$116+ 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 5/19. Fares are subject to change and may not be available on all flights or dates of travel.
STL — MEX
May 31 — Jun 71
Round-trip
1 adult, Economy
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Find cheap flights from St. Louis to Mexico with Cheapflights
1. Tell us where you want to go
Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”2. Select your favorite providers
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Cheapest flights from St. Louis to MexicoExplore the most affordable flight options available from St. Louis to Mexico. Find the lowest fares from popular airlines and budget airlines, with prices last updated on May 1, 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 May 1, 2026.
This Kiwi.com deal was found by Cheapflights users on 4/28. 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 5/268:08 pm
STL
- MEX
1 stop22h 22m
Multiple Airlines
Mon 6/110:05 am
MEX
- STL
2 stops30h 28m
Multiple Airlines
Deal found 4/28![Multiple Airlines logo]()
$313
This Kiwi.com deal was found by Cheapflights users on 4/28. 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.
Wed 5/278:08 pm
STL
- MEX
1 stop22h 22m
Multiple Airlines
Mon 6/110:05 am
MEX
- STL
2 stops30h 28m
Multiple Airlines
Deal found 4/28![Multiple Airlines logo]()
$330
This Priceline deal was found by Cheapflights users on 4/26. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/146:55 pm
STL
- CUN
1 stop19h 12m
Frontier
Sun 5/173:22 pm
CUN
- STL
1 stop17h 33m
Frontier
Deal found 4/26![Frontier logo]()
$337
This Expedia deal was found by Cheapflights users on 4/29. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/127:05 am
STL
- CUN
1 stop13h 05m
Multiple Airlines
Tue 5/1911:13 am
CUN
- STL
Nonstop3h 26m
Multiple Airlines
Deal found 4/29![Multiple Airlines logo]()
$339
This FlightHub deal was found by Cheapflights users on 4/27. 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 5/95:27 pm
STL
- CUN
1 stop20h 40m
Frontier
Sat 5/165:07 pm
CUN
- STL
1 stop7h 14m
Frontier
Deal found 4/27![Frontier logo]()
$341
This FlightHub deal was found by Cheapflights users on 4/28. 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.
Thu 5/76:55 pm
STL
- CUN
1 stop19h 12m
Frontier
Thu 5/143:22 pm
CUN
- STL
1 stop17h 33m
Frontier
Deal found 4/28![Frontier logo]()
$347
This Kiwi.com deal was found by Cheapflights users on 4/28. 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 6/238:08 pm
STL
- CUN
1 stop16h 40m
Frontier
Mon 6/2911:02 am
CUN
- STL
1 stop7h 16m
Frontier
Deal found 4/28![Frontier logo]()
$349
This Kiwi.com deal was found by Cheapflights users on 4/28. 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 6/238:08 pm
STL
- CUN
1 stop16h 40m
Multiple Airlines
Sat 6/2710:04 am
CUN
- STL
1 stop8h 30m
Multiple Airlines
Deal found 4/28![Multiple Airlines logo]()
$350
This Kiwi.com deal was found by Cheapflights users on 4/28. 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 6/238:08 pm
STL
- CUN
1 stop16h 40m
Multiple Airlines
Fri 6/2610:04 am
CUN
- STL
1 stop8h 14m
Multiple Airlines
Deal found 4/28![Multiple Airlines logo]()
$355
This CheapOair deal was found by Cheapflights users on 5/1. Clicking the “Pick Dates” 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.
Sun 5/248:08 pm
STL
- CUN
1 stop15h 56m
Frontier
Thu 5/283:39 pm
CUN
- STL
1 stop27h 44m
Frontier
Deal found 5/1![Frontier logo]()
$358
This Kiwi.com deal was found by Cheapflights users on 4/30. Clicking the “Pick Dates” 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 8/48:08 pm
STL
- CUN
1 stop16h 41m
Frontier
Thu 8/1311:04 am
CUN
- STL
Nonstop3h 19m
Frontier
Deal found 4/30![Frontier logo]()
$360
This CheapOair deal was found by Cheapflights users on 4/30. Clicking the “Pick Dates” 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.
Sat 5/91:05 pm
STL
- CUN
1 stop7h 55m
Multiple Airlines
Sat 5/165:07 pm
CUN
- STL
1 stop7h 14m
Multiple Airlines
Deal found 4/30![Multiple Airlines logo]()
$361
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 May 1, 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 May 1, 2026.
