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Cheap flights from St. Louis to Mexico City from $273

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 4/5. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
1 adult, Economy, 0 bags

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Find the cheapest flights from St. Louis to Mexico City

Cheap round-trip flights

Enter your travel dates to find the best prices.
Multiple Airlines Logo
9:58 pm - 5:30 pm
STL
-
MEX
20h 32m
2 stops
Multiple Airlines Logo
8:40 am - 7:23 pm
MEX
-
STL
9h 43m
1 stop
$385Multiple Airlines
Fri, Apr 24 - Sat, May 16
Multiple Airlines Logo
3:21 pm - 10:45 pm
STL
-
MEX
8h 24m
1 stop
Multiple Airlines Logo
7:00 am - 7:32 pm
MEX
-
STL
35h 32m
2 stops
$392Multiple Airlines
Mon, Apr 20 - Fri, Apr 24
Frontier Logo
3:21 pm - 10:45 pm
STL
-
MEX
8h 24m
1 stop
Frontier Logo
8:45 pm - 3:19 pm
MEX
-
STL
17h 34m
1 stop
$397Frontier
Mon, Apr 20 - Wed, Apr 22
Multiple Airlines Logo
8:08 pm - 5:30 pm
STL
-
MEX
22h 22m
1 stop
Multiple Airlines Logo
9:55 pm - 6:04 pm
MEX
-
STL
19h 09m
2 stops
$408Multiple Airlines
Fri, May 8 - Fri, May 15
Multiple Airlines Logo
3:21 pm - 10:45 pm
STL
-
MEX
8h 24m
1 stop
Multiple Airlines Logo
7:00 am - 9:00 pm
MEX
-
STL
37h 00m
2 stops
$409Multiple Airlines
Mon, Apr 20 - Wed, Apr 22
Frontier Logo
3:33 pm - 10:45 pm
STL
-
MEX
8h 12m
1 stop
Frontier Logo
8:40 am - 7:23 pm
MEX
-
STL
9h 43m
1 stop
$410Frontier
Thu, May 7 - Tue, May 26
Multiple Airlines Logo
4:59 pm - 7:45 pm
STL
-
MEX
27h 46m
1 stop
Multiple Airlines Logo
8:40 am - 7:23 pm
MEX
-
STL
9h 43m
1 stop
$417Multiple Airlines
Fri, Apr 24 - Sat, May 16
Multiple Airlines Logo
8:08 pm - 5:30 pm
STL
-
MEX
22h 22m
1 stop
Multiple Airlines Logo
11:05 pm - 6:04 pm
MEX
-
STL
17h 59m
2 stops
$431Multiple Airlines
Fri, May 8 - Fri, May 15
Multiple Airlines Logo
8:17 pm - 5:30 pm
STL
-
MEX
22h 13m
1 stop
Multiple Airlines Logo
8:40 am - 7:21 pm
MEX
-
STL
9h 41m
1 stop
$434Multiple Airlines
Mon, Apr 20 - Fri, Apr 24
Multiple Airlines Logo
8:08 pm - 5:30 pm
STL
-
MEX
22h 22m
1 stop
Multiple Airlines Logo
11:05 pm - 6:04 pm
MEX
-
STL
17h 59m
2 stops
$435Multiple Airlines
Fri, May 8 - Fri, May 15

Frontier flights from St. Louis to Mexico City

Our best Frontier deals on St. Louis to Mexico City flight tickets
Frontier
Apr 20
STL3:21 pmLambert-St Louis
8h 24m
1 stop
MEX10:45 pmMexico City Benito Juarez
Apr 22
MEX8:45 pmMexico City Benito Juarez
17h 34m
1 stop
STL3:19 pmLambert-St Louis
$397
Frontier
May 7
STL3:33 pmLambert-St Louis
8h 12m
1 stop
MEX10:45 pmMexico City Benito Juarez
May 26
MEX8:40 amMexico City Benito Juarez
9h 43m
1 stop
STL7:23 pmLambert-St Louis
$410
Frontier
Apr 17
STL4:59 pmLambert-St Louis
27h 46m
1 stop
MEX7:45 pmMexico City Benito Juarez
Apr 25
MEX8:40 amMexico City Benito Juarez
9h 52m
1 stop
STL7:32 pmLambert-St Louis
$440

