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Cheap flights from Mexico to St. Louis from $106

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 1/14. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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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.
Delta Logo
5:30 pm - 11:38 pmCUN-STL
7h 08m1 stop
Delta Logo
7:10 am - 9:10 pmSTL-CUN
13h 00m1 stop
$280Delta
Find Deal
Thu, Feb 19 - Sun, Feb 22
Delta Logo
11:10 am - 5:43 pmCUN-STL
7h 33m1 stop
Delta Logo
7:10 am - 9:10 pmSTL-CUN
13h 00m1 stop
$281Delta
Find Deal
Thu, Feb 19 - Sun, Feb 22
Frontier Logo
1:01 pm - 3:26 pmCUN-STL
3h 25mnonstop
Frontier Logo
6:00 am - 10:23 amSTL-CUN
3h 23mnonstop
$423Frontier
Find Deal
Thu, Feb 19 - Sun, Feb 22
Frontier Logo
1:01 pm - 3:26 pmCUN-STL
3h 25mnonstop
Frontier Logo
6:00 am - 10:23 amSTL-CUN
3h 23mnonstop
$424Frontier
Find Deal
Thu, Feb 19 - Sun, Feb 22
Air Canada Logo
1:25 pm - 3:24 pmPVR-STL
24h 59m1 stop
Air Canada Logo
4:05 pm - 12:20 pmSTL-PVR
21h 15m1 stop
$433Air Canada
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Wed, Apr 15 - Sun, Apr 19
United Airlines Logo
8:39 am - 3:38 pmCUN-STL
7h 59m1 stop
United Airlines Logo
8:21 am - 5:50 pmSTL-CUN
8h 29m2 stops
$454United Airlines
Find Deal
Thu, Feb 19 - Sun, Feb 22
United Airlines Logo
1:21 pm - 2:18 pmCZM-STL
23h 57m2 stops
United Airlines Logo
5:18 pm - 12:19 pmSTL-CZM
20h 01m2 stops
$454United Airlines
Find Deal
Tue, Apr 14 - Sat, Apr 18
Multiple Airlines Logo
3:45 pm - 10:33 pmMEX-STL
30h 48m2 stops
Multiple Airlines Logo
5:44 pm - 8:05 pmSTL-MEX
26h 21m1 stop
$456Multiple Airlines
Find Deal
Wed, Dec 24 - Mon, Jan 12
Multiple Airlines Logo
10:20 pm - 2:47 pmMEX-STL
16h 27m1 stop
Multiple Airlines Logo
5:06 pm - 10:30 pmSTL-MEX
29h 24m2 stops
$477Multiple Airlines
Find Deal
Wed, Dec 24 - Tue, Jan 13
Air Canada Logo
1:25 pm - 3:24 pmPVR-STL
24h 59m1 stop
Air Canada Logo
4:05 pm - 12:20 pmSTL-PVR
21h 15m1 stop
$478Air Canada
Find Deal
Wed, Apr 15 - Sun, Apr 19

Air Canada flights from Mexico to St. Louis

Our best Air Canada deals on Mexico to St. Louis flight tickets
Air Canada
Apr 15
PVR1:25 pmPuerto Vallarta Ordaz
24h 59m
1 stop
STL3:24 pmLambert-St Louis
Apr 19
STL4:05 pmLambert-St Louis
21h 15m
1 stop
PVR12:20 pmPuerto Vallarta Ordaz
$433
Find similar
Air Canada
Apr 15
PVR1:25 pmPuerto Vallarta Ordaz
24h 59m
1 stop
STL3:24 pmLambert-St Louis
Apr 19
STL4:05 pmLambert-St Louis
21h 15m
1 stop
PVR12:20 pmPuerto Vallarta Ordaz
$478
Find similar

