$235+ Cheap flights from Mexico City (MEX) to St. Louis (STL)
This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 10/9. Fares are subject to change and may not be available on all flights or dates of travel.
MEX — STL
Oct 12 — Oct 191
Round-trip
1 adult, Economy
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Find cheap flights from Mexico City to St. Louis 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.Cheap flight deals from Mexico City to St. Louis
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Cheapest flights from Mexico City to St. LouisExplore 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 September 12, 2026.
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 September 12, 2026.
This Kiwi.com deal was found by Cheapflights users on 9/11. 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.
Fri 10/98:45 pm -
1 stop16h 40m
Mon 10/126:35 pm -
2 stops28h 40m
Deal found 9/11![Multiple Airlines logo]()
$381
This Frontier deal was found by Cheapflights users on 9/9. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/157:00 am -
1 stop8h 58m
Mon 10/195:53 pm -
2 stops17h 52m
Deal found 9/9![Frontier logo]()
$389
This FlightHub deal was found by Cheapflights users on 9/11. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/47:55 pm -
1 stop18h 51m
Mon 11/912:14 pm -
1 stop10h 31m
Deal found 9/11![Frontier logo]()
$390
This Kiwi.com deal was found by Cheapflights users on 9/11. 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.
Sat 10/38:40 am -
1 stop9h 37m
Wed 10/72:29 pm -
2 stops30h 16m
Deal found 9/11![Multiple Airlines logo]()
$391
This Kiwi.com deal was found by Cheapflights users on 9/9. 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.
Fri 10/238:40 am -
1 stop9h 35m
Fri 10/306:44 pm -
2 stops27h 26m
Deal found 9/9![Multiple Airlines logo]()
$445
Best flights from Mexico City to St. LouisDiscover carefully curated flight deals from Mexico City to St. Louis that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated September 12, 2026.
Discover carefully curated flight deals from Mexico City to St. Louis that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated September 12, 2026.
This Kiwi.com deal was found by Cheapflights users on 9/9. 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.
Sat 10/38:40 am -
1 stop9h 37m
Wed 10/712:17 pm -
1 stop10h 28m
Deal found 9/9![Multiple Airlines logo]()
$437
This OneTravel deal was found by Cheapflights users on 9/8. 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 OneTravel is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/2311:05 am -
1 stop11h 08m
Fri 10/306:20 am -
1 stop11h 25m
Deal found 9/8![Volaris logo]()
$489
This United Airlines deal was found by Cheapflights users on 9/9. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/152:10 pm -
1 stop7h 49m
Mon 10/199:00 am -
1 stop13h 10m
Deal found 9/9![United Airlines logo]()
$589
This Delta deal was found by Cheapflights users on 9/10. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/231:55 pm -
2 stops10h 41m
Sat 1/27:05 am -
1 stop13h 15m
Deal found 9/10![Delta logo]()
$595
This CheapOair deal was found by Cheapflights users on 9/12. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/312:40 am -
2 stops17h 00m
Mon 11/96:44 pm -
2 stops23h 21m
Deal found 9/12![Frontier logo]()
$608
This Kiwi.com deal was found by Cheapflights users on 9/9. 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.
Fri 10/238:40 am -
1 stop9h 35m
Fri 10/307:59 pm -
1 stop22h 01m
Deal found 9/9![Multiple Airlines logo]()
$525
Last-minute flights from Mexico City to St. LouisDiscover last-minute flight deals from Mexico City to St. Louis. Data last updated September 12, 2026 and is based on user searches.
Discover last-minute flight deals from Mexico City to St. Louis. Data last updated September 12, 2026 and is based on user searches.
This Kiwi.com deal was found by Cheapflights users on 9/11. 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.
Sat 10/38:40 am -
1 stop9h 37m
Wed 10/72:29 pm -
2 stops30h 16m
Deal found 9/11![Multiple Airlines logo]()
$391
This Kiwi.com deal was found by Cheapflights users on 9/11. 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.
