HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
St. Louis

$146+ 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 2/6. Fares are subject to change and may not be available on all flights or dates of travel.
MEX — STL
janv. 14 — janv. 211
mer. 1/14
mer. 1/21
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Mexico to St. Louis with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

Cheap flight deals from Mexico to St. Louis

Cheapest 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 décembre 15, 2025.

This Gotogate deal was found by Cheapflights users on 12/13. 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.
lun. 12/2210:10 pmCUN - STL
1 stop18h 19mAir Canada
dim. 12/284:05 pmSTL - CUN
1 stop24h 55mAir Canada
Deal found 12/13$402
This United Airlines deal was found by Cheapflights users on 12/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
ven. 12/268:15 amCUN - STL
1 stop7h 11mUnited Airlines
ven. 1/28:05 amSTL - CUN
2 stops8h 45mUnited Airlines
Deal found 12/15$407
This United Airlines deal was found by Cheapflights users on 12/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
ven. 12/262:25 pmCZM - STL
1 stop7h 30mUnited Airlines
ven. 1/26:00 amSTL - CZM
1 stop7h 23mUnited Airlines
Deal found 12/15$446
This Gotogate deal was found by Cheapflights users on 12/13. 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.
lun. 12/2210:10 pmCUN - STL
1 stop18h 19mMultiple Airlines
dim. 12/286:00 amSTL - CUN
Nonstop3h 23mMultiple Airlines
Deal found 12/13$476
This Frontier deal was found by Cheapflights users on 12/13. 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.
ven. 12/2612:26 pmCUN - STL
Nonstop3h 21mFrontier
ven. 1/26:00 amSTL - CUN
Nonstop3h 23mFrontier
Deal found 12/13$491
This Kiwi.com deal was found by Cheapflights users on 12/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 12/2210:07 amCUN - STL
2 stops13h 26mFrontier
dim. 12/2810:57 amSTL - CUN
1 stop21h 00mFrontier
Deal found 12/13$521
This eDestinos deal was found by Cheapflights users on 12/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure eDestinos is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
ven. 12/2612:26 pmCUN - STL
Nonstop3h 21mVolaris
ven. 1/26:00 amSTL - CUN
Nonstop3h 23mVolaris
Deal found 12/14$560
This Aeromexico deal was found by Cheapflights users on 12/14. 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.
jeu. 12/188:33 amBJX - STL
1 stop7h 33mAeromexico
jeu. 1/19:47 amSTL - BJX
2 stops23h 08mAeromexico
Deal found 12/14$593
This United Airlines deal was found by Cheapflights users on 12/13. 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.
jeu. 12/185:55 amBJX - STL
2 stops16h 27mUnited Airlines
jeu. 1/18:05 amSTL - BJX
2 stops10h 39mUnited Airlines
Deal found 12/13$597
This United Airlines deal was found by Cheapflights users on 12/14. 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.
lun. 12/153:50 pmBJX - STL
1 stop24h 14mUnited Airlines
lun. 12/295:45 pmSTL - BJX
1 stop24h 59mUnited Airlines
Deal found 12/14$610
This United Airlines deal was found by Cheapflights users on 12/14. 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.
jeu. 12/185:55 amBJX - STL
2 stops11h 59mUnited Airlines
ven. 1/26:00 amSTL - BJX
1 stop12h 44mUnited Airlines
Deal found 12/14$618
This eDestinos deal was found by Cheapflights users on 12/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure eDestinos is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
ven. 12/2612:26 pmCUN - STL
Nonstop3h 21mMultiple Airlines
ven. 1/27:43 pmSTL - CUN
1 stop20h 29mMultiple Airlines
Deal found 12/14$628

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 décembre 15, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$318
(Delta)

One-way from

$146
(Trip.com)

Popular in

November

Cheapest in

September

Average price

$614

Good round-trip deal

$133 or less

Good one-way deal

$182 or less
Provider with most accurate pricing for Mexico City Benito Juarez-Lambert-St Louis flight deals.
Search Deals
Provider most trusted by Cheapflights users for Mexico City Benito Juarez-Lambert-St Louis flights.
Search Deals
From Mexico to Lambert-St Louis
Search Deals
One-way flight from Mexico to Lambert-St Louis
Search Deals
Highest demand for flights based on searches. 4% potential increase in price ($26 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 1% potential price decrease ($11 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in December 2025
Search Deals
Price to beat on a round-trip flight from Mexico to Lambert-St Louis.
Search Deals
Price to beat on a one-way flight from Mexico to Lambert-St Louis.
Search Deals

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 décembre 15, 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