American Airlines flights from Mexico to St. Louis

Our best American Airlines deals on Mexico to St. Louis flight tickets
American Airlines
Dec 18
BJX12:13 pmLeón Del Bajio
10h 43m
1 stop
STL10:56 pmLambert-St Louis
Jan 1
STL11:41 amLambert-St Louis
12h 12m
1 stop
BJX11:53 pmLeón Del Bajio
$528
Find similar
American Airlines
Dec 18
BJX12:13 pmLeón Del Bajio
10h 43m
1 stop
STL10:56 pmLambert-St Louis
Jan 2
STL6:44 pmLambert-St Louis
16h 29m
1 stop
BJX11:13 amLeón Del Bajio
$549
Find similar
American Airlines
Dec 1
MTY7:20 pmMonterrey Gen Mariano Escobedo
13h 36m
1 stop
STL8:56 amLambert-St Louis
Dec 8
STL5:30 pmLambert-St Louis
20h 52m
1 stop
MTY2:22 pmMonterrey Gen Mariano Escobedo
$557
Find similar

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 November 4, 2025.
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

5:30 pm-11:38 pm

1 stop7h 08m

Lambert-St Louis

Sun 2/22

7:10 am-9:10 pm

1 stop13h 00m

$280

CancúnSt. Louis

CUN - STL

CUNSTL

Cancun

Thu 2/19

11:10 am-5:43 pm

1 stop7h 33m

Lambert-St Louis

Sun 2/22

7:10 am-9:10 pm

1 stop13h 00m

$281

CancúnSt. Louis

CUN - STL

CUNSTL

Cancun

Thu 2/19

1:01 pm-3:26 pm

Nonstop3h 25m

Lambert-St Louis

Sun 2/22

6:00 am-10:23 am

Nonstop3h 23m

$423

CancúnSt. Louis

CUN - STL

CUNSTL

Cancun

Thu 2/19

1:01 pm-3:26 pm

Nonstop3h 25m

Lambert-St Louis

Sun 2/22

6:00 am-10:23 am

Nonstop3h 23m

$424

Puerto VallartaSt. Louis

PVR - STL

PVRSTL

Puerto Vallarta Ordaz

Wed 4/15

1:25 pm-3:24 pm

1 stop24h 59m

Lambert-St Louis

Sun 4/19

4:05 pm-12:20 pm

1 stop21h 15m

$433

CancúnSt. Louis

CUN - STL

CUNSTL

Cancun

Thu 2/19

8:39 am-3:38 pm

1 stop7h 59m

Lambert-St Louis

Sun 2/22

8:21 am-5:50 pm

2 stops8h 29m

$454

CozumelSt. Louis

CZM - STL

CZMSTL

Cozumel

Tue 4/14

1:21 pm-2:18 pm

2 stops23h 57m

Lambert-St Louis

Sat 4/18

5:18 pm-12:19 pm

2 stops20h 01m

$454

Mexico CitySt. Louis

MEX - STL

MEXSTL

Mexico City Benito Juarez

Wed 12/24

3:45 pm-10:33 pm

2 stops30h 48m

Lambert-St Louis

Mon 1/12

5:44 pm-8:05 pm

1 stop26h 21m

$456

Mexico CitySt. Louis

MEX - STL

MEXSTL

Mexico City Benito Juarez

Wed 12/24

10:20 pm-2:47 pm

1 stop16h 27m

Lambert-St Louis

Tue 1/13

5:06 pm-10:30 pm

2 stops29h 24m

$477

Puerto VallartaSt. Louis

PVR - STL

PVRSTL

Puerto Vallarta Ordaz

Wed 4/15

1:25 pm-3:24 pm

1 stop24h 59m

Lambert-St Louis

Sun 4/19

4:05 pm-12:20 pm

1 stop21h 15m

$478

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 Thursday 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 Saturday because tickets tend to average around $237. 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 $189 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

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.

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

Best Price Found

$192

Fastest flight time

3h 10m

Direct flights

Every day

Airports in St. Louis

1 airport
The best one-way flight to St. Louis from Mexico in the past 72 hours is $192. The best round-trip flight deal from Mexico to St. Louis found on momondo in the last 72 hours is $187.
The fastest flight from Mexico to St. Louis takes 3h 10m
Direct flights go from Mexico to St. Louis every day.
There is 1 airport near St. Louis: 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 $441Free CancellationRating
7.4
9,002 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
Florissant
Maryland Heights
O'Fallon
Wentzville
Fenton
Collinsville
St. Peters
Alton
Farmington
Festus
Glencoe
Edwardsville
Clayton
Eureka
Litchfield
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

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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