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Cheap flights from Mexico City to St. Louis from $244

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Mexico City to St. Louis departing on 5/5. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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Find the cheapest flights from Mexico City to St. Louis

Cheap round-trip flights

KAYAK's recommended round-trip deals from the most popular airlines that fly from Mexico City to St. Louis.
11:05 am - 12:04 amMEX-STL
11h 59m1 stop
6:58 pm - 10:40 pmSTL-MEX
28h 42m2 stops
Sat, Apr 26 - Wed, Apr 30
11:05 am - 12:04 amMEX-STL
11h 59m1 stop
6:58 pm - 9:20 pmSTL-MEX
27h 22m2 stops
Sat, Apr 26 - Wed, Apr 30
11:05 am - 12:04 amMEX-STL
11h 59m1 stop
9:55 pm - 9:10 pmSTL-MEX
24h 15m1 stop
$405Frontier
Find Deal
Fri, Apr 25 - Mon, May 5
11:05 am - 12:04 amMEX-STL
11h 59m1 stop
9:55 pm - 5:30 pmSTL-MEX
20h 35m2 stops
$423Frontier
Find Deal
Fri, Apr 25 - Mon, May 5
6:50 am - 11:36 pmMEX-STL
15h 46m2 stops
12:46 pm - 10:00 pmSTL-MEX
10h 14m2 stops
$465Aeromexico
Find Deal
Sat, Apr 26 - Wed, Apr 30
2:15 pm - 9:56 amMEX-STL
18h 41m1 stop
5:55 pm - 1:15 pmSTL-MEX
20h 20m1 stop
$483United Airlines
Find Deal
Fri, May 16 - Fri, May 23
3:25 pm - 11:39 pmMEX-STL
7h 14m1 stop
11:51 am - 6:30 pmSTL-MEX
7h 39m1 stop
$499Aeromexico
Find Deal
Wed, Sep 24 - Tue, Sep 30
4:40 am - 2:37 pmMEX-STL
8h 57m2 stops
1:42 pm - 11:10 pmSTL-MEX
10h 28m2 stops
$518United Airlines
Find Deal
Thu, Aug 7 - Sat, Aug 16
9:55 am - 9:36 pmMEX-STL
10h 41m2 stops
6:00 am - 11:50 amSTL-MEX
6h 50m1 stop
$535Delta
Find Deal
Mon, Apr 28 - Wed, Apr 30
7:05 am - 4:26 pmMEX-STL
8h 21m1 stop
7:10 am - 1:55 pmSTL-MEX
7h 45m1 stop
$617Delta
Find Deal
Mon, Apr 28 - Wed, Apr 30

Frontier flights from Mexico City to St. Louis

Our best Frontier deals on Mexico City to St. Louis flight tickets
Frontier
Apr 25
MEX11:05 amMexico City Benito Juarez
11h 59m
1 stop
STL12:04 amLambert-St Louis
May 5
STL9:55 pmLambert-St Louis
24h 15m
1 stop
MEX9:10 pmMexico City Benito Juarez
Frontier
Apr 25
MEX11:05 amMexico City Benito Juarez
11h 59m
1 stop
STL12:04 amLambert-St Louis
May 5
STL9:55 pmLambert-St Louis
20h 35m
2 stops
MEX5:30 pmMexico City Benito Juarez
Frontier
Apr 26
MEX11:05 amMexico City Benito Juarez
11h 59m
1 stop
STL12:04 amLambert-St Louis
Apr 28
STL6:00 amLambert-St Louis
12h 20m
1 stop
MEX5:20 pmMexico City Benito Juarez

Aeromexico flights from Mexico City to St. Louis

Our best Aeromexico deals on Mexico City to St. Louis flight tickets
Aeromexico
Apr 26
MEX6:50 amMexico City Benito Juarez
15h 46m
2 stops
STL11:36 pmLambert-St Louis
Apr 30
STL12:46 pmLambert-St Louis
10h 14m
2 stops
MEX10:00 pmMexico City Benito Juarez
Aeromexico
Sep 24
MEX3:25 pmMexico City Benito Juarez
7h 14m
1 stop
STL11:39 pmLambert-St Louis
Sep 30
STL11:51 amLambert-St Louis
7h 39m
1 stop
MEX6:30 pmMexico City Benito Juarez
Aeromexico
Apr 27
MEX7:05 amMexico City Benito Juarez
13h 31m
2 stops
STL9:36 pmLambert-St Louis
Apr 30
STL12:46 pmLambert-St Louis
10h 14m
2 stops
MEX10:00 pmMexico City Benito Juarez

See travel insights to St. Louis from

How to get the cheapest flight ticket from Mexico City to St. Louis

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest month to fly to St. Louis?