This Gotogate deal was found by Cheapflights users on 5/1. Clicking the “Pick Dates” 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.
Mon 6/151:05 pm
STL
- MEX
1 stop12h 30m
Air Canada
Mon 6/226:15 am
MEX
- STL
1 stop13h 10m
Air Canada
Deal found 5/1![Air Canada logo]()
$477
This Delta deal was found by Cheapflights users on 4/27. 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.
Mon 5/116:21 am
STL
- CUN
2 stops12h 14m
Delta
Mon 5/188:08 am
CUN
- STL
2 stops13h 30m
Delta
Deal found 4/27![Delta logo]()
$503
This Kiwi.com deal was found by Cheapflights users on 4/28. 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.
Fri 6/127:03 pm
STL
- MID
2 stops38h 22m
Multiple Airlines
Fri 6/1912:00 pm
MID
- STL
1 stop11h 09m
Multiple Airlines
Deal found 4/28![Multiple Airlines logo]()
$506
This Volaris deal was found by Cheapflights users on 4/27. 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 Volaris is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/303:34 pm
STL
- MEX
1 stop8h 11m
Volaris
Wed 8/58:45 pm
MEX
- STL
1 stop16h 38m
Volaris
Deal found 4/27![Volaris logo]()
$513
This United Airlines deal was found by Cheapflights users on 4/29. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 6/215:10 am
STL
- PVR
1 stop8h 43m
United Airlines
Fri 6/261:55 pm
PVR
- STL
1 stop9h 02m
United Airlines
Deal found 4/29![United Airlines logo]()
$540
This Aeromexico deal was found by Cheapflights users on 4/27. 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 Aeromexico is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/196:00 am
STL
- BJX
1 stop13h 10m
Aeromexico
Wed 9/237:25 am
BJX
- STL
2 stops15h 12m
Aeromexico
Deal found 4/27![Aeromexico logo]()
$568
This Southwest deal was found by Cheapflights users on 5/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 6/155:00 am
STL
- PVR
1 stop7h 05m
Southwest
Mon 6/223:00 pm
PVR
- STL
1 stop8h 40m
Southwest
Deal found 5/1![Southwest logo]()
$586
This American Airlines deal was found by Cheapflights users on 4/28. 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.
Sat 6/138:36 am
STL
- QRO
1 stop14h 06m
American Airlines
Sat 6/206:08 am
QRO
- STL
1 stop11h 21m
American Airlines
Deal found 4/28![American Airlines logo]()
$606
This FlightHub deal was found by Cheapflights users on 4/27. 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 6/68:08 pm
STL
- MLM
2 stops33h 47m
Frontier
Sun 6/1411:53 pm
MLM
- STL
2 stops17h 25m
Frontier
Deal found 4/27![Frontier logo]()
$718
This Air Canada deal was found by Cheapflights users on 4/27. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/261:05 pm
STL
- MEX
1 stop12h 30m
Air Canada
Sat 5/3012:20 am
MEX
- STL
1 stop10h 46m
Air Canada
Deal found 4/27![Air Canada logo]()
$486
This Kiwi.com deal was found by Cheapflights users on 4/27. 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 6/127:03 pm
STL
- GDL
1 stop20h 06m
Multiple Airlines
Fri 6/197:49 pm
GDL
- STL
2 stops21h 45m
Multiple Airlines
Deal found 4/27![Multiple Airlines logo]()
$508
This Delta deal was found by Cheapflights users on 4/28. 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 6/17:05 am
STL
- CUN
1 stop13h 11m
Delta
Fri 6/511:22 am
CUN
- STL
2 stops11h 59m
Delta
Deal found 4/28![Delta logo]()
$520
This Volaris deal was found by Cheapflights users on 4/27. 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 Volaris is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/103:34 pm
STL
- MEX
1 stop8h 11m
Volaris
Mon 8/178:40 am
MEX
- STL
1 stop9h 43m
Volaris
Deal found 4/27![Volaris logo]()
$534
This United Airlines deal was found by Cheapflights users on 4/30. Clicking the “Pick Dates” 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 7/65:10 am
STL
- PVR
1 stop8h 43m
United Airlines
Fri 7/1012:19 pm
PVR
- STL
1 stop7h 23m
United Airlines
Deal found 4/30![United Airlines logo]()
$540
This Delta deal was found by Cheapflights users on 4/28. 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.
