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Cheap flights from Mexico City to St. Louis from $219

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 10/17. 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

Multiple Airlines Logo
7:00 am - 5:27 pmMEX-STL
9h 27m1 stop
Multiple Airlines Logo
6:22 pm - 10:30 pmSTL-MEX
28h 08m1 stop
$342Multiple Airlines
Find Deal
jue., oct. 30 - jue., nov. 6
Multiple Airlines Logo
10:00 pm - 3:26 pmMEX-STL
17h 26m1 stop
Multiple Airlines Logo
6:05 am - 11:40 pmSTL-MEX
17h 35m1 stop
$359Multiple Airlines
Find Deal
mar., dic. 9 - mar., ene. 13
Frontier Logo
7:00 am - 5:27 pmMEX-STL
9h 27m1 stop
Frontier Logo
11:07 am - 10:00 pmSTL-MEX
10h 53m2 stops
$369Frontier
Find Deal
jue., oct. 30 - jue., nov. 6
Frontier Logo
8:10 am - 9:07 amMEX-STL
23h 57m1 stop
Frontier Logo
12:20 pm - 10:30 pmSTL-MEX
10h 10m1 stop
$425Frontier
Find Deal
dom., oct. 26 - dom., nov. 2
Delta Logo
8:40 am - 4:07 pmMEX-STL
7h 27m1 stop
Delta Logo
10:00 am - 8:05 pmSTL-MEX
10h 05m2 stops
$500Delta
Find Deal
mar., dic. 9 - lun., ene. 12
Aeromexico Logo
10:30 am - 9:58 pmMEX-STL
11h 28m2 stops
Aeromexico Logo
6:00 am - 7:25 pmSTL-MEX
13h 25m2 stops
$504Aeromexico
Find Deal
mar., dic. 9 - mar., ene. 13
Delta Logo
6:45 am - 7:14 pmMEX-STL
12h 29m2 stops
Delta Logo
12:10 pm - 9:05 pmSTL-MEX
9h 55m2 stops
$521Delta
Find Deal
sáb., ene. 17 - mar., mar. 31
Aeromexico Logo
10:30 am - 8:46 pmMEX-STL
10h 16m2 stops
Aeromexico Logo
6:00 am - 8:50 pmSTL-MEX
14h 50m1 stop
$524Aeromexico
Find Deal
lun., dic. 1 - sáb., feb. 28
United Airlines Logo
11:25 am - 9:54 pmMEX-STL
9h 29m2 stops
United Airlines Logo
1:35 pm - 12:10 amSTL-MEX
10h 35m2 stops
$573United Airlines
Find Deal
vie., oct. 31 - vie., nov. 7
United Airlines Logo
5:45 am - 9:55 pmMEX-STL
16h 10m1 stop
United Airlines Logo
6:35 pm - 10:05 amSTL-MEX
15h 30m2 stops
$645United Airlines
Find Deal
jue., ene. 1 - dom., ene. 4

Delta flights from Mexico City to St. Louis

Our best Delta deals on Mexico City to St. Louis flight tickets
Delta
Dec 9
MEX8:40 amMexico City Benito Juarez
7h 27m
1 stop
STL4:07 pmLambert-St Louis
Jan 12
STL10:00 amLambert-St Louis
10h 05m
2 stops
MEX8:05 pmMexico City Benito Juarez
$500
Find similar
Delta
Jan 17
MEX6:45 amMexico City Benito Juarez
12h 29m
2 stops
STL7:14 pmLambert-St Louis
Mar 31
STL12:10 pmLambert-St Louis
9h 55m
2 stops
MEX9:05 pmMexico City Benito Juarez
$521
Find similar
Delta
Oct 26
MEX7:00 amMexico City Benito Juarez
12h 23m
2 stops
STL8:23 pmLambert-St Louis
Nov 2
STL5:40 amLambert-St Louis
12h 15m
2 stops
MEX5:55 pmMexico City Benito Juarez
$542
Find similar

