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Cheap flights from St. Louis to Mexico City from $189

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from St. Louis to Mexico City departing on 8/20. 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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0 bags

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Find the cheapest flights from St. Louis to Mexico City

Cheap round-trip flights

Logo
9:47 am - 10:55 pmSTL-MEX
14h 08m1 stop
Logo
8:10 am - 9:07 amMEX-STL
23h 57m1 stop
$431
Find Deal
Thu, Oct 9 - Tue, Oct 14
Logo
7:52 pm - 5:00 pmSTL-MEX
22h 08m1 stop
Logo
3:10 pm - 8:52 amMEX-STL
16h 42m1 stop
$446
Find Deal
Wed, Oct 15 - Wed, Oct 22
Logo
10:49 am - 10:55 pmSTL-MEX
13h 06m1 stop
Logo
8:10 am - 9:06 amMEX-STL
23h 56m1 stop
$449
Find Deal
Thu, Sep 11 - Mon, Sep 15
Logo
10:49 am - 10:55 pmSTL-MEX
13h 06m1 stop
Logo
8:10 am - 9:06 amMEX-STL
23h 56m1 stop
$455
Find Deal
Thu, Sep 11 - Thu, Sep 18
Logo
7:54 pm - 5:00 pmSTL-MEX
22h 06m1 stop
Logo
3:10 pm - 9:54 amMEX-STL
17h 44m1 stop
$461
Find Deal
Sun, Aug 31 - Sat, Sep 6
Frontier Logo
10:26 am - 11:20 pmSTL-MEX
13h 54m1 stop
Frontier Logo
6:45 am - 6:09 pmMEX-STL
10h 24m1 stop
$478Frontier
Find Deal
Wed, Aug 20 - Tue, Sep 2
Frontier Logo
10:21 am - 11:20 pmSTL-MEX
13h 59m1 stop
Frontier Logo
11:15 pm - 6:10 pmMEX-STL
17h 55m1 stop
$479Frontier
Find Deal
Sat, Sep 6 - Sat, Sep 13
American Airlines Logo
7:58 pm - 1:20 pmSTL-MEX
17h 22m1 stop
American Airlines Logo
2:20 pm - 11:56 pmMEX-STL
9h 36m1 stop
$541American Airlines
Find Deal
Thu, Nov 6 - Fri, Nov 14
Delta Logo
7:30 am - 7:50 pmSTL-MEX
12h 20m2 stops
Delta Logo
1:30 pm - 12:37 amMEX-STL
11h 07m2 stops
$545Delta
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Thu, Jan 22 - Mon, Jan 26
Delta Logo
6:00 am - 7:20 pmSTL-MEX
13h 20m1 stop
Delta Logo
8:40 am - 6:02 pmMEX-STL
9h 22m1 stop
$561Delta
Find Deal
Fri, Nov 21 - Tue, Nov 25

Frontier flights from St. Louis to Mexico City

Our best Frontier deals on St. Louis to Mexico City flight tickets
Frontier
Aug 20
STL10:26 amLambert-St Louis
13h 54m
1 stop
MEX11:20 pmMexico City Benito Juarez
Sep 2
MEX6:45 amMexico City Benito Juarez
10h 24m
1 stop
STL6:09 pmLambert-St Louis
$478
Find similar
Frontier
Sep 6
STL10:21 amLambert-St Louis
13h 59m
1 stop
MEX11:20 pmMexico City Benito Juarez
Sep 13
MEX11:15 pmMexico City Benito Juarez
17h 55m
1 stop
STL6:10 pmLambert-St Louis
$479
Find similar
Frontier
Aug 12
STL6:45 amLambert-St Louis
24h 00m
1 stop
MEX5:45 amMexico City Benito Juarez
Aug 16
MEX11:05 amMexico City Benito Juarez
11h 42m
1 stop
STL11:47 pmLambert-St Louis
$498
Find similar

