Cheap flights from St. Louis (STL) to Ottawa (YOW)

STL — YOW
Oct 8 — Oct 151

What is the cheapest day to fly round-trip from St. Louis to Ottawa?

Saturday is generally a great day to depart. Flying on this day could help you save up to 160%.

What is the cheapest month to fly from St. Louis to Ottawa?

Due to multiple factors, expect to potentially pay more when booking in November. For low rates, January can be a great choice for travel to Ottawa. Flights to Ottawa from St. Louis in January are about $648 on average during January, but can be found for as low as $462.

When is the cheapest time to fly from St. Louis to Ottawa (STL - YOW)?

It’s typically best to fly out from St. Louis to Ottawa in the morning. Doing so could potentially save you 38% on the flight price compared to flying at noon, which is usually more expensive.

Cheap flights from St. Louis to Ottawa in October, November 2022

The best prices found for STL to YOW flights for October, November
Oct 28 - Oct 31
STL

Lambert-St Louis

YOW

Ottawa

1 stop

5h 07m
YOW

Ottawa

STL

Lambert-St Louis

2 stops

10h 32m
$554

Air Canada

Pick Dates

Deal found 1/10/22

Oct 28 - Oct 31
STL

Lambert-St Louis

YOW

Ottawa

2 stops

15h 04m
YOW

Ottawa

STL

Lambert-St Louis

2 stops

10h 32m
$558

Air Canada

Pick Dates

Deal found 1/10/22

Nov 20 - Nov 30
STL

Lambert-St Louis

YOW

Ottawa

2 stops

8h 50m
YOW

Ottawa

STL

Lambert-St Louis

1 stop

6h 47m
$584

Air Canada

Pick Dates

Deal found 1/10/22

St. Louis to Ottawa 2022 flight deals

Cheap flights to Ottawa from St. Louis found for this year
Oct 28 - Oct 31
STL

Lambert-St Louis

YOW

Ottawa

1 stop

5h 07m
YOW

Ottawa

STL

Lambert-St Louis

2 stops

10h 32m
$554

Air Canada

Pick Dates

Deal found 1/10/22

Oct 28 - Oct 31
STL

Lambert-St Louis

YOW

Ottawa

2 stops

15h 04m
YOW

Ottawa

STL

Lambert-St Louis

2 stops

10h 32m
$558

Air Canada

Pick Dates

Deal found 1/10/22

Nov 20 - Nov 30
STL

Lambert-St Louis

YOW

Ottawa

2 stops

8h 50m
YOW

Ottawa

STL

Lambert-St Louis

1 stop

6h 47m
$584

Air Canada

Pick Dates

Deal found 1/10/22

Cheap Air Canada flights from St. Louis to Ottawa

Oct 28 - Oct 31
STL

Lambert-St Louis

YOW

Ottawa

1 stop

5h 07m
YOW

Ottawa

STL

Lambert-St Louis

2 stops

10h 32m
$554

Air Canada

Pick Dates

Deal found 1/10/22

Oct 28 - Oct 31
STL

Lambert-St Louis

YOW

Ottawa

2 stops

15h 04m
YOW

Ottawa

STL

Lambert-St Louis

2 stops

10h 32m
$558

Air Canada

Pick Dates

Deal found 1/10/22

Nov 20 - Nov 30
STL

Lambert-St Louis

YOW

Ottawa

2 stops

8h 50m
YOW

Ottawa

STL

Lambert-St Louis

1 stop

6h 47m
$584

Air Canada

Pick Dates

Deal found 1/10/22

Last minute flights from St. Louis to Ottawa

Late deals on return flights to Ottawa from St. Louis, departing today and this week
Oct 8 - Oct 31
STL

Lambert-St Louis

YOW

Ottawa

1 stop

6h 12m
YOW

Ottawa

STL

Lambert-St Louis

2 stops

10h 32m
$641

Air Canada

Pick Dates

Deal found 1/10/22

Oct 8 - Oct 31
STL

Lambert-St Louis

YOW

Ottawa

2 stops

13h 00m
YOW

Ottawa

STL

Lambert-St Louis

2 stops

10h 32m
$646

Air Canada

Pick Dates

Deal found 1/10/22

Oct 8 - Oct 31
STL

Lambert-St Louis

YOW

Ottawa

2 stops

9h 06m
YOW

Ottawa

STL

Lambert-St Louis

2 stops

10h 32m
$650

Multiple Airlines

Pick Dates

Deal found 1/10/22

Related info for your journey

Useful info, stats and facts about St. Louis to Ottawa flights.

Which airlines flying from Lambert-St Louis to Ottawa have flexible cancellations due to COVID-19?

Due to the rapidly changing circumstances due to COVID-19, airlines like Air Canada, American Airlines, and WestJet flying from Lambert-St Louis to Ottawa have implemented new flexible cancellation policies.

Can I find flights from St. Louis to Ottawa for under $600 on Cheapflights?

Yes, there are multiple flights from St. Louis to Ottawa for under $600. The cheapest flight booked recently is on Air Canada for just $554, but on average you can expect to pay $662.

Are there last-minute flights available from St. Louis to Ottawa for under $700?

There are currently 9+ open flights from St. Louis to Ottawa within the next 7 days for less than $700.

What are the cheapest airlines flying from St. Louis to Ottawa round-trip?

Currently priced at $554, Air Canada will fly you from St. Louis to Ottawa and back. In addition to Air Canada, many other airlines offer competitively priced options for your trip. Check Cheapflights for deals on Delta for as low as $800. Air Canada is 14% cheaper than the average price of flights available within the next 90 days to this destination.

What are the most popular airlines that fly from St. Louis to Ottawa?

American Airlines, Air Canada and Delta are the most popular airlines when flying from St. Louis to Ottawa.

What are the cheapest flights from St. Louis to Ottawa?

The cheapest flight price from St. Louis to Ottawa is $373. On average you can expect to pay $855. The most popular route, (Lambert-St Louis - Ottawa), can usually be booked for $557.

Alternative routes for St. Louis to Ottawa

See prices for flight routes from nearby airports that may be better suited for you.

Top 3 airlines flying from St. Louis to Ottawa

The chart below displays the airlines Cheapflights users traveling from St. Louis to Ottawa choose most often. Cheapest and average prices are based on aggregated data from the past 12 months.
AirlineCheapestAverageFlexibilityOn-timeCOVID-19 safety
WestJetCheapest$112Average$287FlexibilityNo cancel feeOn-time60%COVID-19 safety
Search WestJet flights
American AirlinesCheapest$125Average$366FlexibilityNo cancel feeOn-time71%COVID-19 safety
Search American Airlines flights
Air CanadaCheapest$223Average$567FlexibilityNo cancel feeOn-time67%COVID-19 safety
Search Air Canada flights