Cheap flights from St. Louis to Ottawa

If you’re looking for cheap flights from St. Louis to Ottawa, WestJet has exactly what you want. We have flights that take off and land all across North America, Central America, the Caribbean and Europe, including Ottawa Macdonald-Cartier International Airport, which is the reason you can always turn to us to get to where you need to be. Our long-term commitment to great guest experiences and safe, affordable travel means our passengers pay less and get more. So if we encompass the things you value most in flying then book with us today.

Low fare finder

Don't see what you're looking for? Find all of our great low fares in one place.

Plan your visit to Bytown with WestJet

Airport Details: From STL, Lambert - St. Louis International Airport To YOW, Ottawa Macdonald-Cartier International Airport

In addition to its status as a political and technological hub, Ottawa is an outstanding destination. Ottawa is home to great historical sites, beautiful galleries and architecture, which is why WestJet touches down in the bustling airport to get you as close to the action as possible. Gaze at the riverside city's amazing architecture, spend a lazy afternoon in a tranquil art gallery or experience the high-octane excitement of an NHL game.

Find cheap flights now and you'll soon be on your way to one of Ontario's most multicultural and enjoyable destinations. Get the best out of the Canadian Museum of Civilization, Winterlude, the Rideau Canal and more once you've flown from St. Louis to Ottawa with WestJet.

For an enriching air travel experience, book with WestJet today.