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Cheap flights from Washington, D.C. to Ottawa from C$ 199

1 adult
1 adult, Economy, 0 bags

Find the cheapest flights from Washington, D.C. to Ottawa

Cheap round-trip flights

Enter your travel dates to find the best prices.
Porter Airlines Logo
3:50 p.m. - 9:42 p.m.IAD  Washington, D.C. Dulles Intl-YOW Ottawa
5h 52m1 stop Toronto Island
Porter Airlines Logo
10:40 a.m. - 3:10 p.m.YOW  Ottawa-IAD Washington, D.C. Dulles Intl
4h 30m1 stop Toronto Island
C$ 431Porter Airlines
Fri, 16 Oct - Sun, 18 Oct
Porter Airlines Logo
3:50 p.m. - 9:42 p.m.IAD  Washington, D.C. Dulles Intl-YOW Ottawa
5h 52m1 stop Toronto Island
Porter Airlines Logo
10:40 a.m. - 3:10 p.m.YOW  Ottawa-IAD Washington, D.C. Dulles Intl
4h 30m1 stop Toronto Island
C$ 435Porter Airlines
Thu, 15 Oct - Fri, 16 Oct
Porter Airlines Logo
3:50 p.m. - 8:02 p.m.IAD  Washington, D.C. Dulles Intl-YOW Ottawa
4h 12m1 stop Toronto Island
Porter Airlines Logo
10:40 a.m. - 3:10 p.m.YOW  Ottawa-IAD Washington, D.C. Dulles Intl
4h 30m1 stop Toronto Island
C$ 438Porter Airlines
Fri, 25 Sep - Fri, 2 Oct
Porter Airlines Logo
11:25 a.m. - 5:52 p.m.IAD  Washington, D.C. Dulles Intl-YOW Ottawa
6h 27m1 stop Toronto Island
Porter Airlines Logo
10:40 a.m. - 3:10 p.m.YOW  Ottawa-IAD Washington, D.C. Dulles Intl
4h 30m1 stop Toronto Island
C$ 439Porter Airlines
Thu, 1 Oct - Sun, 4 Oct
Porter Airlines Logo
3:50 p.m. - 9:42 p.m.IAD  Washington, D.C. Dulles Intl-YOW Ottawa
5h 52m1 stop Toronto Island
Porter Airlines Logo
10:40 a.m. - 3:10 p.m.YOW  Ottawa-IAD Washington, D.C. Dulles Intl
4h 30m1 stop Toronto Island
C$ 444Porter Airlines
Fri, 16 Oct - Mon, 19 Oct
Porter Airlines Logo
3:50 p.m. - 9:42 p.m.IAD  Washington, D.C. Dulles Intl-YOW Ottawa
5h 52m1 stop Toronto Island
Porter Airlines Logo
10:40 a.m. - 3:10 p.m.YOW  Ottawa-IAD Washington, D.C. Dulles Intl
4h 30m1 stop Toronto Island
C$ 449Porter Airlines
Fri, 16 Oct - Mon, 19 Oct
Porter Airlines Logo
3:50 p.m. - 9:42 p.m.IAD  Washington, D.C. Dulles Intl-YOW Ottawa
5h 52m1 stop Toronto Island
Porter Airlines Logo
10:40 a.m. - 3:10 p.m.YOW  Ottawa-IAD Washington, D.C. Dulles Intl
4h 30m1 stop Toronto Island
C$ 450Porter Airlines
Thu, 8 Oct - Sun, 11 Oct
Porter Airlines Logo
3:50 p.m. - 8:02 p.m.IAD  Washington, D.C. Dulles Intl-YOW Ottawa
4h 12m1 stop Toronto Island
Porter Airlines Logo
10:40 a.m. - 3:10 p.m.YOW  Ottawa-IAD Washington, D.C. Dulles Intl
4h 30m1 stop Toronto Island
C$ 454Porter Airlines
Fri, 25 Sep - Sun, 27 Sep
Porter Airlines Logo
3:50 p.m. - 9:42 p.m.IAD  Washington, D.C. Dulles Intl-YOW Ottawa
5h 52m1 stop Toronto Island
Porter Airlines Logo
10:40 a.m. - 3:10 p.m.YOW  Ottawa-IAD Washington, D.C. Dulles Intl
4h 30m1 stop Toronto Island
C$ 457Porter Airlines
Fri, 2 Oct - Sun, 4 Oct
Porter Airlines Logo
11:25 a.m. - 7:07 p.m.IAD  Washington, D.C. Dulles Intl-YOW Ottawa
7h 42m1 stop Toronto Island
Porter Airlines Logo
10:40 a.m. - 3:10 p.m.YOW  Ottawa-IAD Washington, D.C. Dulles Intl
4h 30m1 stop Toronto Island
C$ 464Porter Airlines
Sat, 3 Oct - Mon, 12 Oct

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Porter Airlines flights from Washington, D.C. to Ottawa

