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Cheap flights from Ottawa to Washington, D.C. from C$ 221

1 adult
1 adult, Economy, 0 bags

Discover deals from 900+ travel sites with momondo.

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

Cheap round-trip flights

Enter your travel dates to find the best prices.
United Airlines Logo
6:00 a.m. - 7:22 a.m.YOW  Ottawa-IAD Washington, D.C. Dulles Intl
25h 22m1 stop Newark
United Airlines Logo
1:19 p.m. - 3:07 p.m.IAD  Washington, D.C. Dulles Intl-YOW Ottawa
1h 48mdirect
C$ 340United Airlines
Wed, 2 Dec - Thu, 3 Dec
Air Canada Logo
9:00 a.m. - 3:24 p.m.YOW  Ottawa-DCA Washington, D.C. Reagan-National
6h 24m1 stop Montreal Pierre Elliott Trudeau Intl
Air Canada Logo
6:00 a.m. - 9:47 a.m.DCA  Washington, D.C. Reagan-National-YOW Ottawa
3h 47m1 stop Montreal Pierre Elliott Trudeau Intl
C$ 426Air Canada
Wed, 11 Nov - Fri, 13 Nov
Air Canada Logo
9:10 a.m. - 3:45 p.m.YOW  Ottawa-IAD Washington, D.C. Dulles Intl
6h 35m1 stop Toronto Pearson Intl
Air Canada Logo
5:20 p.m. - 9:52 p.m.IAD  Washington, D.C. Dulles Intl-YOW Ottawa
4h 32m1 stop Toronto Island
C$ 429Air Canada
Wed, 11 Nov - Fri, 13 Nov
United Airlines Logo
2:00 p.m. - 7:22 a.m.YOW  Ottawa-IAD Washington, D.C. Dulles Intl
17h 22m2 stops Toronto Pearson Intl Newark
United Airlines Logo
1:19 p.m. - 3:07 p.m.IAD  Washington, D.C. Dulles Intl-YOW Ottawa
1h 48mdirect
C$ 429United Airlines
Tue, 1 Dec - Wed, 2 Dec
Air Canada Logo
2:00 p.m. - 8:10 p.m.YOW  Ottawa-IAD Washington, D.C. Dulles Intl
6h 10m1 stop Toronto Pearson Intl
Air Canada Logo
5:20 p.m. - 9:52 p.m.IAD  Washington, D.C. Dulles Intl-YOW Ottawa
4h 32m1 stop Toronto Island
C$ 429Air Canada
Wed, 2 Dec - Thu, 3 Dec
Porter Airlines Logo
12:15 p.m. - 5:44 p.m.YOW  Ottawa-IAD Washington, D.C. Dulles Intl
5h 29m1 stop Toronto Island
Porter Airlines Logo
11:20 a.m. - 4:37 p.m.IAD  Washington, D.C. Dulles Intl-YOW Ottawa
5h 17m1 stop Toronto Island
C$ 433Porter Airlines
Sun, 15 Nov - Sun, 22 Nov
Porter Airlines Logo
12:15 p.m. - 5:44 p.m.YOW  Ottawa-IAD Washington, D.C. Dulles Intl
5h 29m1 stop Toronto Island
Porter Airlines Logo
11:20 a.m. - 4:49 p.m.IAD  Washington, D.C. Dulles Intl-YOW Ottawa
5h 29m1 stop Toronto Island
C$ 433Porter Airlines
Mon, 9 Nov - Mon, 5 Apr
Multiple Airlines Logo
3:15 p.m. - 2:49 p.m.YOW  Ottawa-IAD Washington, D.C. Dulles Intl
23h 34m2 stops Newark Atlanta Hartsfield-Jackson
Multiple Airlines Logo
11:20 a.m. - 4:38 p.m.IAD  Washington, D.C. Dulles Intl-YOW Ottawa
5h 18m1 stop Toronto Island
C$ 443Multiple Airlines
Wed, 2 Dec - Sun, 6 Dec
Multiple Airlines Logo
7:05 a.m. - 10:02 p.m.YOW  Ottawa-IAD Washington, D.C. Dulles Intl
14h 57m1 stop Fort Lauderdale
Multiple Airlines Logo
3:34 p.m. - 10:06 p.m.IAD  Washington, D.C. Dulles Intl-YOW Ottawa
30h 32m2 stops Fort Lauderdale Toronto Pearson Intl
C$ 469Multiple Airlines
Tue, 24 Nov - Tue, 1 Dec
United Airlines Logo
4:42 p.m. - 10:45 p.m.YOW  Ottawa-DCA Washington, D.C. Reagan-National
6h 03m1 stop Chicago O'Hare Intl
United Airlines Logo
6:59 a.m. - 1:10 p.m.DCA  Washington, D.C. Reagan-National-YOW Ottawa
6h 11m1 stop Toronto Pearson Intl
C$ 475United Airlines
Fri, 18 Dec - Sun, 3 Jan

