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St. Louis

$109+ Cheap flights from Mexico to St. Louis (STL)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 4/14. Fares are subject to change and may not be available on all flights or dates of travel.
MEX — STL
Feb 27 — Mar 61
Fri 2/27
Fri 3/6
1 adult, Economy
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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 January 28, 2026.

This United Airlines deal was found by Cheapflights users on 1/26. 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.
Wed 2/254:45 pm
CUN
-
STL
1 stop7h 14m
United Airlines
Wed 3/46:00 am
STL
-
CUN
1 stop6h 34m
United Airlines
Deal found 1/26$272
This United Airlines deal was found by Cheapflights users on 1/27. 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.
Thu 2/193:18 pm
CUN
-
STL
1 stop8h 41m
United Airlines
Mon 2/236:00 am
STL
-
CUN
1 stop8h 59m
United Airlines
Deal found 1/27$273
This Frontier deal was found by Cheapflights users on 1/26. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 2/2511:42 am
CUN
-
STL
Nonstop3h 27m
Frontier
Wed 3/48:17 pm
STL
-
CUN
1 stop11h 34m
Frontier
Deal found 1/26$298
This United Airlines deal was found by Cheapflights users on 1/27. 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.
Tue 2/245:55 pm
CUN
-
STL
2 stops20h 19m
United Airlines
Tue 3/34:28 pm
STL
-
CUN
1 stop20h 06m
United Airlines
Deal found 1/27$313
This United Airlines deal was found by Cheapflights users on 1/26. 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 3/125:30 am
CUN
-
STL
2 stops11h 26m
United Airlines
Thu 3/196:00 am
STL
-
CUN
1 stop13h 18m
United Airlines
Deal found 1/26$356
This American Airlines deal was found by Cheapflights users on 1/26. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 3/125:57 pm
CUN
-
STL
1 stop14h 58m
American Airlines
Thu 3/197:00 am
STL
-
CUN
1 stop12h 45m
American Airlines
Deal found 1/26$378
This eDestinos deal was found by Cheapflights users on 1/26. 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 eDestinos is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 2/252:24 pm
CUN
-
STL
2 stops41h 27m
Multiple Airlines
Wed 3/48:17 pm
STL
-
CUN
3 stops28h 19m
Multiple Airlines
Deal found 1/26$388
This Mytrip deal was found by Cheapflights users on 1/26. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 1/299:15 am
MTY
-
STL
1 stop30h 14m
Air Canada
Sat 2/74:05 pm
STL
-
MTY
1 stop28h 25m
Air Canada
Deal found 1/26$389
This United Airlines deal was found by Cheapflights users on 1/27. 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.
Thu 2/262:25 pm
CZM
-
STL
1 stop18h 58m
United Airlines
Sat 2/284:28 pm
STL
-
CZM
1 stop20h 55m
United Airlines
Deal found 1/27$395
This eDestinos deal was found by Cheapflights users on 1/26. 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 eDestinos is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 2/2711:10 am
MEX
-
STL
1 stop13h 17m
Multiple Airlines
Mon 3/23:49 pm
STL
-
MEX
1 stop27h 56m
Multiple Airlines
Deal found 1/26$402
This United Airlines deal was found by Cheapflights users on 1/27. 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.
Tue 2/242:25 pm
CZM
-
STL
1 stop7h 49m
United Airlines
Tue 3/36:00 am
STL
-
CZM
1 stop7h 23m
United Airlines
Deal found 1/27$408
This eDestinos deal was found by Cheapflights users on 1/27. 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 eDestinos is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 2/2011:10 am
MEX
-
STL
1 stop13h 17m
Multiple Airlines
Mon 2/231:54 pm
STL
-
MEX
1 stop27h 11m
Multiple Airlines
Deal found 1/27$409

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 January 28, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$272
(Delta)

One-way from

$109
(Kiwi.com)

Popular in

November

Cheapest in

September

Average price

$584

Good one-way deal

$186 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. 0% potential increase in price ($6 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 1% potential price decrease ($10 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in January 2026
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 January 28, 2026.
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

