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$471+ Cheap flights from Monterrey (MTY) to St. Louis (STL)

This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 9/21. Fares are subject to change and may not be available on all flights or dates of travel.
MTY — STL
Oct 11 — Oct 181
Sat 10/11
Sat 10/18
1 adult, Economy
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Cheap flight deals from Monterrey to St. Louis

Discover tips and strategies to find the most affordable flight options for your journey from Monterrey (MTY) to St. Louis (STL). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated September 11, 2025.

Round-trip from

$471
(Kiwi.com)

Popular in

May

Cheapest in

April
From Monterrey Gen Mariano Escobedo to Lambert-St Louis
Search Deals
Highest demand for flights based on searches. 12% potential increase in price ($97 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 5% potential price decrease ($36 potential savings vs. average RT price).
Search Deals

Find flight deals from Monterrey to St. Louis

Cheapest flights from Monterrey to St. Louis
Explore the most affordable flight options available from Monterrey to St. Louis. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 11, 2025.

This Kiwi.com deal was found by Cheapflights users on 9/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/219:25 pmMTY - STL
1 stop19h 45mMultiple Airlines
Fri 9/269:35 pmSTL - MTY
2 stops19h 20mMultiple Airlines
Deal found 9/11$471
This American Airlines deal was found by Cheapflights users on 9/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/218:00 amMTY - STL
1 stop13h 23mAmerican Airlines
Fri 9/265:18 amSTL - MTY
1 stop9h 10mAmerican Airlines
Deal found 9/11$740
This Delta deal was found by Cheapflights users on 9/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/2112:12 pmMTY - STL
1 stop10h 12mDelta
Fri 9/266:01 amSTL - MTY
1 stop6h 01mDelta
Deal found 9/10$785

Cheapflights 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, Cheapflights users made 2,558,603 searches. Data last updated September 11, 2025.
Use the filters below to find and compare flights from Monterrey to St. Louis that are best for you.

Fly from

Monterrey

Fly to

St. Louis

Route

Depart

Return

Price

MonterreySt. Louis

MTY - STL

MTYSTL

Monterrey Gen Mariano Escobedo

Sun 9/21

9:25 pm-6:10 pm

1 stop19h 45m

Lambert-St Louis

Fri 9/26

9:35 pm-3:55 pm

2 stops19h 20m

$471

MonterreySt. Louis

MTY - STL

MTYSTL

Monterrey Gen Mariano Escobedo

Sun 3/1

8:50 am-4:35 pm

1 stop7h 45m

Lambert-St Louis

Thu 3/5

9:13 am-8:36 pm

2 stops11h 23m

$487

MonterreySt. Louis

MTY - STL

MTYSTL

Monterrey Gen Mariano Escobedo

Sun 3/1

8:39 am-6:04 pm

1 stop9h 25m

Lambert-St Louis

Thu 3/5

11:51 am-6:57 pm

1 stop7h 06m

$487

MonterreySt. Louis

MTY - STL

MTYSTL

Monterrey Gen Mariano Escobedo

Sun 9/21

8:00 am-10:23 pm

1 stop13h 23m

Lambert-St Louis

Fri 9/26

5:18 am-1:28 pm

1 stop9h 10m

$740

MonterreySt. Louis

MTY - STL

MTYSTL

Monterrey Gen Mariano Escobedo

Sun 9/21

8:05 am-4:05 pm

1 stop7h 00m

Lambert-St Louis

Fri 9/26

6:01 am-5:05 pm

2 stops12h 04m

$785

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/11

Best time to book a flight from Monterrey to St. Louis

Have a flexible travel schedule? Discover the best time to fly to St. Louis from Monterrey with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Related info for your journey

Find useful and relevant information for your journey from Monterrey to St. Louis. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • How long is the flight from Monterrey to St. Louis?

    A quick flight from Monterrey to St. Louis can take about 7h 45m. United Airlines provides one of the quickest options available for as low as $487. There are 1059 mi between Monterrey and St. Louis. Both multi-stop and nonstop flights can be found to your destination and back.

  • Can I find deals for flights from Monterrey to St. Louis that include hotel bookings?

    Yes. In addition to deals on Monterrey to St. Louis flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Monterrey to St. Louis?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Monterrey to St. Louis.

  • Can I find deals for business class flights from Monterrey to St. Louis?

    Yes. Cheapflights offers flight deals from Monterrey to St. Louis by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Monterrey to St. Louis?

    Currently, August is the cheapest month in which you can book a flight from Monterrey to St. Louis (average of $311). Flying from Monterrey to St. Louis in March is currently the most expensive (average of $356). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Traveling to a place near St. Louis?

Book flights to St. Louis if you plan to visit one of these locations
Edwardsville
O'Fallon
Fairview Heights
Maryland Heights
Collinsville
Eureka
Glencoe
St. Peters
Chesterfield
Alton
Farmington
Festus

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