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Cheap flights from Mexico to St. Louis from $113

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 3/5. 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
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.
United Airlines Logo
3:18 pm - 9:40 pm
CUN
-
STL
7h 22m
1 stop
United Airlines Logo
8:30 am - 4:40 pm
STL
-
CUN
7h 10m
1 stop
$267United Airlines
Thu, Feb 19 - Mon, Feb 23
Frontier Logo
11:42 am - 2:09 pm
CUN
-
STL
3h 27mnonstop
Frontier Logo
6:00 am - 10:30 am
STL
-
CUN
3h 30mnonstop
$269Frontier
Wed, Feb 25 - Wed, Mar 4
Delta Logo
12:05 pm - 11:36 pm
CUN
-
STL
12h 31m
2 stops
Delta Logo
10:13 am - 9:11 pm
STL
-
CUN
9h 58m
1 stop
$300Delta
Wed, Feb 25 - Wed, Mar 4
Delta Logo
12:05 pm - 11:36 pm
CUN
-
STL
12h 31m
2 stops
Delta Logo
6:10 am - 6:47 pm
STL
-
CUN
11h 37m
2 stops
$359Delta
Wed, Feb 25 - Wed, Mar 4
Multiple Airlines Logo
11:10 am - 12:27 am
MEX
-
STL
13h 17m
1 stop
Multiple Airlines Logo
10:11 pm - 9:10 pm
STL
-
MEX
22h 59m
1 stop
$395Multiple Airlines
Fri, Feb 27 - Mon, Mar 2
Air Canada Logo
9:05 pm - 12:21 pm
CUN
-
STL
15h 16m
1 stop
Air Canada Logo
7:25 am - 8:10 pm
STL
-
CUN
12h 45m
1 stop
$409Air Canada
Wed, Jun 24 - Sun, Jun 28
Multiple Airlines Logo
11:10 am - 8:56 am
MEX
-
STL
21h 46m
1 stop
Multiple Airlines Logo
10:11 pm - 9:10 pm
STL
-
MEX
22h 59m
1 stop
$409Multiple Airlines
Fri, Feb 20 - Mon, Feb 23
Aeromexico Logo
3:10 pm - 11:36 pm
CZM
-
STL
8h 26m
1 stop
Aeromexico Logo
7:10 am - 1:55 pm
STL
-
CZM
6h 45m
1 stop
$472Aeromexico
Wed, Feb 25 - Wed, Mar 4
Air Canada Logo
9:05 pm - 12:06 pm
CUN
-
STL
15h 01m
1 stop
Air Canada Logo
7:25 am - 8:10 pm
STL
-
CUN
12h 45m
1 stop
$484Air Canada
Mon, Jun 15 - Thu, Jun 18
Aeromexico Logo
1:41 pm - 11:36 pm
MTY
-
STL
9h 55m
2 stops
Aeromexico Logo
7:03 am - 11:55 pm
STL
-
MTY
17h 52m
2 stops
$629Aeromexico
Thu, Mar 5 - Thu, Mar 12

United Airlines flights from Mexico to St. Louis

Our best United Airlines deals on Mexico to St. Louis flight tickets
United Airlines
Feb 19
CUN3:18 pmCancun
6h 47m
1 stop
STL9:05 pmLambert-St Louis
Feb 23
STL6:55 pmLambert-St Louis
15h 30m
2 stops
CUN11:25 amCancun
$267
United Airlines
Feb 19
CUN3:18 pmCancun
7h 22m
1 stop
STL9:40 pmLambert-St Louis
Feb 23
STL6:55 pmLambert-St Louis
15h 30m
2 stops
CUN11:25 amCancun
$270
United Airlines
Feb 26
CZM2:25 pmCozumel
20h 11m
2 stops
STL10:36 amLambert-St Louis
Feb 28
STL11:25 amLambert-St Louis
25h 58m
2 stops
CZM1:23 pmCozumel
$386

