$163+ Cheap flights from St. Louis (STL) to Monterrey (MTY)
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 12/12. Fares are subject to change and may not be available on all flights or dates of travel.
STL — MTY
Dec 10 — Dec 171
Round-trip
1 adult, Economy
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Find cheap flights from St. Louis to Monterrey with Cheapflights
1. Tell us where you want to go
Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”2. Select your favorite providers
We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.3. Compare prices and book
Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.Cheap flight deals from St. Louis to Monterrey
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Last-minute
One-way
Cheapest flights from St. Louis to MonterreyExplore the most affordable flight options available from St. Louis to Monterrey. Find the lowest fares from popular airlines and budget airlines, with prices last updated on November 10, 2026.
Explore the most affordable flight options available from St. Louis to Monterrey. Find the lowest fares from popular airlines and budget airlines, with prices last updated on November 10, 2026.
This Volaris deal was found by Cheapflights users on 11/7. 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 Volaris is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/156:00 am -
1 stop10h 13m
Tue 12/228:10 am -
1 stop8h 30m
Deal found 11/7![Volaris logo]()
$607
This Kiwi.com deal was found by Cheapflights users on 11/7. 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.
Wed 12/166:00 am -
1 stop26h 23m
Wed 12/237:30 pm -
2 stops39h 23m
Deal found 11/7![Multiple Airlines logo]()
$643
This Kiwi.com deal was found by Cheapflights users on 11/7. 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.
Tue 12/156:00 am -
1 stop7h 55m
Tue 12/226:55 am -
2 stops41h 46m
Deal found 11/7![Multiple Airlines logo]()
$661
This Kiwi.com deal was found by Cheapflights users on 11/9. 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.
Mon 11/306:00 am -
1 stop7h 55m
Tue 12/16:05 am -
2 stops29h 01m
Deal found 11/9![Multiple Airlines logo]()
$692
This United Airlines deal was found by Cheapflights users on 11/7. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/166:00 am -
1 stop5h 51m
Wed 12/231:35 pm -
1 stop7h 47m
Deal found 11/7![United Airlines logo]()
$708
Best flights from St. Louis to MonterreyDiscover carefully curated flight deals from St. Louis to Monterrey that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated November 10, 2026.
Discover carefully curated flight deals from St. Louis to Monterrey that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated November 10, 2026.
This Volaris deal was found by Cheapflights users on 11/7. 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 Volaris is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/156:00 am -
1 stop10h 13m
Tue 12/228:10 am -
1 stop8h 30m
Deal found 11/7![Volaris logo]()
$607
This Kiwi.com deal was found by Cheapflights users on 11/7. 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.
Wed 12/166:00 am -
1 stop26h 23m
Wed 12/237:30 pm -
2 stops39h 23m
Deal found 11/7![Multiple Airlines logo]()
$643
This Aeromexico deal was found by Cheapflights users on 11/5. 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 Aeromexico is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 3/286:00 am -
2 stops26h 51m
Mon 3/2912:55 pm -
1 stop9h 44m
Deal found 11/5![Aeromexico logo]()
$707
This United Airlines deal was found by Cheapflights users on 11/7. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/166:00 am -
1 stop5h 51m
Wed 12/231:35 pm -
1 stop7h 47m
Deal found 11/7![United Airlines logo]()
$708
This American Airlines deal was found by Cheapflights users on 11/5. 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 11/228:47 am -
1 stop9h 33m
Sun 11/295:30 pm -
1 stop6h 48m
Deal found 11/5![American Airlines logo]()
$931
This Kiwi.com deal was found by Cheapflights users on 11/7. 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.
Tue 12/156:00 am -
1 stop7h 55m
Tue 12/226:55 am -
2 stops41h 46m
Deal found 11/7![Multiple Airlines logo]()
$661
This Kiwi.com deal was found by Cheapflights users on 11/9. 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.
Mon 11/306:00 am -
1 stop7h 55m
Tue 12/16:05 am -
2 stops29h 01m
Deal found 11/9![Multiple Airlines logo]()
$692
This United Airlines deal was found by Cheapflights users on 11/9. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/208:22 am -
2 stops25h 23m
Sat 1/911:00 am -
1 stop22h 31m
Deal found 11/9![United Airlines logo]()
$943
Last-minute flights from St. Louis to MonterreyDiscover last-minute flight deals from St. Louis to Monterrey. Data last updated November 10, 2026 and is based on user searches.
Discover last-minute flight deals from St. Louis to Monterrey. Data last updated November 10, 2026 and is based on user searches.
This Kiwi.com deal was found by Cheapflights users on 11/9. 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.
