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Cheap flights from St. Louis to Mexico City from $184

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 3/16. 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.
Multiple Airlines Logo
1:54 pm - 5:05 pm
STL
-
MEX
27h 11m
1 stop
Multiple Airlines Logo
10:50 pm - 9:49 am
MEX
-
STL
33h 59m
2 stops
$333Multiple Airlines
Mon, Mar 2 - Mon, Mar 9
Multiple Airlines Logo
3:49 pm - 7:45 pm
STL
-
MEX
27h 56m
1 stop
Multiple Airlines Logo
11:10 am - 11:59 pm
MEX
-
STL
12h 49m
1 stop
$356Multiple Airlines
Mon, Feb 16 - Sat, Feb 28
Multiple Airlines Logo
3:49 pm - 7:45 pm
STL
-
MEX
27h 56m
1 stop
Multiple Airlines Logo
8:10 am - 9:49 am
MEX
-
STL
24h 39m
1 stop
$370Multiple Airlines
Mon, Feb 16 - Sun, Mar 8
Multiple Airlines Logo
3:49 pm - 7:45 pm
STL
-
MEX
27h 56m
1 stop
Multiple Airlines Logo
11:10 am - 11:59 pm
MEX
-
STL
12h 49m
1 stop
$373Multiple Airlines
Tue, Feb 17 - Sat, Feb 28
Multiple Airlines Logo
8:17 pm - 10:30 pm
STL
-
MEX
26h 13m
2 stops
Multiple Airlines Logo
11:10 am - 11:59 pm
MEX
-
STL
12h 49m
1 stop
$376Multiple Airlines
Sat, Feb 14 - Sat, Feb 28
Multiple Airlines Logo
10:11 pm - 5:05 pm
STL
-
MEX
18h 54m
2 stops
Multiple Airlines Logo
7:20 pm - 2:09 pm
MEX
-
STL
18h 49m
1 stop
$379Multiple Airlines
Thu, Feb 26 - Wed, Mar 4
Multiple Airlines Logo
3:49 pm - 7:45 pm
STL
-
MEX
27h 56m
1 stop
Multiple Airlines Logo
7:00 am - 6:51 am
MEX
-
STL
23h 51m
2 stops
$381Multiple Airlines
Mon, Feb 16 - Sun, Mar 1
Multiple Airlines Logo
8:22 pm - 6:45 pm
STL
-
MEX
22h 23m
2 stops
Multiple Airlines Logo
11:10 am - 11:59 pm
MEX
-
STL
12h 49m
1 stop
$385Multiple Airlines
Mon, Feb 16 - Sat, Feb 28
Multiple Airlines Logo
3:49 pm - 7:45 pm
STL
-
MEX
27h 56m
1 stop
Multiple Airlines Logo
8:10 am - 9:49 am
MEX
-
STL
24h 39m
1 stop
$386Multiple Airlines
Tue, Feb 17 - Sun, Mar 8
Multiple Airlines Logo
8:20 pm - 10:00 pm
STL
-
MEX
25h 40m
2 stops
Multiple Airlines Logo
8:10 am - 9:49 am
MEX
-
STL
24h 39m
1 stop
$388Multiple Airlines
Fri, Feb 20 - Sun, Mar 8

Frontier flights from St. Louis to Mexico City

Our best Frontier deals on St. Louis to Mexico City flight tickets
Frontier
Feb 16
STL3:49 pmLambert-St Louis
27h 56m
1 stop
MEX7:45 pmMexico City Benito Juarez
Feb 20
MEX3:45 pmMexico City Benito Juarez
22h 11m
2 stops
STL1:56 pmLambert-St Louis
$477
Frontier
Mar 18
STL11:32 amLambert-St Louis
11h 28m
2 stops
MEX10:00 pmMexico City Benito Juarez
Mar 24
MEX11:10 amMexico City Benito Juarez
11h 09m
1 stop
STL11:19 pmLambert-St Louis
$479
Frontier
Feb 18
STL3:49 pmLambert-St Louis
27h 56m
1 stop
MEX7:45 pmMexico City Benito Juarez
Feb 24
MEX8:10 amMexico City Benito Juarez
31h 43m
2 stops
STL3:53 pmLambert-St Louis
$487