Fri 10/98:45 pm -
1 stop16h 40m
Mon 10/126:35 pm -
2 stops28h 40m
Deal found 9/11![Multiple Airlines logo]()
$381
This Frontier deal was found by Cheapflights users on 9/9. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/157:00 am -
1 stop8h 58m
Mon 10/195:53 pm -
2 stops17h 52m
Deal found 9/9![Frontier logo]()
$389
This Kiwi.com deal was found by Cheapflights users on 9/9. 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.
Fri 10/238:40 am -
1 stop9h 35m
Fri 10/306:44 pm -
2 stops27h 26m
Deal found 9/9![Multiple Airlines logo]()
$445
One-way flights from Mexico City to St. LouisSearch for one-way flight options from Mexico City to St. Louis. Find affordable one-way fares based on user searches. Data last updated September 12, 2026.
Search for one-way flight options from Mexico City to St. Louis. Find affordable one-way fares based on user searches. Data last updated September 12, 2026.
This Kiwi.com deal was found by Cheapflights users on 9/8. 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 10/98:45 pm -
1 stop16h 40m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/8![Volaris logo]()
$235
This CheapOair deal was found by Cheapflights users on 9/8. 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.
Sun 10/1111:05 am -
1 stop11h 08m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/8![Volaris logo]()
$236
This CheapOair deal was found by Cheapflights users on 9/8. 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.
Mon 10/127:00 am -
1 stop8h 58m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/8![Volaris logo]()
$237
This Kiwi.com deal was found by Cheapflights users on 9/10. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/228:00 am -
1 stop27h 03m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/10![Multiple Airlines logo]()
$250
This Kiwi.com deal was found by Cheapflights users on 9/8. 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.
Mon 10/1210:50 pm -
3 stops41h 50m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/8![Multiple Airlines logo]()
$256
This Kiwi.com deal was found by Cheapflights users on 9/8. 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 10/1111:05 am -
2 stops29h 35m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/8![Multiple Airlines logo]()
$273
This Volaris deal was found by Cheapflights users on 9/10. 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 Volaris is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/198:40 am -
1 stop9h 37m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/10![Volaris logo]()
$298
This Kiwi.com deal was found by Cheapflights users on 9/9. 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.
Sun 9/276:20 am -
2 stops29h 50m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/9![Multiple Airlines logo]()
$310
Find 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 September 12, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $381 (Kiwi.com) |
One-way from | $235 (Kiwi.com) |
Popular in | April |
Cheapest in | May |
Average price | $589 |
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 7,457,451 searches. Data last updated September 12, 2026.
Use the filters below to find and compare flights from Mexico City to St. Louis that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
Mexico CitySt. Louis
MEX Mexico City Benito Juarez - STL Lambert-St Louis
MEXSTL
Mexico City Benito Juarez
Sun 11/22
8:00 am-11:03 am
1 stop27h 03m
Lambert-St Louis
Wed 12/31
12:00 am-12:00 am
Nonstop0h 00m
$250
Mexico CitySt. Louis
MEX Mexico City Benito Juarez - STL Lambert-St Louis
MEXSTL
Mexico City Benito Juarez
Mon 10/12
10:50 pm-5:40 pm
3 stops41h 50m
Lambert-St Louis
Wed 12/31
12:00 am-12:00 am
Nonstop0h 00m
$256
Quickest round-trip
Mexico CitySt. Louis
MEX Mexico City Benito Juarez - STL Lambert-St Louis
MEXSTL
Mexico City Benito Juarez
Sat 9/19
8:40 am-7:17 pm
1 stop9h 37m
Lambert-St Louis
Wed 12/31
12:00 am-12:00 am
Nonstop0h 00m
$298
Mexico CitySt. Louis
MEX Mexico City Benito Juarez - STL Lambert-St Louis
MEXSTL
Mexico City Benito Juarez
