Cheap flights from Ottawa, Canada to St. Louis, MO

Travelers frequently search for route combinations, such as Ottawa and Calgary, Vancouver, Myrtle Beach, Edmonton, West Palm Beach, Winnipeg, Halifax, Kigali, Douala, Hargeisa, Puerto Plata, New York, Orlando, Las Vegas, Denver, Chicago, Miami, Los Angeles, Atlanta, Mexico City.

Travelers frequently search for route combinations, such as St. Louis and Toronto, Montreal, Vancouver, Calgary, Winnipeg, Edmonton, Kelowna, Quebec City, Victoria, Saskatoon.

The main airport in Ottawa is Ottawa Macdonald–Cartier International. It is also served by Montréal–Pierre Elliott Trudeau International, Syracuse Hancock International, Plattsburgh International, Massena International, Adirondack Regional, Ogdensburg International, Montreal Saint-Hubert Longueuil, Watertown International.

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, Cape Girardeau Regional, Williamson County Regional, Columbia Regional.

Currently, you can fly between Ottawa and St. Louis with Porter Airlines, United Airlines, WestJet, Frontier Airlines, Air Canada.

If you don’t have specific dates for your trip between Ottawa 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 Ottawa 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 Ottawa. The main one is Ottawa Macdonald–Cartier International and other nearby airports include Montréal–Pierre Elliott Trudeau International, Syracuse Hancock International, Plattsburgh International, Massena International, Adirondack Regional, Ogdensburg International, Montreal Saint-Hubert Longueuil, Watertown International

There are a number of airports in and around St. Louis. The main one is St. Louis Lambert International and other nearby airports include 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, Cape Girardeau Regional, Williamson County Regional, Columbia Regional.