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Cheap flights from St. Louis to Mexico City from $175

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 7/1. 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
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.
Frontier Logo
6:30 am - 11:10 pm
STL
-
MEX
17h 40m
1 stop
Frontier Logo
11:10 am - 2:37 pm
MEX
-
STL
26h 27m
1 stop
$363Frontier
Tue, Jun 9 - Sat, Jun 27
Frontier Logo
8:08 pm - 5:30 pm
STL
-
MEX
22h 22m
1 stop
Frontier Logo
8:45 pm - 2:37 pm
MEX
-
STL
16h 52m
1 stop
$372Frontier
Sat, Jun 6 - Sat, Jun 13
Frontier Logo
8:08 pm - 5:30 pm
STL
-
MEX
22h 22m
1 stop
Frontier Logo
11:10 am - 2:37 pm
MEX
-
STL
26h 27m
1 stop
$380Frontier
Sat, Jun 6 - Sat, Jun 13
Frontier Logo
7:46 pm - 9:45 pm
STL
-
MEX
26h 59m
1 stop
Frontier Logo
8:40 am - 7:23 pm
MEX
-
STL
9h 43m
1 stop
$385Frontier
Tue, Jun 30 - Tue, Jul 7
Multiple Airlines Logo
6:33 pm - 12:20 pm
STL
-
MEX
18h 47m
2 stops
Multiple Airlines Logo
8:40 am - 7:23 pm
MEX
-
STL
9h 43m
1 stop
$426Multiple Airlines
Tue, Jun 2 - Wed, Jun 17
Multiple Airlines Logo
6:33 pm - 12:20 pm
STL
-
MEX
18h 47m
2 stops
Multiple Airlines Logo
8:40 am - 7:23 pm
MEX
-
STL
9h 43m
1 stop
$430Multiple Airlines
Tue, Jun 2 - Tue, Jun 9
Multiple Airlines Logo
8:08 pm - 5:30 pm
STL
-
MEX
22h 22m
1 stop
Multiple Airlines Logo
8:40 am - 7:23 pm
MEX
-
STL
9h 43m
1 stop
$438Multiple Airlines
Tue, Jun 2 - Wed, Jun 17
Multiple Airlines Logo
8:08 pm - 5:30 pm
STL
-
MEX
22h 22m
1 stop
Multiple Airlines Logo
8:40 am - 7:23 pm
MEX
-
STL
9h 43m
1 stop
$442Multiple Airlines
Tue, Jun 2 - Tue, Jun 9
Multiple Airlines Logo
6:33 pm - 10:15 pm
STL
-
MEX
28h 42m
2 stops
Multiple Airlines Logo
7:00 am - 6:34 pm
MEX
-
STL
10h 34m
1 stop
$449Multiple Airlines
Tue, Jun 2 - Tue, Jun 9
Multiple Airlines Logo
7:03 pm - 10:45 pm
STL
-
MEX
28h 42m
1 stop
Multiple Airlines Logo
6:20 am - 8:57 am
MEX
-
STL
25h 37m
2 stops
$460Multiple Airlines
Tue, Jun 30 - Tue, Jul 7

Volaris flights from St. Louis to Mexico City

Our best Volaris deals on St. Louis to Mexico City flight tickets
Volaris
Jun 30
STL6:30 amLambert-St Louis
11h 10m
1 stop
MEX4:40 pmMexico City Benito Juarez
Jul 6
MEX8:45 pmMexico City Benito Juarez
16h 38m
1 stop
STL2:23 pmLambert-St Louis
$473
Volaris
Jun 30
STL6:30 amLambert-St Louis
11h 10m
1 stop
MEX4:40 pmMexico City Benito Juarez
Jul 5
MEX8:45 pmMexico City Benito Juarez
16h 38m
1 stop
STL2:23 pmLambert-St Louis
$504
Volaris
Aug 8
STL3:34 pmLambert-St Louis
8h 11m
1 stop
MEX10:45 pmMexico City Benito Juarez
Aug 11
MEX8:45 pmMexico City Benito Juarez
16h 38m
1 stop
STL2:23 pmLambert-St Louis
$507