Tue 5/266:00 am
STL
- PVR
1 stop7h 31m
Delta
Tue 6/28:36 am
PVR
- STL
2 stops14h 23m
Delta
Deal found 4/28![Delta logo]()
$537
This American Airlines deal was found by Cheapflights users on 4/28. 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 7/167:06 am
STL
- BJX
1 stop10h 26m
American Airlines
Sat 7/256:35 am
BJX
- STL
1 stop12h 16m
American Airlines
Deal found 4/28![American Airlines logo]()
$609
This Volaris deal was found by Cheapflights users on 4/29. 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.
Fri 6/266:30 am
STL
- MEX
1 stop11h 10m
Volaris
Mon 6/298:40 am
MEX
- STL
1 stop9h 43m
Volaris
Deal found 4/29![Volaris logo]()
$559
This Southwest deal was found by Cheapflights users on 5/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 6/69:30 am
STL
- CUN
1 stop6h 30m
Southwest
Thu 6/113:20 pm
CUN
- STL
Nonstop3h 05m
Southwest
Deal found 5/1![Southwest logo]()
$628
This United Airlines deal was found by Cheapflights users on 4/27. 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.
Fri 6/128:15 pm
STL
- PVR
2 stops15h 55m
United Airlines
Fri 6/1912:19 pm
PVR
- STL
1 stop7h 23m
United Airlines
Deal found 4/27![United Airlines logo]()
$585
This Delta deal was found by Cheapflights users on 4/29. 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 6/107:08 am
STL
- PVR
1 stop6h 24m
Delta
Fri 6/263:28 pm
PVR
- STL
1 stop8h 15m
Delta
Deal found 4/29![Delta logo]()
$540
This Kiwi.com deal was found by Cheapflights users on 4/27. 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.
Tue 6/307:46 pm
STL
- GDL
1 stop25h 06m
Multiple Airlines
Sat 7/45:30 pm
GDL
- STL
1 stop19h 53m
Multiple Airlines
Deal found 4/27![Multiple Airlines logo]()
$597
This American Airlines deal was found by Cheapflights users on 5/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/2510:14 am
STL
- SJD
1 stop6h 58m
American Airlines
Thu 10/292:10 pm
SJD
- STL
1 stop7h 15m
American Airlines
Deal found 5/1![American Airlines logo]()
$613
This Aeromexico deal was found by Cheapflights users on 4/29. 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 Aeromexico is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 6/31:27 pm
STL
- QRO
2 stops11h 27m
Aeromexico
Fri 6/55:55 am
QRO
- STL
2 stops9h 20m
Aeromexico
Deal found 4/29![Aeromexico logo]()
$697
This United Airlines deal was found by Cheapflights users on 4/26. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/308:35 pm
STL
- PVR
2 stops15h 35m
United Airlines
Thu 8/61:55 pm
PVR
- STL
1 stop9h 02m
United Airlines
Deal found 4/26![United Airlines logo]()
$585
This Delta deal was found by Cheapflights users on 4/29. 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.
Sat 6/67:05 am
STL
- SJD
1 stop7h 45m
Delta
Thu 6/116:02 am
SJD
- STL
2 stops14h 16m
Delta
Deal found 4/29![Delta logo]()
$543
This Southwest deal was found by Cheapflights users on 4/30. Clicking the “Pick Dates” 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 7/305:05 am
STL
- CUN
2 stops6h 55m
Southwest
Mon 8/31:00 pm
CUN
- STL
2 stops10h 10m
Southwest
Deal found 4/30![Southwest logo]()
$668
This Volaris deal was found by Cheapflights users on 5/1. Clicking the “Pick Dates” 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.
Sat 6/136:30 am
STL
- MEX
1 stop11h 10m
Volaris
Sun 6/148:40 am
MEX
- STL
1 stop9h 13m
Volaris
Deal found 5/1![Volaris logo]()
$608
This American Airlines deal was found by Cheapflights users on 4/29. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/275:15 am
STL
- MID
1 stop6h 15m
American Airlines
Thu 5/281:34 pm
MID
- STL
1 stop7h 08m
American Airlines
Deal found 4/29![American Airlines logo]()
$618
This United Airlines deal was found by Cheapflights users on 4/28. 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.
