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St. Louis

$269+ Cheap flights from Mexico City (MEX) 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 11/10. Fares are subject to change and may not be available on all flights or dates of travel.
MEX — STL
Nov 29 — Dec 61
Sat 11/29
Sat 12/6
1 adult, Economy
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Cheap flight deals from Mexico City to St. Louis

Discover tips and strategies to find the most affordable flight options for your journey from Mexico City (MEX) to St. Louis (STL). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated October 30, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$374
(Kiwi.com)

One-way from

$269
(Kiwi.com)

Popular in

February

Cheapest in

March

Average price

$551
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 City Benito Juarez to Lambert-St Louis
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One-way flight from Mexico City Benito Juarez 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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Find flight deals from Mexico City to St. Louis

Cheapest flights from Mexico City to St. Louis
Explore the most affordable flight options available from Mexico City to St. Louis. Find the lowest fares from popular airlines and budget airlines, with prices last updated on October 30, 2025.

This Kiwi.com deal was found by Cheapflights users on 10/30. 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.
Thu 11/137:00 amMEX - STL
1 stop10h 27mMultiple Airlines
Sat 11/227:43 pmSTL - MEX
1 stop21h 22mMultiple Airlines
Deal found 10/30$455
This Kiwi.com deal was found by Cheapflights users on 10/29. 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 12/611:55 amMEX - STL
1 stop24h 17mMultiple Airlines
Thu 12/1112:04 pmSTL - MEX
2 stops33h 41mMultiple Airlines
Deal found 10/29$477
This Priceline deal was found by Cheapflights users on 10/29. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/66:10 pmMEX - STL
1 stop19h 40mFrontier
Thu 12/116:00 amSTL - MEX
1 stop11h 15mFrontier
Deal found 10/29$525
This Kiwi.com deal was found by Cheapflights users on 10/30. 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.
Sun 11/167:00 amMEX - STL
1 stop10h 22mMultiple Airlines
Fri 11/2112:01 pmSTL - MEX
1 stop32h 04mMultiple Airlines
Deal found 10/30$549
This Frontier deal was found by Cheapflights users on 10/30. 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.
Sat 11/1512:40 amMEX - STL
2 stops16h 42mFrontier
Fri 11/216:15 amSTL - MEX
1 stop10h 55mFrontier
Deal found 10/30$553
This Frontier deal was found by Cheapflights users on 10/29. 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 11/511:55 amMEX - STL
2 stops21h 12mFrontier
Thu 11/611:07 amSTL - MEX
2 stops10h 53mFrontier
Deal found 10/29$574
This Kiwi.com deal was found by Cheapflights users on 10/29. 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 11/58:10 amMEX - STL
1 stop24h 57mMultiple Airlines
Thu 11/66:22 pmSTL - MEX
2 stops22h 43mMultiple Airlines
Deal found 10/29$597

Cheapflights Fare Finder

 
Customize your flight search to find flights from Mexico City 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 30, 2025.
Use the filters below to find and compare flights from Mexico City to St. Louis that are best for you.

