$106+ 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 5/11. Fares are subject to change and may not be available on all flights or dates of travel.
STL — MEX
Mar 8 — Mar 151
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
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 St. Louis to Mexico
Keep the following information in mind while searching for St. Louis to Mexico flight deals. Data was last updated March 3, 2025.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $271 (CheapOair) |
One-way from | $106 (Cheapflightsfares) |
Popular in | December |
Cheapest in | May |
Average price | $714 |
Good round-trip deal | $364 or less |
Good one-way deal | $170 or less |
Find flight deals from St. Louis to Mexico
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 March 3, 2025.
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 March 3, 2025.
This CheapOair deal was found by Cheapflights users on 3/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/16:47 pmSTL - CUN
1 stop16h 33mMultiple Airlines
Fri 4/411:46 amCUN - STL
Nonstop3h 26mMultiple Airlines
Deal found 3/3![Multiple Airlines logo]()
$271
This Cheapflightsfares deal was found by Cheapflights users on 3/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/96:10 amSTL - CUN
Nonstop3h 12mVolaris
Mon 5/1212:39 pmCUN - STL
Nonstop3h 23mVolaris
Deal found 3/3![Volaris logo]()
$350
This CheapOair deal was found by Cheapflights users on 3/2. Clicking the “Pick Dates” 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 5/14:07 pmSTL - CUN
1 stop22h 03mFrontier
Tue 5/612:39 pmCUN - STL
Nonstop3h 23mFrontier
Deal found 3/2![Frontier logo]()
$352
This CheapOair deal was found by Cheapflights users on 3/2. Clicking the “Pick Dates” 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 3/297:03 pmSTL - PVR
1 stop15h 26mFrontier
Sat 4/510:49 amPVR - STL
1 stop23h 48mFrontier
Deal found 3/2![Frontier logo]()
$399
This Kiwi.com deal was found by Cheapflights users on 3/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/512:15 pmSTL - MEX
2 stops17h 35mMultiple Airlines
Wed 4/911:05 amMEX - STL
1 stop11h 41mMultiple Airlines
Deal found 3/2![Multiple Airlines logo]()
$409
This Air Canada deal was found by Cheapflights users on 3/3. Clicking the “Pick Dates” 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.
Sat 5/31:30 pmSTL - MEX
1 stop10h 25mAir Canada
Mon 5/127:10 amMEX - STL
1 stop11h 48mAir Canada
Deal found 3/3![Air Canada logo]()
$440
This Mytrip deal was found by Cheapflights users on 3/1. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/1612:15 pmSTL - BJX
3 stops34h 32mMultiple Airlines
Wed 4/234:00 pmBJX - STL
2 stops24h 15mMultiple Airlines
Deal found 3/1![Multiple Airlines logo]()
$445
This Delta deal was found by Cheapflights users on 3/3. Clicking the “Pick Dates” 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 3/196:00 amSTL - CUN
2 stops11h 34mDelta
Tue 3/2511:05 amCUN - STL
1 stop10h 35mDelta
Deal found 3/3![Delta logo]()
$447
This Kiwi.com deal was found by Cheapflights users on 3/3. Clicking the “Pick Dates” 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 3/316:58 pmSTL - PVR
2 stops42h 04mMultiple Airlines
Mon 4/73:45 pmPVR - STL
1 stop22h 27mMultiple Airlines
Deal found 3/3![Multiple Airlines logo]()
$447
This Aeromexico deal was found by Cheapflights users on 3/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Aeromexico is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 3/307:10 amSTL - CZM
1 stop6h 50mAeromexico
Fri 4/42:20 pmCZM - STL
1 stop4h 55mAeromexico
Deal found 3/2![Aeromexico logo]()
$449
This Trip.com deal was found by Cheapflights users on 3/1. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/1612:51 pmSTL - BJX
1 stop6h 42mAeromexico
Wed 4/2312:28 pmBJX - STL
2 stops10h 08mAeromexico
Deal found 3/1![Aeromexico logo]()
$454
This American Airlines deal was found by Cheapflights users on 3/2. Clicking the “Pick Dates” 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 4/163:44 pmSTL - PVR
1 stop19h 44mAmerican Airlines
Wed 4/232:00 pmPVR - STL
1 stop19h 33mAmerican Airlines
Deal found 3/2![American Airlines logo]()
$455
Find flights from St. Louis to Mexico within your budget
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 March 3, 2025.