Sun 5/316:14 am
STL
- CZM
1 stop9h 28m
United Airlines
Sun 6/73:52 pm
CZM
- STL
2 stops15h 49m
United Airlines
Deal found 4/28![United Airlines logo]()
$591
This Aeromexico deal was found by Cheapflights users on 4/27. 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 Aeromexico is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 6/296:00 am
STL
- GDL
2 stops17h 49m
Aeromexico
Wed 7/110:23 am
GDL
- STL
2 stops12h 33m
Aeromexico
Deal found 4/27![Aeromexico logo]()
$748
Last-minute flights from St. Louis to MexicoDiscover last-minute flight deals from St. Louis to Mexico. Data last updated May 1, 2026 and is based on user searches.
Discover last-minute flight deals from St. Louis to Mexico. Data last updated May 1, 2026 and is based on user searches.
This FlightHub deal was found by Cheapflights users on 4/28. 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.
Thu 5/76:55 pm
STL
- CUN
1 stop19h 12m
Frontier
Thu 5/143:22 pm
CUN
- STL
1 stop17h 33m
Frontier
Deal found 4/28![Frontier logo]()
$347
This FlightHub deal was found by Cheapflights users on 4/27. 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 5/95:27 pm
STL
- CUN
1 stop20h 40m
Frontier
Sat 5/165:07 pm
CUN
- STL
1 stop7h 14m
Frontier
Deal found 4/27![Frontier logo]()
$341
This CheapOair deal was found by Cheapflights users on 4/30. Clicking the “Pick Dates” 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.
Sat 5/91:05 pm
STL
- CUN
1 stop7h 55m
Multiple Airlines
Sat 5/165:07 pm
CUN
- STL
1 stop7h 14m
Multiple Airlines
Deal found 4/30![Multiple Airlines logo]()
$361
This Expedia deal was found by Cheapflights users on 4/29. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/127:05 am
STL
- CUN
1 stop13h 05m
Multiple Airlines
Tue 5/1911:13 am
CUN
- STL
Nonstop3h 26m
Multiple Airlines
Deal found 4/29![Multiple Airlines logo]()
$339
This Priceline deal was found by Cheapflights users on 4/26. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/146:55 pm
STL
- CUN
1 stop19h 12m
Frontier
Sun 5/173:22 pm
CUN
- STL
1 stop17h 33m
Frontier
Deal found 4/26![Frontier logo]()
$337
This CheapOair deal was found by Cheapflights users on 5/1. Clicking the “Pick Dates” 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.
Sun 5/248:08 pm
STL
- CUN
1 stop15h 56m
Frontier
Thu 5/283:39 pm
CUN
- STL
1 stop27h 44m
Frontier
Deal found 5/1![Frontier logo]()
$358
This Kiwi.com deal was found by Cheapflights users on 4/28. 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 5/268:08 pm
STL
- MEX
1 stop22h 22m
Multiple Airlines
Mon 6/110:05 am
MEX
- STL
2 stops30h 28m
Multiple Airlines
Deal found 4/28![Multiple Airlines logo]()
$313
This Kiwi.com deal was found by Cheapflights users on 4/28. 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.
Wed 5/278:08 pm
STL
- MEX
1 stop22h 22m
Multiple Airlines
Mon 6/110:05 am
MEX
- STL
2 stops30h 28m
Multiple Airlines
Deal found 4/28![Multiple Airlines logo]()
$330
This Frontier deal was found by Cheapflights users on 4/28. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 6/23:33 pm
STL
- MEX
1 stop8h 12m
Frontier
Tue 6/97:00 am
MEX
- STL
1 stop10h 24m
Frontier
Deal found 4/28![Frontier logo]()
$366
This Kiwi.com deal was found by Cheapflights users on 4/28. 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 6/238:08 pm
STL
- CUN
1 stop16h 40m
Frontier
Mon 6/2911:02 am
CUN
- STL
1 stop7h 16m
Frontier
Deal found 4/28![Frontier logo]()
$349
This Kiwi.com deal was found by Cheapflights users on 4/28. 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 6/238:08 pm
STL
- CUN
1 stop16h 40m
Multiple Airlines
Sat 6/2710:04 am
CUN
- STL
1 stop8h 30m
Multiple Airlines
Deal found 4/28![Multiple Airlines logo]()
$350
This Kiwi.com deal was found by Cheapflights users on 4/28. 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 6/238:08 pm
STL
- CUN
1 stop16h 40m
Multiple Airlines
Fri 6/2610:04 am
CUN
- STL
1 stop8h 14m
Multiple Airlines
Deal found 4/28![Multiple Airlines logo]()
$355
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 May 1, 2026.
