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Cheap flights from Monterrey to St. Louis from $189

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 10/4. 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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Find the cheapest flights from Monterrey to St. Louis

Cheap round-trip flights

United Airlines Logo
8:50 am - 4:35 pmMTY-STL
7h 45m1 stop
United Airlines Logo
9:13 am - 8:36 pmSTL-MTY
11h 23m2 stops
$487United Airlines
Find Deal
Sun, Mar 1 - Thu, Mar 5
United Airlines Logo
1:10 pm - 10:06 pmMTY-STL
8h 56m1 stop
United Airlines Logo
6:45 am - 3:59 pmSTL-MTY
9h 14m2 stops
$566United Airlines
Find Deal
Sun, Mar 1 - Thu, Mar 5
United Airlines Logo
6:30 am - 2:18 pmMTY-STL
7h 48m2 stops
United Airlines Logo
9:13 am - 6:11 pmSTL-MTY
8h 58m2 stops
$655United Airlines
Find Deal
Sun, Mar 1 - Thu, Mar 5
United Airlines Logo
6:30 am - 3:21 pmMTY-STL
8h 51m2 stops
United Airlines Logo
6:45 am - 3:59 pmSTL-MTY
9h 14m2 stops
$696United Airlines
Find Deal
Sun, Mar 1 - Thu, Mar 5
Delta Logo
12:12 pm - 11:24 pmMTY-STL
10h 12m1 stop
Delta Logo
6:01 am - 11:02 amSTL-MTY
6h 01m1 stop
$785Delta
Find Deal
Sun, Sep 21 - Fri, Sep 26
Delta Logo
5:47 am - 9:15 pmMTY-STL
14h 28m2 stops
Delta Logo
6:01 am - 6:12 pmSTL-MTY
13h 11m2 stops
$824Delta
Find Deal
Sun, Sep 21 - Fri, Sep 26

United Airlines flights from Monterrey to St. Louis

Our best United Airlines deals on Monterrey to St. Louis flight tickets
United Airlines
Mar 1
MTY8:50 amMonterrey Gen Mariano Escobedo
7h 45m
1 stop
STL4:35 pmLambert-St Louis
Mar 5
STL9:13 amLambert-St Louis
11h 23m
2 stops
MTY8:36 pmMonterrey Gen Mariano Escobedo
$487
Find similar
United Airlines
Mar 1
MTY1:10 pmMonterrey Gen Mariano Escobedo
8h 56m
1 stop
STL10:06 pmLambert-St Louis
Mar 5
STL6:45 amLambert-St Louis
9h 14m
2 stops
MTY3:59 pmMonterrey Gen Mariano Escobedo
$566
Find similar
United Airlines
Mar 1
MTY6:30 amMonterrey Gen Mariano Escobedo
7h 48m
2 stops
STL2:18 pmLambert-St Louis
Mar 5
STL9:13 amLambert-St Louis
8h 58m
2 stops
MTY6:11 pmMonterrey Gen Mariano Escobedo
$655
Find similar

Delta flights from Monterrey to St. Louis

Our best Delta deals on Monterrey to St. Louis flight tickets
Delta
Sep 21
MTY12:12 pmMonterrey Gen Mariano Escobedo
10h 12m
1 stop
STL11:24 pmLambert-St Louis
Sep 26
STL6:01 amLambert-St Louis
6h 01m
1 stop
MTY11:02 amMonterrey Gen Mariano Escobedo
$785
Find similar
Delta
Sep 21
MTY5:47 amMonterrey Gen Mariano Escobedo
14h 28m
2 stops
STL9:15 pmLambert-St Louis
Sep 26
STL6:01 amLambert-St Louis
13h 11m
2 stops
MTY6:12 pmMonterrey Gen Mariano Escobedo
$824
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 September 11, 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

8:50 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

1:10 pm-10:06 pm

1 stop8h 56m

Lambert-St Louis

Thu 3/5

6:45 am-3:59 pm

2 stops9h 14m

$566

MonterreySt. Louis

MTY - STL

MTYSTL

Monterrey Gen Mariano Escobedo

Sun 3/1

6:30 am-2:18 pm

2 stops7h 48m

Lambert-St Louis

Thu 3/5

9:13 am-6:11 pm

2 stops8h 58m

$655

MonterreySt. Louis

MTY - STL

MTYSTL

Monterrey Gen Mariano Escobedo

Sun 3/1

6:30 am-3:21 pm

2 stops8h 51m

Lambert-St Louis

Thu 3/5

6:45 am-3:59 pm

2 stops9h 14m

$696

MonterreySt. Louis

MTY - STL

MTYSTL

Monterrey Gen Mariano Escobedo

Sun 9/21

12:12 pm-11:24 pm

1 stop10h 12m

Lambert-St Louis

Fri 9/26

6:01 am-11:02 am

1 stop6h 01m

$785

MonterreySt. Louis

MTY - STL

MTYSTL

Monterrey Gen Mariano Escobedo

Sun 9/21

5:47 am-9:15 pm

2 stops14h 28m

Lambert-St Louis

Fri 9/26

6:01 am-6:12 pm

2 stops13h 11m

$824

MonterreySt. Louis

MTY - STL

MTYSTL

Monterrey Gen Mariano Escobedo

Sat 10/4

11:50 am-9:54 am

2 stops21h 04m

$189

MonterreySt. Louis

MTY - STL

MTYSTL

Monterrey Gen Mariano Escobedo

Sat 10/4

11:15 am-9:54 am

1 stop21h 39m

$198

MonterreySt. Louis

MTY - STL

MTYSTL

Monterrey Gen Mariano Escobedo

Sat 10/4

11:50 am-3:04 pm

3 stops26h 14m

$261

Flights are sorted by cheapest round-trip flights first.

Sorted by cheapest first

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 7h 45m, 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
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 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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