Frontier flights from Mexico to St. Louis

Our best Frontier deals on Mexico to St. Louis flight tickets
Frontier
Feb 25
CUN11:42 amCancun
3h 27m
STL2:09 pmLambert-St Louis
Mar 4
STL6:00 amLambert-St Louis
3h 30m
CUN10:30 amCancun
$269
Frontier
May 16
MEX8:40 amMexico City Benito Juarez
9h 32m
1 stop
STL7:12 pmLambert-St Louis
May 18
STL3:02 pmLambert-St Louis
20h 43m
2 stops
MEX10:45 amMexico City Benito Juarez
$424
Frontier
May 1
MEX7:55 pmMexico City Benito Juarez
22h 17m
2 stops
STL7:12 pmLambert-St Louis
May 5
STL6:00 amLambert-St Louis
11h 40m
1 stop
MEX4:40 pmMexico City Benito Juarez
$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 February 4, 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

CancúnSt. Louis

CUN - STL

CUNSTL

Cancun

Thu 2/19

3:18 pm-9:40 pm

1 stop7h 22m

Lambert-St Louis

Mon 2/23

8:30 am-4:40 pm

1 stop7h 10m

$267

CancúnSt. Louis

CUN - STL

CUNSTL

Cancun

Wed 2/25

11:42 am-2:09 pm

Nonstop3h 27m

Lambert-St Louis

Wed 3/4

6:00 am-10:30 am

Nonstop3h 30m

$269

CancúnSt. Louis

CUN - STL

CUNSTL

Cancun

Wed 2/25

12:05 pm-11:36 pm

2 stops12h 31m

Lambert-St Louis

Wed 3/4

10:13 am-9:11 pm

1 stop9h 58m

$300

CancúnSt. Louis

CUN - STL

CUNSTL

Cancun

Wed 2/25

12:05 pm-11:36 pm

2 stops12h 31m

Lambert-St Louis

Wed 3/4

6:10 am-6:47 pm

2 stops11h 37m

$359

Mexico CitySt. Louis

MEX - STL

MEXSTL

Mexico City Benito Juarez

Fri 2/27

11:10 am-12:27 am

1 stop13h 17m

Lambert-St Louis

Mon 3/2

10:11 pm-9:10 pm

1 stop22h 59m

$395

CancúnSt. Louis

CUN - STL

CUNSTL

Cancun

Wed 6/24

9:05 pm-12:21 pm

1 stop15h 16m

Lambert-St Louis

Sun 6/28

7:25 am-8:10 pm

1 stop12h 45m

$409

Mexico CitySt. Louis

MEX - STL

MEXSTL

Mexico City Benito Juarez

Fri 2/20

11:10 am-8:56 am

1 stop21h 46m

Lambert-St Louis

Mon 2/23

10:11 pm-9:10 pm

1 stop22h 59m

$409

CozumelSt. Louis

CZM - STL

CZMSTL

Cozumel

Wed 2/25

3:10 pm-11:36 pm

1 stop8h 26m

Lambert-St Louis

Wed 3/4

7:10 am-1:55 pm

1 stop6h 45m

$472

CancúnSt. Louis

CUN - STL

CUNSTL

Cancun

Mon 6/15

9:05 pm-12:06 pm

1 stop15h 01m

Lambert-St Louis

Thu 6/18

7:25 am-8:10 pm

1 stop12h 45m

$484

MonterreySt. Louis

MTY - STL

MTYSTL

Monterrey Gen Mariano Escobedo

Thu 3/5

1:41 pm-11:36 pm

2 stops9h 55m

Lambert-St Louis

Thu 3/12

7:03 am-11:55 pm

2 stops17h 52m

$629

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 day to depart on your flight to St. Louis?

The cheapest day to depart on your flight to St. Louis is on a Sunday when prices can be found for as low as $176. 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 $366. 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 $183 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 Puerto Vallarta Ordaz to Lambert-St Louis for the best Mexico - Lambert-St Louis flight prices

What cabin class options are available on Mexico to Lambert-St Louis flights?

There are 2 cabin classes available to choose from on Mexico to Lambert-St Louis flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

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

You could potentially save up to 11% 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 05m

Direct flights

Every day

Airports in St. Louis

1 airport
The fastest flight from Mexico to St. Louis takes 3h 05m
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

  • 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 $452Free CancellationRating
7.4
9,236 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
Florissant
O'Fallon
Collinsville
St. Peters
Fenton
Wentzville
Alton
Farmington
Clayton
Edwardsville
Eureka
Festus
Litchfield
Glencoe
Shrewsbury

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

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