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Cheap flights from Mexico to St. Louis from $132

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Mexico to St. Louis departing on 7/9. 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 Mexico to St. Louis

Recent round-trip flight deals from Mexico to St. Louis

Enter your travel dates to find the best prices.
Frontier Logo
7:00 am - 6:34 pm
MEX
-
STL
10h 34m
1 stop
Frontier Logo
6:30 am - 4:40 pm
STL
-
MEX
11h 10m
1 stop
$311Frontier
Sat, Jul 4 - Tue, Jul 14
Frontier Logo
7:00 am - 6:34 pm
MEX
-
STL
10h 34m
1 stop
Frontier Logo
6:30 am - 4:40 pm
STL
-
MEX
11h 10m
1 stop
$312Frontier
Sat, Jul 4 - Tue, Jul 14
Aeromexico Logo
1:45 pm - 9:38 pm
CUN
-
STL
7h 53m
1 stop
Aeromexico Logo
6:00 am - 8:16 pm
STL
-
CUN
14h 16m
1 stop
$365Aeromexico
Thu, May 28 - Mon, Jun 1
Delta Logo
8:00 am - 10:18 pm
CUN
-
STL
14h 18m
1 stop
Delta Logo
6:30 am - 1:05 pm
STL
-
CUN
6h 35m
1 stop
$370Delta
Tue, Jun 16 - Sat, Jun 20
Aeromexico Logo
12:45 pm - 11:59 pm
CUN
-
STL
11h 14m
1 stop
Aeromexico Logo
7:05 am - 8:16 pm
STL
-
CUN
13h 11m
1 stop
$371Aeromexico
Thu, May 28 - Mon, Jun 1
Delta Logo
12:36 pm - 11:23 pm
CUN
-
STL
10h 47m
2 stops
Delta Logo
7:08 am - 8:25 pm
STL
-
CUN
13h 17m
1 stop
$381Delta
Wed, Jun 10 - Sun, Jun 14
Multiple Airlines Logo
4:10 pm - 5:30 pm
MEX
-
STL
24h 20m
2 stops
Multiple Airlines Logo
8:08 pm - 5:30 pm
STL
-
MEX
22h 22m
1 stop
$428Multiple Airlines
Mon, Jun 15 - Tue, Jun 23
Multiple Airlines Logo
8:40 am - 7:23 pm
MEX
-
STL
9h 43m
1 stop
Multiple Airlines Logo
6:33 pm - 12:20 pm
STL
-
MEX
18h 47m
2 stops
$430Multiple Airlines
Wed, Jun 3 - Sun, Jun 7
United Airlines Logo
12:19 pm - 4:51 pm
PVR
-
STL
27h 32m
2 stops
United Airlines Logo
5:10 am - 12:53 pm
STL
-
PVR
8h 43m
1 stop
$489United Airlines
Thu, Oct 1 - Mon, Oct 5
United Airlines Logo
12:19 pm - 10:30 pm
PVR
-
STL
9h 11m
1 stop
United Airlines Logo
3:07 pm - 11:10 am
STL
-
PVR
21h 03m
1 stop
$496United Airlines
Thu, Oct 1 - Mon, Oct 5

Frontier flights from Mexico to St. Louis

Our best Frontier deals on Mexico to St. Louis flight tickets
Frontier
Jul 4
MEX7:00 amMexico City Benito Juarez
10h 34m
1 stop
STL6:34 pmLambert-St Louis
Jul 14
STL6:30 amLambert-St Louis
11h 10m
1 stop
MEX4:40 pmMexico City Benito Juarez
$311
Frontier
Jul 4
MEX7:00 amMexico City Benito Juarez
10h 34m
1 stop
STL6:34 pmLambert-St Louis
Jul 14
STL6:30 amLambert-St Louis
11h 10m
1 stop
MEX4:40 pmMexico City Benito Juarez
$312
Frontier
Jun 24
MEX8:45 pmMexico City Benito Juarez
16h 52m
1 stop
STL2:37 pmLambert-St Louis
Jun 27
STL6:30 amLambert-St Louis
17h 40m
1 stop
MEX11:10 pmMexico City Benito Juarez
$365

