$160+ 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 4/9. Fares are subject to change and may not be available on all flights or dates of travel.
MEX — STL
Apr 14 — Apr 211
Round-trip
1 adult, Economy
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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
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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
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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 March 15, 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 March 15, 2026.
This Frontier deal was found by Cheapflights users on 3/12. 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 4/1611:48 am
CUN
- STL
Nonstop3h 31m
Frontier
Mon 4/206:00 am
STL
- CUN
Nonstop3h 17m
Frontier
Deal found 3/12![Frontier logo]()
$244
This Flightnetwork deal was found by Cheapflights users on 3/13. 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 Flightnetwork is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/294:07 pm
CUN
- STL
1 stop18h 19m
Frontier
Wed 5/136:00 am
STL
- CUN
Nonstop3h 15m
Frontier
Deal found 3/13![Frontier logo]()
$298
This United Airlines deal was found by Cheapflights users on 3/12. 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 4/163:24 pm
CUN
- STL
1 stop7h 04m
United Airlines
Mon 4/207:45 am
STL
- CUN
1 stop6h 41m
United Airlines
Deal found 3/12![United Airlines logo]()
$304
This Aeromexico deal was found by Cheapflights users on 3/13. 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.
Wed 4/299:12 am
CUN
- STL
2 stops14h 24m
Aeromexico
Wed 5/1310:49 am
STL
- CUN
2 stops12h 56m
Aeromexico
Deal found 3/13![Aeromexico logo]()
$305
This Aeromexico deal was found by Cheapflights users on 3/14. 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 4/168:00 am
CUN
- STL
1 stop15h 36m
Aeromexico
Mon 4/206:00 am
STL
- CUN
1 stop6h 40m
Aeromexico
Deal found 3/14![Aeromexico logo]()
$306
This Delta deal was found by Cheapflights users on 3/10. 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.
Wed 5/611:22 am
CUN
- STL
2 stops11h 51m
Delta
Sun 5/107:15 am
STL
- CUN
1 stop5h 25m
Delta
Deal found 3/10![Delta logo]()
$307
This Flightnetwork deal was found by Cheapflights users on 3/11. 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 Flightnetwork is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/14:06 pm
CUN
- STL
1 stop25h 28m
Frontier
Thu 4/3011:21 am
STL
- CUN
1 stop27h 35m
Frontier
Deal found 3/11![Frontier logo]()
$322
This Gotogate deal was found by Cheapflights users on 3/14. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/284:10 pm
MEX
- STL
2 stops41h 16m
Frontier
Tue 5/56:51 pm
STL
- MEX
1 stop27h 54m
Frontier
Deal found 3/14![Frontier logo]()
$349
This Frontier deal was found by Cheapflights users on 3/12. 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 4/168:40 am
MEX
- STL
1 stop9h 41m
Frontier
Mon 4/203:21 pm
STL
- MEX
1 stop8h 24m
Frontier
Deal found 3/12![Frontier logo]()
$363
This Mytrip deal was found by Cheapflights users on 3/12. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/168:40 am
MEX
- STL
1 stop9h 41m
Frontier
Thu 4/238:06 pm
STL
- MEX
2 stops51h 39m
Frontier
Deal found 3/12![Frontier logo]()
$381
This Kiwi.com deal was found by Cheapflights users on 3/10. 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 4/2410:45 pm
MEX
- STL
2 stops19h 47m
Multiple Airlines
Fri 5/17:01 pm
STL
- MEX
1 stop28h 44m
Multiple Airlines
Deal found 3/10![Multiple Airlines logo]()
$386
This Kiwi.com deal was found by Cheapflights users on 3/10. 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.
Tue 4/216:20 am
MEX
- STL
2 stops23h 30m
Multiple Airlines
Thu 4/308:06 pm
STL
- MEX
1 stop22h 24m
Multiple Airlines
Deal found 3/10![Multiple Airlines logo]()
$393
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 March 15, 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 March 15, 2026.
