MEX
1 stop27h 42m
Frontier
Deal found 6/13![Frontier logo]()
$377
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.
Wed 7/2912:35 pm
CUN
- STL
2 stops11h 18m
Delta
Wed 8/56:30 am
STL
- CUN
1 stop6h 31m
Delta
Deal found 6/14![Delta logo]()
$397
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.
Thu 7/235:22 pm
CUN
- STL
2 stops15h 17m
United Airlines
Sun 7/266:00 am
STL
- CUN
1 stop8h 26m
United Airlines
Deal found 6/12![United Airlines logo]()
$408
This United Airlines 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 7/317:51 am
CUN
- STL
1 stop14h 54m
United Airlines
Tue 8/46:14 am
STL
- CUN
1 stop5h 48m
United Airlines
Deal found 6/13![United Airlines logo]()
$411
This eDestinos deal was found by Cheapflights users on 6/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure eDestinos is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/18:45 pm
MEX
- STL
1 stop16h 52m
Volaris
Fri 7/176:34 am
STL
- MEX
1 stop11h 06m
Volaris
Deal found 6/16![Volaris logo]()
$432
This eDestinos 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 eDestinos is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 6/298:45 pm
MEX
- STL
1 stop16h 52m
Volaris
Thu 7/26:30 am
STL
- MEX
1 stop11h 10m
Volaris
Deal found 6/14![Volaris logo]()
$435
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 7/56:00 am
MTY
- STL
2 stops35h 15m
Multiple Airlines
Sun 7/127:10 pm
STL
- MTY
1 stop25h 10m
Multiple Airlines
Deal found 6/15![Multiple Airlines logo]()
$437
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.
Thu 7/233:20 pm
CUN
- STL
Nonstop3h 05m
Southwest
Sun 7/2610:55 am
STL
- CUN
Nonstop3h 05m
Southwest
Deal found 6/12![Southwest logo]()
$444
Best flights from Mexico to St. LouisDiscover carefully curated flight deals from Mexico to St. Louis that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated June 17, 2026.
Discover carefully curated flight deals from Mexico to St. Louis that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated June 17, 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.
Wed 7/2912:35 pm
CUN
- STL
1 stop8h 02m
Delta
Wed 8/56:30 am
STL
- CUN
1 stop6h 31m
Delta
Deal found 6/14![Delta logo]()
$397
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.
Thu 7/235:22 pm
CUN
- STL
2 stops15h 17m
United Airlines
Sun 7/266:00 am
STL
- CUN
1 stop8h 26m
United Airlines
Deal found 6/12![United Airlines logo]()
$408
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.
Thu 7/233:20 pm
CUN
- STL
Nonstop3h 05m
Southwest
Sun 7/2610:55 am
STL
- CUN
Nonstop3h 05m
Southwest
Deal found 6/12![Southwest logo]()
$444
This Kiwi.com 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/286:20 am
MEX
- STL
2 stops25h 37m
Multiple Airlines
Tue 8/43:41 pm
STL
- MEX
1 stop8h 04m
Multiple Airlines
Deal found 6/13![Multiple Airlines logo]()
$456
This Volaris deal was found by Cheapflights users on 6/16. Clicking the “Pick Dates” 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.
Thu 8/68:40 am
MEX
- STL
1 stop9h 43m
Volaris
Mon 8/106:34 am
STL
- MEX
1 stop11h 06m
Volaris
Deal found 6/16![Volaris logo]()
$471
This Frontier 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/233:31 pm
CUN
- STL
2 stops17h 26m
Frontier
Sun 7/263:41 pm
STL
- CUN
2 stops17h 26m
Frontier
Deal found 6/12![Frontier logo]()
$486
This Aeromexico 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 Aeromexico is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/271:39 pm
PVR
- STL
1 stop9h 19m
Aeromexico
Mon 8/313:39 pm
STL
- PVR
2 stops19h 47m
Aeromexico
Deal found 6/13![Aeromexico logo]()
$495
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.
