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Mexico City

$148+ Cheap flights from St. Louis (STL) to Mexico City (MEX)

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 1/12. Fares are subject to change and may not be available on all flights or dates of travel.
STL — MEX
Jan 11 — Jan 181
Sun 1/11
Sun 1/18
1 adult, Economy
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1. Tell us where you want to go

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Cheapflights Tip: The best prices from Lambert-St Louis to Mexico City Benito Juarez are usually found in September or May, booked 19 days in advance, depart on a Tuesday or Thursday and return on a Wednesday

Cheap flight deals from St. Louis to Mexico City

Cheapest flights from St. Louis to Mexico City
Explore the most affordable flight options available from St. Louis to Mexico City. Find the lowest fares from popular airlines and budget airlines, with prices last updated on December 12, 2025.

This Kiwi.com deal was found by Cheapflights users on 12/9. 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 12/316:00 amSTL - MEX
2 stops13h 00mMultiple Airlines
Fri 1/96:05 amMEX - STL
1 stop8h 37mMultiple Airlines
Deal found 12/9$484
This Frontier deal was found by Cheapflights users on 12/10. 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.
Thu 12/256:00 amSTL - MEX
1 stop11h 15mFrontier
Fri 1/307:00 amMEX - STL
2 stops16h 33mFrontier
Deal found 12/10$500
This Kiwi.com deal was found by Cheapflights users on 12/9. 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 12/317:43 pmSTL - MEX
1 stop21h 22mMultiple Airlines
Thu 1/810:00 pmMEX - STL
1 stop16h 42mMultiple Airlines
Deal found 12/9$509
This Kiwi.com deal was found by Cheapflights users on 12/9. 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.
Tue 12/306:00 amSTL - MEX
1 stop17h 40mMultiple Airlines
Thu 1/810:00 pmMEX - STL
1 stop16h 42mMultiple Airlines
Deal found 12/9$513
This Kiwi.com deal was found by Cheapflights users on 12/9. 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.
Tue 12/306:00 amSTL - MEX
1 stop17h 40mMultiple Airlines
Fri 1/97:00 amMEX - STL
1 stop7h 42mMultiple Airlines
Deal found 12/9$520
This Kiwi.com deal was found by Cheapflights users on 12/9. 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.
Tue 12/306:00 amSTL - MEX
1 stop17h 40mMultiple Airlines
Sat 1/107:00 amMEX - STL
2 stops15h 33mMultiple Airlines
Deal found 12/9$617
This Kiwi.com deal was found by Cheapflights users on 12/11. 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 12/2110:10 pmSTL - MEX
1 stop21h 55mMultiple Airlines
Tue 1/68:10 amMEX - STL
2 stops25h 52mMultiple Airlines
Deal found 12/11$627
This Kiwi.com deal was found by Cheapflights users on 12/11. 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 12/2110:10 pmSTL - MEX
1 stop21h 55mMultiple Airlines
Wed 1/710:00 pmMEX - STL
2 stops24h 33mMultiple Airlines
Deal found 12/11$635

Find flight deals from St. Louis to Mexico City

Discover tips and strategies to find the most affordable flight options for your journey from St. Louis (STL) to Mexico City (MEX). 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 December 12, 2025.

Most accurate provider

CheapOair
3 stars

Most trusted provider

CheapOair
3 stars

Round-trip from

$338
(Kiwi.com)

One-way from

$148
(Kiwi.com)

Popular in

December

Cheapest in

September

Average price

$810
Provider with most accurate pricing for Lambert-St Louis-Mexico City Benito Juarez flight deals.
Search Deals
Provider most trusted by Cheapflights users for Lambert-St Louis-Mexico City Benito Juarez flights.
Search Deals
From Lambert-St Louis to Mexico City Benito Juarez
Search Deals
One-way flight from Lambert-St Louis to Mexico City Benito Juarez
Search Deals
Highest demand for flights based on searches. 4% potential increase in price ($33 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($16 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in December 2025
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from St. Louis to Mexico City 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 December 12, 2025.
Use the filters below to find and compare flights from St. Louis to Mexico City that are best for you.

