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Cheap Flights from St. Louis to Ottawa $287.24

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Cheapest Flights from St. Louis to Ottawa (STL to YOW)

Prices found within past 7 days. Prices and availability subject to change. Additional terms may apply.

Interesting Facts About Flights from St. Louis to Ottawa (STL to YOW)

Question : Do travelers from Saint Louis typically stay in Ottawa for very long?
Answer : The average time spent in Ottawa by passengers flying from STL is 11 days.

Question : If your plans are flexible, have you considered changing your departure day?
Answer : For the month of December, the cheapest day to fly is Saturday. Flexibility is paramount when booking travel plans in order to keep costs down.

Question : Which airline is giving the best deals for round-trip flights from Lambert-St. Louis International Airport (STL) to Ottawa/Macdonald-Cartier International Airport (YOW)?
Answer : United Airlines is booking the cheapest flights for its customers over the next three months.