Cheap flights from St. Louis to Mexico City from $152

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 12/6. 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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Multiple Airlines Logo
7:43 pm - 10:30 pmSTL-MEX
26h 47m2 stops
Multiple Airlines Logo
7:20 pm - 3:26 pmMEX-STL
20h 06m1 stop
$338Multiple Airlines
Find Deal
Fri, Jan 23 - Tue, Jan 27
Multiple Airlines Logo
7:43 pm - 7:45 pmSTL-MEX
24h 02m2 stops
Multiple Airlines Logo
11:10 am - 10:33 pmMEX-STL
11h 23m1 stop
$378Multiple Airlines
Find Deal
Mon, Feb 9 - Fri, Feb 20
Frontier Logo
7:43 pm - 5:05 pmSTL-MEX
21h 22m1 stop
Frontier Logo
11:55 am - 4:49 pmMEX-STL
28h 54m1 stop
$423Frontier
Find Deal
Wed, Feb 18 - Tue, Feb 24
Frontier Logo
10:42 am - 10:00 pmSTL-MEX
11h 18m2 stops
Frontier Logo
11:10 am - 10:33 pmMEX-STL
11h 23m1 stop
$449Frontier
Find Deal
Thu, Jan 22 - Sun, Feb 8
Volaris Logo
6:00 am - 5:15 pmSTL-MEX
11h 15m1 stop
Volaris Logo
6:40 am - 3:26 pmMEX-STL
8h 46m1 stop
$454Volaris
Find Deal
Thu, Jan 22 - Mon, Jan 26
Volaris Logo
6:00 am - 5:15 pmSTL-MEX
11h 15m1 stop
Volaris Logo
6:40 am - 3:26 pmMEX-STL
8h 46m1 stop
$458Volaris
Find Deal
Thu, Jan 22 - Mon, Jan 26
Air Canada Logo
4:05 pm - 12:50 amSTL-MEX
8h 45m1 stop
Air Canada Logo
1:05 am - 3:29 pmMEX-STL
14h 24m1 stop
$529Air Canada
Find Deal
Mon, Feb 16 - Thu, Feb 19
Air Canada Logo
4:05 pm - 12:30 pmSTL-MEX
20h 25m1 stop
Air Canada Logo
1:05 am - 3:29 pmMEX-STL
14h 24m1 stop
$530Air Canada
Find Deal
Wed, Jan 21 - Sat, Feb 7
Aeromexico Logo
7:10 am - 8:50 pmSTL-MEX
13h 40m1 stop
Aeromexico Logo
10:30 pm - 11:39 pmMEX-STL
25h 09m2 stops
$535Aeromexico
Find Deal
Wed, Jan 21 - Sun, Feb 8
Aeromexico Logo
6:00 am - 3:15 pmSTL-MEX
9h 15m1 stop
Aeromexico Logo
10:30 pm - 11:39 pmMEX-STL
25h 09m2 stops
$536Aeromexico
Find Deal
Wed, Jan 21 - Sun, Feb 8

Air Canada flights from St. Louis to Mexico City

Our best Air Canada deals on St. Louis to Mexico City flight tickets
Air Canada
Feb 16
STL4:05 pmLambert-St Louis
8h 45m
1 stop
MEX12:50 amMexico City Benito Juarez
Feb 19
MEX1:05 amMexico City Benito Juarez
14h 24m
1 stop
STL3:29 pmLambert-St Louis
Air Canada
Jan 21
STL4:05 pmLambert-St Louis
20h 25m
1 stop
MEX12:30 pmMexico City Benito Juarez
Feb 7
MEX1:05 amMexico City Benito Juarez
14h 24m
1 stop
STL3:29 pmLambert-St Louis
Air Canada
Nov 17
STL4:05 pmLambert-St Louis
8h 45m
1 stop
MEX12:50 amMexico City Benito Juarez
Nov 19
MEX1:30 pmMexico City Benito Juarez
25h 59m
1 stop
STL3:29 pmLambert-St Louis