Fly from
St. Louis
Fly to
Mexico
Route
Depart
Return
Price
St. LouisCancún
STL - CUN
STLCUN
Lambert-St Louis
Tue 4/1
6:47 pm-11:20 am
1 stop16h 33m
Cancun
Fri 4/4
11:46 am-3:12 pm
Nonstop3h 26m
$271
St. LouisCancún
STL - CUN
STLCUN
Lambert-St Louis
Fri 5/9
6:10 am-9:22 am
Nonstop3h 12m
Cancun
Mon 5/12
12:39 pm-4:02 pm
Nonstop3h 23m
$350
St. LouisCancún
STL - CUN
STLCUN
Lambert-St Louis
Thu 5/1
4:07 pm-2:10 pm
1 stop22h 03m
Cancun
Tue 5/6
12:39 pm-4:02 pm
Nonstop3h 23m
$352
St. LouisPuerto Vallarta
STL - PVR
STLPVR
Lambert-St Louis
Sat 3/29
7:03 pm-9:29 am
1 stop15h 26m
Puerto Vallarta Ordaz
Sat 4/5
10:49 am-11:37 am
1 stop23h 48m
$399
St. LouisMexico City
STL - MEX
STLMEX
Lambert-St Louis
Sat 4/5
12:15 pm-4:50 am
2 stops17h 35m
Mexico City Benito Juarez
Wed 4/9
11:05 am-11:46 pm
1 stop11h 41m
$409
St. LouisCancún
STL - CUN
STLCUN
Lambert-St Louis
Tue 3/25
6:47 pm-11:20 am
1 stop16h 33m
Cancun
Sat 3/29
11:14 am-5:52 pm
2 stops30h 38m
$416
St. LouisMexico City
STL - MEX
STLMEX
Lambert-St Louis
Sat 5/3
1:30 pm-10:55 pm
1 stop10h 25m
Mexico City Benito Juarez
Mon 5/12
7:10 am-7:58 pm
1 stop11h 48m
$440
St. LouisLeón
STL - BJX
STLBJX
Lambert-St Louis
Wed 4/16
12:15 pm-9:47 pm
3 stops34h 32m
León Del Bajio
Wed 4/23
4:00 pm-5:15 pm
2 stops24h 15m
$445
St. LouisCancún
STL - CUN
STLCUN
Lambert-St Louis
Wed 3/19
6:00 am-5:34 pm
2 stops11h 34m
Cancun
Tue 3/25
11:05 am-9:40 pm
1 stop10h 35m
$447
St. LouisPuerto Vallarta
STL - PVR
STLPVR
Lambert-St Louis
Mon 3/31
6:58 pm-12:02 pm
2 stops42h 04m
Puerto Vallarta Ordaz
Mon 4/7
3:45 pm-3:12 pm
1 stop22h 27m
$447
Showing 1-10 of 60 results
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.
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.
Travel insights for flights from St. Louis to Mexico
Get recent, data-driven insights about flights from St. Louis to Mexico including ideal travel times, pricing trends, and more.
What is the cheapest month to book a flight from St. Louis to Mexico?
Currently, May is the cheapest month in which you can book a flight from St. Louis to Mexico (average of $400). Flying from St. Louis to Mexico in December is currently the most expensive (average of $615). 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 March 3, 2025.
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.
Rainfall in Mexico by month
Plan your trip to Mexico by taking into account the average rainfall totals by month.
In terms of precipitation, rainfall in Mexico ranges from 0.0 - 4.7 inches per month. July is typically the wettest month, when rainfall can reach 4.7 in. January is typically the driest time to visit Mexico when rainfall is around 0.0 in.
Temperature in Mexico by month
Plan your trip to Mexico by taking into account the average temperature totals by month.
If weather is an important factor for your trip to Mexico, use this chart to help with planning. For those seeking warmer temperatures, May is the ideal time of year to visit, when temperatures reach an average of 66.2 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 55.4 F).
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 March 3, 2025.
Read reviews from past customers who have flown Southwest, Delta and Alaska Airlines from St. Louis to Mexico. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Crew
8.7
Boarding
8.2
Food
7.1
Overall
8.1
Entertainment
7.6
Comfort
8.1
Reviews
1 / 20
10.0
Merlyn,Feb 2025
LAX - SMF
Crew
8.7
Boarding
8.2
Food
7.1
Overall
8.1
Entertainment
7.6
Comfort
8.1
Reviews
1 / 20
10.0
Merlyn,Feb 2025
LAX - SMF
Crew
8.7
Boarding
8.2
Food
7.1
Overall
8.1
Entertainment
7.6
Comfort
8.1
Reviews
1 / 20
10.0
Merlyn,Feb 2025
LAX - SMF
Crew
8.7
Boarding
8.2
Food
7.1
Overall
8.1
Entertainment
7.6
Comfort
8.1
Reviews
1 / 20
10.0
Merlyn,Feb 2025
LAX - SMF
Crew
8.7
Boarding
8.2
Food
7.1
Overall
8.1
Entertainment
7.6
Comfort
8.1
Reviews
1 / 20
10.0
Merlyn,Feb 2025
LAX - SMF
Crew
8.7
Boarding
8.2
Food
7.1
Overall
8.1
Entertainment
7.6
Comfort
8.1
Reviews
1 / 20
10.0
Merlyn,Feb 2025
LAX - 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.
Browse thousands of different options on Cheapflights for your next trip
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Alternative routes for St. Louis to Mexico
See prices for flight routes from nearby airports that may be better suited for you.
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 March 3, 2025.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$176 | Average$390 | FlexibilityNo cancel fee | On-time79% | |
| Cheapest$179 | Average$287 | FlexibilityNo cancel fee | On-time65% | |
| Cheapest$278 | Average$552 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$372 | Average$490 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$386 | Average$545 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$387 | Average$610 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$398 | Average$492 | FlexibilityNo cancel fee | On-time75% | |
| Cheapest$406 | Average$587 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$516 | Average$745 | FlexibilityNo cancel fee | On-time63% |