Cheap flights from Montreal to St. Louis from CA$261

Travelers frequently search for route combinations, such as Montreal and Vancouver, Toronto, Calgary, Edmonton, Mexico City, Winnipeg, Guatemala City, Fort Lauderdale, Cancún, Kelowna, Medellín, Istanbul, Cartagena, Bogotá, Paris, Guadalajara, San José, Halifax, San Salvador, Atlanta.

Travelers frequently search for route combinations, such as St. Louis and Toronto, Edmonton, Winnipeg, Orlando, San Francisco, Victoria, Quebec City, Ottawa, Bogotá, Saskatoon, Calgary, Kelowna, Detroit, Vancouver, Los Angeles.

Montreal is mainly served by Montréal–Pierre Elliott Trudeau International. But there are other airports nearby, including Montreal Saint-Hubert Longueuil, Montréal–Mirabel International.

The main airport in Montreal is Montréal–Pierre Elliott Trudeau International. It is also served by Ottawa Macdonald–Cartier International, Burlington International, Ogdensburg International, Plattsburgh International, Québec City Jean Lesage International, Massena International, Adirondack Regional, Lebanon Municipal.

The main airport in St. Louis is St. Louis Lambert International. It is also served by St. Louis Lambert International, Abraham Lincoln Capital, General Wayne A. Downing Peoria International, MidAmerica St. Louis, Evansville Regional, Central Illinois Regional, Waynesville-St. Robert Regional, Quincy Regional, Cape Girardeau Regional, Barkley Regional.

Currently, you can fly between Montreal and St. Louis with Frontier Airlines, WestJet, Porter Airlines, United Airlines, Spirit Airlines.

If you don’t have specific dates for your trip between Montreal and St. Louis, you can enter a date range into the departure and return fields. Most carriers on the Kiwi.com website allow you to search and book up to six months from the day of your search. Order the search results by the best, cheapest, or fastest route, or find the cheapest outbound and return combination in the pricing table.

Traveling between Montreal and St. Louis, you can choose between direct (nonstop) flights or flights with one or more stops. You can select the number of stops on your journey, including an overnight stopover, and the duration of the stopover. What’s more, you can also select where you want to have your stopover. Want to say "Hi" to a friend in another city en route to your destination? Or fancy a quick round of shopping? Go Multi-City or Nomad and add places to your search that you wish to visit.

There are a number of airports in and around Montreal. The main one is Montréal–Pierre Elliott Trudeau International and other nearby airports include Ottawa Macdonald–Cartier International, Burlington International, Ogdensburg International, Plattsburgh International, Québec City Jean Lesage International, Massena International, Adirondack Regional, Lebanon Municipal