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Cheap flights from St. Louis to Mexico City from $156

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 10/30. 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

Discover deals from 900+ travel sites with momondo.

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
6:10 am - 7:55 pmSTL  Lambert-St Louis-MEX Mexico City Benito Juarez
14h 45m1 stop Cancun
Frontier Logo
11:05 am - 3:52 pmMEX  Mexico City Benito Juarez-STL Lambert-St Louis
28h 47m1 stop Cancun
$355Frontier
Sat, Oct 31 - Wed, Nov 4
Multiple Airlines Logo
6:49 pm - 10:45 pmSTL  Lambert-St Louis-MEX Mexico City Benito Juarez
28h 56m1 stop Dallas/Fort Worth
Multiple Airlines Logo
9:45 am - 9:40 amMEX  Mexico City Benito Juarez-STL Lambert-St Louis
47h 55m2 stops Miami Atlanta Hartsfield-Jackson
$361Multiple Airlines
Fri, Oct 30 - Mon, Nov 9
Multiple Airlines Logo
10:20 am - 10:45 pmSTL  Lambert-St Louis-MEX Mexico City Benito Juarez
13h 25m1 stop Dallas/Fort Worth
Multiple Airlines Logo
7:00 am - 9:35 amMEX  Mexico City Benito Juarez-STL Lambert-St Louis
25h 35m1 stop Dallas/Fort Worth
$371Multiple Airlines
Thu, Sep 24 - Wed, Sep 30
United Airlines Logo
4:17 pm - 10:30 pmSTL  Lambert-St Louis-MEX Mexico City Benito Juarez
6h 13m1 stop Houston George Bush Intcntl
United Airlines Logo
3:30 pm - 10:06 pmMEX  Mexico City Benito Juarez-STL Lambert-St Louis
6h 36m1 stop Houston George Bush Intcntl
$569United Airlines
Tue, Jan 12 - Tue, Jan 19
American Airlines Logo
2:54 pm - 11:19 pmSTL  Lambert-St Louis-MEX Mexico City Benito Juarez
8h 25m1 stop Dallas/Fort Worth
American Airlines Logo
12:22 pm - 10:05 pmMEX  Mexico City Benito Juarez-STL Lambert-St Louis
9h 43m1 stop Dallas/Fort Worth
$569American Airlines
Fri, Feb 5 - Fri, Feb 12
American Airlines Logo
2:54 pm - 11:19 pmSTL  Lambert-St Louis-MEX Mexico City Benito Juarez
8h 25m1 stop Dallas/Fort Worth
American Airlines Logo
12:22 pm - 10:05 pmMEX  Mexico City Benito Juarez-STL Lambert-St Louis
9h 43m1 stop Dallas/Fort Worth
$569American Airlines
Fri, Feb 5 - Fri, Feb 12
Delta Logo
5:38 pm - 9:45 amSTL  Lambert-St Louis-MEX Mexico City Benito Juarez
16h 07m2 stops Atlanta Hartsfield-Jackson Miami
Delta Logo
6:40 am - 11:56 pmMEX  Mexico City Benito Juarez-STL Lambert-St Louis
17h 16m2 stops New York John F Kennedy Intl Atlanta Hartsfield-Jackson
$574Delta
Sun, Nov 1 - Mon, Nov 9
Delta Logo
12:28 pm - 10:20 pmSTL  Lambert-St Louis-MEX Mexico City Benito Juarez
10h 52m2 stops Minneapolis St Paul Houston George Bush Intcntl
Delta Logo
8:40 am - 4:28 pmMEX  Mexico City Benito Juarez-STL Lambert-St Louis
6h 48m1 stop Atlanta Hartsfield-Jackson
$574Delta
Wed, Oct 14 - Wed, Oct 21
United Airlines Logo
1:36 pm - 9:10 pmSTL  Lambert-St Louis-MEX Mexico City Benito Juarez
8h 34m1 stop Denver Intl
United Airlines Logo
8:05 am - 4:34 pmMEX  Mexico City Benito Juarez-STL Lambert-St Louis
7h 29m1 stop Denver Intl
$655United Airlines
Sat, Sep 12 - Mon, Sep 21
United Airlines Logo
11:10 am - 3:40 pmSTL  Lambert-St Louis-MEX Mexico City Benito Juarez
5h 30m1 stop Houston George Bush Intcntl
United Airlines Logo
4:40 pm - 12:13 pmMEX  Mexico City Benito Juarez-STL Lambert-St Louis
18h 33m2 stops Houston George Bush Intcntl Chicago O'Hare Intl
$722United Airlines
Mon, Sep 28 - Mon, Oct 5

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Frontier flights from St. Louis to Mexico City

Our best Frontier deals on St. Louis to Mexico City flight tickets
Frontier
Oct 31
STL6:10 amLambert-St Louis
14h 45m
1 stop
MEX7:55 pmMexico City Benito Juarez
Nov 4
MEX11:05 amMexico City Benito Juarez
28h 47m
1 stop
STL3:52 pmLambert-St Louis
$355
Frontier
Oct 14
STL8:10 pmLambert-St Louis
22h 20m
1 stop
MEX5:30 pmMexico City Benito Juarez
Oct 21
MEX11:10 amMexico City Benito Juarez
27h 24m
1 stop
STL3:34 pmLambert-St Louis
$372
Frontier
Oct 31
STL6:10 amLambert-St Louis
14h 45m
1 stop
MEX7:55 pmMexico City Benito Juarez
Nov 7
MEX12:05 pmMexico City Benito Juarez
10h 34m
1 stop
STL10:39 pmLambert-St Louis
$383