Air Canada flights from Mexico to St. Louis

Our best Air Canada deals on Mexico to St. Louis flight tickets
Air Canada
Jun 9
CUN1:45 pmCancun
22h 21m
2 stops
STL12:06 pmLambert-St Louis
Jun 15
STL1:05 pmLambert-St Louis
23h 05m
1 stop
CUN12:10 pmCancun
$425
Air Canada
Jun 9
CUN1:45 pmCancun
22h 21m
2 stops
STL12:06 pmLambert-St Louis
Jun 15
STL2:15 pmLambert-St Louis
21h 55m
2 stops
CUN12:10 pmCancun
$434
Air Canada
Jun 10
CUN2:00 pmCancun
22h 06m
2 stops
STL12:06 pmLambert-St Louis
Jun 14
STL2:15 pmLambert-St Louis
21h 55m
2 stops
CUN12:10 pmCancun
$436

momondo Fare Finder

 
Customize your flight search to find flights from Mexico to St. Louis 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 15, 2026.
Use the filters below to find and compare flights from Mexico to St. Louis that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

Mexico CitySt. Louis

MEX - STL

MEXSTL

Mexico City Benito Juarez

Sat 7/4

7:00 am-6:34 pm

1 stop10h 34m

Lambert-St Louis

Tue 7/14

6:30 am-4:40 pm

1 stop11h 10m

$311

Mexico CitySt. Louis

MEX - STL

MEXSTL

Mexico City Benito Juarez

Sat 7/4

7:00 am-6:34 pm

1 stop10h 34m

Lambert-St Louis

Tue 7/14

6:30 am-4:40 pm

1 stop11h 10m

$312

CancúnSt. Louis

CUN - STL

CUNSTL

Cancun

Thu 5/28

1:45 pm-9:38 pm

1 stop7h 53m

Lambert-St Louis

Mon 6/1

6:00 am-8:16 pm

1 stop14h 16m

$365
Quickest round-trip

CancúnSt. Louis

CUN - STL

CUNSTL

Cancun

Tue 6/16

8:00 am-10:18 pm

1 stop14h 18m

Lambert-St Louis

Sat 6/20

6:30 am-1:05 pm

1 stop6h 35m

$370

CancúnSt. Louis

CUN - STL

CUNSTL

Cancun

Thu 5/28

12:45 pm-11:59 pm

1 stop11h 14m

Lambert-St Louis

Mon 6/1

7:05 am-8:16 pm

1 stop13h 11m

$371

CancúnSt. Louis

CUN - STL

CUNSTL

Cancun

Wed 6/10

12:36 pm-11:23 pm

2 stops10h 47m

Lambert-St Louis

Sun 6/14

7:08 am-8:25 pm

1 stop13h 17m

$381

Mexico CitySt. Louis

MEX - STL

MEXSTL

Mexico City Benito Juarez

Mon 6/15

4:10 pm-5:30 pm

2 stops24h 20m

Lambert-St Louis

Tue 6/23

8:08 pm-5:30 pm

1 stop22h 22m

$428

Mexico CitySt. Louis

MEX - STL

MEXSTL

Mexico City Benito Juarez

Wed 6/3

8:40 am-7:23 pm

1 stop9h 43m

Lambert-St Louis

Sun 6/7

6:33 pm-12:20 pm

2 stops18h 47m

$430

Puerto VallartaSt. Louis

PVR - STL

PVRSTL

Puerto Vallarta Ordaz

Thu 10/1

12:19 pm-4:51 pm

2 stops27h 32m

Lambert-St Louis

Mon 10/5

5:10 am-12:53 pm

1 stop8h 43m

$489

Puerto VallartaSt. Louis

PVR - STL

PVRSTL

Puerto Vallarta Ordaz

Thu 10/1

12:19 pm-10:30 pm

1 stop9h 11m

Lambert-St Louis

Mon 10/5

3:07 pm-11:10 am

1 stop21h 03m

$496

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 St. Louis from

How to get the cheapest flight ticket from Mexico to St. Louis

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 St. Louis?

