Cheap flights from Mexico to St. Louis from $111

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 12/11. 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

Discover deals from 900+ travel sites with momondo.

Save money when you book flights with momondo

Big names and deals

Big names and deals

Search 100s of travel sites to compare prices.

Filter for what you want

Filter for what you want

Free Wi-Fi? Stopover? Instantly customize your results.

Trusted and free

Trusted and free

We’re completely free to use - no hidden charges or fees.

Price Alerts

Price Alerts

Not ready to book? to track prices.

Find the cheapest flights from Mexico to St. Louis

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

Frontier Logo
2:49 pm - 6:10 pmCUN-STL
3h 21mnonstop
Frontier Logo
10:21 am - 1:34 pmSTL-CUN
3h 13mnonstop
$234Frontier
Find Deal
Wed, Oct 1 - Sat, Oct 4
Multiple Airlines Logo
2:49 pm - 6:10 pmCUN-STL
3h 21mnonstop
Multiple Airlines Logo
4:05 pm - 9:20 amSTL-CUN
17h 15m1 stop
$327Multiple Airlines
Find Deal
Wed, Oct 1 - Sat, Oct 4
Air Canada Logo
10:10 pm - 3:29 pmCUN-STL
18h 19m1 stop
Air Canada Logo
4:05 pm - 9:15 pmSTL-CUN
28h 10m1 stop
$380Air Canada
Find Deal
Wed, Nov 12 - Wed, Nov 19
United Airlines Logo
2:40 pm - 10:51 amPVR-STL
19h 11m2 stops
United Airlines Logo
4:43 pm - 10:47 amSTL-PVR
18h 04m2 stops
$415United Airlines
Find Deal
Fri, Oct 31 - Fri, Nov 7
United Airlines Logo
8:39 am - 3:50 pmCUN-STL
8h 11m1 stop
United Airlines Logo
8:00 am - 8:18 pmSTL-CUN
11h 18m2 stops
$420United Airlines
Find Deal
Wed, Nov 12 - Wed, Nov 19
Aeromexico Logo
11:14 am - 8:39 pmCUN-STL
10h 25m2 stops
Aeromexico Logo
6:00 am - 12:30 pmSTL-CUN
5h 30m1 stop
$421Aeromexico
Find Deal
Thu, Feb 19 - Sun, Feb 22
Aeromexico Logo
11:14 am - 8:39 pmCUN-STL
10h 25m2 stops
Aeromexico Logo
10:00 am - 4:31 pmSTL-CUN
5h 31m1 stop
$422Aeromexico
Find Deal
Thu, Feb 19 - Sun, Feb 22
Air Canada Logo
10:10 pm - 3:29 pmCUN-STL
18h 19m1 stop
Air Canada Logo
4:05 pm - 9:05 pmSTL-CUN
28h 00m1 stop
$456Air Canada
Find Deal
Mon, Mar 2 - Fri, Mar 6
Delta Logo
2:06 pm - 11:40 pmCZM-STL
9h 34m2 stops
Delta Logo
6:00 am - 1:05 pmSTL-CZM
8h 05m1 stop
$457Delta
Find Deal
Thu, Feb 26 - Tue, Mar 10
Delta Logo
12:25 pm - 6:04 pmCUN-STL
6h 39m1 stop
Delta Logo
7:05 pm - 9:00 amSTL-CUN
13h 55m1 stop
$477Delta
Find Deal
Thu, Feb 26 - Sun, Mar 8

Aeromexico flights from Mexico to St. Louis

Our best Aeromexico deals on Mexico to St. Louis flight tickets
Aeromexico
Feb 19
CUN11:14 amCancun
10h 25m
2 stops
STL8:39 pmLambert-St Louis
Feb 22
STL6:00 amLambert-St Louis
5h 30m
1 stop
CUN12:30 pmCancun
Aeromexico
Feb 19
CUN11:14 amCancun
10h 25m
2 stops
STL8:39 pmLambert-St Louis
Feb 22
STL10:00 amLambert-St Louis
5h 31m
1 stop
CUN4:31 pmCancun
Aeromexico
Dec 9
MEX10:30 amMexico City Benito Juarez
11h 28m
2 stops
STL9:58 pmLambert-St Louis
Jan 13
STL6:00 amLambert-St Louis
13h 25m
2 stops
MEX7:25 pmMexico City Benito Juarez

