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Cheap flights from St. Louis to Ottawa from $292

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from St. Louis to Ottawa departing on 4/12. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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Cheap St. Louis to Ottawa (STL to YOW) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from St. Louis to Ottawa

Best Price Found

$292

Fastest flight time

7h 12m

Direct flights

None

Airports in Ottawa

1 airport
The best one-way flight to Ottawa from St. Louis in the past 72 hours is $292. The best round-trip flight deal from St. Louis to Ottawa found on momondo in the last 72 hours is $824.
The fastest flight from St. Louis to Ottawa takes 7h 12m
There are no direct flights from St. Louis to Ottawa. Popular non-direct route for this connection is Lambert-St Louis Airport - Ottawa 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?

October. The cheapest time of year to fly to Ottawa from St. Louis is October. Most expensive is November

What is the cheapest day to depart St. Louis for Ottawa?

Saturday. The cheapest day of the week is typically Saturday. The most expensive is typically Tuesday

When is the cheapest time to fly from St. Louis to Ottawa?

In the afternoon. St. Louis to Ottawa flights are approximately 6% more expensive in the morning than in the afternoon

What is the cheapest airline that flies to Ottawa from St. Louis?

Air Canada. Air Canada and United 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

How far in advance should you book St. Louis to Ottawa flights?

35 days before. The cheapest time to buy a flight from St. Louis to Ottawa is approximately 35 days to departure

When traveling from St. Louis to Ottawa, the most popular airport to fly into is Ottawa Airport. The majority of travelers flying into Ottawa Airport from St. Louis are departing from Lambert-St Louis Airport. You may be looking for an airport near Lambert-St Louis Airport to depart from when traveling to Ottawa and Springfield Capital Airport, located in Springfield is a great option. You may be looking for an airport near Ottawa Airport to land at when traveling from St. Louis and Montreal Pierre Elliott Trudeau Intl Airport, located in Montreal is a great option. The least expensive flight option from St. Louis to Ottawa will typically be STL — YUL during the month of March with an average price of $451 RT.

Lambert-St Louis Airport (STL) to Montreal Pierre Elliott Trudeau Intl Airport (YUL)$451
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Lambert-St Louis Airport (STL) to Ottawa Airport (YOW)$534
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Springfield Capital Airport (SPI) to Ottawa Airport (YOW)$489
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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 six 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
Apr 24
STL8:05 amLambert-St Louis
8h 01m
1 stop
YOW5:06 pmOttawa
Apr 28
YOW11:00 amOttawa
6h 01m
1 stop
STL4:01 pmLambert-St Louis
Air Canada
Apr 24
STL6:00 amLambert-St Louis
7h 12m
2 stops
YOW2:12 pmOttawa
Apr 28
YOW11:00 amOttawa
6h 01m
1 stop
STL4:01 pmLambert-St Louis

Find the cheapest one-way flights from St. Louis to Ottawa

Multiple Airlines
Apr 12
STL5:35 pmLambert-St Louis
23h 42m
2 stops
YOW6:17 pmOttawa
Multiple Airlines
Apr 12
STL7:16 pmLambert-St Louis
22h 01m
1 stop
YOW6:17 pmOttawa
Multiple Airlines
Apr 12
STL7:16 pmLambert-St Louis
17h 38m
3 stops
YOW1:54 pmOttawa

Best airlines flying from St. Louis to Ottawa

Compare and see reviews for airlines that fly from St. Louis to Ottawa with momondo
Airline
Rating
Free Cancellation
Price
Air CanadaPriceFrom $270Free CancellationRating
7.0
6,744 reviews
Search Air Canada flights
United AirlinesPriceFrom $281Free CancellationRating
7.4
11,470 reviews
Search United Airlines flights

Air Canada flights from St. Louis to Ottawa

Our best Air Canada deals on St. Louis to Ottawa flight tickets
Air Canada
Apr 24
STL8:05 amLambert-St Louis
8h 01m
1 stop
YOW5:06 pmOttawa
Apr 28
YOW11:00 amOttawa
6h 01m
1 stop
STL4:01 pmLambert-St Louis
Air Canada
Apr 24
STL6:00 amLambert-St Louis
7h 12m
2 stops
YOW2:12 pmOttawa
Apr 28
YOW11:00 amOttawa
6h 01m
1 stop
STL4:01 pmLambert-St Louis

  • How far is Lambert-St Louis to Ottawa by plane?

    There are 877.2 mi between Lambert-St Louis and Ottawa. By plane, this route typically takes 7h 12m.

  • When did momondo last update prices for flights from Lambert-St Louis Airport to Ottawa Airport?

    Prices for flights from Lambert-St Louis Airport to Ottawa Airport are updated daily.

  • How many operators does momondo search for flights from Lambert-St Louis Airport to Ottawa Airport?

  • How old do you have to be to fly from Lambert-St Louis Airport to Ottawa Airport?

    The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Lambert-St Louis Airport to Ottawa Airport.

  • What documentation or ID do you need to fly to Ottawa Airport?

    The required travel and health documents for your Ottawa Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Ottawa Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.


Alternative routes for St. Louis to Ottawa

Compare alternative flights to and from nearby airports and cities to discover the best prices and most convenient flight times
St. Louis to Toronto Flights
Fastest flight time1h 54m
Cheapest price$351
Kansas City to Toronto Flights
Fastest flight time2h 24m
Cheapest price$414
Kansas City to Ottawa Flights
Fastest flight time9h 35m
Cheapest price$507
Joplin to Toronto Flights
Fastest flight time14h 46m
Cheapest price$668
Columbia, Missouri to Toronto Flights
Fastest flight time3h 47m
Cheapest price$919

Similar St. Louis to Ottawa flights

Flexible with your destination? Broaden your search and find flights similar to your St. Louis to Ottawa route

Why use momondo?

Why should I use momondo to find a flight deal from St. Louis to Ottawa?

momondo compares prices from hundreds of airlines and agents so you can find and book the best deal on flights from St. Louis to Ottawa. Millions of users trust and use momondo every year so you are in good hands.

Can I find flights from St. Louis to Ottawa with flexible booking policies on momondo?

Yes. momondo enables you to select and highlight flights to Ottawa from St. Louis with this policy.

How can momondo help me find flights from St. Louis to Ottawa?

momondo provides multiple filters to help you find the best flight to Ottawa from St. Louis. Filter by price, airline, airports, cabin, aircraft, payment method, number of stops and more.

I’m not ready to book a flight from St. Louis to Ottawa right now. Can momondo alert me if prices change?

Yes momondo offers price alerts on flights to Ottawa from St. Louis. After performing a search on this page you should be able to see the price alert set up feature. Simply provide a valid email address and momondo will instantly alert you when prices change.


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