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

For as low as $461, Frontier can have you in Mexico City from St. Louis in 26h 51m. 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.

In terms of precipitation, rainfall in Mexico City ranges from 0.0 - 4.7 inches per month. July is typically the wettest month, when rainfall can reach 4.7 in. January is typically the driest time to visit Mexico City when rainfall is around 0.0 in.

If weather is an important factor for your trip to Mexico City, use this chart to help with planning. For those seeking warmer temperatures, May is the ideal time of year to visit, when temperatures reach an average of 66.2 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 55.4 F).

What are the most popular airlines that fly from St. Louis to Mexico City?

Consider American Airlines, United Airlines or Delta when booking your flight. These represent the most popular airlines when flying from St. Louis to Mexico City.

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.

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.

$245+ Flights from St. Louis to Mexico City

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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

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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 10, 2025.

Mon 12/151:16 pmSTL - MEX

1 stop30h 49mMultiple Airlines

Thu 1/86:10 pmMEX - STL

1 stop20h 32mMultiple Airlines

Deal found 12/8

$474

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

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

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

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

Tue 12/166:00 amSTL - MEX

2 stops16h 45mMultiple Airlines

Thu 1/86:10 pmMEX - STL

1 stop20h 32mMultiple Airlines

Deal found 12/8

$540

Mon 12/2210:10 pmSTL - MEX

2 stops18h 55mMultiple Airlines

Thu 1/86:10 pmMEX - STL

1 stop20h 32mMultiple Airlines

Deal found 12/8

$547

Thu 12/256:00 amSTL - MEX

1 stop17h 40mMultiple Airlines

Thu 1/86:10 pmMEX - STL

1 stop20h 32mMultiple Airlines

Deal found 12/8

$568

Mon 12/151:16 pmSTL - MEX

1 stop30h 49mMultiple Airlines

Wed 1/76:40 amMEX - STL

1 stop7h 47mMultiple Airlines

Deal found 12/8

$571

Best flights from St. Louis to Mexico City
Discover carefully curated flight deals from St. Louis to Mexico City that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated December 10, 2025.

Fri 1/2311:18 amSTL - MEX

1 stop8h 27mMultiple Airlines

Mon 1/263:45 pmMEX - STL

2 stops31h 48mMultiple Airlines

Deal found 12/8

$411

Fri 1/237:39 pmSTL - MEX

2 stops26h 51mFrontier

Mon 1/263:45 pmMEX - STL

2 stops47h 01mFrontier

Deal found 12/8

$461

Thu 3/510:13 amSTL - MEX

2 stops13h 16mAeromexico

Sun 3/810:30 pmMEX - STL

2 stops18h 23mAeromexico

Deal found 12/8

$550

Thu 1/226:00 amSTL - MEX

1 stop9h 15mDelta

Mon 1/262:50 pmMEX - STL

1 stop8h 35mDelta

Deal found 12/8

$550

Thu 1/2910:01 pmSTL - MEX

1 stop22h 04mMultiple Airlines

Fri 2/68:10 amMEX - STL

1 stop30h 36mMultiple Airlines

Deal found 12/9

$422

Thu 1/85:11 pmSTL - MEX

1 stop26h 34mMultiple Airlines

Thu 1/1510:00 pmMEX - STL

1 stop17h 29mMultiple Airlines

Deal found 12/9

$428

Mon 1/196:00 amSTL - MEX

1 stop11h 15mFrontier

Thu 1/2211:10 amMEX - STL

1 stop12h 23mFrontier

Deal found 12/9

$506

Wed 2/257:10 amSTL - MEX

2 stops10h 50mAeromexico

Sun 3/18:10 pmMEX - STL

2 stops18h 37mAeromexico

Deal found 12/9

$550

Fri 1/166:00 amSTL - MEX

2 stops10h 20mAeromexico

Tue 1/2011:05 amMEX - STL

2 stops12h 32mAeromexico

Deal found 12/7

$570

Last-minute flights from St. Louis to Mexico City
Discover last-minute flight deals from St. Louis to Mexico City. Data last updated December 10, 2025 and is based on user searches.