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

Our best United Airlines deals on Ottawa to Washington, D.C. flight tickets
United Airlines
2 Dec
YOW6:00 a.m.Ottawa
25h 22m
1 stop
IAD7:22 a.m.Washington, D.C. Dulles Intl
3 Dec
IAD1:19 p.m.Washington, D.C. Dulles Intl
1h 48m
YOW3:07 p.m.Ottawa
C$ 340
United Airlines
18 Dec
YOW4:42 p.m.Ottawa
6h 03m
1 stop
DCA10:45 p.m.Washington, D.C. Reagan-National
3 Jan
DCA6:59 a.m.Washington, D.C. Reagan-National
6h 11m
1 stop
YOW1:10 p.m.Ottawa
C$ 475
United Airlines
8 Nov
YOW6:00 a.m.Ottawa
4h 24m
1 stop
DCA10:24 a.m.Washington, D.C. Reagan-National
8 Nov
DCA12:55 p.m.Washington, D.C. Reagan-National
1h 34m
YOW2:29 p.m.Ottawa
C$ 543

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

Our best Porter Airlines deals on Ottawa to Washington, D.C. flight tickets
Porter Airlines
9 Nov
YOW12:15 p.m.Ottawa
5h 29m
1 stop
IAD5:44 p.m.Washington, D.C. Dulles Intl
5 Apr
IAD11:20 a.m.Washington, D.C. Dulles Intl
5h 29m
1 stop
YOW4:49 p.m.Ottawa
C$ 433
Porter Airlines
30 Nov
YOW12:15 p.m.Ottawa
5h 29m
1 stop
IAD5:44 p.m.Washington, D.C. Dulles Intl
2 Dec
IAD11:20 a.m.Washington, D.C. Dulles Intl
5h 18m
1 stop
YOW4:38 p.m.Ottawa
C$ 436
Porter Airlines
11 Dec
YOW10:20 a.m.Ottawa
7h 25m
1 stop
IAD5:45 p.m.Washington, D.C. Dulles Intl
12 Dec
IAD11:20 a.m.Washington, D.C. Dulles Intl
5h 18m
1 stop
YOW4:38 p.m.Ottawa
C$ 467

momondo Fare Finder

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

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

OttawaWashington, D.C.

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

YOWIAD

Ottawa

Wed 2/12

6:00 a.m.-7:22 a.m.

1 stop25h 22m

Washington, D.C. Dulles Intl

Thu 3/12

1:19 p.m.-3:07 p.m.

Nonstop1h 48m

C$ 340
Quickest round-trip

OttawaWashington, D.C.

YOW Ottawa - DCA Washington, D.C. Reagan-National

YOWDCA

Ottawa

Wed 11/11

9:00 a.m.-3:24 p.m.

1 stop6h 24m

Washington, D.C. Reagan-National

Fri 13/11

6:00 a.m.-9:47 a.m.

1 stop3h 47m

C$ 426

OttawaWashington, D.C.