Volaris flights from St. Louis to Mexico City

Our best Volaris deals on St. Louis to Mexico City flight tickets
Volaris
Apr 9
STL6:15 amLambert-St Louis
11h 25m
1 stop
MEX4:40 pmMexico City Benito Juarez
Apr 13
MEX8:45 pmMexico City Benito Juarez
17h 34m
1 stop
STL3:19 pmLambert-St Louis
$595
Volaris
Apr 9
STL6:15 amLambert-St Louis
11h 25m
1 stop
MEX4:40 pmMexico City Benito Juarez
Apr 13
MEX8:45 pmMexico City Benito Juarez
17h 34m
1 stop
STL3:19 pmLambert-St Louis
$620
Volaris
Apr 9
STL6:15 amLambert-St Louis
11h 25m
1 stop
MEX4:40 pmMexico City Benito Juarez
Apr 13
MEX8:45 pmMexico City Benito Juarez
17h 34m
1 stop
STL3:19 pmLambert-St Louis
$630

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 March 27, 2026.
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

Cheapest round-trip

St. LouisMexico City

STL - MEX

STLMEX

Lambert-St Louis

Fri 4/24

9:58 pm-5:30 pm

2 stops20h 32m

Mexico City Benito Juarez

Sat 5/16

8:40 am-7:23 pm

1 stop9h 43m

$385

St. LouisMexico City

STL - MEX

STLMEX

Lambert-St Louis

Mon 4/20

3:21 pm-10:45 pm

1 stop8h 24m

Mexico City Benito Juarez

Fri 4/24

7:00 am-7:32 pm

2 stops35h 32m

$392

St. LouisMexico City

STL - MEX

STLMEX

Lambert-St Louis

Mon 4/20

3:21 pm-10:45 pm

1 stop8h 24m

Mexico City Benito Juarez

Wed 4/22

8:45 pm-3:19 pm

1 stop17h 34m

$397

St. LouisMexico City

STL - MEX

STLMEX

Lambert-St Louis

Fri 5/8

8:08 pm-5:30 pm

1 stop22h 22m

Mexico City Benito Juarez

Fri 5/15

9:55 pm-6:04 pm

2 stops19h 09m

$408

St. LouisMexico City

STL - MEX

STLMEX

Lambert-St Louis

Mon 4/20

3:21 pm-10:45 pm

1 stop8h 24m

Mexico City Benito Juarez

Wed 4/22

7:00 am-9:00 pm

2 stops37h 00m

$409
Quickest round-trip

St. LouisMexico City

STL - MEX

STLMEX

Lambert-St Louis

Thu 5/7

3:33 pm-10:45 pm

1 stop8h 12m

Mexico City Benito Juarez

Tue 5/26

8:40 am-7:23 pm

1 stop9h 43m

$410

St. LouisMexico City

STL - MEX

STLMEX

Lambert-St Louis

Fri 4/24

4:59 pm-7:45 pm

1 stop27h 46m

Mexico City Benito Juarez

Sat 5/16

8:40 am-7:23 pm

1 stop9h 43m

$417

St. LouisMexico City

STL - MEX

STLMEX

Lambert-St Louis

Fri 5/8

8:08 pm-5:30 pm

1 stop22h 22m

Mexico City Benito Juarez

Fri 5/15

11:05 pm-6:04 pm

2 stops17h 59m

$431

St. LouisMexico City

STL - MEX

STLMEX

Lambert-St Louis

Mon 4/20

8:17 pm-5:30 pm

1 stop22h 13m

Mexico City Benito Juarez

Fri 4/24

8:40 am-7:21 pm

1 stop9h 41m

$434

St. LouisMexico City

STL - MEX

STLMEX

Lambert-St Louis

Fri 5/8

8:08 pm-5:30 pm

1 stop22h 22m

Mexico City Benito Juarez

Fri 5/15

11:05 pm-6:04 pm

2 stops17h 59m

$435

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 18 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 typical price of a round-trip flight between St. Louis and Mexico City?

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 $562, 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.

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 $664 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 $534 on momondo.

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

As of March 2026, prices for St. Louis to Mexico City flights are approximately 2% 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

Fastest flight time

8h 12m

Direct flights

None
The fastest flight from St. Louis to Mexico City takes 8h 12m
There are no direct flights from St. Louis to Mexico City. There are no popular flight routes from St. Louis to Mexico City.
Search flight deals

  • 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 12m.

  • 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
DeltaPriceFrom $469Free CancellationRating
7.9
8,350 reviews
Search Delta flights
FrontierPriceFrom $476Free CancellationRating
5.7
3,013 reviews
Search Frontier flights
AeromexicoPriceFrom $487Free CancellationRating
7.4
1,557 reviews
Search Aeromexico flights
United AirlinesPriceFrom $487Free CancellationRating
7.4
9,500 reviews
Search United Airlines flights
American AirlinesPriceFrom $538Free CancellationRating
7.1
11,517 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
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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Find better results for your trip to Mexico

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Mexico City Toluca Intl Airport