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Cheap flights from Monterrey to St. Louis from $341

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 1/5. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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Cheap round-trip flights

Enter your travel dates to find the best prices.
Delta Logo
8:01 am - 5:43 pmMTY-STL
9h 42m1 stop
Delta Logo
7:10 am - 5:22 pmSTL-MTY
10h 12m1 stop
$485Delta
Find Deal
Sun, Mar 1 - Thu, Mar 5
Multiple Airlines Logo
8:20 pm - 1:50 pmMTY-STL
17h 30m1 stop
Multiple Airlines Logo
12:07 pm - 4:05 pmSTL-MTY
27h 58m2 stops
$486Multiple Airlines
Find Deal
Mon, Dec 1 - Mon, Dec 8
Multiple Airlines Logo
6:10 am - 1:50 pmMTY-STL
7h 40m1 stop
Multiple Airlines Logo
6:00 am - 11:44 amSTL-MTY
29h 44m1 stop
$496Multiple Airlines
Find Deal
Sat, Dec 6 - Thu, Dec 18
United Airlines Logo
6:00 pm - 10:04 amMTY-STL
16h 04m1 stop
United Airlines Logo
11:10 am - 9:40 amSTL-MTY
22h 30m1 stop
$501United Airlines
Find Deal
Mon, Dec 1 - Mon, Dec 8
United Airlines Logo
6:00 pm - 4:04 pmMTY-STL
22h 04m1 stop
United Airlines Logo
6:35 pm - 9:40 amSTL-MTY
15h 05m2 stops
$521United Airlines
Find Deal
Mon, Dec 15 - Mon, Dec 29
United Airlines Logo
6:00 pm - 12:15 pmMTY-STL
18h 15m2 stops
United Airlines Logo
4:37 pm - 9:40 amSTL-MTY
17h 03m2 stops
$522United Airlines
Find Deal
Mon, Dec 1 - Mon, Dec 8
United Airlines Logo
11:00 am - 10:59 pmMTY-STL
11h 59m2 stops
United Airlines Logo
6:00 am - 11:51 amSTL-MTY
5h 51m1 stop
$544United Airlines
Find Deal
Sun, Mar 1 - Thu, Mar 5
United Airlines Logo
1:10 pm - 10:59 pmMTY-STL
9h 49m2 stops
United Airlines Logo
5:00 am - 12:51 pmSTL-MTY
7h 51m1 stop
$546United Airlines
Find Deal
Sun, Mar 1 - Thu, Mar 5
American Airlines Logo
7:20 pm - 8:56 amMTY-STL
13h 36m1 stop
American Airlines Logo
5:30 pm - 2:22 pmSTL-MTY
20h 52m1 stop
$557American Airlines
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Mon, Dec 1 - Mon, Dec 8
American Airlines Logo
5:53 pm - 8:56 amMTY-STL
15h 03m1 stop
American Airlines Logo
6:44 pm - 10:07 amSTL-MTY
15h 23m1 stop
$796American Airlines
Find Deal
Fri, Dec 19 - Sun, Dec 21

United Airlines flights from Monterrey to St. Louis

Our best United Airlines deals on Monterrey to St. Louis flight tickets
United Airlines
Dec 1
MTY6:00 pmMonterrey Gen Mariano Escobedo
16h 04m
1 stop
STL10:04 amLambert-St Louis
Dec 8
STL11:10 amLambert-St Louis
22h 30m
1 stop
MTY9:40 amMonterrey Gen Mariano Escobedo
$501
Find similar
United Airlines
Dec 15
MTY6:00 pmMonterrey Gen Mariano Escobedo
22h 04m
1 stop
STL4:04 pmLambert-St Louis
Dec 29
STL6:35 pmLambert-St Louis
15h 05m
2 stops
MTY9:40 amMonterrey Gen Mariano Escobedo
$521
Find similar
United Airlines
Dec 1
MTY6:00 pmMonterrey Gen Mariano Escobedo
18h 15m
2 stops
STL12:15 pmLambert-St Louis
Dec 8
STL4:37 pmLambert-St Louis
17h 03m
2 stops
MTY9:40 amMonterrey Gen Mariano Escobedo
$522
Find similar