Fri 7/317:51 am
CUN
- STL
1 stop14h 54m
United Airlines
Tue 8/46:14 am
STL
- CUN
1 stop5h 48m
United Airlines
Deal found 6/14![United Airlines logo]()
$412
This eDestinos 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 eDestinos is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 7/411:05 am
MEX
- STL
1 stop11h 44m
Volaris
Fri 7/176:34 am
STL
- MEX
1 stop11h 06m
Volaris
Deal found 6/14![Volaris logo]()
$471
This Volaris 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 Volaris is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/17:00 am
MEX
- STL
1 stop10h 18m
Volaris
Fri 7/176:34 am
STL
- MEX
1 stop17h 36m
Volaris
Deal found 6/12![Volaris logo]()
$471
This Aeromexico 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 Aeromexico is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/19:30 am
MEX
- STL
2 stops12h 51m
Aeromexico
Wed 9/26:00 am
STL
- MEX
2 stops10h 40m
Aeromexico
Deal found 6/13![Aeromexico logo]()
$535
This Delta 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/66:45 am
MEX
- STL
2 stops12h 57m
Delta
Mon 8/1011:00 am
STL
- MEX
1 stop11h 50m
Delta
Deal found 6/15![Delta logo]()
$535
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.
Thu 8/2712:19 pm
PVR
- STL
2 stops26h 19m
United Airlines
Mon 8/316:54 pm
STL
- PVR
2 stops17h 16m
United Airlines
Deal found 6/12![United Airlines logo]()
$495
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.
Wed 11/118:20 am
MEX
- STL
2 stops12h 29m
Delta
Thu 12/317:20 am
STL
- MEX
1 stop13h 25m
Delta
Deal found 6/13![Delta logo]()
$535
This Aeromexico 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 Aeromexico is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/258:10 am
MEX
- STL
2 stops14h 11m
Aeromexico
Wed 8/266:00 am
STL
- MEX
2 stops13h 05m
Aeromexico
Deal found 6/15![Aeromexico logo]()
$536
This United Airlines deal was found by Cheapflights users on 6/16. Clicking the “Pick Dates” 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 8/316:50 am
MLM
- STL
2 stops25h 49m
United Airlines
Wed 9/211:15 am
STL
- MLM
1 stop7h 58m
United Airlines
Deal found 6/16![United Airlines logo]()
$495
This Aeromexico 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 Aeromexico is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/306:03 am
PVR
- STL
2 stops10h 37m
Aeromexico
Thu 10/17:05 am
STL
- PVR
1 stop6h 06m
Aeromexico
Deal found 6/15![Aeromexico logo]()
$543
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.
Wed 8/266:50 am
MLM
- STL
2 stops14h 10m
United Airlines
Sun 8/306:54 pm
STL
- MLM
2 stops24h 19m
United Airlines
Deal found 6/12![United Airlines logo]()
$499
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.
Wed 10/218:42 am
MTY
- STL
2 stops13h 57m
Delta
Sun 10/257:20 am
STL
- MTY
1 stop11h 00m
Delta
Deal found 6/12![Delta logo]()
$611
This United Airlines deal was found by Cheapflights users on 6/16. Clicking the “Pick Dates” 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 9/23:52 pm
CZM
- STL
1 stop22h 23m
United Airlines
Sun 9/64:40 pm
STL
- CZM
2 stops22h 02m
United Airlines
Deal found 6/16![United Airlines logo]()
$531
This Aeromexico 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 Aeromexico is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/17:45 am
MTY
- STL
2 stops14h 36m
Aeromexico
Wed 9/26:00 am
STL
- MTY
1 stop6h 05m
Aeromexico
Deal found 6/12![Aeromexico logo]()
$592
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.
Tue 8/253:52 pm
CZM
- STL
1 stop18h 18m
United Airlines
Sat 8/2912:59 pm
STL
- CZM
2 stops25h 43m
United Airlines
Deal found 6/14![United Airlines logo]()
$535
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.
Mon 7/276:50 am
MLM
- STL
2 stops24h 49m
United Airlines
Mon 8/36:14 am
STL
- MLM
1 stop12h 59m
United Airlines
Deal found 6/12![United Airlines logo]()
$536
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.
Wed 7/296:50 am
MLM
- STL
3 stops28h 21m
United Airlines
Wed 8/51:13 pm
STL
- MLM
2 stops30h 00m
United Airlines
Deal found 6/14![United Airlines logo]()
$540
This United Airlines deal was found by Cheapflights users on 6/16. Clicking the “Pick Dates” 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 8/315:00 am
BJX
- STL
2 stops16h 00m
United Airlines
Wed 9/211:15 am
STL
- BJX
1 stop9h 16m
United Airlines
Deal found 6/16![United Airlines logo]()
$552
This United Airlines deal was found by Cheapflights users on 6/16. Clicking the “Pick Dates” 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 8/3112:25 pm
MTY
- STL
1 stop8h 35m
United Airlines
Wed 9/28:35 am
STL
- MTY
1 stop11h 55m
United Airlines
Deal found 6/16![United Airlines logo]()
$587
This United Airlines deal was found by Cheapflights users on 6/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/2812:55 pm
AGU
- STL
2 stops19h 44m
United Airlines
Tue 9/13:13 pm
STL
- AGU
1 stop5h 14m
United Airlines
Deal found 6/16![United Airlines logo]()
$591
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.