Delta flights from St. Louis to Mexico City

Our best Delta deals on St. Louis to Mexico City flight tickets
Delta
Feb 12
STL6:00 amLambert-St Louis
12h 45m
2 stops
MEX6:45 pmMexico City Benito Juarez
Mar 25
MEX9:55 amMexico City Benito Juarez
12h 30m
2 stops
STL11:25 pmLambert-St Louis
$733
Delta
Feb 15
STL11:55 amLambert-St Louis
23h 55m
2 stops
MEX11:50 amMexico City Benito Juarez
Feb 28
MEX2:50 pmMexico City Benito Juarez
8h 33m
1 stop
STL11:23 pmLambert-St Louis
$747
Delta
Feb 11
STL7:10 amLambert-St Louis
13h 00m
2 stops
MEX8:10 pmMexico City Benito Juarez
Mar 1
MEX7:10 amMexico City Benito Juarez
13h 33m
2 stops
STL8:43 pmLambert-St Louis
$751

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 February 2, 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

St. LouisMexico City

STL - MEX

STLMEX

Lambert-St Louis

Mon 3/2

1:54 pm-5:05 pm

1 stop27h 11m

Mexico City Benito Juarez

Mon 3/9

10:50 pm-9:49 am

2 stops33h 59m

$333

St. LouisMexico City

STL - MEX

STLMEX

Lambert-St Louis

Mon 2/16

3:49 pm-7:45 pm

1 stop27h 56m

Mexico City Benito Juarez

Sat 2/28

11:10 am-11:59 pm

1 stop12h 49m

$356

St. LouisMexico City

STL - MEX

STLMEX

Lambert-St Louis

Mon 2/16

3:49 pm-7:45 pm

1 stop27h 56m

Mexico City Benito Juarez

Sun 3/8

8:10 am-9:49 am

1 stop24h 39m

$370

St. LouisMexico City

STL - MEX

STLMEX

Lambert-St Louis

Tue 2/17

3:49 pm-7:45 pm

1 stop27h 56m

Mexico City Benito Juarez

Sat 2/28

11:10 am-11:59 pm

1 stop12h 49m

$373

St. LouisMexico City

STL - MEX

STLMEX

Lambert-St Louis

Sat 2/14

8:17 pm-10:30 pm

2 stops26h 13m

Mexico City Benito Juarez

Sat 2/28

11:10 am-11:59 pm

1 stop12h 49m

$376

St. LouisMexico City

STL - MEX

STLMEX

Lambert-St Louis

Thu 2/26

10:11 pm-5:05 pm

2 stops18h 54m

Mexico City Benito Juarez

Wed 3/4

7:20 pm-2:09 pm

1 stop18h 49m

$379

St. LouisMexico City

STL - MEX

STLMEX

Lambert-St Louis

Mon 2/16

3:49 pm-7:45 pm

1 stop27h 56m

Mexico City Benito Juarez

Sun 3/1

7:00 am-6:51 am

2 stops23h 51m

$381

St. LouisMexico City

STL - MEX

STLMEX

Lambert-St Louis

Mon 2/16

8:22 pm-6:45 pm

2 stops22h 23m

Mexico City Benito Juarez

Sat 2/28

11:10 am-11:59 pm

1 stop12h 49m

$385

St. LouisMexico City

STL - MEX

STLMEX

Lambert-St Louis

Tue 2/17

3:49 pm-7:45 pm

1 stop27h 56m

Mexico City Benito Juarez

Sun 3/8

8:10 am-9:49 am

1 stop24h 39m

$386

St. LouisMexico City

STL - MEX

STLMEX

Lambert-St Louis

Fri 2/20

8:20 pm-10:00 pm

2 stops25h 40m

Mexico City Benito Juarez

Sun 3/8

8:10 am-9:49 am

1 stop24h 39m

$388

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 13 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 $561.

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 $662 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 February 2026, prices for St. Louis to Mexico City flights are approximately 36% 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

7h 50m

Direct flights

None
The fastest flight from St. Louis to Mexico City takes 7h 50m
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 7h 50m.

  • 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
AeromexicoPriceFrom $487Free CancellationRating
7.4
1,583 reviews
Search Aeromexico flights
DeltaPriceFrom $487Free CancellationRating
7.9
8,129 reviews
Search Delta flights
American AirlinesPriceFrom $537Free CancellationRating
7.2
11,211 reviews
Search American Airlines flights
United AirlinesPriceFrom $537Free CancellationRating
7.4
9,229 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