Tue 1/65:11 pmSTL - MEX

2 stops41h 34mMultiple Airlines

Tue 1/1310:00 pmMEX - STL

1 stop17h 29mMultiple Airlines

Deal found 12/9

$397

Thu 1/83:43 pmSTL - MEX

2 stops30h 47mMultiple Airlines

Thu 1/1510:00 pmMEX - STL

1 stop17h 29mMultiple Airlines

Deal found 12/9

$375

Wed 1/213:46 pmSTL - MEX

2 stops30h 44mMultiple Airlines

Wed 1/2811:10 amMEX - STL

1 stop12h 23mMultiple Airlines

Deal found 12/8

$353

Wed 1/213:46 pmSTL - MEX

2 stops30h 44mFrontier

Wed 1/283:45 pmMEX - STL

2 stops50h 59mFrontier

Deal found 12/8

$420

Fri 1/237:39 pmSTL - MEX

1 stop21h 26mMultiple Airlines

Fri 1/306:20 amMEX - STL

2 stops24h 31mMultiple Airlines

Deal found 12/9

$379

Fri 1/2311:18 amSTL - MEX

1 stop8h 27mMultiple Airlines

Mon 1/263:45 pmMEX - STL

2 stops31h 48mMultiple Airlines

Deal found 12/8

$411

Thu 1/2910:01 pmSTL - MEX

1 stop22h 04mMultiple Airlines

Fri 2/68:10 amMEX - STL

1 stop30h 36mMultiple Airlines

Deal found 12/9

$422

One-way flights from St. Louis to Mexico City
Search for one-way flight options from St. Louis to Mexico City. Find affordable one-way fares based on user searches. Data last updated December 10, 2025.

Fri 1/234:05 pmSTL - MEX

1 stop8h 45mAir Canada

Deal found 12/9

$245

Mon 12/2910:40 amSTL - MEX

1 stop9h 05mFrontier

Deal found 12/9

$247

Tue 12/163:30 pmSTL - MEX

2 stops28h 35mMultiple Airlines

Deal found 12/9

$273

Sat 12/207:43 pmSTL - MEX

2 stops24h 22mMultiple Airlines

Deal found 12/9

$278

Fri 12/198:42 pmSTL - MEX

2 stops23h 23mMultiple Airlines

Deal found 12/9

$289

Sun 12/2110:10 pmSTL - MEX

1 stop21h 55mMultiple Airlines

Deal found 12/9

$315

Mon 12/2210:10 pmSTL - MEX

2 stops18h 55mMultiple Airlines

Deal found 12/9

$318

Fri 1/236:00 amSTL - MEX

2 stops10h 35mDelta

Deal found 12/9

$336

Find flight deals from St. Louis to Mexico City

Most accurate provider	CheapOair 3 stars
Most trusted provider	CheapOair 3 stars
Round-trip from	$353 (Kiwi.com)
One-way from	$245 (Gotogate)
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

Use the filters below to find and compare flights from St. Louis to Mexico City that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