This Frontier deal was found by Cheapflights users on 3/13. 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.
Wed 4/2911:48 am
CUN
- STL
Nonstop3h 31m
Frontier
Wed 5/136:00 am
STL
- CUN
Nonstop3h 15m
Frontier
Deal found 3/13![Frontier logo]()
$265
This United Airlines deal was found by Cheapflights users on 3/12. 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 4/163:24 pm
CUN
- STL
1 stop7h 04m
United Airlines
Mon 4/207:45 am
STL
- CUN
1 stop6h 41m
United Airlines
Deal found 3/12![United Airlines logo]()
$304
This Delta deal was found by Cheapflights users on 3/10. 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.
Wed 5/611:22 am
CUN
- STL
2 stops11h 51m
Delta
Sun 5/107:15 am
STL
- CUN
1 stop5h 25m
Delta
Deal found 3/10![Delta logo]()
$307
This Air Canada deal was found by Cheapflights users on 3/12. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/29:05 pm
CUN
- STL
1 stop16h 57m
Air Canada
Fri 9/1112:10 pm
STL
- CUN
1 stop8h 20m
Air Canada
Deal found 3/12![Air Canada logo]()
$418
This Aeromexico deal was found by Cheapflights users on 3/12. 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.
Thu 4/239:02 am
PVR
- STL
2 stops13h 34m
Aeromexico
Sat 4/251:03 pm
STL
- PVR
2 stops10h 37m
Aeromexico
Deal found 3/12![Aeromexico logo]()
$475
This eDestinos deal was found by Cheapflights users on 3/11. 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 eDestinos is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 4/268:05 am
MTY
- STL
2 stops30h 14m
Multiple Airlines
Sun 5/38:06 pm
STL
- MTY
2 stops26h 14m
Multiple Airlines
Deal found 3/11![Multiple Airlines logo]()
$565
This American Airlines deal was found by Cheapflights users on 3/12. 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.
Wed 7/2910:54 am
BJX
- STL
1 stop20h 53m
American Airlines
Wed 10/284:16 pm
STL
- BJX
1 stop18h 22m
American Airlines
Deal found 3/12![American Airlines logo]()
$622
This Kiwi.com deal was found by Cheapflights users on 3/11. 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.
Fri 5/111:48 am
CUN
- STL
Nonstop3h 31m
Frontier
Mon 5/46:00 am
STL
- CUN
Nonstop3h 17m
Frontier
Deal found 3/11![Frontier logo]()
$324
This United Airlines deal was found by Cheapflights users on 3/10. 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 4/17:51 am
CUN
- STL
2 stops13h 03m
United Airlines
Thu 4/306:00 am
STL
- CUN
1 stop13h 19m
United Airlines
Deal found 3/10![United Airlines logo]()
$354
This Gotogate deal was found by Cheapflights users on 3/13. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 5/173:22 pm
CUN
- STL
1 stop17h 33m
Frontier
Wed 5/206:00 am
STL
- CUN
Nonstop3h 15m
Frontier
Deal found 3/13![Frontier logo]()
$325
This Frontier deal was found by Cheapflights users on 3/12. 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 4/168:40 am
MEX
- STL
1 stop9h 41m
Frontier
Mon 4/203:21 pm
STL
- MEX
1 stop8h 24m
Frontier
Deal found 3/12![Frontier logo]()
$363
This United Airlines deal was found by Cheapflights users on 3/12. 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 4/2312:19 pm
PVR
- STL
1 stop19h 06m
United Airlines
Sat 4/254:49 pm
STL
- PVR
1 stop19h 21m
United Airlines
Deal found 3/12![United Airlines logo]()
$429
This Booking.com deal was found by Cheapflights users on 3/13. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 5/37:55 am
MEX
- STL
2 stops34h 37m
Frontier
Sun 5/103:33 pm
STL
- MEX
1 stop8h 12m
Frontier
Deal found 3/13![Frontier logo]()
$425
This United Airlines deal was found by Cheapflights users on 3/12. 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 4/233:52 pm
CZM
- STL
1 stop5h 36m
United Airlines
Sun 4/266:00 am
STL
- CZM
1 stop9h 42m
United Airlines
Deal found 3/12![United Airlines logo]()
$482
This United Airlines deal was found by Cheapflights users on 3/10. 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.