American Airlines flights from Monterrey to St. Louis

Our best American Airlines deals on Monterrey to St. Louis flight tickets
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
American Airlines
Dec 19
MTY5:53 pmMonterrey Gen Mariano Escobedo
15h 03m
1 stop
STL8:56 amLambert-St Louis
Dec 21
STL6:44 pmLambert-St Louis
15h 23m
1 stop
MTY10:07 amMonterrey Gen Mariano Escobedo
$796
Find similar

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 November 4, 2025.
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

Sun 3/1

8:01 am-5:43 pm

1 stop9h 42m

Lambert-St Louis

Thu 3/5

7:10 am-5:22 pm

1 stop10h 12m

$485

MonterreySt. Louis

MTY - STL

MTYSTL

Monterrey Gen Mariano Escobedo

Mon 12/1

8:20 pm-1:50 pm

1 stop17h 30m

Lambert-St Louis

Mon 12/8

12:07 pm-4:05 pm

2 stops27h 58m

$486

MonterreySt. Louis

MTY - STL

MTYSTL

Monterrey Gen Mariano Escobedo

Sat 12/6

6:10 am-1:50 pm

1 stop7h 40m

Lambert-St Louis

Thu 12/18

6:00 am-11:44 am

1 stop29h 44m

$496

MonterreySt. Louis

MTY - STL

MTYSTL

Monterrey Gen Mariano Escobedo

Mon 12/1

6:00 pm-10:04 am

1 stop16h 04m

Lambert-St Louis

Mon 12/8

11:10 am-9:40 am

1 stop22h 30m

$501

MonterreySt. Louis

MTY - STL

MTYSTL

Monterrey Gen Mariano Escobedo

Mon 12/15

6:00 pm-4:04 pm

1 stop22h 04m

Lambert-St Louis

Mon 12/29

6:35 pm-9:40 am

2 stops15h 05m

$521

MonterreySt. Louis

MTY - STL

MTYSTL

Monterrey Gen Mariano Escobedo

Mon 12/1

6:00 pm-12:15 pm

2 stops18h 15m

Lambert-St Louis

Mon 12/8

4:37 pm-9:40 am

2 stops17h 03m

$522

MonterreySt. Louis

MTY - STL

MTYSTL

Monterrey Gen Mariano Escobedo

Sun 3/1

11:00 am-10:59 pm

2 stops11h 59m

Lambert-St Louis

Thu 3/5

6:00 am-11:51 am

1 stop5h 51m

$544

MonterreySt. Louis

MTY - STL

MTYSTL

Monterrey Gen Mariano Escobedo

Sun 3/1

1:10 pm-10:59 pm

2 stops9h 49m

Lambert-St Louis

Thu 3/5

5:00 am-12:51 pm

1 stop7h 51m

$546

MonterreySt. Louis

MTY - STL

MTYSTL

Monterrey Gen Mariano Escobedo

Mon 12/1

7:20 pm-8:56 am

1 stop13h 36m

Lambert-St Louis

Mon 12/8

5:30 pm-2:22 pm

1 stop20h 52m

$557

MonterreySt. Louis

MTY - STL

MTYSTL

Monterrey Gen Mariano Escobedo

Fri 12/19

5:53 pm-8:56 am

1 stop15h 03m

Lambert-St Louis

Sun 12/21

6:44 pm-10:07 am

1 stop15h 23m

$796

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 16 resultsSorted by cheapest first
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See travel insights to St. Louis from

How to get the cheapest flight ticket from Monterrey 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 time of day to depart on your flight to St. Louis?

Flying to St. Louis from Monterrey in the afternoon is the least expensive time of day to depart. momondo users have found prices as low as $515 when looking at flights departing in the afternoon. In the morning is when there is more demand to fly to St. Louis, so prices are often more expensive at around $585 per ticket.

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

Direct flights

None
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 5h 01m, 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.

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 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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