Delta flights from Mexico to St. Louis

Our best Delta deals on Mexico to St. Louis flight tickets
Delta
Feb 26
CZM2:06 pmCozumel
9h 34m
2 stops
STL11:40 pmLambert-St Louis
Mar 10
STL6:00 amLambert-St Louis
8h 05m
1 stop
CZM1:05 pmCozumel
Delta
Feb 26
CUN12:25 pmCancun
6h 39m
1 stop
STL6:04 pmLambert-St Louis
Mar 8
STL7:05 pmLambert-St Louis
13h 55m
1 stop
CUN9:00 amCancun
Delta
Mar 1
MTY1:45 pmMonterrey Gen Mariano Escobedo
6h 54m
1 stop
STL8:39 pmLambert-St Louis
Mar 5
STL11:51 amLambert-St Louis
7h 06m
1 stop
MTY6:57 pmMonterrey Gen Mariano Escobedo

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 September 17, 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

Wed 10/1

2:49 pm-6:10 pm

Nonstop3h 21m

Lambert-St Louis

Sat 10/4

10:21 am-1:34 pm

Nonstop3h 13m

$234

CancúnSt. Louis

CUN - STL

CUNSTL

Cancun

Wed 10/1

2:49 pm-6:10 pm

Nonstop3h 21m

Lambert-St Louis

Sat 10/4

4:05 pm-9:20 am

1 stop17h 15m

$327

CancúnSt. Louis

CUN - STL

CUNSTL

Cancun

Wed 11/12

10:10 pm-3:29 pm

1 stop18h 19m

Lambert-St Louis

Wed 11/19

4:05 pm-9:15 pm

1 stop28h 10m

$380

Puerto VallartaSt. Louis

PVR - STL

PVRSTL

Puerto Vallarta Ordaz

Fri 10/31

2:40 pm-10:51 am

2 stops19h 11m

Lambert-St Louis

Fri 11/7

4:43 pm-10:47 am

2 stops18h 04m

$415

CancúnSt. Louis

CUN - STL

CUNSTL

Cancun

Wed 11/12

8:39 am-3:50 pm

1 stop8h 11m

Lambert-St Louis

Wed 11/19

8:00 am-8:18 pm

2 stops11h 18m

$420

CancúnSt. Louis

CUN - STL

CUNSTL

Cancun

Thu 2/19

11:14 am-8:39 pm

2 stops10h 25m

Lambert-St Louis

Sun 2/22

6:00 am-12:30 pm

1 stop5h 30m

$421

CancúnSt. Louis

CUN - STL

CUNSTL

Cancun

Thu 2/19

11:14 am-8:39 pm

2 stops10h 25m

Lambert-St Louis

Sun 2/22

10:00 am-4:31 pm

1 stop5h 31m

$422

CancúnSt. Louis

CUN - STL

CUNSTL

Cancun

Mon 3/2

10:10 pm-3:29 pm

1 stop18h 19m

Lambert-St Louis

Fri 3/6

4:05 pm-9:05 pm

1 stop28h 00m

$456

CozumelSt. Louis

CZM - STL

CZMSTL

Cozumel

Thu 2/26

2:06 pm-11:40 pm

2 stops9h 34m

Lambert-St Louis

Tue 3/10

6:00 am-1:05 pm

1 stop8h 05m

$457

CancúnSt. Louis

CUN - STL

CUNSTL

Cancun

Thu 2/26

12:25 pm-6:04 pm

1 stop6h 39m

Lambert-St Louis

Sun 3/8

7:05 pm-9:00 am

1 stop13h 55m

$477

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
1
2

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 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 $194 when looking at flights departing in the morning. At noon is when there is more demand to fly to St. Louis, so prices are often more expensive at around $398 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.

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

No. A direct flight is the cheapest option for a flight between Mexico to St. Louis.

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

$183

Fastest flight time

3h 09m

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 $183. The best round-trip flight deal from Mexico to St. Louis found on momondo in the last 72 hours is $372.
The fastest flight from Mexico to St. Louis takes 3h 09m
Direct flights go from Mexico to St. Louis every day.
There is 1 airport near St. Louis: Lambert-St Louis (STL)
  • 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
8,926 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
Fenton
Collinsville
Wentzville
Alton
St. Peters
Farmington
Festus
Glencoe
Clayton
Edwardsville
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.

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.
1 adult
Fri 10/17
Fri 10/24

Find better results for your trip to the United States