Fly from

St. Louis

Fly to

Mexico City

Route

Depart

Return

Price

St. LouisMexico City

STL - MEX

STLMEX

Lambert-St Louis

Thu 3/5

6:00 am-5:15 pm

1 stop11h 15m

Mexico City Benito Juarez

Mon 3/9

11:10 am-11:19 pm

1 stop11h 09m

$488

St. LouisMexico City

STL - MEX

STLMEX

Lambert-St Louis

Mon 1/19

6:00 am-5:15 pm

1 stop11h 15m

Mexico City Benito Juarez

Thu 1/22

11:10 am-11:33 pm

1 stop12h 23m

$495

St. LouisMexico City

STL - MEX

STLMEX

Lambert-St Louis

Thu 3/5

10:42 am-10:00 pm

2 stops11h 18m

Mexico City Benito Juarez

Sun 3/8

11:10 am-10:33 pm

1 stop10h 23m

$501

St. LouisMexico City

STL - MEX

STLMEX

Lambert-St Louis

Fri 1/16

8:39 am-7:45 pm

1 stop11h 06m

Mexico City Benito Juarez

Tue 1/20

11:10 am-11:33 pm

1 stop12h 23m

$524

St. LouisMexico City

STL - MEX

STLMEX

Lambert-St Louis

Thu 12/25

6:00 am-5:15 pm

1 stop11h 15m

Mexico City Benito Juarez

Fri 1/30

11:10 am-11:33 pm

1 stop12h 23m

$529

St. LouisMexico City

STL - MEX

STLMEX

Lambert-St Louis

Thu 3/5

7:10 am-8:50 pm

1 stop13h 40m

Mexico City Benito Juarez

Mon 3/9

7:10 am-9:10 pm

2 stops13h 00m

$550

St. LouisMexico City

STL - MEX

STLMEX

Lambert-St Louis

Thu 1/22

6:00 am-3:15 pm

1 stop9h 15m

Mexico City Benito Juarez

Mon 1/26

2:50 pm-11:25 pm

1 stop8h 35m

$550

St. LouisMexico City

STL - MEX

STLMEX

Lambert-St Louis

Thu 3/5

10:13 am-8:40 pm

2 stops10h 27m

Mexico City Benito Juarez

Sun 3/8

10:30 pm-2:58 pm

2 stops15h 28m

$550

St. LouisMexico City

STL - MEX

STLMEX

Lambert-St Louis

Mon 1/12

1:07 pm-8:05 pm

1 stop30h 58m

$148

St. LouisMexico City

STL - MEX

STLMEX

Lambert-St Louis

Fri 1/9

8:35 am-7:45 pm

1 stop11h 10m

$253

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/11

Showing 1-10 of 15 results
1
2

Compare providers for flights from St. Louis to Mexico City

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 St. Louis to Mexico City in December.
ProviderPrice AccuracyTrust Score*
FlightHubPrice Accuracy3 starsTrust Score*1 star
eDreamsPrice Accuracy3 starsTrust Score*3 stars
AranGrantPrice Accuracy2 starsTrust Score*3 stars
CheapOairPrice Accuracy3 starsTrust Score*3 stars
BudgetAirPrice Accuracy1 starTrust Score*3 stars
SmartFaresPrice Accuracy1 starTrust Score*1 star

*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 St. Louis-Mexico City flights, users find the pricing of CheapOair to be most consistent on Cheapflights vs. CheapOair Users can find the same prices on St. Louis-Mexico City flight deals on Cheapflights vs. CheapOair >95% of the time. Price accuracy is based on data collected from St. Louis-Mexico City flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on St. Louis-Mexico City flights, Cheapflights users trust CheapOair the most. CheapOair 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 St. Louis-Mexico City 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 St. Louis to Mexico City

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

How far ahead should I book a flight from St. Louis to Mexico City?