In general, August is the cheapest month to fly from Mexico City to St. Louis. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $502. The month of June is another great option to travel to St. Louis, with average flight prices from Mexico City averaging around $510.

What is the cheapest day to depart on your flight to St. Louis?

The cheapest day to depart on your flight to St. Louis is on a Wednesday when prices can be found for as low as $465. This is often the case because there is less demand to fly during this day of the week. If your travel schedule is flexible, try to avoid departing on a Saturday because tickets tend to average around $778. These prices are subject to change though, so be sure to set up a Price Alert for flights to St. Louis.

What is the cheapest time of day to depart on your flight to St. Louis?

Flying to St. Louis from Mexico City at noon is the least expensive time of day to depart. momondo users have found prices as low as $465 when looking at flights departing at noon. In the afternoon is when there is more demand to fly to St. Louis, so prices are often more expensive at around $695 per ticket.

How have Mexico City to St. Louis flight prices changed over time?

As of April 2025, prices for Mexico City to St. Louis flights are approximately 2% more expensive when compared to flights at the same time last year.

When to book flights from Mexico City to St. Louis

Are you open to changing your travel dates? Check out the ideal times to fly from Mexico City to St. Louis according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap Mexico City to St. Louis (MEX to STL) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Mexico City to St. Louis

Best Price Found

$244

Fastest flight time

7h 00m

Direct flights

None

Airports in St. Louis

1 airport
The best one-way flight to St. Louis from Mexico City in the past 72 hours is $244. The best round-trip flight deal from Mexico City to St. Louis found on momondo in the last 72 hours is $372.
The fastest flight from Mexico City to St. Louis takes 7h 00m
There are no direct flights from Mexico City to St. Louis. Popular non-direct route for this connection is Mexico City Benito Juarez Airport - Lambert-St Louis Airport.
There is 1 airport near St. Louis: Lambert-St Louis (STL)

  • How far is Mexico City Benito Juarez to Lambert-St Louis by plane?

    The distance between Mexico City Benito Juarez and Lambert-St Louis is about 1430.3 mi. A reasonable flight in good conditions will take 7h 00m.

  • When did momondo last update prices for flights from Mexico City Benito Juarez Airport to Lambert-St Louis Airport?

    Prices for flights from Mexico City Benito Juarez Airport to Lambert-St Louis Airport were last updated today.

  • How old do you have to be to fly from Mexico City Benito Juarez Airport to Lambert-St Louis Airport?

    The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Mexico City Benito Juarez Airport to Lambert-St Louis Airport.

  • What documentation or ID do you need to fly to Lambert-St Louis Airport?

    The travel and health documents required for your trip to Lambert-St Louis Airport can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Lambert-St Louis Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.


Traveling to a place near St. Louis?

Book flights to St. Louis if you plan to visit one of these locations
St. Charles
Chesterfield
Florissant
Fairview Heights
Maryland Heights
Hermann
Collinsville
Fenton
Farmington
O'Fallon
St. Peters
Wentzville
Alton
Glencoe
Eureka
Festus
Edwardsville
Clayton
Grafton
Litchfield

Why use momondo?

Why should I use momondo to find a flight deal from Mexico City to St. Louis?

Finding the right flight to St. Louis from Mexico City is quick and easy when you have a range of options in front of you, from reputable agents and recognisable airlines. Options that can then be filtered down to find the best fit. That is what momondo does. We make finding flights to St. Louis quick and easy, saving you time and money.

Can I find flights from Mexico City to St. Louis with flexible booking policies on momondo?

Yes. All flights to St. Louis from Mexico City on momondo can be compared and filtered by various policies on offer, including flexible booking.

How can momondo help me find flights from Mexico City to St. Louis?

momondo provides multiple filters to help you find the best flight to St. Louis from Mexico City. Filter by price, airline, airports, cabin, aircraft, payment method, number of stops and more.

I’m not ready to book a flight from Mexico City to St. Louis right now. Can momondo alert me if prices change?

Of course. momondo tracks the price of Mexico City to St. Louis flights. All you need is a valid email address and we will do the rest; it is that quick and easy.


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