Mon 11/306:00 am -
1 stop7h 55m
Tue 12/16:05 am -
2 stops29h 01m
Deal found 11/9![Multiple Airlines logo]()
$692
This Volaris deal was found by Cheapflights users on 11/7. 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 Volaris is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/156:00 am -
1 stop10h 13m
Tue 12/228:10 am -
1 stop8h 30m
Deal found 11/7![Volaris logo]()
$607
This Kiwi.com deal was found by Cheapflights users on 11/7. 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.
Tue 12/156:00 am -
1 stop7h 55m
Tue 12/226:55 am -
2 stops41h 46m
Deal found 11/7![Multiple Airlines logo]()
$661
This Kiwi.com deal was found by Cheapflights users on 11/7. 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.
Wed 12/166:00 am -
1 stop26h 23m
Wed 12/237:30 pm -
2 stops39h 23m
Deal found 11/7![Multiple Airlines logo]()
$643
This United Airlines deal was found by Cheapflights users on 11/7. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/166:00 am -
1 stop5h 51m
Wed 12/231:35 pm -
1 stop7h 47m
Deal found 11/7![United Airlines logo]()
$708
One-way flights from St. Louis to MonterreySearch for one-way flight options from St. Louis to Monterrey. Find affordable one-way fares based on user searches. Data last updated November 10, 2026.
Search for one-way flight options from St. Louis to Monterrey. Find affordable one-way fares based on user searches. Data last updated November 10, 2026.
This Frontier deal was found by Cheapflights users on 11/9. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/126:00 am -
1 stop10h 13m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 11/9![Frontier logo]()
$163
This Kiwi.com deal was found by Cheapflights users on 11/9. 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.
Sat 12/127:54 pm -
2 stops27h 51m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 11/9![Multiple Airlines logo]()
$234
This Volaris deal was found by Cheapflights users on 11/7. 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 Volaris is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/156:00 am -
1 stop15h 13m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 11/7![Volaris logo]()
$305
This Kiwi.com deal was found by Cheapflights users on 11/7. 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.
Tue 12/156:20 pm -
2 stops29h 25m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 11/7![Multiple Airlines logo]()
$337
This Kiwi.com deal was found by Cheapflights users on 11/5. 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.
Fri 12/186:21 pm -
2 stops29h 24m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 11/5![Multiple Airlines logo]()
$360
This Aeromexico deal was found by Cheapflights users on 11/5. 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 Aeromexico is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 3/286:00 am -
2 stops18h 50m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 11/5![Aeromexico logo]()
$392
This Kiwi.com deal was found by Cheapflights users on 11/5. 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 3/286:00 am -
1 stop27h 34m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 11/5![Multiple Airlines logo]()
$417
This Kiwi.com deal was found by Cheapflights users on 11/9. 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.
Tue 11/176:20 am -
1 stop30h 44m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 11/9![Multiple Airlines logo]()
$424
This Kiwi.com deal was found by Cheapflights users on 11/5. 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.
Thu 12/175:45 pm -
2 stops27h 35m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 11/5![Multiple Airlines logo]()
$452
Find flight deals from St. Louis to Monterrey
Discover tips and strategies to find the most affordable flight options for your journey from St. Louis (STL) to Monterrey (MTY). 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 November 10, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $607 (Volaris) |
One-way from | $163 (Frontier) |
Cheapflights Fare Finder
Customize your flight search to find flights from St. Louis to Monterrey 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 7,457,451 searches. Data last updated November 10, 2026.