Use this chart to determine the optimal time to book a round-trip flight from St. Louis to Mexico City. Price data was last updated on December 5, 2025.

The price you pay for your flight from St. Louis to Mexico City may vary depending on when you book. For the best chance of a lower fare, look to book 19 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.

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

Currently, January is the cheapest month in which you can book a flight from St. Louis to Mexico City (average of $471). Flying from St. Louis to Mexico City in June is currently the most expensive (average of $545). 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 STL to MEX?

Find hourly flight availability from St. Louis to Mexico City. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated December 12, 2025.

A simple way to save on the total cost of your ticket is to fly from St. Louis to Mexico City at noon. If you’re flexible enough to do this you can expect to save up to 8% on your trip compared to booking a flight in the afternoon.

Reviews of airlines servicing Mexico City

Get insights into the airlines that provide service to Mexico City. 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 Mexico City. Reviews last updated December 12, 2025.
See what other customers who have flown with Delta, United Airlines, and Aeromexico from St. Louis to Mexico City have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
7.9
Good
8,005 reviews

Entertainment

7.9

Overall

7.9

Comfort

7.9

Boarding

8.1

Crew

8.5

Food

7.3

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.
Delta
7.9
Good
8,005 reviews
Delta
7.9
Good
8,005 reviews

Entertainment

7.9

Overall

7.9

Comfort

7.9

Boarding

8.1

Crew

8.5

Food

7.3

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.
United Airlines
7.4
Good
9,095 reviews
Delta
7.9
Good
8,005 reviews

Entertainment

7.9

Overall

7.9

Comfort

7.9

Boarding

8.1

Crew

8.5

Food

7.3

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.
Aeromexico
7.4
Good
1,643 reviews
Delta
7.9
Good
8,005 reviews

Entertainment

7.9

Overall

7.9

Comfort

7.9

Boarding

8.1

Crew

8.5

Food

7.3

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.
American Airlines
7.2
Good
11,049 reviews
Delta
7.9
Good
8,005 reviews

Entertainment

7.9

Overall

7.9

Comfort

7.9

Boarding

8.1

Crew

8.5

Food

7.3

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.
Frontier
5.8
Fair
3,084 reviews
Delta
7.9
Good
8,005 reviews

Entertainment

7.9

Overall

7.9

Comfort

7.9

Boarding

8.1

Crew

8.5

Food

7.3

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.

Related info for your journey

Find useful and relevant information for your journey from St. Louis to Mexico City. 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 St. Louis to Mexico City?

    For as low as $488, Frontier can have you in Mexico City from St. Louis in 11h 15m. The distance from St. Louis to Mexico City is about 1431 mi.

  • What are the cheapest airlines flying from St. Louis to Mexico City round-trip?

    Frontier, at $471, was found to be the cheapest airline from St. Louis to Mexico City.Alternate airlines to your destination round-trip include Aeromexico and Delta. These flights start at 26% lower than the current average price 3 months from now.

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

    For one-way options, check prices for Delta. According to our data, you can fly for as low as $196. Users have also found prices from $198 and $304 on Air Canada and United Airlines, respectively.

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

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

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

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

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

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

    Currently, January is the cheapest month in which you can book a flight from St. Louis to Mexico City (average of $471). Flying from St. Louis to Mexico City in June is currently the most expensive (average of $545). 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 City?

Book flights to Mexico City if you plan to visit one of these locations
Taxco

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Alternative routes for St. Louis to Mexico City

See prices for flight routes from nearby airports that may be better suited for you.
Kansas City to Mexico City flights
Springfield to Mexico City flights

Top 5 airlines flying from St. Louis to Mexico City

Discover the top 5 airlines that operate flights from St. Louis to Mexico City. 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 December 12, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$471Average$489FlexibilityNo cancel feeOn-time62%
AeromexicoCheapest$487Average$579FlexibilityNo cancel feeOn-timeN/A
DeltaCheapest$487Average$587FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$528Average$671FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$537Average$640FlexibilityNo cancel feeOn-time69%

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