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

YOWIAD

Ottawa

Wed 11/11

9:10 a.m.-3:45 p.m.

1 stop6h 35m

Washington, D.C. Dulles Intl

Fri 13/11

5:20 p.m.-9:52 p.m.

1 stop4h 32m

C$ 429

OttawaWashington, D.C.

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

YOWIAD

Ottawa

Tue 1/12

2:00 p.m.-7:22 a.m.

2 stops17h 22m

Washington, D.C. Dulles Intl

Wed 2/12

1:19 p.m.-3:07 p.m.

Nonstop1h 48m

C$ 429

OttawaWashington, D.C.

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

YOWIAD

Ottawa

Wed 2/12

2:00 p.m.-8:10 p.m.

1 stop6h 10m

Washington, D.C. Dulles Intl

Thu 3/12

5:20 p.m.-9:52 p.m.

1 stop4h 32m

C$ 429

OttawaWashington, D.C.

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

YOWIAD

Ottawa

Sun 15/11

12:15 p.m.-5:44 p.m.

1 stop5h 29m

Washington, D.C. Dulles Intl

Sun 22/11

11:20 a.m.-4:37 p.m.

1 stop5h 17m

C$ 433

OttawaWashington, D.C.

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

YOWIAD

Ottawa

Mon 9/11

12:15 p.m.-5:44 p.m.

1 stop5h 29m

Washington, D.C. Dulles Intl

Mon 5/4

11:20 a.m.-4:49 p.m.

1 stop5h 29m

C$ 433

OttawaWashington, D.C.

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

YOWIAD

Ottawa

Wed 2/12

3:15 p.m.-2:49 p.m.

2 stops23h 34m

Washington, D.C. Dulles Intl

Sun 6/12

11:20 a.m.-4:38 p.m.

1 stop5h 18m

C$ 443

OttawaWashington, D.C.

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

YOWIAD

Ottawa

Tue 24/11

7:05 a.m.-10:02 p.m.

1 stop14h 57m

Washington, D.C. Dulles Intl

Tue 1/12

3:34 p.m.-10:06 p.m.

2 stops30h 32m

C$ 469

OttawaWashington, D.C.

YOW Ottawa - DCA Washington, D.C. Reagan-National

YOWDCA

Ottawa

Fri 18/12

4:42 p.m.-10:45 p.m.

1 stop6h 03m

Washington, D.C. Reagan-National

Sun 3/1

6:59 a.m.-1:10 p.m.

1 stop6h 11m

C$ 475

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 Washington, D.C. from

How to get the cheapest flight ticket from Ottawa to Washington, D.C.

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 Ottawa and Washington, D.C.?

Prices are currently low for flights on this route.

Typical prices usually range from C$ 539 to C$ 857.
The lowest price recently found on this route was C$ 340.

What is the cheapest month to fly to Washington, D.C.?

If you aren’t able to travel during the month of January, then book flights to Washington, D.C. from Ottawa during December instead. Flights to Washington, D.C. in December, while not as cheap as those in January, still average around C$ 509.

What is the cheapest day to depart on your flight to Washington, D.C.?

The cheapest day to depart from Ottawa to Washington, D.C. is on a Thursday. Travellers who choose to depart for Washington, D.C. on a Thursday will often find tickets for as low as C$ 783. The most expensive day to fly to Washington, D.C. is Sunday, with ticket prices averaging around C$ 996.

What is the cheapest time of day to depart on your flight to Washington, D.C.?

In the evening is the cheapest time of day to fly from Ottawa to Washington, D.C. when you can find flight prices for as low as C$ 796. Flying to Washington, D.C. in the evening is an ideal time because this is during off-peak travel hours. At noon is when there is more demand to fly to Washington, D.C., so prices are often more expensive at around C$ 1,044 per ticket.

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

Fly from Ottawa to Washington, D.C. Dulles Intl for the best Ottawa - Washington, D.C. flight prices

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

There are 4 cabin classes available to choose from on Ottawa to Washington, D.C. 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 Ottawa to Washington, D.C. flights?