Delta flights from St. Louis to Mexico City

Our best Delta deals on St. Louis to Mexico City flight tickets
Delta
Jan 22
STL7:30 amLambert-St Louis
12h 20m
2 stops
MEX7:50 pmMexico City Benito Juarez
Jan 26
MEX1:30 pmMexico City Benito Juarez
11h 07m
2 stops
STL12:37 amLambert-St Louis
$545
Find similar
Delta
Nov 21
STL6:00 amLambert-St Louis
13h 20m
1 stop
MEX7:20 pmMexico City Benito Juarez
Nov 25
MEX8:40 amMexico City Benito Juarez
9h 22m
1 stop
STL6:02 pmLambert-St Louis
$561
Find similar

momondo 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, momondo users made 832,500 searches. Data last updated July 31, 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

Thu 10/9

9:47 am-10:55 pm

1 stop14h 08m

Mexico City Benito Juarez

Tue 10/14

8:10 am-9:07 am

1 stop23h 57m

$431

St. LouisMexico City

STL - MEX

STLMEX

Lambert-St Louis

Wed 10/15

7:52 pm-5:00 pm

1 stop22h 08m

Mexico City Benito Juarez

Wed 10/22

3:10 pm-8:52 am

1 stop16h 42m

$446

St. LouisMexico City

STL - MEX

STLMEX

Lambert-St Louis

Thu 9/11

10:49 am-10:55 pm

1 stop13h 06m

Mexico City Benito Juarez

Mon 9/15

8:10 am-9:06 am

1 stop23h 56m

$449

St. LouisMexico City

STL - MEX

STLMEX

Lambert-St Louis

Thu 9/11

10:49 am-10:55 pm

1 stop13h 06m

Mexico City Benito Juarez

Thu 9/18

8:10 am-9:06 am

1 stop23h 56m

$455

St. LouisMexico City

STL - MEX

STLMEX

Lambert-St Louis

Sun 8/31

7:54 pm-5:00 pm

1 stop22h 06m

Mexico City Benito Juarez

Sat 9/6

3:10 pm-9:54 am

1 stop17h 44m

$461

St. LouisMexico City

STL - MEX

STLMEX

Lambert-St Louis

Wed 8/20

10:26 am-11:20 pm

1 stop13h 54m

Mexico City Benito Juarez

Tue 9/2

6:45 am-6:09 pm

1 stop10h 24m

$478

St. LouisMexico City

STL - MEX

STLMEX

Lambert-St Louis

Sat 9/6

10:21 am-11:20 pm

1 stop13h 59m

Mexico City Benito Juarez

Sat 9/13

11:15 pm-6:10 pm

1 stop17h 55m

$479

St. LouisMexico City

STL - MEX

STLMEX

Lambert-St Louis

Thu 11/6

7:58 pm-1:20 pm

1 stop17h 22m

Mexico City Benito Juarez

Fri 11/14

2:20 pm-11:56 pm

1 stop9h 36m

$541

St. LouisMexico City

STL - MEX

STLMEX

Lambert-St Louis

Thu 1/22

7:30 am-7:50 pm

2 stops12h 20m

Mexico City Benito Juarez

Mon 1/26

1:30 pm-12:37 am

2 stops11h 07m

$545

St. LouisMexico City

STL - MEX

STLMEX

Lambert-St Louis

Fri 11/21

6:00 am-7:20 pm

1 stop13h 20m

Mexico City Benito Juarez

Tue 11/25

8:40 am-6:02 pm

1 stop9h 22m

$561

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 Mexico City from

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

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 Mexico City?

The cheapest month to fly to Mexico City from St. Louis is in September. Flight prices, which tend to average around $541, are often lower during this time because this is during the off-season. If you aren’t able to travel during the month of September, then book flights to Mexico City from St. Louis during August instead. Flights to Mexico City in August, while not as cheap as those in September, still average around $558.

What is the cheapest day to depart on your flight to Mexico City?