Our best Porter Airlines deals on Washington, D.C. to Ottawa flight tickets
Porter Airlines
16 Oct
IAD3:50 p.m.Washington, D.C. Dulles Intl
5h 52m
1 stop
YOW9:42 p.m.Ottawa
18 Oct
YOW10:40 a.m.Ottawa
4h 30m
1 stop
IAD3:10 p.m.Washington, D.C. Dulles Intl
C$ 431
Porter Airlines
15 Oct
IAD3:50 p.m.Washington, D.C. Dulles Intl
5h 52m
1 stop
YOW9:42 p.m.Ottawa
16 Oct
YOW10:40 a.m.Ottawa
4h 30m
1 stop
IAD3:10 p.m.Washington, D.C. Dulles Intl
C$ 435
Porter Airlines
25 Sep
IAD3:50 p.m.Washington, D.C. Dulles Intl
4h 12m
1 stop
YOW8:02 p.m.Ottawa
2 Oct
YOW10:40 a.m.Ottawa
4h 30m
1 stop
IAD3:10 p.m.Washington, D.C. Dulles Intl
C$ 438

United Airlines flights from Washington, D.C. to Ottawa

Our best United Airlines deals on Washington, D.C. to Ottawa flight tickets
United Airlines
22 Sep
IAD8:35 a.m.Washington, D.C. Dulles Intl
8h 03m
1 stop
YOW4:38 p.m.Ottawa
22 Sep
YOW7:30 p.m.Ottawa
1h 44m
IAD9:14 p.m.Washington, D.C. Dulles Intl
C$ 547
United Airlines
25 Sep
IAD12:35 p.m.Washington, D.C. Dulles Intl
1h 42m
YOW2:17 p.m.Ottawa
25 Sep
YOW6:01 p.m.Ottawa
4h 58m
1 stop
IAD10:59 p.m.Washington, D.C. Dulles Intl
C$ 555
United Airlines
17 Oct
IAD6:45 a.m.Washington, D.C. Dulles Intl
9h 53m
1 stop
YOW4:38 p.m.Ottawa
17 Oct
YOW7:30 p.m.Ottawa
1h 44m
IAD9:14 p.m.Washington, D.C. Dulles Intl
C$ 564

momondo Fare Finder

 
Use the filters below to find and compare flights from Washington, D.C. to Ottawa that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

Washington, D.C.Ottawa

IAD Washington, D.C. Dulles Intl - YOW Ottawa

IADYOW

Washington, D.C. Dulles Intl

Fri 16/10

3:50 p.m.-9:42 p.m.

1 stop5h 52m

Ottawa

Sun 18/10

10:40 a.m.-3:10 p.m.

1 stop4h 30m

C$ 431

Washington, D.C.Ottawa

IAD Washington, D.C. Dulles Intl - YOW Ottawa

IADYOW

Washington, D.C. Dulles Intl

Thu 15/10

3:50 p.m.-9:42 p.m.

1 stop5h 52m

Ottawa

Fri 16/10

10:40 a.m.-3:10 p.m.

1 stop4h 30m

C$ 435
Quickest round-trip

Washington, D.C.Ottawa

IAD Washington, D.C. Dulles Intl - YOW Ottawa

IADYOW

Washington, D.C. Dulles Intl

Fri 25/9

3:50 p.m.-8:02 p.m.

1 stop4h 12m

Ottawa

Fri 2/10

10:40 a.m.-3:10 p.m.

1 stop4h 30m

C$ 438

Washington, D.C.Ottawa

IAD Washington, D.C. Dulles Intl - YOW Ottawa

IADYOW

Washington, D.C. Dulles Intl

Thu 1/10

11:25 a.m.-5:52 p.m.

1 stop6h 27m

Ottawa

Sun 4/10

10:40 a.m.-3:10 p.m.

1 stop4h 30m

C$ 439

Washington, D.C.Ottawa

IAD Washington, D.C. Dulles Intl - YOW Ottawa

IADYOW

Washington, D.C. Dulles Intl

Fri 16/10

3:50 p.m.-9:42 p.m.

1 stop5h 52m

Ottawa

Mon 19/10

10:40 a.m.-3:10 p.m.

1 stop4h 30m

C$ 444

Washington, D.C.Ottawa

IAD Washington, D.C. Dulles Intl - YOW Ottawa

IADYOW

Washington, D.C. Dulles Intl

Fri 16/10

3:50 p.m.-9:42 p.m.

1 stop5h 52m

Ottawa

Mon 19/10

10:40 a.m.-3:10 p.m.

1 stop4h 30m

C$ 449

Washington, D.C.Ottawa

IAD Washington, D.C. Dulles Intl - YOW Ottawa

IADYOW

Washington, D.C. Dulles Intl

Thu 8/10

3:50 p.m.-9:42 p.m.

1 stop5h 52m

Ottawa

Sun 11/10

10:40 a.m.-3:10 p.m.

1 stop4h 30m

C$ 450

Washington, D.C.Ottawa

IAD Washington, D.C. Dulles Intl - YOW Ottawa

IADYOW

Washington, D.C. Dulles Intl

Fri 25/9

3:50 p.m.-8:02 p.m.

1 stop4h 12m

Ottawa

Sun 27/9

10:40 a.m.-3:10 p.m.