Use the filters below to find and compare flights from St. Louis to Monterrey that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
Quickest round-trip
St. LouisMonterrey
STL Lambert-St Louis - MTY Monterrey Gen Mariano Escobedo
STLMTY
Lambert-St Louis
Sat 12/12
6:00 am-4:13 pm
1 stop10h 13m
Monterrey Gen Mariano Escobedo
Wed 12/31
12:00 am-12:00 am
Nonstop0h 00m
$163
St. LouisMonterrey
STL Lambert-St Louis - MTY Monterrey Gen Mariano Escobedo
STLMTY
Lambert-St Louis
Sat 12/12
7:54 pm-11:45 pm
2 stops27h 51m
Monterrey Gen Mariano Escobedo
Wed 12/31
12:00 am-12:00 am
Nonstop0h 00m
$234
St. LouisMonterrey
STL Lambert-St Louis - MTY Monterrey Gen Mariano Escobedo
STLMTY
Lambert-St Louis
Tue 12/15
6:00 am-9:13 pm
1 stop15h 13m
Monterrey Gen Mariano Escobedo
Wed 12/31
12:00 am-12:00 am
Nonstop0h 00m
$305
St. LouisMonterrey
STL Lambert-St Louis - MTY Monterrey Gen Mariano Escobedo
STLMTY
Lambert-St Louis
Tue 12/15
6:20 pm-11:45 pm
2 stops29h 25m
Monterrey Gen Mariano Escobedo
Wed 12/31
12:00 am-12:00 am
Nonstop0h 00m
$337
St. LouisMonterrey
STL Lambert-St Louis - MTY Monterrey Gen Mariano Escobedo
STLMTY
Lambert-St Louis
Tue 11/17
6:20 am-1:04 pm
1 stop30h 44m
Monterrey Gen Mariano Escobedo
Wed 12/31
12:00 am-12:00 am
Nonstop0h 00m
$424
St. LouisMonterrey
STL Lambert-St Louis - MTY Monterrey Gen Mariano Escobedo
STLMTY
Lambert-St Louis
Thu 12/17
5:45 pm-9:20 pm
2 stops27h 35m
Monterrey Gen Mariano Escobedo
Wed 12/31
12:00 am-12:00 am
Nonstop0h 00m
$452
St. LouisMonterrey
STL Lambert-St Louis - MTY Monterrey Gen Mariano Escobedo
STLMTY
Lambert-St Louis
Fri 12/18
4:21 pm-8:00 pm
3 stops27h 39m
Monterrey Gen Mariano Escobedo
Wed 12/31
12:00 am-12:00 am
Nonstop0h 00m
$524
St. LouisMonterrey
STL Lambert-St Louis - MTY Monterrey Gen Mariano Escobedo
STLMTY
Lambert-St Louis
Tue 12/15
6:00 am-4:13 pm
1 stop10h 13m
Monterrey Gen Mariano Escobedo
Tue 12/22
8:10 am-4:40 pm
1 stop8h 30m
$607
St. LouisMonterrey
STL Lambert-St Louis - MTY Monterrey Gen Mariano Escobedo
STLMTY
Lambert-St Louis
Wed 12/16
6:00 am-8:23 am
1 stop26h 23m
Monterrey Gen Mariano Escobedo
Wed 12/23
7:30 pm-10:53 am
2 stops39h 23m
$643
St. LouisMonterrey
STL Lambert-St Louis - MTY Monterrey Gen Mariano Escobedo
STLMTY
Lambert-St Louis
Tue 12/15
6:00 am-1:55 pm
1 stop7h 55m
Monterrey Gen Mariano Escobedo
Tue 12/22
6:55 am-12:41 am
2 stops41h 46m
$661
Showing 1-10 of 15 resultsSorted by cheapest first
Compare providers for flights from St. Louis to Monterrey
Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from St. Louis to Monterrey in November.
| Provider | Price Accuracy | Trust Score* |
|---|---|---|
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy2 stars | Trust Score*3 stars |
- Most accurate provider: When it comes to deals on St. Louis-Monterrey flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on St. Louis-Monterrey flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from St. Louis-Monterrey flight searches over the past month and is updated monthly.
- Most trusted provider: When it comes to deals on St. Louis-Monterrey flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for St. Louis-Monterrey flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.
Best time to book a flight from St. Louis to Monterrey
Have a flexible travel schedule? Discover the best time to fly to Monterrey from St. Louis with our price prediction graph.
STL-MTY
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.
Reviews of airlines servicing Monterrey
Get insights into the airlines that provide service to Monterrey. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Monterrey. Reviews last updated November 10, 2026.
Get a feel of what it's like to fly with American Airlines from St. Louis to Monterrey by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Entertainment
6.8
Food
6.4
Comfort
7.2
Boarding
7.4
Overall
7.0
Crew
7.9
Reviews
1 / 20
10.0
ExcellentLinda,Jul 2026
ROA - CLT
Entertainment
6.8
Food
6.4
Comfort
7.2
Boarding
7.4
Overall
7.0
Crew
7.9
Reviews
1 / 20
10.0
ExcellentLinda,Jul 2026
ROA - CLT
Related info for your journey
Find useful and relevant information for your journey from St. Louis to Monterrey. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
Traveling to a place near Monterrey?
Book flights to Monterrey if you plan to visit one of these locationsSan Pedro Garza Garcia
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Other flights to Monterrey
Explore flights to Monterrey departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on November 10, 2026.
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Top airline flying from St. Louis to Monterrey
Discover the top airline that operate flights from St. Louis to Monterrey. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 7,457,451 searches. Data last updated November 10, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$398 | Average$791 | FlexibilityNo cancel fee | On-time71% |