Our data shows that Tuesday is the least expensive day to fly to Mexico City. Tickets to fly out on this day can be as low as $542. On the other hand, Saturday is the most expensive day to depart from St. Louis because it is more convenient for both business and leisure travelers. As a result, prices tend to be around $669.

What is the cheapest time of day to depart on your flight to Mexico City?

According to our data, the cheapest time of day to fly to Mexico City is at noon. momondo users have found flights departing from St. Louis to Mexico City at noon for as low as $566. Keep in mind that these prices may fluctuate based on what airline you choose and the time of year you plan to travel. In the afternoon is when there is more demand to fly to Mexico City, so prices are often more expensive at around $621 per ticket.

How far in advance should I book a flight to Mexico City?

You are more likely to see cheaper flights to Mexico City from St. Louis when booking weeks ahead of your departure date. In general, you can expect to find flights to Mexico City for around $628 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Mexico City from St. Louis for as low as $496 on momondo.

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

As of July 2025, prices for St. Louis to Mexico City flights are approximately 130% more expensive when compared to flights at the same time last year.

When to book flights from St. Louis to Mexico City

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

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

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

Best Price Found

$189

Fastest flight time

6h 49m

Direct flights

None

Airports in Mexico City

1 airport
The best one-way flight to Mexico City from St. Louis in the past 72 hours is $189. The best round-trip flight deal from St. Louis to Mexico City found on momondo in the last 72 hours is $431.
The fastest flight from St. Louis to Mexico City takes 6h 49m
There are no direct flights from St. Louis to Mexico City. Popular non-direct route for this connection is Lambert-St Louis Airport - Mexico City Benito Juarez Airport.
There is 1 airport near Mexico City: Mexico City Benito Juarez (MEX)
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  • How far is Lambert-St Louis to Mexico City Benito Juarez by plane?

    There are 1430.3 mi between Lambert-St Louis and Mexico City Benito Juarez. By plane, this route typically takes 11h 05m.

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

    Prices for flights from Lambert-St Louis Airport to Mexico City Benito Juarez Airport are updated daily.

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

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

    Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Lambert-St Louis Airport to Mexico City Benito Juarez Airport.

  • What documentation or ID do you need to fly to Mexico City Benito Juarez Airport?

    The travel and health documents you'll need for your trip to Mexico City Benito Juarez Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Mexico City Benito Juarez Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

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

Best airlines flying from St. Louis to Mexico City

Compare and see reviews for airlines that fly from St. Louis to Mexico City with momondo
Airline
Rating
Free Cancellation
Price
FrontierPriceFrom $471Free CancellationRating
5.9
3,239 reviews
Search Frontier flights
AeromexicoPriceFrom $487Free CancellationRating
7.5
1,721 reviews
Search Aeromexico flights
DeltaPriceFrom $487Free CancellationRating
8.0
7,981 reviews
Search Delta flights
United AirlinesPriceFrom $525Free CancellationRating
7.4
8,900 reviews
Search United Airlines flights
American AirlinesPriceFrom $527Free CancellationRating
7.2
10,000 reviews
Search American Airlines flights

Traveling to a place near Mexico City?

Book flights to Mexico City if you plan to visit one of these locations
Cuernavaca
Taxco
Tepoztlán
Valle de Bravo

Why use momondo?

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

Finding the right flight to Mexico City from St. Louis 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 Mexico City quick and easy, saving you time and money.

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

Flights from St. Louis to Mexico City with flexible booking policies can be found by using the search form above and then selecting our dedicated flexible booking filter, which will highlight only the flights where this policy is applied.

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

Once all potential St. Louis to Mexico City flight options are in front of you, momondo lets you sort and filter flights based on preferences such as airline, price and flight times amongst many other options.

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

Yes momondo offers price alerts on flights to Mexico City from St. Louis. After performing a search on this page you should be able to see the price alert set up feature. Simply provide a valid email address and momondo will instantly alert you when prices change.

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Find better results for your trip to Mexico

Airports servicing Mexico City Federal District

Mexico City Toluca Intl Airport