1 stop4h 30m

C$ 454

Washington, D.C.Ottawa

IAD Washington, D.C. Dulles Intl - YOW Ottawa

IADYOW

Washington, D.C. Dulles Intl

Fri 2/10

3:50 p.m.-9:42 p.m.

1 stop5h 52m

Ottawa

Sun 4/10

10:40 a.m.-3:10 p.m.

1 stop4h 30m

C$ 457

Washington, D.C.Ottawa

IAD Washington, D.C. Dulles Intl - YOW Ottawa

IADYOW

Washington, D.C. Dulles Intl

Sat 3/10

11:25 a.m.-7:07 p.m.

1 stop7h 42m

Ottawa

Mon 12/10

10:40 a.m.-3:10 p.m.

1 stop4h 30m

C$ 464

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to Ottawa from

How to get the cheapest flight ticket from Washington, D.C. 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 typical price of a round-trip flight between Washington, D.C. and Ottawa?

Prices are currently low for flights on this route.

Typical prices usually range from C$ 570 to C$ 757.
The lowest price recently found on this route was C$ 431.

What is the cheapest month to fly to Ottawa?

The month of March is, on average, the cheapest month to fly to Ottawa from Washington, D.C., with most prices found around C$ 606. If you aren’t able to travel to Ottawa during the month of March, then flying in October is also cheap. Prices for this month can be found on momondo for an average of C$ 608.

What is the cheapest day to depart on your flight to Ottawa?

Our data shows that Friday is the least expensive day to fly to Ottawa. Tickets to fly out on this day can be as low as C$ 451. Flights from Washington, D.C. to Ottawa on a Tuesday will generally be more expensive and average around C$ 877. Keep in mind that these prices on both days could fluctuate depending on the season and the demand.

What is the cheapest Washington, D.C. to Ottawa flight route?

Fly from Washington, D.C. Reagan-National to Ottawa for the best Washington, D.C. - Ottawa flight prices

What cabin class options are available on Washington, D.C. to Ottawa flights?

There are 2 cabin classes available to choose from on Washington, D.C. to Ottawa flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

Can stopping save me money on Washington, D.C. to Ottawa flights?

You could potentially save up to 7% on your flight if you consider stops on a Washington, D.C. to Ottawa flight.

How have Washington, D.C. to Ottawa flight prices changed over time?

As of August 2026, prices for Washington, D.C. to Ottawa flights are approximately 26% more expensive when compared to flights at the same time last year.

When to book flights from Washington, D.C. to Ottawa

Are you open to changing your travel dates? Check out the ideal times to fly from Washington, D.C. to Ottawa according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap Washington, D.C. to Ottawa (WAS to YOW) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Washington, D.C. to Ottawa

Best price found

C$ 199

Fastest flight time

1h 31m

Direct flights

Every day

Airports in Ottawa

1 airport
The best one-way flight to Ottawa from Washington, D.C. in the past 72 hours is C$ 199. The best round-trip flight deal from Washington, D.C. to Ottawa found on momondo in the last 72 hours is C$ 431.
The fastest flight from Washington, D.C. to Ottawa takes 1h 31m
Direct flights go from Washington, D.C. to Ottawa every day.
There is 1 airport in Ottawa. From Washington, D.C. there are direct flights to Ottawa (YOW).
Search flight deals

Frequently asked questions about flying from Washington, D.C. to Ottawa

  • How far is Washington, D.C. to Ottawa by plane?

    There are 731.6 km between Washington, D.C. and Ottawa. 1h 31m is a normal flight duration for this route.

  • When did momondo last update prices for flights from Washington, D.C. to Ottawa Airport?

    Prices for flights from Washington, D.C. to Ottawa Airport refresh daily.

  • How old do you have to be to fly from Washington, D.C. to Ottawa Airport?

    Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Washington, D.C. to Ottawa Airport.

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

    The travel and health documents required for your trip to Ottawa Airport can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Ottawa Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

  • What is the most popular plane model from Washington, D.C. to Ottawa?

Travelling to a place near Ottawa?

Book flights to Ottawa if you plan to visit one of these locations
Gatineau
Brockville
Pembroke
Perth
Smiths Falls
Prescott
Wakefield
Calabogie
Petawawa

Why use momondo?

Why should I use momondo to find a flight deal from Washington, D.C. to Ottawa?

momondo collates all your flight options in one place and lets you filter them to find the perfect flight from Washington, D.C. to Ottawa. momondo saves you time and could save you money on your trip.

Can I find flights from Washington, D.C. to Ottawa with flexible booking policies on momondo?

momondo does allow users to show only those flights to Ottawa from Washington, D.C. which offer a flexible booking policy as well as other useful filters and features.

How can momondo help me find flights from Washington, D.C. to Ottawa?

momondo helps you find the best flight between Washington, D.C. and Ottawa by providing filters to narrow your choice of flights to those matching your criteria. You can select flights based on numerous factors such as price, departure and landing times, airport and airline.

I’m not ready to book a flight from Washington, D.C. to Ottawa right now. Can momondo alert me if prices change?

Yes momondo offers price alerts on flights to Ottawa from Washington, D.C.. 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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