In general, September is the cheapest month to fly from Mexico to St. Louis. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $200. The month of May is another great option to travel to St. Louis, with average flight prices from Mexico averaging around $222.

What is the cheapest day to depart on your flight to St. Louis?

The cheapest day to depart on your flight to St. Louis is on a Friday when prices can be found for as low as $206. This is often the case because there is less demand to fly during this day of the week. If your travel schedule is flexible, try to avoid departing on a Monday because tickets tend to average around $514. These prices are subject to change though, so be sure to set up a Price Alert for flights to St. Louis.

What is the cheapest time of day to depart on your flight to St. Louis?

Flying to St. Louis from Mexico in the morning is the least expensive time of day to depart. momondo users have found prices as low as $206 when looking at flights departing in the morning. In the afternoon is when there is more demand to fly to St. Louis, so prices are often more expensive at around $372 per ticket.

What is the cheapest Mexico to Lambert-St Louis flight route?

Fly from Cancun to Lambert-St Louis for the best Mexico - Lambert-St Louis flight prices

Can stopping save me money on Mexico to St. Louis flights?

You could potentially save up to 13% on your flight if you consider stops on a Mexico to St. Louis flight.

Cheap Mexico to St. Louis flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Mexico to St. Louis

Fastest flight time

3h 26m

Direct flights

Every day

Airports in St. Louis

1 airport
The fastest flight from Mexico to St. Louis takes 3h 26m
Direct flights go from Mexico to St. Louis every day.
There is 1 airport in St. Louis. From Mexico there are direct flights to Lambert-St Louis (STL).
Search flight deals

Frequently asked questions about flying from Mexico to St. Louis

  • When did momondo last update prices for flights from Mexico to Lambert-St Louis Airport?

    Prices for flights from Mexico to Lambert-St Louis Airport refresh daily.

  • How many operators does momondo search for flights from Mexico to Lambert-St Louis Airport?

  • How old do you have to be to fly from Mexico to Lambert-St Louis 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 Mexico to Lambert-St Louis Airport.

  • What documentation or ID do you need to fly to Lambert-St Louis Airport?

    The required travel and health documents for your Lambert-St Louis Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Lambert-St Louis Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

  • What is the most popular plane model from Mexico to St. Louis?

Best airlines flying from Mexico to St. Louis

Compare and see reviews for airlines that fly from Mexico to St. Louis with momondo
Airline
Rating
Free Cancellation
Price
United AirlinesPriceFrom $466Free CancellationRating
7.4
9,717 reviews
Search United Airlines flights

Traveling to a place near St. Louis?

Book flights to St. Louis if you plan to visit one of these locations
St. Charles
Chesterfield
Hermann
Fairview Heights
Maryland Heights
O'Fallon
Florissant
St. Peters
Collinsville
Alton
Wentzville
Fenton
Farmington
Festus
Clayton
Eureka
Litchfield
Edwardsville
Shrewsbury
Grafton

Why use momondo?

Why should I use momondo to find a flight deal from Mexico to St. Louis?

Finding the right flight to St. Louis from Mexico 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 St. Louis quick and easy, saving you time and money.

Can I find flights from Mexico to St. Louis with flexible booking policies on momondo?

Yes. momondo allows you to filter the results for Mexico to St. Louis flights to just show those with flexible booking policies.

How can momondo help me find flights from Mexico to St. Louis?

Once you have performed a search for Mexico to St. Louis flights, momondo helps you find the right one by offering useful filters to narrow down your flight selection. Flights can be filtered by multiple factors such as airline, airport and price; but also by other criteria like aircraft type and payment method.

I’m not ready to book a flight from Mexico to St. Louis right now. Can momondo alert me if prices change?

Yes momondo offers price alerts on flights to St. Louis from Mexico. 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.

An easier way to manage your St. Louis trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.
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