Cheap Flights from St Louis (STL) to Monterrey (MTY)

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      Travellers and cabin class, 1 Adult, Economy

      Compare St Louis to Monterrey Gen Mariano Escobedo flight deals

      Find the cheapest month or even day of the year to fly to Monterrey Gen Mariano Escobedo

      Book the best Monterrey Gen Mariano Escobedo fare with no extra fees

      Flight deals from St Louis to Monterrey Gen Mariano Escobedo

      Looking for a cheap last-minute deal or the best return flight from St Louis Airport to Monterrey Gen Mariano Escobedo Airport? If you want to travel next month, return fares start from $899. Find the lowest prices on one-way and return tickets right here.

      Find the cheapest month to fly from St Louis to Monterrey Gen Mariano Escobedo

      We’re always keeping an eye on fares, so you can find the best one in seconds. It looks like St Louis to Monterrey Gen Mariano Escobedo flights are currently cheapest in October.

      St Louis to Monterrey Gen Mariano Escobedo: Alternative routes

      Compare routes from St Louis to Monterrey below. You may find an airport to fly into that's cheaper, faster, or easier than Monterrey Gen Mariano Escobedo.

      St Louis to Monterrey: Flight information

      The things to know before you go.
      Cheapest flight found$899
      Cheapest month to flyOctober

      Finding cheap flights from St Louis to Monterrey Gen Mariano Escobedo: Frequently asked questions

      The best price we found for a return flight from St Louis to Monterrey Gen Mariano Escobedo is $899. This is an estimate based on information collected from different airlines and travel providers over the last 4 days and is subject to change and availability.
      Currently, there are no airlines that fly direct from St Louis to Monterrey Gen Mariano Escobedo. But we found flights with one or more stops from $899.
      As of September 2026, there are no flights flying from St Louis to Monterrey Gen Mariano Escobedo.
      The cheapest month to fly from St Louis to Monterrey Gen Mariano Escobedo is usually October.
      After crunching the numbers on our flight calendar, we found that it's currently cheapest to fly from St Louis Airport to Monterrey Gen Mariano Escobedo Airport on Wednesday, 14 October 2026.
      No airlines currently offer direct flights between St Louis Airport and Monterrey Gen Mariano Escobedo Airport. Most routes have one or more stops.
      We show every price from over 1,200 airlines and travel agents, comparing them all so you don’t have to. If you know you want to fly to Monterrey Gen Mariano Escobedo but you’re not ready to book, set up a Price Alert. We’ll track prices for you, and let you know when they rise or fall.

      We crunched all the numbers in our flight calendar and it looks like the cheapest time to book a flight to Monterrey is around 40 days in advance, so don’t leave your flight to the last minute.

      Currently, United offers the cheapest flight tickets to Monterrey Gen Mariano Escobedo.

      Travelling from St Louis Airport (STL) to Monterrey Gen Mariano Escobedo Airport (MTY): what you need to know

      • Monterrey's timezone is UTC-6, which is the same as St Louis.

      • For a smooth journey, arrive at the airport two hours ahead of international flights and an hour before domestic departures. This will give you plenty of time to board your STL to MTY flight.

      • Travelling during a peak month such as July? Major public holidays and other high seasons can result in longer lines and delays at security. Play it safe and arrive up to four hours before an international flight and two hours before a domestic departure.

      • If you'd like to break up your flight, simply uncheck 'Direct flights only' when searching for your ticket from St Louis Airport to Monterrey Gen Mariano Escobedo Airport. Here are the top stopovers between STL and MTY:

        • Dallas Fort Worth International Airport

        • Houston George Bush Intercntl. Airport

        • Austin-Bergstrom Airport

      How to find the cheapest flights from St Louis Airport (STL) to Monterrey Gen Mariano Escobedo Airport (MTY)

      • Right now, $473 is the lowest price we've seen for a one-way St Louis Airport to Monterrey Gen Mariano Escobedo Airport flight. The best price for a return plane ticket is $899. Bear in mind that fares may change due to demand at the time of booking.

      • It's usually best to book ahead of time if you're hoping to get cheap tickets from STL to MTY. That's because flight prices are based on demand, which tends to rise closer to departure.

      • If you're flexible with your travel dates, try using the 'Whole month' search function. It'll find the cheapest price across every month when searching for a flight from St Louis Airport to Monterrey Gen Mariano Escobedo Airport.

      • Save time searching for cheap flights from STL to MTY by creating a Price Alert. You'll receive an email or notification on the app when fares go down.

      • Discover the right flight for you by using the filters. To see the 'Cheapest,' 'Fastest' or 'Best' flights from St Louis Airport to Monterrey Gen Mariano Escobedo Airport, use the 'Sort by' function. You can also filter results by departure and arrival times, airline, and number of stops.

      Handy information about St Louis Airport (STL)

      Arriving at Monterrey Gen Mariano Escobedo Airport (MTY)

      Getting from Monterrey Gen Mariano Escobedo Airport (MTY) to central Monterrey

      • From Monterrey Gen Mariano Escobedo Airport, Monterrey is approximately 26 kilometres away. It takes around 30 minutes to reach the centre driving.

      • Travelling to the centre on public transport will take you around 1 hour.

      When to fly to Monterrey Gen Mariano Escobedo Airport (MTY)

      • July is the most popular month for flights from St Louis Airport to Monterrey Gen Mariano Escobedo Airport. To skip the crowds, travel to Monterrey in March.

      • When booking your flight from St Louis Airport to Monterrey Gen Mariano Escobedo Airport, think about the type of weather you enjoy. August is the warmest month in Monterrey, with temperatures ranging from 22ºC (72ºF) to 37ºC (99ºF).

      • January sees average temperatures of between 6ºC (43ºF) and 23ºC (73ºF). Look for cheap tickets from STL to MTY sometime around then if you like cooler conditions.

      Explore more of Mexico

      • You've seen Monterrey, now it's time to explore more of Mexico. Travel around 402 kilometres south to San Luis Potosi to tick off its leading attractions. From Cascada de Tamul to Cathedral of San Luis Potosi and Puente de Dios, you'll have a packed itinerary ahead.

      • Aguascalientes is another well-known destination in Mexico and is around 467 kilometres south-west of Monterrey. No trip is complete without seeing Van Gogh Expo Aguascalientes (The Immersive Experience), Catedral Basilica de Nuestra Senora de la Asuncion and Mariposario y Orquideario.

      Prices shown on this page are estimated lowest prices only. Found in the last 12 days.