You could potentially save up to 58% on your flight if you consider stops on a Ottawa to Washington, D.C. flight.

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

As of October 2026, prices for Ottawa to Washington, D.C. flights are approximately 7% cheaper when compared to flights at the same time last year.

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

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

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

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

Best price found

C$ 221

Fastest flight time

1h 34m

Direct flights

Every day

Airports in Washington, D.C.

2 airports
The best one-way flight to Washington, D.C. from Ottawa in the past 72 hours is C$ 221. The best round-trip flight deal from Ottawa to Washington, D.C. found on momondo in the last 72 hours is C$ 340.
The fastest flight from Ottawa to Washington, D.C. takes 1h 34m
Direct flights go from Ottawa to Washington, D.C. every day.
There are 2 airports in Washington, D.C.. From Ottawa there are direct flights to Washington, D.C. Reagan-National (DCA), Washington, D.C. Dulles Intl (IAD).
Search flight deals

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

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

    Washington, D.C. is 731.6 km away from Ottawa. A reasonable flight in good conditions will take 1h 34m.

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

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

  • How many operators does momondo search for flights from Ottawa Airport to Washington, D.C.?

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

    The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Ottawa Airport to Washington, D.C..

  • What documentation or ID do you need to fly to Washington, D.C.?

    The travel and health documents required for your trip to Washington, D.C. 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 Washington, D.C.. 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 Ottawa to Washington, D.C.?

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

Best airlines flying from Ottawa to Washington, D.C.

Compare and see reviews for airlines that fly from Ottawa to Washington, D.C. with momondo
Airline
Rating
Free Cancellation
Price
United AirlinesPriceFrom C$ 271Free CancellationRating
7.3
10,404 reviews
Search United Airlines flights
Porter AirlinesPriceFrom C$ 321Free CancellationRating
8.0
467 reviews
Search Porter Airlines flights
Air CanadaPriceFrom C$ 365Free CancellationRating
7.1
11,794 reviews
Search Air Canada flights

  • United Airlines Flights From Ottawa to Washington, D.C.

    United Airlines flies from Ottawa to Washington, D.C. around 17 times per week, with 10,394 momondo users rating the airline 7.3/10. The cheapest United Airlines deal from Ottawa to Washington, D.C. in the last 72 hours was C$ 271 (round-trip), much lower than the average airfare cost of C$ 574 for United Airlines flights on this route.

  • Air Canada Flights From Ottawa to Washington, D.C.

    Another popular option for Ottawa to Washington, D.C. flights is Air Canada (7.1/10, 11,790 ratings). Air Canada flies from Ottawa to Washington, D.C. around 20 times per week, with deals starting from C$ 365 round-trip and rising to an average price of around C$ 612.

Travelling to a place near Washington, D.C.?

Book flights to Washington, D.C. if you plan to visit one of these locations
Upper Marlboro
Gaithersburg
Arlington
Towson
Gettysburg
Fredericksburg
Woodbridge
National Harbor
Herndon
Silver Spring
Fairfax
McLean
Falls Church
Alexandria
Easton
Rockville
Camp Springs
Tysons

Why use momondo?

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

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

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

Yes. momondo allows you to filter the results for Ottawa to Washington, D.C. flights to just show those with flexible booking policies.

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

Once you have performed a search in the form on the page, momondo provides useful filters and insights. We can show you the cheapest days and times to fly as well as help filter your options to help you make an informed choice when booking flights to Washington, D.C. from Ottawa.

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

If you are not ready to book a flight from Ottawa to Washington, D.C. now, use our insights above to find helpful tips or alternatively set up a price alert, where momondo will track prices on flights to Washington, D.C. and let you know when they change.

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Find better results for your trip to the United States

Fly into one of these airports located in Washington, D.C.

Washington, D.C. Reagan-National Airport
Washington, D.C. Dulles Intl Airport