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St. Louis

$134+ 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 1/31. Fares are subject to change and may not be available on all flights or dates of travel.
MEX — STL
Nov 23 — Nov 301
Sun 11/23
Sun 11/30
1 adult, Economy
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Cheap 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 October 24, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$266
(Delta)

One-way from

$134
(Kiwi.com)

Popular in

February

Cheapest in

March

Average price

$551

Good round-trip deal

$189 or less

Good one-way deal

$189 or less
Provider with most accurate pricing for Mexico City Benito Juarez-Lambert-St Louis flight deals.
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Provider most trusted by Cheapflights users for Mexico City Benito Juarez-Lambert-St Louis flights.
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From Mexico to Lambert-St Louis
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One-way flight from Mexico to Lambert-St Louis
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High demand for flights, 1% potential price rise
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Cheapest flight prices on average. 1% potential price decrease ($9 potential savings vs. average RT price).
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Average for round-trip flights in October 2025
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Price to beat on a round-trip flight from Mexico to Lambert-St Louis.
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Price to beat on a one-way flight from Mexico to Lambert-St Louis.
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Find flight deals from Mexico to St. Louis

Cheapest flights from Mexico to St. Louis
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 October 24, 2025.

This Flightnetwork deal was found by Cheapflights users on 10/22. Clicking the “Pick Dates” 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.
Sat 12/611:28 amCUN - STL
Nonstop3h 22mFrontier
Sat 12/136:00 amSTL - CUN
Nonstop3h 23mFrontier
Deal found 10/22$310
This Mytrip deal was found by Cheapflights users on 10/23. Clicking the “Pick Dates” 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 11/511:50 amCUN - STL
1 stop28h 39mAir Canada
Sat 11/154:05 pmSTL - CUN
1 stop28h 10mAir Canada
Deal found 10/23$333
This Kiwi.com deal was found by Cheapflights users on 10/22. Clicking the “Pick Dates” 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 12/610:12 amCUN - STL
1 stop13h 21mMultiple Airlines
Sat 12/136:00 amSTL - CUN
Nonstop3h 23mMultiple Airlines
Deal found 10/22$363
This Mytrip deal was found by Cheapflights users on 10/22. Clicking the “Pick Dates” 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 11/2210:10 pmCUN - STL
1 stop18h 19mAir Canada
Sat 11/294:05 pmSTL - CUN
1 stop28h 10mAir Canada
Deal found 10/22$366
This American Airlines deal was found by Cheapflights users on 10/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/612:32 pmCUN - STL
Nonstop3h 35mAmerican Airlines
Sat 12/135:30 pmSTL - CUN
1 stop16h 30mAmerican Airlines
Deal found 10/22$368
This Mytrip deal was found by Cheapflights users on 10/22. Clicking the “Pick Dates” 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 11/2210:12 amCUN - STL
2 stops24h 51mSpirit Airlines
Sat 11/299:52 amSTL - CUN
1 stop6h 21mSpirit Airlines
Deal found 10/22$382
This Trip.com deal was found by Cheapflights users on 10/22. Clicking the “Pick Dates” 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.
Sat 11/2212:14 pmCUN - STL
Nonstop3h 19mMultiple Airlines
Sat 11/299:52 amSTL - CUN
1 stop6h 21mMultiple Airlines
Deal found 10/22$386
This Cheapflightsfares deal was found by Cheapflights users on 10/22. Clicking the “Pick Dates” 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.
Sat 11/2212:14 pmCUN - STL
Nonstop3h 19mVolaris
Sat 11/296:15 amSTL - CUN
Nonstop3h 18mVolaris
Deal found 10/22$399
This Cheapflightsfares deal was found by Cheapflights users on 10/23. Clicking the “Pick Dates” 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.
Wed 11/53:45 pmCUN - STL
Nonstop3h 15mVolaris
Sat 11/1510:17 amSTL - CUN
Nonstop3h 13mVolaris
Deal found 10/23$401
This Booking.com deal was found by Cheapflights users on 10/23. Clicking the “Pick Dates” 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.
Wed 11/53:10 pmCUN - STL
1 stop25h 19mMultiple Airlines
Sat 11/1510:17 amSTL - CUN
Nonstop3h 13mMultiple Airlines
Deal found 10/23$410
This Aeromexico deal was found by Cheapflights users on 10/23. Clicking the “Pick Dates” 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 12/203:30 pmCZM - STL
1 stop6h 13mAeromexico
Sat 1/37:00 amSTL - CZM
1 stop7h 15mAeromexico
Deal found 10/23$456
This United Airlines deal was found by Cheapflights users on 10/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/185:55 amBJX - STL
2 stops16h 27mUnited Airlines
Tue 12/306:30 amSTL - BJX
2 stops29h 24mUnited Airlines
Deal found 10/22$460

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 October 24, 2025.
Use the filters below to find and compare flights from Mexico to St. Louis that are best for you.