Delta flights from St. Louis to Mexico City

Our best Delta deals on St. Louis to Mexico City flight tickets
Delta
Aug 21
STL6:00 amLambert-St Louis
10h 20m
2 stops
MEX3:20 pmMexico City Benito Juarez
Aug 24
MEX3:30 pmMexico City Benito Juarez
7h 28m
1 stop
STL11:58 pmLambert-St Louis
$787
Delta
Aug 21
STL11:00 amLambert-St Louis
12h 10m
2 stops
MEX10:10 pmMexico City Benito Juarez
Aug 24
MEX9:05 amMexico City Benito Juarez
13h 21m
2 stops
STL11:26 pmLambert-St Louis
$792
Delta
Aug 26
STL11:00 amLambert-St Louis
11h 50m
1 stop
MEX9:50 pmMexico City Benito Juarez
Aug 29
MEX8:40 amMexico City Benito Juarez
10h 53m
1 stop
STL8:33 pmLambert-St Louis
$885

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 August 16, 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 Lambert-St Louis - MEX Mexico City Benito Juarez

STLMEX

Lambert-St Louis

Sat 10/31

6:10 am-7:55 pm

1 stop14h 45m

Mexico City Benito Juarez

Wed 11/4

11:05 am-3:52 pm

1 stop28h 47m

$355

St. LouisMexico City

STL Lambert-St Louis - MEX Mexico City Benito Juarez

STLMEX

Lambert-St Louis

Fri 10/30

6:49 pm-10:45 pm

1 stop28h 56m

Mexico City Benito Juarez

Mon 11/9

9:45 am-9:40 am

2 stops47h 55m

$361

St. LouisMexico City

STL Lambert-St Louis - MEX Mexico City Benito Juarez

STLMEX

Lambert-St Louis

Thu 9/24

10:20 am-10:45 pm

1 stop13h 25m

Mexico City Benito Juarez

Wed 9/30

7:00 am-9:35 am

1 stop25h 35m

$371
Quickest round-trip

St. LouisMexico City

STL Lambert-St Louis - MEX Mexico City Benito Juarez

STLMEX

Lambert-St Louis

Tue 1/12

4:17 pm-10:30 pm

1 stop6h 13m

Mexico City Benito Juarez

Tue 1/19

3:30 pm-10:06 pm

1 stop6h 36m

$569

St. LouisMexico City

STL Lambert-St Louis - MEX Mexico City Benito Juarez

STLMEX

Lambert-St Louis

Fri 2/5

2:54 pm-11:19 pm

1 stop8h 25m

Mexico City Benito Juarez

Fri 2/12

12:22 pm-10:05 pm

1 stop9h 43m

$569

St. LouisMexico City

STL Lambert-St Louis - MEX Mexico City Benito Juarez

STLMEX

Lambert-St Louis

Fri 2/5

2:54 pm-11:19 pm

1 stop8h 25m

Mexico City Benito Juarez

Fri 2/12

12:22 pm-10:05 pm

1 stop9h 43m

$569

St. LouisMexico City

STL Lambert-St Louis - MEX Mexico City Benito Juarez

STLMEX

Lambert-St Louis

Sun 11/1

5:38 pm-9:45 am

2 stops16h 07m

Mexico City Benito Juarez

Mon 11/9

6:40 am-11:56 pm

2 stops17h 16m

$574

St. LouisMexico City

STL Lambert-St Louis - MEX Mexico City Benito Juarez

STLMEX

Lambert-St Louis

Wed 10/14

12:28 pm-10:20 pm

2 stops10h 52m

Mexico City Benito Juarez

Wed 10/21

8:40 am-4:28 pm

1 stop6h 48m

$574

St. LouisMexico City

STL Lambert-St Louis - MEX Mexico City Benito Juarez

STLMEX

Lambert-St Louis

Sat 9/12

1:36 pm-9:10 pm

1 stop8h 34m

Mexico City Benito Juarez

Mon 9/21

8:05 am-4:34 pm

1 stop7h 29m

$655

St. LouisMexico City

STL Lambert-St Louis - MEX Mexico City Benito Juarez

STLMEX

Lambert-St Louis

Mon 9/28

11:10 am-3:40 pm

1 stop5h 30m

Mexico City Benito Juarez

Mon 10/5

4:40 pm-12:13 pm

2 stops18h 33m

$722

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?

Prices are currently low for flights on this route.

Typical prices usually range from $667 to $755.
The lowest price recently found on this route was $355.

What is the cheapest month to fly to Mexico City?

The cheapest month to fly to Mexico City from St. Louis is in April. Flight prices, which tend to average around $572, are often lower during this time because this is during the off-season. If you aren’t able to travel during the month of April, 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 April, still average around $605.

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 $678 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 $557 on momondo.

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

As of August 2026, prices for St. Louis to Mexico City flights are approximately 27% 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

6h 15m

Direct flights

None
The fastest flight from St. Louis to Mexico City takes 6h 15m
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 6h 15m.

  • 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
7.8
8,502 reviews
Search Delta flights
United AirlinesPriceFrom $550Free CancellationRating
7.4
10,104 reviews
Search United Airlines flights
American AirlinesPriceFrom $574Free CancellationRating
7.1
11,950 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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