Sat 4/251:18 pm
PVR
- STL
2 stops18h 07m
United Airlines
Sat 5/25:28 pm
STL
- PVR
2 stops18h 42m
United Airlines
Deal found 3/10![United Airlines logo]()
$486
This Aeromexico deal was found by Cheapflights users on 3/12. 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 4/218:45 am
MTY
- STL
2 stops11h 34m
Aeromexico
Fri 4/2411:42 am
STL
- MTY
2 stops12h 48m
Aeromexico
Deal found 3/12![Aeromexico logo]()
$654
This Frontier deal was found by Cheapflights users on 3/12. 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 5/218:40 am
MEX
- STL
1 stop9h 43m
Frontier
Sun 5/243:33 pm
STL
- MEX
1 stop8h 12m
Frontier
Deal found 3/12![Frontier logo]()
$460
This Mytrip deal was found by Cheapflights users on 3/11. 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 4/258:07 pm
MLM
- STL
2 stops22h 14m
Frontier
Sat 5/28:17 pm
STL
- MLM
2 stops38h 18m
Frontier
Deal found 3/11![Frontier logo]()
$470
This American Airlines deal was found by Cheapflights users on 3/11. 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 4/251:19 pm
MLM
- STL
1 stop18h 35m
American Airlines
Sat 5/25:20 am
STL
- MLM
1 stop8h 09m
American Airlines
Deal found 3/11![American Airlines logo]()
$790
This United Airlines deal was found by Cheapflights users on 3/12. 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 4/212:55 pm
AGU
- STL
2 stops20h 50m
United Airlines
Mon 4/68:21 am
STL
- AGU
2 stops12h 06m
United Airlines
Deal found 3/12![United Airlines logo]()
$565
This Gotogate deal was found by Cheapflights users on 3/11. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/16:18 pm
MTY
- STL
1 stop19h 56m
Frontier
Wed 4/86:15 am
STL
- MTY
1 stop18h 38m
Frontier
Deal found 3/11![Frontier logo]()
$471
This United Airlines deal was found by Cheapflights users on 3/14. 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 4/286:50 am
MLM
- STL
2 stops33h 06m
United Airlines
Tue 5/56:00 am
STL
- MLM
1 stop13h 13m
United Airlines
Deal found 3/14![United Airlines logo]()
$592
This Gotogate deal was found by Cheapflights users on 3/12. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 4/268:22 am
MLM
- STL
2 stops29h 14m
Frontier
Sun 5/39:55 pm
STL
- MLM
2 stops31h 54m
Frontier
Deal found 3/12![Frontier logo]()
$574
This United Airlines deal was found by Cheapflights users on 3/13. 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 4/35:00 am
BJX
- STL
2 stops14h 54m
United Airlines
Tue 4/77:45 am
STL
- BJX
2 stops12h 46m
United Airlines
Deal found 3/13![United Airlines logo]()
$640
This United Airlines deal was found by Cheapflights users on 3/11. 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.
Tue 4/2112:25 pm
MTY
- STL
1 stop8h 27m
United Airlines
Fri 4/246:30 am
STL
- MTY
1 stop6h 11m
United Airlines
Deal found 3/11![United Airlines logo]()
$669
This United Airlines deal was found by Cheapflights users on 3/13. 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.
