What’s the cost of a flight from Saint Louis to Ottawa?

Prices vary based on date, airline, and availability. Compare several options if you're flying between Saint Louis and Ottawa.

Choose a date to explore the best fares now.

If possible, avoid holiday periods: ticket prices tend to rise quickly and availability drops, especially on busy routes. Morning and evening flights are often in high demand too — book early to get a good fare.

Flying between Saint Louis and Ottawa? Consider these airports

Depending on your destination and where you’re starting from, it might make sense to look beyond the main hubs.

• Airports in Saint Louis: Saint Louis has only one airport in service, Saint Louis - Lambert.
• Airports in Ottawa: The only active option is Ottawa - McDonald Cartier.

Check if your destination airport has a rail link — it can make getting around easier. Jetcost lets you view options from all Saint Louis airports in a single search.

Filter and compare flights from Saint Louis to Ottawa

Jetcost helps you manage complex searches with simple filters. Sort by airline, duration, number of stops, or even time windows for outbound and return flights.

Other popular destinations

Want more ideas for your trip to Canada? Check these: Calgary, Montreal, Quebec, Toronto, Vancouver.

Advanced filters help you skip long layovers or inconvenient times. The “airlines” filter is handy if you want to collect miles or prefer a certain onboard experience.