Thu 12/36:30 am
MTY
- STL
2 stops14h 29m
United Airlines
Mon 12/74:17 pm
STL
- MTY
1 stop5h 28m
United Airlines
Deal found 6/12![United Airlines logo]()
$592
This United 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/2110:00 am
MTY
- STL
1 stop11h 30m
United Airlines
Sun 10/256:15 am
STL
- MTY
1 stop27h 25m
United Airlines
Deal found 6/15![United Airlines logo]()
$592
This United Airlines deal was found by Cheapflights users on 6/16. Clicking the “Pick Dates” 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 7/292:50 pm
BJX
- STL
2 stops31h 54m
United Airlines
Wed 10/284:30 pm
STL
- BJX
2 stops19h 24m
United Airlines
Deal found 6/16![United Airlines logo]()
$758
Last-minute flights from Mexico to St. LouisDiscover last-minute flight deals from Mexico to St. Louis. Data last updated June 17, 2026 and is based on user searches.
Discover last-minute flight deals from Mexico to St. Louis. Data last updated June 17, 2026 and is based on user searches.
This eDestinos 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 eDestinos is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 6/298:45 pm
MEX
- STL
1 stop16h 52m
Volaris
Thu 7/26:30 am
STL
- MEX
1 stop11h 10m
Volaris
Deal found 6/14![Volaris logo]()
$435
This eDestinos deal was found by Cheapflights users on 6/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure eDestinos is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/18:45 pm
MEX
- STL
1 stop16h 52m
Volaris
Fri 7/176:34 am
STL
- MEX
1 stop11h 06m
Volaris
Deal found 6/16![Volaris logo]()
$432
This eDestinos deal was found by Cheapflights users on 6/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure eDestinos is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 7/411:05 am
MEX
- STL
1 stop11h 44m
Volaris
Fri 7/176:34 am
STL
- MEX
1 stop11h 06m
Volaris
Deal found 6/16![Volaris logo]()
$452
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 7/56:00 am
MTY
- STL
2 stops35h 15m
Multiple Airlines
Sun 7/127:10 pm
STL
- MTY
1 stop25h 10m
Multiple Airlines
Deal found 6/15![Multiple Airlines logo]()
$437
This Mytrip 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/78:45 pm
MEX
- STL
1 stop16h 38m
Frontier
Tue 7/147:03 pm
STL
- MEX
1 stop27h 42m
Frontier
Deal found 6/13![Frontier logo]()
$377
This Kiwi.com 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/711:00 am
MEX
- STL
1 stop30h 05m
Multiple Airlines
Tue 7/148:08 pm
STL
- MEX
2 stops24h 52m
Multiple Airlines
Deal found 6/13![Multiple Airlines logo]()
$444
This CheapOair 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/231:59 pm
CUN
- STL
2 stops42h 58m
Frontier
Sun 7/266:34 am
STL
- CUN
Nonstop3h 16m
Frontier
Deal found 6/12![Frontier logo]()
$369
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.
Thu 7/235:22 pm
CUN
- STL
2 stops15h 17m
United Airlines
Sun 7/266:00 am
STL
- CUN
1 stop8h 26m
United Airlines
Deal found 6/12![United Airlines logo]()
$408
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.
Thu 7/233:20 pm
CUN
- STL
Nonstop3h 05m
Southwest
Sun 7/2610:55 am
STL
- CUN
Nonstop3h 05m
Southwest
Deal found 6/12![Southwest logo]()
$444
This Expedia 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/288:45 pm
MEX
- STL
1 stop16h 38m
Frontier
Tue 8/43:41 pm
STL
- MEX
1 stop8h 04m
Frontier
Deal found 6/13![Frontier logo]()
$305
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.
Wed 7/2912:35 pm
CUN
- STL
2 stops11h 18m
Delta
Wed 8/56:30 am
STL
- CUN
1 stop6h 31m
Delta
Deal found 6/14![Delta logo]()
$397
This United Airlines 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 7/317:51 am
CUN
- STL
1 stop14h 54m
United Airlines
Tue 8/46:14 am
STL
- CUN
1 stop5h 48m
United Airlines
Deal found 6/13![United Airlines logo]()
$411
One-way flights from Mexico to St. LouisSearch for one-way flight options from Mexico to St. Louis. Find affordable one-way fares based on user searches. Data last updated June 17, 2026.