Thu 4/26:50 am
MLM
- STL
1 stop14h 38m
United Airlines
Mon 4/66:00 am
STL
- MLM
1 stop13h 13m
United Airlines
Deal found 3/13![United Airlines logo]()
$686
This United Airlines deal was found by Cheapflights users on 3/12. 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 4/266:50 am
MLM
- STL
1 stop14h 38m
United Airlines
Sun 5/310:14 am
STL
- MLM
1 stop8h 59m
United Airlines
Deal found 3/12![United Airlines logo]()
$739
This United Airlines deal was found by Cheapflights users on 3/10. 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 7/2911:47 am
BJX
- STL
1 stop21h 20m
United Airlines
Wed 10/281:00 pm
STL
- BJX
2 stops22h 54m
United Airlines
Deal found 3/10![United Airlines logo]()
$742
This United Airlines deal was found by Cheapflights users on 3/12. 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 3/255:05 am
BJX
- STL
2 stops17h 29m
United Airlines
Sat 3/285:15 am
STL
- BJX
2 stops13h 29m
United Airlines
Deal found 3/12![United Airlines logo]()
$763
Last-minute flights from Mexico to St. LouisDiscover last-minute flight deals from Mexico to St. Louis. Data last updated March 15, 2026 and is based on user searches.
Discover last-minute flight deals from Mexico to St. Louis. Data last updated March 15, 2026 and is based on user searches.
This Flightnetwork deal was found by Cheapflights users on 3/11. 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 Flightnetwork is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/14:06 pm
CUN
- STL
1 stop25h 28m
Frontier
Thu 4/3011:21 am
STL
- CUN
1 stop27h 35m
Frontier
Deal found 3/11![Frontier logo]()
$322
This Frontier deal was found by Cheapflights users on 3/12. 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 4/1611:48 am
CUN
- STL
Nonstop3h 31m
Frontier
Mon 4/206:00 am
STL
- CUN
Nonstop3h 17m
Frontier
Deal found 3/12![Frontier logo]()
$244
This United Airlines deal was found by Cheapflights users on 3/12. 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 4/163:24 pm
CUN
- STL
1 stop7h 04m
United Airlines
Mon 4/207:45 am
STL
- CUN
1 stop6h 41m
United Airlines
Deal found 3/12![United Airlines logo]()
$304
This Aeromexico deal was found by Cheapflights users on 3/14. 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 4/168:00 am
CUN
- STL
1 stop15h 36m
Aeromexico
Mon 4/206:00 am
STL
- CUN
1 stop6h 40m
Aeromexico
Deal found 3/14![Aeromexico logo]()
$306
This Frontier deal was found by Cheapflights users on 3/12. 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 4/168:40 am
MEX
- STL
1 stop9h 41m
Frontier
Mon 4/203:21 pm
STL
- MEX
1 stop8h 24m
Frontier
Deal found 3/12![Frontier logo]()
$363
This Mytrip deal was found by Cheapflights users on 3/12. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/168:40 am
MEX
- STL
1 stop9h 41m
Frontier
Thu 4/238:06 pm
STL
- MEX
2 stops51h 39m
Frontier
Deal found 3/12![Frontier logo]()
$381
This Kiwi.com deal was found by Cheapflights users on 3/10. 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.
Tue 4/216:20 am
MEX
- STL
2 stops23h 30m
Multiple Airlines
Thu 4/308:06 pm
STL
- MEX
1 stop22h 24m
Multiple Airlines
Deal found 3/10![Multiple Airlines logo]()
$393
This United Airlines deal was found by Cheapflights users on 3/12. 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 4/2312:19 pm
PVR
- STL
1 stop19h 06m
United Airlines
Sat 4/254:49 pm
STL
- PVR
1 stop19h 21m
United Airlines
Deal found 3/12![United Airlines logo]()
$429
This Kiwi.com deal was found by Cheapflights users on 3/10. 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 4/2410:45 pm
MEX
- STL
2 stops19h 47m
Multiple Airlines
Fri 5/17:01 pm
STL
- MEX
1 stop28h 44m
Multiple Airlines
Deal found 3/10![Multiple Airlines logo]()
$386
This Gotogate deal was found by Cheapflights users on 3/14. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/284:10 pm
MEX
- STL
2 stops41h 16m
Frontier
Tue 5/56:51 pm
STL
- MEX
1 stop27h 54m
Frontier
Deal found 3/14![Frontier logo]()
$349
This Flightnetwork deal was found by Cheapflights users on 3/13. 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 Flightnetwork is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/294:07 pm
CUN
- STL
1 stop18h 19m
Frontier
Wed 5/136:00 am
STL
- CUN
Nonstop3h 15m
Frontier
Deal found 3/13![Frontier logo]()
$298
This Aeromexico deal was found by Cheapflights users on 3/13. 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.