Fly from

Mexico

Fly to

St. Louis

Route

Depart

Return

Price

CancúnSt. Louis

CUN - STL

CUNSTL

Cancun

Thu 2/19

2:10 pm-11:10 pm

1 stop10h 00m

Lambert-St Louis

Sun 2/22

11:51 am-9:10 pm

1 stop8h 19m

$266

CancúnSt. Louis

CUN - STL

CUNSTL

Cancun

Fri 1/30

1:01 pm-3:26 pm

Nonstop3h 25m

Lambert-St Louis

Tue 2/3

7:00 am-11:24 am

Nonstop3h 24m

$290

CancúnSt. Louis

CUN - STL

CUNSTL

Cancun

Fri 1/30

2:22 pm-10:05 pm

1 stop8h 43m

Lambert-St Louis

Tue 2/3

9:25 am-4:03 pm

1 stop5h 38m

$290

CancúnSt. Louis

CUN - STL

CUNSTL

Cancun

Thu 2/19

1:01 pm-3:26 pm

Nonstop3h 25m

Lambert-St Louis

Sun 2/22

6:00 am-10:23 am

Nonstop3h 23m

$308

CancúnSt. Louis

CUN - STL

CUNSTL

Cancun

Sat 12/6

11:28 am-1:50 pm

Nonstop3h 22m

Lambert-St Louis

Sat 12/13

6:00 am-10:23 am

Nonstop3h 23m

$310

CancúnSt. Louis

CUN - STL

CUNSTL

Cancun

Wed 11/5

11:50 am-3:29 pm

1 stop28h 39m

Lambert-St Louis

Sat 11/15

4:05 pm-9:15 pm

1 stop28h 10m

$333

CancúnSt. Louis

CUN - STL

CUNSTL

Cancun

Thu 2/19

11:50 am-9:40 pm

1 stop10h 50m

Lambert-St Louis

Sun 2/22

6:40 am-2:30 pm

1 stop6h 50m

$343

CancúnSt. Louis

CUN - STL

CUNSTL

Cancun

Sat 12/6

10:12 am-10:33 pm

1 stop13h 21m

Lambert-St Louis

Sat 12/13

6:00 am-10:23 am

Nonstop3h 23m

$363

CancúnSt. Louis

CUN - STL

CUNSTL

Cancun

Sat 11/22

10:10 pm-3:29 pm

1 stop18h 19m

Lambert-St Louis

Sat 11/29

4:05 pm-9:15 pm

1 stop28h 10m

$366

Mexico CitySt. Louis

MEX - STL

MEXSTL

Mexico City Benito Juarez

Sun 2/1

11:55 am-10:02 am

2 stops22h 07m

Lambert-St Louis

Sat 2/14

6:00 am-5:10 pm

1 stop11h 10m

$417

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/23

Showing 1-10 of 60 results
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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.
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

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 $143). Flying from Mexico to St. Louis in February is currently the most expensive (average of $548). 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 October 24, 2025.

A simple way to save on the total cost of your ticket is to fly from Mexico to St. Louis in the evening. If you’re flexible enough to do this you can expect to save up to 27% on your trip compared to booking a flight in the morning.

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 October 24, 2025.
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.
United Airlines
7.4
Good
8,995 reviews

Crew

8.1

Food

6.6

Overall

7.4

Entertainment

7.1

Comfort

7.3

Boarding

7.7

Reviews

1 / 20
8.0
Excellent

Anonymous,Oct 2025

YUL - ORD

Crew and customer service are 5 stars. I had a lot of luggage for a very long trip and they were nothing but helpful and found solutions to every problem. It was my first time flying with United, and they really are the friendly skies. Leg room however, on 2/3 flights was terrible. Same for entertainment: There was only a seat-mounted screen on 1/3 flights. It would have been nice to have on the longest leg of the journey.
United Airlines
7.4
Good
8,995 reviews
United Airlines
7.4
Good
8,995 reviews

Crew

8.1

Food

6.6

Overall

7.4

Entertainment

7.1

Comfort

7.3

Boarding

7.7

Reviews

1 / 20
8.0
Excellent

Anonymous,Oct 2025

YUL - ORD

Crew and customer service are 5 stars. I had a lot of luggage for a very long trip and they were nothing but helpful and found solutions to every problem. It was my first time flying with United, and they really are the friendly skies. Leg room however, on 2/3 flights was terrible. Same for entertainment: There was only a seat-mounted screen on 1/3 flights. It would have been nice to have on the longest leg of the journey.

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.

  • What airport do you fly into for flights to St. Louis from Mexico?

    Located just 12.7 mi from the city center, Lambert-St Louis (STL) is the airport most travelers will use when flying to St. Louis from Mexico.

  • How long is the flight from Mexico to St. Louis?

    There are many flights that can get you from Mexico to St. Louis in 3h 25m. Fly via Delta, Frontier, or American Airlines to get the fastest option. Mexico and St. Louis are separated by a distance of 1241 mi. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

  • What are the cheapest airlines to fly from Mexico to St. Louis one-way?

    One-way options have recently been found by users for as low as $167 on Frontier. Other airlines that offer cheap prices include Spirit Airlines from $183 and Volaris from $188 one-way.

  • What are the most popular routes from Mexico to St. Louis?

    The most popular flight routes from Mexico to St. Louis are Cancun - Lambert-St Louis, León Del Bajio - Lambert-St Louis and Monterrey Gen Mariano Escobedo - Lambert-St Louis.

  • Can I find deals for flights from Mexico to St. Louis that include hotel bookings?

    Yes. In addition to deals on Mexico to St. Louis flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Mexico to St. Louis?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Mexico to St. Louis.

  • Can I find deals for business class flights from Mexico to St. Louis?

    Yes. Cheapflights offers flight deals from Mexico to St. Louis by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • 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 $143). Flying from Mexico to St. Louis in February is currently the most expensive (average of $548). 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.

See more FAQs

Traveling to a place near St. Louis?

Book flights to St. Louis if you plan to visit one of these locations
Edwardsville
O'Fallon
Fairview Heights
Maryland Heights
Collinsville
Eureka
Glencoe
St. Peters
Chesterfield
Alton
Farmington
Festus

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Alternative routes for Mexico to St. Louis

See prices for flight routes from nearby airports that may be better suited for you.
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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 October 24, 2025.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$441Average$514FlexibilityNo cancel feeOn-time69%

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