Aeromexico flights from St. Louis to Mexico City

Our best Aeromexico deals on St. Louis to Mexico City flight tickets
Aeromexico
Jan 21
STL7:10 amLambert-St Louis
13h 40m
1 stop
MEX8:50 pmMexico City Benito Juarez
Feb 8
MEX10:30 pmMexico City Benito Juarez
25h 09m
2 stops
STL11:39 pmLambert-St Louis
Aeromexico
Jan 21
STL6:00 amLambert-St Louis
9h 15m
1 stop
MEX3:15 pmMexico City Benito Juarez
Feb 8
MEX10:30 pmMexico City Benito Juarez
25h 09m
2 stops
STL11:39 pmLambert-St Louis

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 November 4, 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

Fri 1/23

7:43 pm-10:30 pm

2 stops26h 47m

Mexico City Benito Juarez

Tue 1/27

7:20 pm-3:26 pm

1 stop20h 06m

$338

St. LouisMexico City

STL - MEX

STLMEX

Lambert-St Louis

Mon 2/9

7:43 pm-7:45 pm

2 stops24h 02m

Mexico City Benito Juarez

Fri 2/20

11:10 am-10:33 pm

1 stop11h 23m

$378

St. LouisMexico City

STL - MEX

STLMEX

Lambert-St Louis

Wed 2/18

7:43 pm-5:05 pm

1 stop21h 22m

Mexico City Benito Juarez

Tue 2/24

11:55 am-4:49 pm

1 stop28h 54m

$423

St. LouisMexico City

STL - MEX

STLMEX

Lambert-St Louis

Thu 1/22

10:42 am-10:00 pm

2 stops11h 18m

Mexico City Benito Juarez

Sun 2/8

11:10 am-10:33 pm

1 stop11h 23m

$449

St. LouisMexico City

STL - MEX

STLMEX

Lambert-St Louis

Thu 1/22

6:00 am-5:15 pm

1 stop11h 15m

Mexico City Benito Juarez

Mon 1/26

6:40 am-3:26 pm

1 stop8h 46m

$454

St. LouisMexico City

STL - MEX

STLMEX

Lambert-St Louis

Thu 1/22

6:00 am-5:15 pm

1 stop11h 15m

Mexico City Benito Juarez

Mon 1/26

6:40 am-3:26 pm

1 stop8h 46m

$458

St. LouisMexico City

STL - MEX

STLMEX

Lambert-St Louis

Mon 2/16

4:05 pm-12:50 am

1 stop8h 45m

Mexico City Benito Juarez

Thu 2/19

1:05 am-3:29 pm

1 stop14h 24m

$529

St. LouisMexico City

STL - MEX

STLMEX

Lambert-St Louis

Wed 1/21

4:05 pm-12:30 pm

1 stop20h 25m

Mexico City Benito Juarez

Sat 2/7

1:05 am-3:29 pm

1 stop14h 24m

$530

St. LouisMexico City

STL - MEX

STLMEX

Lambert-St Louis

Wed 1/21

7:10 am-8:50 pm

1 stop13h 40m

Mexico City Benito Juarez

Sun 2/8

10:30 pm-11:39 pm

2 stops25h 09m

$535

St. LouisMexico City

STL - MEX

STLMEX

Lambert-St Louis

Wed 1/21

6:00 am-3:15 pm

1 stop9h 15m

Mexico City Benito Juarez

Sun 2/8

10:30 pm-11:39 pm

2 stops25h 09m

$536

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 May instead. Flights to Mexico City in May, while not as cheap as those in September, still average around $564.

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 $647 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 November 2025, prices for St. Louis to Mexico City flights are approximately 1% cheaper 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

Direct flights

None
There are no direct flights from St. Louis to Mexico City. There are no popular flight routes from St. Louis to Mexico City.
  • 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 8h 45m.

  • 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
5.8
3,116 reviews
Search Frontier flights
AeromexicoPriceFrom $487Free CancellationRating
7.4
1,672 reviews
Search Aeromexico flights
DeltaPriceFrom $487Free CancellationRating
7.9
8,002 reviews
Search Delta flights
American AirlinesPriceFrom $527Free CancellationRating
7.2
11,038 reviews
Search American Airlines flights
United AirlinesPriceFrom $531Free CancellationRating
7.4
8,998 reviews
Search United Airlines flights

Traveling to a place near Mexico City?

Book flights to Mexico City if you plan to visit one of these locations
Cuernavaca
Tepoztlán
Taxco
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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Thu 12/4
Thu 12/11

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