Wed 4/299:12 am
CUN
- STL
2 stops14h 24m
Aeromexico
Wed 5/1310:49 am
STL
- CUN
2 stops12h 56m
Aeromexico
Deal found 3/13![Aeromexico logo]()
$305
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 March 15, 2026.
Search for one-way flight options from Mexico to St. Louis. Find affordable one-way fares based on user searches. Data last updated March 15, 2026.
This Frontier deal was found by Cheapflights users on 3/13. 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.
Thu 4/911:48 am
CUN
- STL
Nonstop3h 31m
Frontier
Deal found 3/13![Frontier logo]()
$160
This Super.com deal was found by Cheapflights users on 3/14. 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/1411:48 am
CUN
- STL
Nonstop3h 31m
Frontier
Deal found 3/14![Frontier logo]()
$167
This Frontier deal was found by Cheapflights users on 3/14. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/1511:48 am
CUN
- STL
Nonstop3h 31m
Frontier
Deal found 3/14![Frontier logo]()
$170
This Kiwi.com deal was found by Cheapflights users on 3/10. 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 5/81:40 pm
CUN
- STL
3 stops29h 32m
Multiple Airlines
Deal found 3/10![Multiple Airlines logo]()
$185
This Frontier deal was found by Cheapflights users on 3/10. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/811:48 am
CUN
- STL
Nonstop3h 31m
Frontier
Deal found 3/10![Frontier logo]()
$186
This Booking.com deal was found by Cheapflights users on 3/10. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 4/109:12 am
CUN
- STL
1 stop14h 46m
Frontier
Deal found 3/10![Frontier logo]()
$188
This TravelUp deal was found by Cheapflights users on 3/10. 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 TravelUp is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/247:45 am
CUN
- STL
1 stop11h 44m
Multiple Airlines
Deal found 3/10![Multiple Airlines logo]()
$189
This Delta deal was found by Cheapflights users on 3/13. 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 4/159:12 am
CUN
- STL
2 stops12h 07m
Delta
Deal found 3/13![Delta logo]()
$190
This United Airlines deal was found by Cheapflights users on 3/10. 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 4/143:43 pm
CUN
- STL
1 stop29h 11m
United Airlines
Deal found 3/10![United Airlines logo]()
$191
This United Airlines deal was found by Cheapflights users on 3/10. 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 4/72:49 pm
CUN
- STL
1 stop7h 39m
United Airlines
Deal found 3/10![United Airlines logo]()
$194
This Kiwi.com deal was found by Cheapflights users on 3/10. 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.
Tue 4/214:07 pm
CUN
- STL
1 stop14h 43m
Frontier
Deal found 3/10![Frontier logo]()
$195
This Kiwi.com deal was found by Cheapflights users on 3/12. 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.