Tue 12/29
11:10 am-12:41 am
1 stop13h 31m
Lambert-St Louis
Wed 12/31
12:00 am-12:00 am
Nonstop0h 00m
$358
Mexico CitySt. Louis
MEX Mexico City Benito Juarez - STL Lambert-St Louis
MEXSTL
Mexico City Benito Juarez
Sat 9/19
11:55 am-9:35 am
2 stops20h 40m
Lambert-St Louis
Wed 12/31
12:00 am-12:00 am
Nonstop0h 00m
$375
Mexico CitySt. Louis
MEX Mexico City Benito Juarez - STL Lambert-St Louis
MEXSTL
Mexico City Benito Juarez
Sat 10/3
8:40 am-7:17 pm
1 stop9h 37m
Lambert-St Louis
Wed 10/7
12:17 pm-9:45 pm
1 stop10h 28m
$437
Mexico CitySt. Louis
MEX Mexico City Benito Juarez - STL Lambert-St Louis
MEXSTL
Mexico City Benito Juarez
Fri 10/23
11:05 am-11:13 pm
1 stop11h 08m
Lambert-St Louis
Fri 10/30
6:20 am-4:45 pm
1 stop11h 25m
$489
Mexico CitySt. Louis
MEX Mexico City Benito Juarez - STL Lambert-St Louis
MEXSTL
Mexico City Benito Juarez
Fri 10/23
8:40 am-7:15 pm
1 stop9h 35m
Lambert-St Louis
Fri 10/30
7:59 pm-5:00 pm
1 stop22h 01m
$525
Mexico CitySt. Louis
MEX Mexico City Benito Juarez - STL Lambert-St Louis
MEXSTL
Mexico City Benito Juarez
Thu 10/15
2:10 pm-10:59 pm
1 stop7h 49m
Lambert-St Louis
Mon 10/19
9:00 am-9:10 pm
1 stop13h 10m
$589
Mexico CitySt. Louis
MEX Mexico City Benito Juarez - STL Lambert-St Louis
MEXSTL
Mexico City Benito Juarez
Wed 12/23
1:55 pm-12:36 am
2 stops10h 41m
Lambert-St Louis
Sat 1/2
7:05 am-8:20 pm
1 stop13h 15m
$595
Showing 1-10 of 11 resultsSorted by cheapest first
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 September.
| Provider | Price Accuracy | Trust Score* |
|---|---|---|
| Price Accuracy1 star | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars |
- Most accurate provider: When it comes to deals on Mexico City-St. Louis flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Mexico City-St. Louis flight deals on Cheapflights vs. FlightHub >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 FlightHub the most. FlightHub 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.
MEX-STL
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
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 September 12, 2026.
Peruse reviews from past customers who have flown with Delta and 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.
Food
7.2
Crew
8.5
Entertainment
7.8
Boarding
8.1
Comfort
7.8
Overall
7.8
Reviews
1 / 20
8.0
ExcellentElizabeth,Sep 2023
MEX - ATL
Food
7.2
Crew
8.5
Entertainment
7.8
Boarding
8.1
Comfort
7.8
Overall
7.8
Reviews
1 / 20
8.0
ExcellentElizabeth,Sep 2023
MEX - ATL
Food
7.2
Crew
8.5
Entertainment
7.8
Boarding
8.1
Comfort
7.8
Overall
7.8
Reviews
1 / 20
8.0
ExcellentElizabeth,Sep 2023
MEX - ATL
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.
Traveling to a place near St. Louis?
Book flights to St. Louis if you plan to visit one of these locationsFairview Heights
O'Fallon
Fenton
Swansea
Eureka
Maryland Heights
Collinsville
Wentzville
Edwardsville
Glencoe
Chesterfield
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Complete your trip
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Find flights from Mexico City to St. Louis, based on your preferred cabin class, be it economy, premium economy, business, or first class.
Mexico City and St. Louis flights
Browse other Mexico City and St. Louis flight options. Last updated on September 12, 2026.
Other flights from Mexico City
Browse through other flights departing from Mexico City. Flights are based on user searches made on Cheapflights and were last updated on September 12, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
Other flights to St. Louis
Explore flights to St. Louis departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on September 12, 2026.
Top 2 airlines flying from Mexico City to St. Louis
Discover the top 2 airlines 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 7,457,451 searches. Data last updated September 12, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$466 | Average$626 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$521 | Average$676 | FlexibilityNo cancel fee | On-timeN/A |