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Cheap flights from St. Louis to Ottawa
Round-trip
Economy
Flight information for St. Louis to Ottawa
(STL to YOW)
Find info about flight duration, direct flights, and airports for your flight from St. Louis to Ottawa
| Best Price Found | $339 | The best flight deal from St. Louis to Ottawa found on momondo in the last 72 hours is $339 |
| Fastest flight time | 6h 12m | The fastest flight from St. Louis to Ottawa takes 6h 12m. |
| Direct flights | None | There are no direct flights from St. Louis to Ottawa. Popular non-direct route for this connection is Lambert-St Louis - Ottawa. |
| Airports in Ottawa | 1 airport | There is 1 airport near Ottawa: Ottawa (YOW) |
How to get the cheapest flight ticket from St. Louis to Ottawa
Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip
What is the cheapest month to fly from St. Louis to Ottawa?
April
The cheapest time of year to fly to Ottawa from St. Louis is April. Most expensive is October
What is the cheapest day to depart St. Louis for Ottawa?
Thursday
The cheapest day of the week is typically Thursday. The most expensive is typically Sunday
When is the cheapest time to fly from St. Louis to Ottawa?
in the evening
St. Louis to Ottawa flights are approximately 41% more expensive at noon than in the evening
What is the cheapest airline that flies to Ottawa from St. Louis?
WestJet
WestJet, Delta, and American Airlines are the most popular carriers operating from St. Louis to Ottawa
What is the cheapest St. Louis to Ottawa flight route?
Lambert-St Louis - Ottawa
Fly from Lambert-St Louis to Ottawa for the best St. Louis - Ottawa flight prices
STL
Lambert-St Louis
YOW
Ottawa
Easily compare round-trip flights from St. Louis to Ottawa
Below you can see the best fares for your round-trip flight route over the next three months. All fares were found on momondo this week. Browse the quickest and cheapest flights from St. Louis to Ottawa by changing tabs
Air Canada![Air Canada]()
Aug 17![Air Canada]()
Aug 19
11:15 amLambert-St Louis
4h 46m
1 stop
4:01 pmOttawa
2:00 amOttawa
4h 42m
1 stop
6:42 amLambert-St Louis
Air Canada![Air Canada]()
May 9![Air Canada]()
May 11
12:35 pmLambert-St Louis
4h 56m
1 stop
5:31 pmOttawa
2:00 amOttawa
4h 42m
1 stop
6:42 amLambert-St Louis
Best airlines flying from St. Louis to Ottawa
Compare and see reviews for airlines that fly from St. Louis to Ottawa with momondo
AirlineFree CancellationPrice
PriceFrom $112
Free Cancellation
PriceFrom $125
Free Cancellation
Reviews
Pros: Entertainment
Cons: The seat space/leg room is tiny. I found it impossible to fall asleep, being in the middle of a row of three with two "big" people in either side.
1 / 8
PriceFrom $127
Free Cancellation
Reviews
Pros: I appreciate the choice of snacks.
Cons: The coffee served on the flight was lukewarm.
1 / 9
PriceFrom $149
Free Cancellation
Reviews
Pros: It was meh....
Cons: I got no notification that the flight was going to be 1 hour earlier
1 / 6
PriceFrom $150
Free Cancellation
Reviews
Pros: The flight attendants were fabulous on this flight.
Cons: Older plane that showed lots of grime from past travelers. The seats in my row had old spills that seemed to have run down the backs of the seats and dried over. Gross!
1 / 1
Which airlines flying from Lambert-St Louis to Ottawa have COVID-19 safety policies in place?
Airlines such as Delta have taken additional precautions to make sure you’re safer while traveling. Usage of HEPA filters, scheduled sanitation, enhanced cleaning of aircrafts, pre-flight testing, and mask policies are some of the implemented practices made by airlines to help keep you safe as you depart from Lambert-St Louis to Ottawa. Keep in mind that policies will vary by airline.
Are airlines flying from Lambert-St Louis to Ottawa offering flexible cancellation due to COVID-19?
To ease the stress of booking flights, some of our airline partners flying from Lambert-St Louis to Ottawa are responding to the global pandemic. The following airlines may have a flexible cancellation policy to help accommodate travelers: Delta, United Airlines, and Air Canada.