St. LouisMexico City

STL - MEX

STLMEX

Lambert-St Louis

Fri 1/23

11:18 am-7:45 pm

1 stop8h 27m

Mexico City Benito Juarez

Mon 1/26

3:45 pm-11:33 pm

2 stops31h 48m

$411

St. LouisMexico City

STL - MEX

STLMEX

Lambert-St Louis

Thu 1/29

10:01 pm-8:05 pm

1 stop22h 04m

Mexico City Benito Juarez

Fri 2/6

8:10 am-2:46 pm

1 stop30h 36m

$422

St. LouisMexico City

STL - MEX

STLMEX

Lambert-St Louis

Thu 1/8

5:11 pm-7:45 pm

1 stop26h 34m

Mexico City Benito Juarez

Thu 1/15

10:00 pm-3:29 pm

1 stop17h 29m

$428

St. LouisMexico City

STL - MEX

STLMEX

Lambert-St Louis

Fri 1/23

7:39 pm-10:30 pm

2 stops26h 51m

Mexico City Benito Juarez

Mon 1/26

3:45 pm-2:46 pm

2 stops47h 01m

$461

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

$506

St. LouisMexico City

STL - MEX

STLMEX

Lambert-St Louis

Thu 3/5

10:13 am-11:29 pm

2 stops13h 16m

Mexico City Benito Juarez

Sun 3/8

10:30 pm-5:53 pm

2 stops18h 23m

$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

Wed 2/25

7:10 am-6:00 pm

2 stops10h 50m

Mexico City Benito Juarez

Sun 3/1

8:10 pm-2:47 pm

2 stops18h 37m

$550

St. LouisMexico City

STL - MEX

STLMEX

Lambert-St Louis

Fri 1/16

6:00 am-4:20 pm

2 stops10h 20m

Mexico City Benito Juarez

Tue 1/20

11:05 am-11:37 pm

2 stops12h 32m

$570

St. LouisMexico City

STL - MEX

STLMEX

Lambert-St Louis

Fri 1/23

4:05 pm-12:50 am

1 stop8h 45m

$245

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/9

Showing 1-10 of 15 results

Compare providers for flights from St. Louis to Mexico City

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.

Provider	Price Accuracy	Trust Score*
FlightHub	Price Accuracy3 stars	Trust Score*1 star
eDreams	Price Accuracy3 stars	Trust Score*3 stars
AranGrant	Price Accuracy2 stars	Trust Score*3 stars
CheapOair	Price Accuracy3 stars	Trust Score*3 stars
BudgetAir	Price Accuracy1 star	Trust Score*3 stars
SmartFares	Price Accuracy1 star	Trust 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?

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?

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

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

8,007 reviews

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

8,007 reviews

Delta

7.9

Good

8,007 reviews

Reviews

1 / 20

6.0

Good

Jim,Nov 2025

AVL - ATL

United Airlines

7.4

Good

9,093 reviews

Delta

7.9

Good

8,007 reviews

Reviews

1 / 20

6.0

Good

Jim,Nov 2025

AVL - ATL

Aeromexico

7.4

Good

1,642 reviews

Delta

7.9

Good

8,007 reviews

Reviews

1 / 20

6.0

Good

Jim,Nov 2025

AVL - ATL

American Airlines

7.2

Good

11,048 reviews

Delta

7.9

Good

8,007 reviews

Reviews

1 / 20

6.0

Good

Jim,Nov 2025

AVL - ATL

Frontier

5.8

Fair

3,085 reviews

Delta

7.9

Good

8,007 reviews

Reviews

1 / 20

6.0

Good

Jim,Nov 2025

AVL - ATL

Related info for your journey

How long is the flight from St. Louis to Mexico City?
For as low as $461, Frontier can have you in Mexico City from St. Louis in 26h 51m. 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

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Complete your trip

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Tlalpan car rentals

Gustavo A. Madero car rentals

Other flights to Mexico City

Top 5 airlines flying from St. Louis to Mexico City

Airline	Cheapest	Average	Flexibility	On-time
Frontier	Cheapest$471	Average$489	FlexibilityNo cancel fee	On-time62%
Aeromexico	Cheapest$487	Average$579	FlexibilityNo cancel fee	On-timeN/A
Delta	Cheapest$487	Average$587	FlexibilityNo cancel fee	On-timeN/A
American Airlines	Cheapest$528	Average$671	FlexibilityNo cancel fee	On-time71%
United Airlines	Cheapest$537	Average$640	FlexibilityNo cancel fee	On-time69%

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$245+ 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 1/23. Fares are subject to change and may not be available on all flights or dates of travel.

Find cheap flights from St. Louis to Mexico City with Cheapflights

1. Tell us where you want to go

2. Select your favorite providers

3. Compare prices and book

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 CityExplore 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 10, 2025.

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 10, 2025.

Find flight deals from St. Louis to Mexico City

Most accurate provider

Most trusted provider

Round-trip from

One-way from

Popular in

Cheapest in

Average price

Cheapflights Fare Finder

Use the filters below to find and compare flights from St. Louis to Mexico City that are best for you.

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.

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.

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?

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

What is the cheapest time of day to fly from STL to MEX?

Reviews of airlines servicing Mexico City

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.

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?

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

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

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

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

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

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

Traveling to a place near Mexico City?

Browse thousands of different options on Cheapflights for your next trip

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Alternative routes for St. Louis to Mexico City

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Top 5 airlines flying from St. Louis to Mexico City

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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 10, 2025.