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St. Louis

$179+ 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 5/1. Fares are subject to change and may not be available on all flights or dates of travel.
MEX — STL
Apr 9 — Apr 161
Wed 4/9
Wed 4/16
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 April 4, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$350
(CheapOair)

One-way from

$179
(Kiwi.com)

Popular in

March

Cheapest in

August

Average price

$551

Good round-trip deal

$166 or less

Good one-way deal

$204 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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Highest demand for flights based on searches. 16% potential increase in price ($116 potential increase over avg. RT price).
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Cheapest flight prices on average. 4% potential price decrease ($26 potential savings vs. average RT price).
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Average for round-trip flights in April 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 April 4, 2025.

This CheapOair deal was found by Cheapflights users on 4/3. 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.
Sat 5/312:37 pmCUN - STL
Nonstop3h 23mFrontier
Fri 5/96:10 amSTL - CUN
Nonstop3h 12mFrontier
Deal found 4/3$350
This Delta deal was found by Cheapflights users on 4/3. 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.
Sat 5/36:08 amCUN - STL
2 stops12h 42mDelta
Fri 5/91:09 pmSTL - CUN
1 stop7h 11mDelta
Deal found 4/3$398
This Kiwi.com deal was found by Cheapflights users on 4/3. 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.
Fri 4/2511:05 amMEX - STL
1 stop11h 59mMultiple Airlines
Mon 5/56:53 pmSTL - MEX
2 stops27h 27mMultiple Airlines
Deal found 4/3$398
This United Airlines deal was found by Cheapflights users on 4/3. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/33:30 pmCUN - STL
1 stop6h 33mUnited Airlines
Fri 5/94:50 pmSTL - CUN
1 stop19h 43mUnited Airlines
Deal found 4/3$400
This SmartFares deal was found by Cheapflights users on 4/3. 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 SmartFares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 4/2511:05 amMEX - STL
1 stop11h 59mFrontier
Mon 5/59:55 pmSTL - MEX
1 stop24h 15mFrontier
Deal found 4/3$410
This Kiwi.com deal was found by Cheapflights users on 4/3. 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.
Wed 4/911:20 amMTY - STL
1 stop23h 56mMultiple Airlines
Mon 12/11:00 pmSTL - MTY
2 stops32h 05mMultiple Airlines
Deal found 4/3$421
This United Airlines deal was found by Cheapflights users on 4/3. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/105:00 amBJX - STL
1 stop8h 36mUnited Airlines
Mon 4/215:35 pmSTL - BJX
2 stops18h 14mUnited Airlines
Deal found 4/3$429
This Mytrip deal was found by Cheapflights users on 4/3. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/312:20 pmCUN - STL
2 stops28h 55mMultiple Airlines
Fri 5/912:15 pmSTL - CUN
3 stops33h 45mMultiple Airlines
Deal found 4/3$434
This Aeromexico deal was found by Cheapflights users on 4/3. 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 Aeromexico is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/17:05 amMEX - STL
1 stop6h 55mAeromexico
Thu 5/810:05 amSTL - MEX
1 stop9h 35mAeromexico
Deal found 4/3$447
This United Airlines deal was found by Cheapflights users on 4/3. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/33:50 pmCZM - STL
1 stop5h 13mUnited Airlines
Fri 5/96:00 amSTL - CZM
1 stop7h 19mUnited Airlines
Deal found 4/3$456
This United Airlines deal was found by Cheapflights users on 4/3. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 5/184:40 pmMEX - STL
2 stops21h 07mUnited Airlines
Sun 5/254:32 pmSTL - MEX
2 stops17h 03mUnited Airlines
Deal found 4/3$465
This United Airlines deal was found by Cheapflights users on 4/3. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/226:50 amMLM - STL
2 stops52h 30mUnited Airlines
Tue 7/225:00 amSTL - MLM
2 stops14h 13mUnited Airlines
Deal found 4/3$468

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 April 4, 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