Aeromexico flights from Mexico City to St. Louis

Our best Aeromexico deals on Mexico City to St. Louis flight tickets
Aeromexico
Dec 9
MEX10:30 amMexico City Benito Juarez
11h 28m
2 stops
STL9:58 pmLambert-St Louis
Jan 13
STL6:00 amLambert-St Louis
13h 25m
2 stops
MEX7:25 pmMexico City Benito Juarez
$504
Find similar
Aeromexico
Dec 1
MEX10:30 amMexico City Benito Juarez
10h 16m
2 stops
STL8:46 pmLambert-St Louis
Feb 28
STL6:00 amLambert-St Louis
14h 50m
1 stop
MEX8:50 pmMexico City Benito Juarez
$524
Find similar
Aeromexico
Mar 3
MEX12:40 pmMexico City Benito Juarez
11h 00m
1 stop
STL11:40 pmLambert-St Louis
Mar 4
STL6:00 amLambert-St Louis
11h 30m
2 stops
MEX5:30 pmMexico City Benito Juarez
$556
Find similar

momondo 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, momondo users made 832,500 searches. Data last updated septiembre 17, 2025.
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

Price

Mexico CitySt. Louis

MEX - STL

MEXSTL

Mexico City Benito Juarez

jue. 10/30

7:00 am-5:27 pm

1 stop9h 27m

Lambert-St Louis

jue. 11/6

6:22 pm-10:30 pm

1 stop28h 08m

$342

Mexico CitySt. Louis

MEX - STL

MEXSTL

Mexico City Benito Juarez

mar. 12/9

10:00 pm-3:26 pm

1 stop17h 26m

Lambert-St Louis

mar. 1/13

6:05 am-11:40 pm

1 stop17h 35m

$359

Mexico CitySt. Louis

MEX - STL

MEXSTL

Mexico City Benito Juarez

jue. 10/30

7:00 am-5:27 pm

1 stop9h 27m

Lambert-St Louis

jue. 11/6

11:07 am-10:00 pm

2 stops10h 53m

$369

Mexico CitySt. Louis

MEX - STL

MEXSTL

Mexico City Benito Juarez

dom. 10/26

8:10 am-9:07 am

1 stop23h 57m

Lambert-St Louis

dom. 11/2

12:20 pm-10:30 pm

1 stop10h 10m

$425

Mexico CitySt. Louis

MEX - STL

MEXSTL

Mexico City Benito Juarez

mar. 12/9

8:40 am-4:07 pm

1 stop7h 27m

Lambert-St Louis

lun. 1/12

10:00 am-8:05 pm

2 stops10h 05m

$500

Mexico CitySt. Louis

MEX - STL

MEXSTL

Mexico City Benito Juarez

mar. 12/9

10:30 am-9:58 pm

2 stops11h 28m

Lambert-St Louis

mar. 1/13

6:00 am-7:25 pm

2 stops13h 25m

$504

Mexico CitySt. Louis

MEX - STL

MEXSTL

Mexico City Benito Juarez

sáb. 1/17

6:45 am-7:14 pm

2 stops12h 29m

Lambert-St Louis

mar. 3/31

12:10 pm-9:05 pm

2 stops9h 55m

$521

Mexico CitySt. Louis

MEX - STL

MEXSTL

Mexico City Benito Juarez

lun. 12/1

10:30 am-8:46 pm

2 stops10h 16m

Lambert-St Louis

sáb. 2/28

6:00 am-8:50 pm

1 stop14h 50m

$524

Mexico CitySt. Louis

MEX - STL

MEXSTL

Mexico City Benito Juarez

vie. 10/31

11:25 am-9:54 pm

2 stops9h 29m

Lambert-St Louis

vie. 11/7

1:35 pm-12:10 am

2 stops10h 35m

$573

Mexico CitySt. Louis

MEX - STL

MEXSTL

Mexico City Benito Juarez

jue. 1/1

5:45 am-9:55 pm

1 stop16h 10m

Lambert-St Louis

dom. 1/4

6:35 pm-10:05 am

2 stops15h 30m

$645

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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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, March 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 $449. The month of September is another great option to travel to St. Louis, with average flight prices from Mexico City averaging around $507.

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 September 2025, prices for Mexico City to St. Louis flights are approximately 35% 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

Direct flights

None
There are no direct flights from Mexico City to St. Louis. There are no popular flight routes from Mexico City to St. Louis.
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  • 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 6h 30m.

  • 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 many operators does momondo search for flights from Mexico City Benito Juarez Airport to Lambert-St Louis Airport?

  • 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.

  • What is the most popular airline from Mexico City to St. Louis?

Best airlines flying from Mexico City to St. Louis

Compare and see reviews for airlines that fly from Mexico City to St. Louis with momondo
Airline
Rating
Free Cancellation
Price
United AirlinesPriceFrom $491Free CancellationRating
7.4
8,926 reviews
Search United Airlines flights

Traveling to a place near St. Louis?

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

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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