Frontier flights from St. Louis to Mexico City

Our best Frontier deals on St. Louis to Mexico City flight tickets
Frontier
Jun 9
STL6:30 amLambert-St Louis
17h 40m
1 stop
MEX11:10 pmMexico City Benito Juarez
Jun 27
MEX11:10 amMexico City Benito Juarez
26h 27m
1 stop
STL2:37 pmLambert-St Louis
$363
Frontier
Jun 6
STL8:08 pmLambert-St Louis
22h 22m
1 stop
MEX5:30 pmMexico City Benito Juarez
Jun 13
MEX8:45 pmMexico City Benito Juarez
16h 52m
1 stop
STL2:37 pmLambert-St Louis
$372
Frontier
Jun 6
STL8:08 pmLambert-St Louis
22h 22m
1 stop
MEX5:30 pmMexico City Benito Juarez
Jun 13
MEX11:10 amMexico City Benito Juarez
26h 27m
1 stop
STL2:37 pmLambert-St Louis
$380

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 May 11, 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

Tue 6/9

6:30 am-11:10 pm

1 stop17h 40m

Mexico City Benito Juarez

Sat 6/27

11:10 am-2:37 pm

1 stop26h 27m

$363

St. LouisMexico City

STL - MEX

STLMEX

Lambert-St Louis

Sat 6/6

8:08 pm-5:30 pm

1 stop22h 22m

Mexico City Benito Juarez

Sat 6/13

8:45 pm-2:37 pm

1 stop16h 52m

$372

St. LouisMexico City

STL - MEX

STLMEX

Lambert-St Louis

Sat 6/6

8:08 pm-5:30 pm

1 stop22h 22m

Mexico City Benito Juarez

Sat 6/13

11:10 am-2:37 pm

1 stop26h 27m

$380

St. LouisMexico City

STL - MEX

STLMEX

Lambert-St Louis

Tue 6/30

7:46 pm-9:45 pm

1 stop26h 59m

Mexico City Benito Juarez

Tue 7/7

8:40 am-7:23 pm

1 stop9h 43m

$385
Quickest round-trip

St. LouisMexico City

STL - MEX

STLMEX

Lambert-St Louis

Tue 6/2

6:33 pm-12:20 pm

2 stops18h 47m

Mexico City Benito Juarez

Wed 6/17

8:40 am-7:23 pm

1 stop9h 43m

$426

St. LouisMexico City

STL - MEX

STLMEX

Lambert-St Louis

Tue 6/2

6:33 pm-12:20 pm

2 stops18h 47m

Mexico City Benito Juarez

Tue 6/9

8:40 am-7:23 pm

1 stop9h 43m

$430

St. LouisMexico City

STL - MEX

STLMEX

Lambert-St Louis

Tue 6/2

8:08 pm-5:30 pm

1 stop22h 22m

Mexico City Benito Juarez

Wed 6/17

8:40 am-7:23 pm

1 stop9h 43m

$438

St. LouisMexico City

STL - MEX

STLMEX

Lambert-St Louis

Tue 6/2

8:08 pm-5:30 pm

1 stop22h 22m

Mexico City Benito Juarez

Tue 6/9

8:40 am-7:23 pm

1 stop9h 43m

$442

St. LouisMexico City

STL - MEX

STLMEX

Lambert-St Louis

Tue 6/2

6:33 pm-10:15 pm

2 stops28h 42m

Mexico City Benito Juarez

Tue 6/9

7:00 am-6:34 pm

1 stop10h 34m

$449

St. LouisMexico City

STL - MEX

STLMEX

Lambert-St Louis

Tue 6/30

7:03 pm-10:45 pm

1 stop28h 42m

Mexico City Benito Juarez

Tue 7/7

6:20 am-8:57 am

2 stops25h 37m

$460

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 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 April instead. Flights to Mexico City in April, while not as cheap as those in September, still average around $572.

How far in advance should I book a flight from St. Louis 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 $660 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 $567 on momondo.

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

As of May 2026, prices for St. Louis to Mexico City flights are approximately 33% 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 11m

Direct flights

None
The fastest flight from St. Louis to Mexico City takes 8h 11m
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

Frequently asked questions about flying 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 11m.

  • 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 $361Free CancellationRating
5.6
2,952 reviews
Search Frontier flights
DeltaPriceFrom $540Free CancellationRating
7.9
8,452 reviews
Search Delta flights
American AirlinesPriceFrom $541Free CancellationRating
7.1
11,665 reviews
Search American Airlines flights
United AirlinesPriceFrom $548Free CancellationRating
7.4
9,700 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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Find better results for your trip to Mexico

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Mexico City Toluca Intl Airport