Fri 5/86:25 pm
PVR
- STL
2 stops23h 58m
Multiple Airlines
Deal found 3/12![Multiple Airlines logo]()
$201
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 March 15, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $244 (Frontier) |
One-way from | $160 (Frontier) |
Popular in | November |
Cheapest in | September |
Average price | $681 |
Good one-way deal | $328 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 March 15, 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
Quickest round-trip
CancúnSt. Louis
CUN - STL
CUNSTL
Cancun
Wed 4/29
11:48 am-3:19 pm
Nonstop3h 31m
Lambert-St Louis
Wed 5/13
6:00 am-9:15 am
Nonstop3h 15m
$265
CancúnSt. Louis
CUN - STL
CUNSTL
Cancun
Thu 4/16
3:24 pm-10:28 pm
1 stop7h 04m
Lambert-St Louis
Mon 4/20
7:45 am-2:26 pm
1 stop6h 41m
$304
CancúnSt. Louis
CUN - STL
CUNSTL
Cancun
Wed 5/6
11:22 am-11:13 pm
2 stops11h 51m
Lambert-St Louis
Sun 5/10
7:15 am-12:40 pm
1 stop5h 25m
$307
CancúnSt. Louis
CUN - STL
CUNSTL
Cancun
Fri 5/1
11:48 am-3:19 pm
Nonstop3h 31m
Lambert-St Louis
Mon 5/4
6:00 am-9:17 am
Nonstop3h 17m
$324
CancúnSt. Louis
CUN - STL
CUNSTL
Cancun
Sun 5/17
3:22 pm-8:55 am
1 stop17h 33m
Lambert-St Louis
Wed 5/20
6:00 am-9:15 am
Nonstop3h 15m
$325
CancúnSt. Louis
CUN - STL
CUNSTL
Cancun
Wed 4/1
7:51 am-8:54 pm
2 stops13h 03m
Lambert-St Louis
Thu 4/30
6:00 am-7:19 pm
1 stop13h 19m
$354
Mexico CitySt. Louis
MEX - STL
MEXSTL
Mexico City Benito Juarez
Thu 4/16
8:40 am-7:21 pm
1 stop9h 41m
Lambert-St Louis
Mon 4/20
3:21 pm-10:45 pm
1 stop8h 24m
$363
CancúnSt. Louis
CUN - STL
CUNSTL
Cancun
Wed 9/2
9:05 pm-2:02 pm
1 stop16h 57m
Lambert-St Louis
Fri 9/11
12:10 pm-8:30 pm
1 stop8h 20m
$418
Mexico CitySt. Louis
MEX - STL
MEXSTL
Mexico City Benito Juarez
Sun 5/3
7:55 am-7:32 pm
2 stops34h 37m
Lambert-St Louis
Sun 5/10
3:33 pm-10:45 pm
1 stop8h 12m
$425
Puerto VallartaSt. Louis
PVR - STL
PVRSTL
Puerto Vallarta Ordaz
Thu 4/23
12:19 pm-8:25 am
1 stop19h 06m
Lambert-St Louis
Sat 4/25
4:49 pm-11:10 am
1 stop19h 21m
$429
Showing 1-10 of 59 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.
CUN-STL
MEX-STL
PVR-STL
BJX-STL
CZM-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
CUN-STL
MEX-STL
PVR-STL
BJX-STL
What is the cheapest month to book a flight from Mexico to St. Louis?
Currently, March is the cheapest month in which you can book a flight from Mexico to St. Louis (average of $154). Flying from Mexico to St. Louis in October is currently the most expensive (average of $510). 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 March 15, 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 March 15, 2026.
See what other customers who have flown with 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.
Boarding
7.7
Comfort
7.3
Crew
8.1
Entertainment
7.1
Food
6.6
Overall
7.4
Reviews
1 / 20
6.0
GoodGerry,Jan 2026
YVR - DEN
Boarding
7.7
Comfort
7.3
Crew
8.1
Entertainment
7.1
Food
6.6
Overall
7.4
Reviews
1 / 20
6.0
GoodGerry,Jan 2026
YVR - DEN
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
Maryland Heights
Collinsville
Eureka
Wentzville
Glencoe
Chesterfield
Alton
Farmington
Festus
Browse thousands of different options on Cheapflights for your next trip
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Alternative routes for Mexico to St. Louis
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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 March 15, 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 March 15, 2026.
Mexico to St. Louis flights
Consider these flights traveling from Mexico to St. Louis.
Top airline flying from Mexico to St. Louis
Discover the top airline 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 March 15, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$441 | Average$521 | FlexibilityNo cancel fee | On-time69% |