mer. 1/28

12:05 pm-11:25 pm

2 stops12h 20m

Lambert-St Louis

mer. 2/4

6:00 am-8:00 pm

2 stops13h 00m

$318

CancúnSt. Louis

CUN - STL

CUNSTL

Cancun

jeu. 2/19

8:39 am-10:14 pm

1 stop14h 35m

Lambert-St Louis

dim. 2/22

6:00 am-1:34 pm

1 stop6h 34m

$318

CancúnSt. Louis

CUN - STL

CUNSTL

Cancun

jeu. 2/19

8:00 am-5:42 pm

1 stop10h 42m

Lambert-St Louis

dim. 2/22

10:13 am-9:11 pm

1 stop9h 58m

$320

Mexico CitySt. Louis

MEX - STL

MEXSTL

Mexico City Benito Juarez

mar. 1/27

8:10 am-2:46 pm

1 stop30h 36m

Lambert-St Louis

lun. 2/2

9:45 pm-12:10 am

2 stops26h 25m

$356

CozumelSt. Louis

CZM - STL

CZMSTL

Cozumel

ven. 2/20

2:25 pm-9:05 pm

2 stops30h 40m

Lambert-St Louis

dim. 3/1

6:00 am-1:23 pm

1 stop7h 23m

$358

CozumelSt. Louis

CZM - STL

CZMSTL

Cozumel

mer. 1/28

2:25 pm-10:00 pm

1 stop7h 35m

Lambert-St Louis

mer. 2/4

10:20 am-1:23 pm

1 stop27h 03m

$358

CozumelSt. Louis

CZM - STL

CZMSTL

Cozumel

mar. 2/17

2:25 pm-9:23 am

1 stop18h 58m

Lambert-St Louis

mar. 2/24

4:39 pm-1:23 pm

1 stop20h 44m

$358

CozumelSt. Louis

CZM - STL

CZMSTL

Cozumel

ven. 2/20

2:25 pm-12:21 pm

2 stops21h 56m

Lambert-St Louis

sam. 2/28

4:39 pm-1:23 pm

1 stop20h 44m

$358

CozumelSt. Louis

CZM - STL

CZMSTL

Cozumel

mar. 2/17

2:25 pm-9:23 am

1 stop18h 58m

Lambert-St Louis

mer. 2/25

6:00 am-1:23 pm

1 stop7h 23m

$358

CozumelSt. Louis

CZM - STL

CZMSTL

Cozumel

jeu. 2/19

2:25 pm-1:14 pm

2 stops22h 49m

Lambert-St Louis

dim. 3/1

6:55 pm-1:23 pm

2 stops18h 28m

$358

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/15

Showing 1-10 of 60 results
1
2
3
...
6

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 $152). 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 décembre 15, 2025.

A simple way to save on the total cost of your ticket is to fly from Mexico to St. Louis in the morning. If you’re flexible enough to do this you can expect to save up to 13% on your trip compared to booking a flight at noon.

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 décembre 15, 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
9,092 reviews

Crew

8.1

Overall

7.4

Comfort

7.3

Entertainment

7.1

Food

6.6

Boarding

7.7

Reviews

1 / 20
8.0
Excellent

Anonymous,Dec 2025

AMS - EWR

It was good! The first 3/4 of the trip was uncomfortably cold. Only one option for lunch that I didn’t enjoy (vegetarian).
United Airlines
7.4
Good
9,092 reviews
United Airlines
7.4
Good
9,092 reviews

Crew

8.1

Overall

7.4

Comfort

7.3

Entertainment

7.1

Food

6.6

Boarding

7.7

Reviews

1 / 20
8.0
Excellent

Anonymous,Dec 2025

AMS - EWR

It was good! The first 3/4 of the trip was uncomfortably cold. Only one option for lunch that I didn’t enjoy (vegetarian).

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 11h 50m. Fly via Delta, United Airlines, or Aeromexico to get the fastest option. Mexico and St. Louis are separated by a distance of 1529 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 $124 on Volaris. Other airlines that offer cheap prices include Frontier from $164 and Delta from $193 one-way.

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

    The most popular flight routes from Mexico to St. Louis are León Del Bajio - Lambert-St Louis, Mexico City Benito Juarez - Lambert-St Louis and Cancun - 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 $152). 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.

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
Swansea
Eureka
Glencoe
St. Peters
Chesterfield
Alton
Farmington
Festus

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Mexico to St. Louis

See prices for flight routes from nearby airports that may be better suited for you.
John F Kennedy Intl to Kansas City flights
LaGuardia to Kansas City flights
Newark to St. Louis flights
Los Angeles to Kansas City flights
Dallas/Fort Worth to St. Louis flights
Denver to St. Louis flights
Newark to Kansas City flights
Seattle to Kansas City flights
Dulles Intl to Kansas City flights
O'Hare Intl to Kansas City flights
Boston to Kansas City flights
LaGuardia to St. Louis flights
Denver to Kansas City flights
Dulles Intl to St. Louis flights
Hobby to Kansas City flights
Dallas/Fort Worth to Kansas City flights
John F Kennedy Intl to St. Louis flights
Los Angeles to St. Louis flights
San Francisco to Kansas City flights
Reagan-National to Kansas City flights
Minneapolis to Kansas City flights
Baltimore to St. Louis flights
George Bush Intcntl to Kansas City flights
Hobby to St. Louis flights
Atlanta to St. Louis flights
Boston to St. Louis flights
Detroit to St. Louis flights
Orlando to St. Louis flights
Atlanta to Kansas City flights
Sky Harbor Intl to Kansas City flights
Baltimore to Kansas City flights
O'Hare Intl to St. Louis flights
San Francisco to St. Louis flights
George Bush Intcntl to St. Louis flights
Seattle to St. Louis flights
Reagan-National to St. Louis flights
Philadelphia to St. Louis flights
Minneapolis to St. Louis flights
Orlando to Kansas City flights
Miami to Kansas City flights
Philadelphia to Kansas City flights
Ontario to Kansas City flights
Tampa to Kansas City flights
Love Field to St. Louis flights
Portland to St. Louis flights
Pittsburgh to Kansas City flights
Detroit to Kansas City flights
Raleigh to Kansas City flights
Charlotte to St. Louis flights
Cincinnati to Kansas City flights

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 décembre 15, 2025.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$441Average$517FlexibilityNo cancel feeOn-time69%

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.