Sat 5/3

12:37 pm-4:00 pm

Nonstop3h 23m

Lambert-St Louis

Fri 5/9

6:10 am-9:22 am

Nonstop3h 12m

$350

CancúnSt. Louis

CUN - STL

CUNSTL

Cancun

Sat 5/3

6:08 am-6:50 pm

2 stops12h 42m

Lambert-St Louis

Fri 5/9

1:09 pm-8:20 pm

1 stop7h 11m

$398

Mexico CitySt. Louis

MEX - STL

MEXSTL

Mexico City Benito Juarez

Fri 4/25

11:05 am-12:04 am

1 stop11h 59m

Lambert-St Louis

Mon 5/5

6:53 pm-9:20 pm

2 stops27h 27m

$398

CancúnSt. Louis

CUN - STL

CUNSTL

Cancun

Sat 5/3

3:30 pm-10:03 pm

1 stop6h 33m

Lambert-St Louis

Fri 5/9

4:50 pm-12:33 pm

1 stop19h 43m

$400

Mexico CitySt. Louis

MEX - STL

MEXSTL

Mexico City Benito Juarez

Fri 4/25

11:05 am-12:04 am

1 stop11h 59m

Lambert-St Louis

Mon 5/5

9:55 pm-9:10 pm

1 stop24h 15m

$410

CancúnSt. Louis

CUN - STL

CUNSTL

Cancun

Sat 5/3

12:20 pm-5:15 pm

2 stops28h 55m

Lambert-St Louis

Fri 5/9

12:15 pm-10:00 pm

3 stops33h 45m

$434

Mexico CitySt. Louis

MEX - STL

MEXSTL

Mexico City Benito Juarez

Thu 5/1

7:05 am-3:00 pm

1 stop6h 55m

Lambert-St Louis

Thu 5/8

10:05 am-6:40 pm

1 stop9h 35m

$447

CozumelSt. Louis

CZM - STL

CZMSTL

Cozumel

Sat 5/3

3:50 pm-10:03 pm

1 stop5h 13m

Lambert-St Louis

Fri 5/9

6:00 am-12:19 pm

1 stop7h 19m

$456

Mexico CitySt. Louis

MEX - STL

MEXSTL

Mexico City Benito Juarez

Sun 5/18

4:40 am-10:03 pm

1 stop16h 23m

Lambert-St Louis

Sun 5/25

8:25 am-8:35 am

1 stop25h 10m

$465

MoreliaSt. Louis

MLM - STL

MLMSTL

Morelia

Tue 4/22

6:50 am-12:20 pm

2 stops52h 30m

Lambert-St Louis

Tue 7/22

5:00 am-6:13 pm

2 stops14h 13m

$468

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/2

Showing 1-10 of 33 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, August is the cheapest month in which you can book a flight from Mexico to St. Louis (average of $311). Flying from Mexico to St. Louis in March is currently the most expensive (average of $356). 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 April 4, 2025.

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.

Rainfall in St. Louis by month

Plan your trip to St. Louis by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in St. Louis ranges from 2.2 - 4.7 inches per month. May is typically the wettest month, when rainfall can reach 4.7 in. February is typically the driest time to visit St. Louis when rainfall is around 2.2 in.

Temperature in St. Louis by month

Plan your trip to St. Louis by taking into account the average temperature totals by month.

If weather is an important factor for your trip to St. Louis, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 80.6 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 32.0 F).

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 April 4, 2025.
Peruse reviews from past customers who have flown with Delta, Aeromexico and United Airlines from Mexico to St. Louis to help guide your decision. In addition to providing an overall rating, users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very good
7,897 reviews

Boarding

8.2

Entertainment

7.9

Food

7.3

Crew

8.5

Overall

8.0

Comfort

8.0

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception
Delta
8.0
Very good
7,897 reviews
Delta
8.0
Very good
7,897 reviews

Boarding

8.2

Entertainment

7.9

Food

7.3

Crew

8.5

Overall

8.0

Comfort

8.0

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception
Aeromexico
7.5
Good
1,701 reviews
Delta
8.0
Very good
7,897 reviews

Boarding

8.2

Entertainment

7.9

Food

7.3

Crew

8.5

Overall

8.0

Comfort

8.0

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception
United Airlines
7.4
Good
8,618 reviews
Delta
8.0
Very good
7,897 reviews

Boarding

8.2

Entertainment

7.9

Food

7.3

Crew

8.5

Overall

8.0

Comfort

8.0

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception
American Airlines
7.2
Good
10,000 reviews
Delta
8.0
Very good
7,897 reviews

Boarding

8.2

Entertainment

7.9

Food

7.3

Crew

8.5

Overall

8.0

Comfort

8.0

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception
Air Canada
7.0
Good
9,036 reviews
Delta
8.0
Very good
7,897 reviews

Boarding

8.2

Entertainment

7.9

Food

7.3

Crew

8.5

Overall

8.0

Comfort

8.0

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

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.

  • 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 $181 on Spirit Airlines. Other airlines that offer cheap prices include Delta from $192 and United Airlines from $197 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 Morelia - 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, August is the cheapest month in which you can book a flight from Mexico to St. Louis (average of $311). Flying from Mexico to St. Louis in March is currently the most expensive (average of $356). 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 Mexico?

Book flights to Mexico if you plan to visit one of these locations
Fenton
Maryland Heights
Fairview Heights
Collinsville
Wentzville
Eureka
St. Peters
Festus
Glencoe
Alton
Farmington
Chesterfield

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 2 airlines flying from Mexico to St. Louis

Discover the top 2 airlines 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 April 4, 2025.
AirlineCheapestAverageFlexibilityOn-time
AeromexicoCheapest$453Average$453FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$507Average$676FlexibilityNo cancel feeOn-time71%

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