$191+ 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 6/25. 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
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
Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.Cheapflights Tip: The best prices from Lambert-St Louis to Mexico City Benito Juarez are usually found in August or September, booked 77 days in advance, depart on a Tuesday or Thursday and return on a Wednesday
Cheap 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 June 12, 2025.
Round-trip from | $429 (Air Canada) |
|---|---|
One-way from | $191 (Air Canada) |
Popular in | December |
Cheapest in | August |
Average price | $652 |
Find 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 June 12, 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 June 12, 2025.
This Booking.com deal was found by Cheapflights users on 6/10. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
This FlightHub deal was found by Cheapflights users on 6/12. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
This CheapOair deal was found by Cheapflights users on 6/9. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
This Aeromexico deal was found by Cheapflights users on 6/12. 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.
This Delta deal was found by Cheapflights users on 6/9. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
This American Airlines deal was found by Cheapflights users on 6/12. 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.
This United Airlines deal was found by Cheapflights users on 6/11. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight 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 June 12, 2025.
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
Sun 6/22
7:30 am-11:10 am
1 stop28h 40m
Mexico City Benito Juarez
Sat 6/28
7:10 am-8:48 pm
1 stop12h 38m
St. LouisMexico City
STL - MEX
STLMEX
Lambert-St Louis
Thu 10/30
10:17 am-11:00 pm
1 stop13h 43m
Mexico City Benito Juarez
Wed 11/5
5:45 pm-6:07 pm
1 stop24h 22m
St. LouisMexico City
STL - MEX
STLMEX
Lambert-St Louis
Wed 8/27
7:54 pm-5:30 pm
1 stop22h 36m
Mexico City Benito Juarez
Sun 8/31
6:45 am-6:09 pm
1 stop10h 24m
St. LouisMexico City
STL - MEX
STLMEX
Lambert-St Louis
Thu 10/30
10:45 am-11:25 pm
2 stops13h 40m
Mexico City Benito Juarez
Wed 11/5
6:05 am-6:02 pm
2 stops11h 57m
St. LouisMexico City
STL - MEX
STLMEX
Lambert-St Louis
Tue 10/21
9:00 am-7:20 pm
1 stop11h 20m
Mexico City Benito Juarez
Mon 10/27
8:55 am-11:02 pm
2 stops13h 07m
St. LouisMexico City
STL - MEX
STLMEX
Lambert-St Louis
Tue 7/15
7:44 am-2:30 pm
1 stop7h 46m
Mexico City Benito Juarez
Fri 7/25
5:15 pm-9:18 am
1 stop15h 03m
St. LouisMexico City
STL - MEX
STLMEX
Lambert-St Louis
Thu 7/24
8:00 am-5:50 pm
2 stops10h 50m
Mexico City Benito Juarez
Sun 8/3
6:30 am-10:15 pm
1 stop14h 45m
St. LouisMexico City
STL - MEX
STLMEX
Lambert-St Louis
Wed 11/5
3:30 pm-2:55 pm
2 stops23h 25m
Mexico City Benito Juarez
Sat 11/8
1:10 am-12:56 pm
2 stops35h 46m
St. LouisMexico City
STL - MEX
STLMEX
Lambert-St Louis
Wed 6/25
1:30 pm-10:55 pm
1 stop10h 25m
St. LouisMexico City
STL - MEX
STLMEX
Lambert-St Louis
Tue 9/23
6:00 am-4:40 pm
2 stops11h 40m
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?
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 June 9, 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 77 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, May is the cheapest month in which you can book a flight from St. Louis to Mexico City (average of $388). Flying from St. Louis to Mexico City in December is currently the most expensive (average of $615). 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 June 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 9% on your trip compared to booking a flight in the afternoon.
Rainfall in Mexico City by month
Plan your trip to Mexico City by taking into account the average rainfall totals by month.
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.
Temperature in Mexico City by month
Plan your trip to Mexico City by taking into account the average temperature totals by month.
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).
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 June 12, 2025.
Read through reviews of airlines operating flights from St. Louis to Mexico City, such as Delta, Aeromexico and United Airlines. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Crew
Overall
Food
Comfort
Entertainment
Boarding
Reviews
Kim,May 2025
PIH - SLC
Crew
Overall
Food
Comfort
Entertainment
Boarding
Reviews
Kim,May 2025
PIH - SLC
Crew
Overall
Food
Comfort
Entertainment
Boarding
Reviews
Kim,May 2025
PIH - SLC
Crew
Overall
Food
Comfort
Entertainment
Boarding
Reviews
Kim,May 2025
PIH - SLC
Crew
Overall
Food
Comfort
Entertainment
Boarding
Reviews
Kim,May 2025
PIH - SLC
Crew
Overall
Food
Comfort
Entertainment
Boarding
Reviews
Kim,May 2025
PIH - SLC
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.
Traveling to a place near St. Louis?
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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.
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 June 12, 2025.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$471 | Average$607 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$487 | Average$537 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$487 | Average$587 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$511 | Average$647 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$527 | Average$658 | FlexibilityNo cancel fee | On-time71% |