Search for one-way flight options from St. Louis to Mexico. Find affordable one-way fares based on user searches. Data last updated May 1, 2026.
This eDestinos deal was found by Cheapflights users on 4/28. 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 eDestinos is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/196:00 am
STL
- CUN
Nonstop3h 15m
Frontier
Deal found 4/28![Frontier logo]()
$116
This Kiwi.com deal was found by Cheapflights users on 4/29. 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 6/238:08 pm
STL
- CUN
1 stop16h 40m
Frontier
Deal found 4/29![Frontier logo]()
$133
This Super.com deal was found by Cheapflights users on 4/28. 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/154:19 pm
STL
- CUN
1 stop23h 38m
Frontier
Deal found 4/28![Frontier logo]()
$139
This Priceline deal was found by Cheapflights users on 5/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 5/176:55 pm
STL
- CUN
1 stop19h 12m
Frontier
Deal found 5/1![Frontier logo]()
$148
This Kiwi.com deal was found by Cheapflights users on 4/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 5/255:27 pm
STL
- CUN
2 stops39h 42m
Frontier
Deal found 4/30![Frontier logo]()
$157
This Kiwi.com deal was found by Cheapflights users on 4/28. 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 5/185:27 pm
STL
- CUN
2 stops39h 42m
Frontier
Deal found 4/28![Frontier logo]()
$169
This Super.com deal was found by Cheapflights users on 4/27. 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 6/248:08 pm
STL
- CUN
1 stop16h 40m
Frontier
Deal found 4/27![Frontier logo]()
$172
This Kiwi.com deal was found by Cheapflights users on 5/1. Clicking the “Pick Dates” 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 6/85:27 pm
STL
- CUN
2 stops20h 58m
Frontier
Deal found 5/1![Frontier logo]()
$177
This FlightHub deal was found by Cheapflights users on 4/29. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/198:08 pm
STL
- CUN
1 stop16h 00m
Frontier
Deal found 4/29![Frontier logo]()
$181
This Kiwi.com deal was found by Cheapflights users on 5/1. Clicking the “Pick Dates” 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 6/85:27 pm
STL
- MEX
2 stops29h 48m
Multiple Airlines
Deal found 5/1![Multiple Airlines logo]()
$183
This Kiwi.com deal was found by Cheapflights users on 4/27. 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.
Sun 5/244:19 pm
STL
- MEX
2 stops26h 11m
Multiple Airlines
Deal found 4/27![Multiple Airlines logo]()
$189
This FlightHub deal was found by Cheapflights users on 4/26. 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.
Tue 7/217:03 pm
STL
- GDL
1 stop25h 49m
Frontier
Deal found 4/26![Frontier logo]()
$204
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 May 1, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $313 (Kiwi.com) |
One-way from | $116 (eDestinos) |
Popular in | December |
Cheapest in | September |
Average price | $597 |
Good round-trip deal | $438 or less |
Good one-way deal | $243 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 May 1, 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. LouisMexico City
STL - MEX
STLMEX
Lambert-St Louis
Mon 6/15
1:05 pm-12:35 am
1 stop12h 30m
Mexico City Benito Juarez
Mon 6/22
6:15 am-8:25 pm
1 stop13h 10m
$477
St. LouisMexico City
STL - MEX
STLMEX
Lambert-St Louis
Tue 5/26
1:05 pm-12:35 am
1 stop12h 30m
Mexico City Benito Juarez
Sat 5/30
12:20 am-12:06 pm
1 stop10h 46m
$486
St. LouisCancún
STL - CUN
STLCUN
Lambert-St Louis
Mon 5/11
6:21 am-6:35 pm
2 stops12h 14m
Cancun
Mon 5/18
8:08 am-9:38 pm
2 stops13h 30m
$503
St. LouisMérida
STL - MID
STLMID
Lambert-St Louis
Fri 6/12
7:03 pm-8:25 am
2 stops38h 22m
Mérida Rejon
Fri 6/19
12:00 pm-12:09 am
1 stop11h 09m
$506
St. LouisGuadalajara
STL - GDL
STLGDL
Lambert-St Louis