Wed 2/25

4:45 pm-11:36 pm

1 stop7h 51m

Lambert-St Louis

Wed 3/4

6:00 am-6:47 pm

2 stops11h 47m

$272

CancúnSt. Louis

CUN - STL

CUNSTL

Cancun

Wed 2/25

12:05 pm-11:36 pm

2 stops12h 31m

Lambert-St Louis

Wed 3/4

6:10 am-6:47 pm

2 stops11h 37m

$272

CancúnSt. Louis

CUN - STL

CUNSTL

Cancun

Wed 2/25

4:45 pm-10:59 pm

1 stop7h 14m

Lambert-St Louis

Wed 3/4

6:00 am-1:34 pm

1 stop6h 34m

$272

CancúnSt. Louis

CUN - STL

CUNSTL

Cancun

Thu 2/19

3:18 pm-10:59 pm

1 stop8h 41m

Lambert-St Louis

Mon 2/23

6:00 am-12:54 pm

1 stop5h 54m

$272

CozumelSt. Louis

CZM - STL

CZMSTL

Cozumel

Thu 2/26

2:25 pm-9:23 am

1 stop18h 58m

Lambert-St Louis

Sat 2/28

4:28 pm-1:23 pm

1 stop20h 55m

$395

Mexico CitySt. Louis

MEX - STL

MEXSTL

Mexico City Benito Juarez

Fri 2/27

11:10 am-12:27 am

1 stop13h 17m

Lambert-St Louis

Mon 3/2

3:49 pm-7:45 pm

1 stop27h 56m

$402

CozumelSt. Louis

CZM - STL

CZMSTL

Cozumel

Wed 2/25

2:25 pm-10:14 pm

1 stop7h 49m

Lambert-St Louis

Wed 3/4

6:00 am-1:23 pm

1 stop7h 23m

$408

CozumelSt. Louis

CZM - STL

CZMSTL

Cozumel

Tue 2/24

2:25 pm-10:14 pm

1 stop7h 49m

Lambert-St Louis

Tue 3/3

6:00 am-1:23 pm

1 stop7h 23m

$408

Mexico CitySt. Louis

MEX - STL

MEXSTL

Mexico City Benito Juarez

Fri 2/20

11:10 am-12:27 am

1 stop13h 17m

Lambert-St Louis

Mon 2/23

1:54 pm-9:10 pm

2 stops31h 16m

$424

Puerto VallartaSt. Louis

PVR - STL

PVRSTL

Puerto Vallarta Ordaz

Thu 2/26

11:55 am-10:14 pm

1 stop10h 19m

Lambert-St Louis

Sat 2/28

4:30 pm-10:47 am

2 stops18h 17m

$427

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/26

Showing 1-10 of 57 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 $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 January 28, 2026.

When flying from Mexico to St. Louis, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

Reviews of airlines servicing St. Louis

Get insights into the airlines that provide service to St. Louis. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to St. Louis. Reviews last updated January 28, 2026.
See what other customers who have flown with United Airlines from Mexico to St. Louis have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
United Airlines
7.4
Good
9,209 reviews

Boarding

7.7

Crew

8.1

Overall

7.4

Comfort

7.3

Entertainment

7.1

Food

6.6

Reviews

1 / 20
6.0
Good

Gerry,Jan 2026

YVR - DEN

Seats were uncomfortable. Second leg of my flight on United had much more comfortable seats
United Airlines
7.4
Good
9,209 reviews
United Airlines
7.4
Good
9,209 reviews

Boarding

7.7

Crew

8.1

Overall

7.4

Comfort

7.3

Entertainment

7.1

Food

6.6

Reviews

1 / 20
6.0
Good

Gerry,Jan 2026

YVR - DEN

Seats were uncomfortable. Second leg of my flight on United had much more comfortable seats

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 7h 14m. Fly via Aeromexico, Delta, or United 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 $159 on Frontier. Other airlines that offer cheap prices include Volaris from $166 and Alaska Airlines from $186 one-way.

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

    The most popular flight routes from Mexico to St. Louis are Mexico City Benito Juarez - Lambert-St Louis, Cancun - Lambert-St Louis and Cozumel - 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
Swansea
Fairview Heights
Maryland Heights
Collinsville
Eureka
Glencoe
Chesterfield
Alton
Farmington
Festus

Browse thousands of different options on Cheapflights for your next trip

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Alternative routes for Mexico to St. Louis

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 January 28, 2026.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$452Average$525FlexibilityNo cancel feeOn-time69%

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