Fly from

Mexico City

Fly to

St. Louis

Route

Depart

Return

Price

Mexico CitySt. Louis

MEX - STL

MEXSTL

Mexico City Benito Juarez

Tue 1/20

8:35 am-10:02 am

1 stop25h 27m

Lambert-St Louis

Tue 1/27

5:11 pm-10:30 pm

2 stops29h 19m

$374

Mexico CitySt. Louis

MEX - STL

MEXSTL

Mexico City Benito Juarez

Tue 1/20

11:10 am-10:33 pm

1 stop11h 23m

Lambert-St Louis

Tue 1/27

7:00 am-5:10 pm

1 stop10h 10m

$454

Mexico CitySt. Louis

MEX - STL

MEXSTL

Mexico City Benito Juarez

Thu 11/13

7:00 am-5:27 pm

1 stop10h 27m

Lambert-St Louis

Sat 11/22

7:43 pm-5:05 pm

1 stop21h 22m

$455

Mexico CitySt. Louis

MEX - STL

MEXSTL

Mexico City Benito Juarez

Tue 1/20

10:05 am-8:58 pm

2 stops10h 53m

Lambert-St Louis

Tue 1/27

9:57 am-6:55 pm

2 stops8h 58m

$501

Mexico CitySt. Louis

MEX - STL

MEXSTL

Mexico City Benito Juarez

Sat 12/6

6:10 pm-1:50 pm

1 stop19h 40m

Lambert-St Louis

Thu 12/11

6:00 am-5:15 pm

1 stop11h 15m

$525

Mexico CitySt. Louis

MEX - STL

MEXSTL

Mexico City Benito Juarez

Sat 12/6

7:00 am-1:52 pm

2 stops30h 52m

Lambert-St Louis

Thu 12/11

2:47 pm-8:20 pm

3 stops29h 33m

$526

Mexico CitySt. Louis

MEX - STL

MEXSTL

Mexico City Benito Juarez

Sun 11/16

7:00 am-5:22 pm

1 stop10h 22m

Lambert-St Louis

Fri 11/21

12:01 pm-8:05 pm

1 stop32h 04m

$549

Mexico CitySt. Louis

MEX - STL

MEXSTL

Mexico City Benito Juarez

Sat 11/15

12:40 am-5:22 pm

2 stops16h 42m

Lambert-St Louis

Fri 11/21

6:15 am-5:10 pm

1 stop10h 55m

$553

Mexico CitySt. Louis

MEX - STL

MEXSTL

Mexico City Benito Juarez

Mon 11/10

8:10 am-9:07 am

1 stop24h 57m

$269

Mexico CitySt. Louis

MEX - STL

MEXSTL

Mexico City Benito Juarez

Sat 11/8

8:30 am-10:12 am

3 stops25h 42m

$287

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/28

Showing 1-10 of 11 results
1
2

Compare providers for flights from Mexico City to St. Louis

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Mexico City to St. Louis in October.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy2 starsTrust Score*3 stars
eDreamsPrice Accuracy3 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*1 star
AranGrantPrice Accuracy2 starsTrust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on Mexico City-St. Louis flights, users find the pricing of eDreams to be most consistent on Cheapflights vs. eDreams Users can find the same prices on Mexico City-St. Louis flight deals on Cheapflights vs. eDreams >95% of the time. Price accuracy is based on data collected from Mexico City-St. Louis flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Mexico City-St. Louis flights, Cheapflights users trust eDreams the most. eDreams has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Mexico City-St. Louis flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Best time to book a flight from Mexico City to St. Louis

Have a flexible travel schedule? Discover the best time to fly to St. Louis from Mexico City 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 City to St. Louis

What is the cheapest month to book a flight from Mexico City to St. Louis?

Currently, March is the cheapest month in which you can book a flight from Mexico City to St. Louis (average of $449). Flying from Mexico City to St. Louis in January is currently the most expensive (average of $623). 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 MEX to STL?

Find hourly flight availability from Mexico City 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 30, 2025.

When flying from Mexico City to St. Louis, the time of day you fly usually plays a role in the price. Save by searching for a flight at noon, which can drop the price by up to 33% versus a flight in the afternoon.

How much does it cost to fly round-trip from Mexico City to St. Louis?

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 30, 2025.
Peruse reviews from past customers who have flown with United Airlines from Mexico City to St. Louis to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
United Airlines
7.4
Good
8,998 reviews

Comfort

7.3

Crew

8.1

Food

6.6

Boarding

7.7

Overall

7.4

Entertainment

7.1

Reviews

1 / 20
2.0
Mediocre

Sebrena,Oct 2025

IAH - RSW

The worst that I have ever experienced in my life so bad if it was free I'm not ever going to use your Airline again I dont believe ..... very disappointed 😞 😔0000000000000
United Airlines
7.4
Good
8,998 reviews
United Airlines
7.4
Good
8,998 reviews

Comfort

7.3

Crew

8.1

Food

6.6

Boarding

7.7

Overall

7.4

Entertainment

7.1

Reviews

1 / 20
2.0
Mediocre

Sebrena,Oct 2025

IAH - RSW

The worst that I have ever experienced in my life so bad if it was free I'm not ever going to use your Airline again I dont believe ..... very disappointed 😞 😔0000000000000

Related info for your journey

Find useful and relevant information for your journey from Mexico City to St. Louis. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

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

    Departing from Mexico City to St. Louis will take you 10h 53m. The distance between Mexico City and St. Louis is about 1431 mi. This flight may include one or multiple stops.

  • What is the cheapest airline to fly from Mexico City to St. Louis round-trip?

    United Airlines, at $491, was found to be the cheapest airline from Mexico City to St. Louis.. This flight start at 17% lower than the current average price 3 months from now.

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

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

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

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

    Yes. Cheapflights offers flight deals from Mexico City 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 City to St. Louis?

    Currently, March is the cheapest month in which you can book a flight from Mexico City to St. Louis (average of $449). Flying from Mexico City to St. Louis in January is currently the most expensive (average of $623). 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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Top airline flying from Mexico City to St. Louis

Discover the top airline that operate flights from Mexico City 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 30, 2025.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$491Average$572FlexibilityNo cancel feeOn-time69%

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