Fri 6/12
7:03 pm-2:09 pm
1 stop20h 06m
Guadalajara Miguel Hidal
Fri 6/19
7:49 pm-6:34 pm
2 stops21h 45m
$508
St. LouisMexico City
STL - MEX
STLMEX
Lambert-St Louis
Thu 7/30
3:34 pm-10:45 pm
1 stop8h 11m
Mexico City Benito Juarez
Wed 8/5
8:45 pm-2:23 pm
1 stop16h 38m
$513
St. LouisCancún
STL - CUN
STLCUN
Lambert-St Louis
Mon 6/1
7:05 am-8:16 pm
1 stop13h 11m
Cancun
Fri 6/5
11:22 am-11:21 pm
2 stops11h 59m
$520
St. LouisMexico City
STL - MEX
STLMEX
Lambert-St Louis
Mon 8/10
3:34 pm-10:45 pm
1 stop8h 11m
Mexico City Benito Juarez
Mon 8/17
8:40 am-7:23 pm
1 stop9h 43m
$534
St. LouisPuerto Vallarta
STL - PVR
STLPVR
Lambert-St Louis
Tue 5/26
6:00 am-12:31 pm
1 stop7h 31m
Puerto Vallarta Ordaz
Tue 6/2
8:36 am-11:59 pm
2 stops14h 23m
$537
St. LouisPuerto Vallarta
STL - PVR
STLPVR
Lambert-St Louis
Sun 6/21
5:10 am-12:53 pm
1 stop8h 43m
Puerto Vallarta Ordaz
Fri 6/26
1:55 pm-11:57 pm
1 stop9h 02m
$540
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-MEX
STL-CUN
STL-MID
STL-PVR
STL-BJX
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-MEX
STL-CUN
STL-MID
STL-PVR
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 88 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.
What is the cheapest month to book a flight from St. Louis to Mexico?
Currently, July is the cheapest month in which you can book a flight from St. Louis to Mexico (average of $104). Flying from St. Louis to Mexico in January is currently the most expensive (average of $1,432). 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 May 1, 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.
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 May 1, 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.
Food
7.0
Boarding
8.1
Crew
8.6
Overall
8.0
Comfort
8.0
Entertainment
7.5
Reviews
1 / 20
2.0
MediocreDominic,Mar 2026
MCO - SMF
Food
7.0
Boarding
8.1
Crew
8.6
Overall
8.0
Comfort
8.0
Entertainment
7.5
Reviews
1 / 20
2.0
MediocreDominic,Mar 2026
MCO - SMF
Food
7.0
Boarding
8.1
Crew
8.6
Overall
8.0
Comfort
8.0
Entertainment
7.5
Reviews
1 / 20
2.0
MediocreDominic,Mar 2026
MCO - SMF
Food
7.0
Boarding
8.1
Crew
8.6
Overall
8.0
Comfort
8.0
Entertainment
7.5
Reviews
1 / 20
2.0
MediocreDominic,Mar 2026
MCO - SMF
Food
7.0
Boarding
8.1
Crew
8.6
Overall
8.0
Comfort
8.0
Entertainment
7.5
Reviews
1 / 20
2.0
MediocreDominic,Mar 2026
MCO - SMF
Food
7.0
Boarding
8.1
Crew
8.6
Overall
8.0
Comfort
8.0
Entertainment
7.5
Reviews
1 / 20
2.0
MediocreDominic,Mar 2026
MCO - SMF
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
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St. Louis and Mexico flights
Browse other St. Louis and Mexico flight options. Last updated on May 1, 2026.
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Check out other popular destinations found by fellow travelers in 2026
St. Louis to Mexico flights
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Consider these flights traveling to Mexico regions.
Top 9 airlines flying from St. Louis to Mexico
Discover the top 9 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 May 1, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$168 | Average$480 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$179 | Average$587 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$182 | Average$375 | FlexibilityNo cancel fee | On-time79% | |
| Cheapest$219 | Average$409 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$278 | Average$646 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$404 | Average$468 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$411 | Average$644 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$419 | Average$642 | FlexibilityNo cancel fee | On-time63% | |
| Cheapest$527 | Average$597 | FlexibilityNo cancel fee | On-time75% |