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Cheap flights from Monterrey to St. Louis from $225

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Monterrey to St. Louis departing on 3/24. 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 Monterrey to St. Louis

Cheap round-trip flights

Enter your travel dates to find the best prices.
Multiple Airlines Logo
8:45 am - 11:19 pm
MTY
-
STL
13h 34m
2 stops
Multiple Airlines Logo
8:12 pm - 6:05 pm
STL
-
MTY
22h 53m
1 stop
$559Multiple Airlines
Fri, Mar 13 - Fri, Mar 20
United Airlines Logo
12:35 pm - 9:42 pm
MTY
-
STL
8h 07m
1 stop
United Airlines Logo
6:00 am - 3:06 pm
STL
-
MTY
10h 06m
1 stop
$573United Airlines
Fri, Mar 13 - Fri, Mar 20
Multiple Airlines Logo
6:29 pm - 9:49 am
MTY
-
STL
62h 20m
3 stops
Multiple Airlines Logo
8:12 pm - 10:50 pm
STL
-
MTY
27h 38m
2 stops
$590Multiple Airlines
Fri, Mar 13 - Fri, Mar 20
United Airlines Logo
5:00 pm - 10:36 am
MTY
-
STL
16h 36m
2 stops
United Airlines Logo
10:00 am - 8:45 pm
STL
-
MTY
11h 45m
2 stops
$612United Airlines
Fri, Mar 13 - Fri, Mar 20

United Airlines flights from Monterrey to St. Louis

Our best United Airlines deals on Monterrey to St. Louis flight tickets
United Airlines
Mar 13
MTY12:35 pmMonterrey Gen Mariano Escobedo
8h 07m
1 stop
STL9:42 pmLambert-St Louis
Mar 20
STL6:00 amLambert-St Louis
10h 06m
1 stop
MTY3:06 pmMonterrey Gen Mariano Escobedo
$573
United Airlines
Mar 13
MTY5:00 pmMonterrey Gen Mariano Escobedo
16h 36m
2 stops
STL10:36 amLambert-St Louis
Mar 20
STL10:00 amLambert-St Louis
11h 45m
2 stops
MTY8:45 pmMonterrey Gen Mariano Escobedo
$612
United Airlines
Jan 30
MTY1:35 pmMonterrey Gen Mariano Escobedo
7h 38m
1 stop
STL9:13 pmLambert-St Louis
Feb 5
STL6:00 amLambert-St Louis
15h 45m
1 stop
MTY9:45 pmMonterrey Gen Mariano Escobedo
$793

momondo Fare Finder

 
Customize your flight search to find flights from Monterrey 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 January 28, 2026.
Use the filters below to find and compare flights from Monterrey to St. Louis that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

MonterreySt. Louis

MTY - STL

MTYSTL

Monterrey Gen Mariano Escobedo

Fri 3/13

8:45 am-11:19 pm

2 stops13h 34m

Lambert-St Louis

Fri 3/20

8:12 pm-6:05 pm

1 stop22h 53m

$559

MonterreySt. Louis

MTY - STL

MTYSTL

Monterrey Gen Mariano Escobedo

Fri 3/13

12:35 pm-9:42 pm

1 stop8h 07m

Lambert-St Louis

Fri 3/20

6:00 am-3:06 pm

1 stop10h 06m

$573

MonterreySt. Louis

MTY - STL

MTYSTL

Monterrey Gen Mariano Escobedo

Fri 3/13

6:29 pm-9:49 am

3 stops62h 20m

Lambert-St Louis

Fri 3/20

8:12 pm-10:50 pm

2 stops27h 38m

$590

MonterreySt. Louis

MTY - STL

MTYSTL

Monterrey Gen Mariano Escobedo

Fri 3/13

5:00 pm-10:36 am

2 stops16h 36m

Lambert-St Louis

Fri 3/20

10:00 am-8:45 pm

2 stops11h 45m

$612

MonterreySt. Louis

MTY - STL

MTYSTL

Monterrey Gen Mariano Escobedo

Tue 3/24

3:41 pm-10:31 am

2 stops41h 50m

$225

MonterreySt. Louis

MTY - STL

MTYSTL

Monterrey Gen Mariano Escobedo

Tue 3/24

12:00 pm-11:19 am

1 stop22h 19m

$263

MonterreySt. Louis

MTY - STL

MTYSTL

Monterrey Gen Mariano Escobedo

Tue 3/24

12:00 pm-9:49 am

3 stops20h 49m

$269

Flights are sorted by cheapest round-trip flights first.

Sorted by cheapest first

When to book flights from Monterrey to St. Louis

Are you open to changing your travel dates? Check out the ideal times to fly from Monterrey to St. Louis according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap Monterrey to St. Louis (MTY to STL) flight deals and tips

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

Fastest flight time

9h 47m

Direct flights

None
The fastest flight from Monterrey to St. Louis takes 9h 47m
There are no direct flights from Monterrey to St. Louis. There are no popular flight routes from Monterrey to St. Louis.
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  • How far is Monterrey Gen Mariano Escobedo to Lambert-St Louis by plane?

    Lambert-St Louis is 1070.6 mi away from Monterrey Gen Mariano Escobedo. Flights usually cover this in 9h 47m, depending on flying conditions and air traffic around both airports.

  • When did momondo last update prices for flights from Monterrey Gen Mariano Escobedo Airport to Lambert-St Louis Airport?

    Prices for flights from Monterrey Gen Mariano Escobedo Airport to Lambert-St Louis Airport refresh daily.

  • How old do you have to be to fly from Monterrey Gen Mariano Escobedo Airport to Lambert-St Louis Airport?

    The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Monterrey Gen Mariano Escobedo Airport to Lambert-St Louis Airport.

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

    The necessary travel and health documents for your Lambert-St Louis Airport trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

  • How do I get Price Alerts for flights from Monterrey to St. Louis?

    Confirm your travel details to search for the latest offers for flights from Monterrey to St. Louis. While browsing offers there will be the option to toggle “Price Alerts”. You’ll then receive updates when prices for the flight route increase or decrease.

  • How can I save money on flights from Monterrey to St. Louis with momondo?

    With “Price Forecast”, learn how soon you should book your flight in advance. Down to the day of week and time of day, our information can inform you on the ideal time to book to save on your travel. Our “Price Calendar” shows you at a quick glance when to book your travel for lower rates. By setting “Price Alerts” you can monitor changes in price and target the ideal time to book. Search for your trip destination by budget amount via our “Explore” feature. Whether you’re looking for ideas for your next travel adventure or cost-cutting tips, our “Discover” content is a great place to start.

  • How does momondo find its flight prices?

    momondo shows deals across 700+ competitors all at once. momondo is active in 30 international markets, so you can have access to a wide range of options from airlines and OTAs alike.

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
Fenton
St. Peters
Wentzville
Alton
Farmington
Clayton
Edwardsville
Eureka
Festus
Glencoe
Litchfield
Shrewsbury

Why use momondo?

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

momondo collates all your flight options in one place and lets you filter them to find the perfect flight from Monterrey to St. Louis. momondo saves you time and could save you money on your trip.

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

Flights from Monterrey to St. Louis 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 Monterrey to St. Louis?

momondo helps you find the best flight between Monterrey and St. Louis by providing filters to narrow your choice of flights to those matching your criteria. You can select flights based on numerous factors such as price, departure and landing times, airport and airline.

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

If you are not ready to book a flight from Monterrey to St. Louis now, use our insights above to find helpful tips or alternatively set up a price alert, where momondo will track prices on flights to St. Louis and let you know when they change.

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