Search for one-way flight options from Mexico to St. Louis. Find affordable one-way fares based on user searches. Data last updated June 17, 2026.
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.
Thu 8/67:51 am
CUN
- STL
2 stops15h 53m
United Airlines
Deal found 6/12![United Airlines logo]()
$189
This eDestinos deal was found by Cheapflights users on 6/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure eDestinos is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 7/248:45 pm
MEX
- STL
1 stop16h 38m
Volaris
Deal found 6/16![Volaris logo]()
$199
This Kiwi.com deal was found by Cheapflights users on 6/16. Clicking the “Pick Dates” 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 8/113:31 pm
CUN
- STL
1 stop27h 52m
Frontier
Deal found 6/16![Frontier logo]()
$209
This Volaris deal was found by Cheapflights users on 6/16. Clicking the “Pick Dates” 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 7/138:45 pm
MEX
- STL
1 stop16h 38m
Volaris
Deal found 6/16![Volaris logo]()
$215
This Kiwi.com deal was found by Cheapflights users on 6/16. Clicking the “Pick Dates” 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 7/153:31 pm
CUN
- STL
1 stop27h 52m
Frontier
Deal found 6/16![Frontier logo]()
$219
This Super.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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/123:31 pm
CUN
- STL
1 stop27h 52m
Frontier
Deal found 6/15![Frontier logo]()
$221
This FlightHub deal was found by Cheapflights users on 6/16. Clicking the “Pick Dates” 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 6/238:45 pm
MEX
- STL
1 stop16h 52m
Volaris
Deal found 6/16![Volaris logo]()
$221
This Kiwi.com deal was found by Cheapflights users on 6/16. Clicking the “Pick Dates” 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 7/143:31 pm
CUN
- STL
1 stop27h 52m
Frontier
Deal found 6/16![Frontier logo]()
$222
This Expedia deal was found by Cheapflights users on 6/16. Clicking the “Pick Dates” 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.
Wed 7/223:31 pm
CUN
- STL
1 stop27h 52m
Frontier
Deal found 6/16![Frontier logo]()
$224
This Southwest 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 7/103:20 pm
CUN
- STL
Nonstop3h 05m
Southwest
Deal found 6/14![Southwest logo]()
$229
This Southwest 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/1612:40 pm
CUN
- STL
Nonstop3h 10m
Southwest
Deal found 6/15![Southwest logo]()
$234
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.
Tue 7/78:00 am
CUN
- STL
1 stop9h 53m
Delta
Deal found 6/12![Delta logo]()
$235
Find flight deals from Mexico to St. Louis
Keep the following information in mind while searching for Mexico to St. Louis flight deals. Data was last updated June 17, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $305 (Expedia) |
One-way from | $189 (United Airlines) |
Popular in | April |
Cheapest in | May |
Average price | $676 |
Good round-trip deal | $674 or less |
Good one-way deal | $260 or less |
Cheapflights Fare Finder
Customize your flight search to find flights from Mexico to St. Louis 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 17, 2026.
Use the filters below to find and compare flights from Mexico to St. Louis that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
CancúnSt. Louis
CUN - STL
CUNSTL
Cancun
Wed 7/29
12:35 pm-8:37 pm
1 stop8h 02m
Lambert-St Louis
Wed 8/5
6:30 am-1:01 pm
1 stop6h 31m
$397
CancúnSt. Louis
CUN - STL
CUNSTL
Cancun
Thu 7/23
5:22 pm-8:39 am
2 stops15h 17m
Lambert-St Louis
Sun 7/26
6:00 am-2:26 pm
1 stop8h 26m
$408
CancúnSt. Louis
CUN - STL
CUNSTL
Cancun
Fri 7/31
7:51 am-10:45 pm
1 stop14h 54m
Lambert-St Louis
Tue 8/4
6:14 am-12:02 pm
1 stop5h 48m
$412
Quickest round-trip
CancúnSt. Louis
CUN - STL
CUNSTL
Cancun
Thu 7/23
3:20 pm-6:25 pm
Nonstop3h 05m
Lambert-St Louis
Sun 7/26
10:55 am-2:00 pm
Nonstop3h 05m
$444
Mexico CitySt. Louis
MEX - STL
MEXSTL
Mexico City Benito Juarez
Tue 7/28
6:20 am-8:57 am
2 stops25h 37m
Lambert-St Louis
Tue 8/4
3:41 pm-10:45 pm
1 stop8h 04m
$456
Mexico CitySt. Louis
MEX - STL
MEXSTL
Mexico City Benito Juarez
Thu 8/6
8:40 am-7:23 pm
1 stop9h 43m
Lambert-St Louis
Mon 8/10
6:34 am-4:40 pm
1 stop11h 06m
$471
Mexico CitySt. Louis
MEX - STL
MEXSTL
Mexico City Benito Juarez
Sat 7/4
11:05 am-11:49 pm
1 stop11h 44m
Lambert-St Louis
Fri 7/17
6:34 am-4:40 pm
1 stop11h 06m
$471
Mexico CitySt. Louis
MEX - STL
MEXSTL
Mexico City Benito Juarez
Wed 7/1
7:00 am-6:18 pm
1 stop10h 18m
Lambert-St Louis
Fri 7/17
6:34 am-11:10 pm
1 stop17h 36m
$471
CancúnSt. Louis
CUN - STL
CUNSTL
Cancun
Thu 7/23
3:31 pm-8:57 am
2 stops17h 26m
Lambert-St Louis
Sun 7/26
3:41 pm-9:07 am
2 stops17h 26m
$486
Puerto VallartaSt. Louis
PVR - STL
PVRSTL
Puerto Vallarta Ordaz
Thu 8/27
1:39 pm-11:58 pm
1 stop9h 19m
Lambert-St Louis
Mon 8/31
3:39 pm-10:26 am
2 stops19h 47m
$495
Showing 1-10 of 60 resultsSorted by cheapest first
Best time to book a flight from Mexico to St. Louis
Have a flexible travel schedule? Discover the best time to fly to St. Louis from Mexico with our price prediction graph.
MEX-STL
CUN-STL
MTY-STL
CZM-STL
PVR-STL
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 Mexico to St. Louis
MX0-STL
MEX-STL
CUN-STL
MTY-STL
CZM-STL
What is the cheapest month to book a flight from Mexico to St. Louis?
Currently, September is the cheapest month in which you can book a flight from Mexico to St. Louis (average of $200). Flying from Mexico to St. Louis in October is currently the most expensive (average of $506). 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 MX to STL?
Find hourly flight availability from Mexico to St. Louis. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated June 17, 2026.
When flying from Mexico to St. Louis, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.
Reviews of airlines servicing St. Louis
Get insights into the airlines that provide service to St. Louis. 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 St. Louis. Reviews last updated June 17, 2026.
See what other customers who have flown with Delta and United Airlines from Mexico to St. Louis have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Entertainment
7.8
Boarding
8.1
Food
7.2
Overall
7.9
Crew
8.5
Comfort
7.8
Reviews
1 / 20
8.0
ExcellentRakshith,May 2026
TPE - SEA
Entertainment
7.8
Boarding
8.1
Food
7.2
Overall
7.9
Crew
8.5
Comfort
7.8
Reviews
1 / 20
8.0
ExcellentRakshith,May 2026
TPE - SEA
Entertainment
7.8
Boarding
8.1
Food
7.2
Overall
7.9
Crew
8.5
Comfort
7.8
Reviews
1 / 20
8.0
ExcellentRakshith,May 2026
TPE - SEA
Related info for your journey
Find useful and relevant information for your journey from Mexico to St. Louis. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
Traveling to a place near St. Louis?
Book flights to St. Louis if you plan to visit one of these locationsEdwardsville
O'Fallon
Fenton
Swansea
Fairview Heights
Eureka
Maryland Heights
Collinsville
Wentzville
Glencoe
Chesterfield
Alton
Farmington
Browse thousands of different options on Cheapflights for your next trip
Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.
Alternative routes
Complete your trip
Flights by cabin class
Other flight options
Popular flights
St. Louis flight routes
Top destinations
Alternative routes for Mexico to St. Louis
See prices for flight routes from nearby airports that may be better suited for you.
Complete your trip
Complete your trip to St. Louis by adding a car rental and/or hotel reservation to your travel itinerary.
Search flights from Mexico to St. Louis by cabin class
Find flights from Mexico to St. Louis, based on your preferred cabin class, be it economy, premium economy, business, or first class.
Mexico and St. Louis flights
Browse other Mexico and St. Louis flight options. Last updated on June 17, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
Other flights to St. Louis
Explore flights to St. Louis departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on June 17, 2026.
Mexico to St. Louis flights
Consider these flights traveling from Mexico to St. Louis.
Top 2 airlines flying from Mexico to St. Louis
Discover the top 2 airlines that operate flights from Mexico to St. Louis. 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 17, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$466 | Average$626 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$521 | Average$676 | FlexibilityNo cancel fee | On-timeN/A |