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Cheap flights from Ottawa to Washington, D.C. from C$ 188

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Ottawa to Washington, D.C. departing on 18/12. 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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Find the cheapest flights from Ottawa to Washington, D.C.

Cheap round-trip flights

Enter your travel dates to find the best prices.
Multiple Airlines Logo
4:15 p.m. - 7:01 p.m.YOW-BWI
26h 46m1 stop
Multiple Airlines Logo
8:00 a.m. - 5:13 p.m.BWI-YOW
9h 13m1 stop
C$ 385Multiple Airlines
Find Deal
Mon, 12 Jan - Tue, 20 Jan
Multiple Airlines Logo
4:15 p.m. - 7:01 p.m.YOW-BWI
26h 46m1 stop
Multiple Airlines Logo
8:00 a.m. - 5:13 p.m.BWI-YOW
9h 13m1 stop
C$ 387Multiple Airlines
Find Deal
Mon, 12 Jan - Tue, 20 Jan
Multiple Airlines Logo
4:15 p.m. - 7:01 p.m.YOW-BWI
26h 46m1 stop
Multiple Airlines Logo
7:24 p.m. - 5:15 p.m.BWI-YOW
21h 51m1 stop
C$ 394Multiple Airlines
Find Deal
Mon, 12 Jan - Fri, 6 Feb
Air Canada Logo
2:05 p.m. - 7:45 p.m.YOW-DCA
5h 40m1 stop
Air Canada Logo
6:00 a.m. - 11:18 a.m.DCA-YOW
5h 18m1 stop
C$ 405Air Canada
Find Deal
Sat, 13 Dec - Sat, 3 Jan
United Airlines Logo
7:27 p.m. - 9:25 p.m.YOW-IAD
1h 58mdirect
United Airlines Logo
10:08 p.m. - 11:54 p.m.IAD-YOW
1h 46mdirect
C$ 405United Airlines
Find Deal
Wed, 24 Dec - Sat, 3 Jan
Air Canada Logo
12:05 p.m. - 6:05 p.m.YOW-DCA
6h 00m1 stop
Air Canada Logo
6:00 a.m. - 9:38 a.m.DCA-YOW
3h 38m1 stop
C$ 406Air Canada
Find Deal
Wed, 24 Dec - Sat, 3 Jan
Porter Airlines Logo
1:20 p.m. - 5:14 p.m.YOW-IAD
3h 54m1 stop
Porter Airlines Logo
6:30 p.m. - 10:29 p.m.IAD-YOW
3h 59m1 stop
C$ 408Porter Airlines
Find Deal
Fri, 19 Dec - Sun, 28 Dec
Multiple Airlines Logo
4:15 p.m. - 7:01 p.m.YOW-BWI
26h 46m1 stop
Multiple Airlines Logo
7:24 p.m. - 5:15 p.m.BWI-YOW
21h 51m1 stop
C$ 408Multiple Airlines
Find Deal
Mon, 12 Jan - Fri, 6 Feb
Porter Airlines Logo
6:50 a.m. - 10:24 a.m.YOW-IAD
3h 34m1 stop
Porter Airlines Logo
11:40 a.m. - 3:04 p.m.IAD-YOW
3h 24m1 stop
C$ 411Porter Airlines
Find Deal
Wed, 24 Dec - Sun, 28 Dec
United Airlines Logo
2:17 p.m. - 4:11 p.m.YOW-IAD
1h 54mdirect
United Airlines Logo
8:45 a.m. - 1:36 p.m.IAD-YOW
4h 51m1 stop
C$ 416United Airlines
Find Deal
Sat, 13 Dec - Sun, 14 Dec

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

Our best Porter Airlines deals on Ottawa to Washington, D.C. flight tickets
Porter Airlines
19 Dec
YOW1:20 p.m.Ottawa
3h 54m
1 stop
IAD5:14 p.m.Washington, D.C. Dulles Intl
28 Dec
IAD6:30 p.m.Washington, D.C. Dulles Intl
3h 59m
1 stop
YOW10:29 p.m.Ottawa
C$ 408
Find similar
Porter Airlines
24 Dec
YOW6:50 a.m.Ottawa
3h 34m
1 stop
IAD10:24 a.m.Washington, D.C. Dulles Intl
28 Dec
IAD11:40 a.m.Washington, D.C. Dulles Intl
3h 24m
1 stop
YOW3:04 p.m.Ottawa
C$ 411
Find similar
Porter Airlines
26 Jan
YOW7:00 a.m.Ottawa
3h 19m
1 stop
IAD10:19 a.m.Washington, D.C. Dulles Intl
6 Feb
IAD11:40 a.m.Washington, D.C. Dulles Intl
3h 24m
1 stop
YOW3:04 p.m.Ottawa
C$ 412
Find similar

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

Our best United Airlines deals on Ottawa to Washington, D.C. flight tickets
United Airlines
24 Dec
YOW7:27 p.m.Ottawa
1h 58m
IAD9:25 p.m.Washington, D.C. Dulles Intl
3 Jan
IAD10:08 p.m.Washington, D.C. Dulles Intl
1h 46m
YOW11:54 p.m.Ottawa
C$ 405
Find similar
United Airlines
13 Dec
YOW2:17 p.m.Ottawa
1h 54m
IAD4:11 p.m.Washington, D.C. Dulles Intl
14 Dec
IAD8:45 a.m.Washington, D.C. Dulles Intl
4h 51m
1 stop
YOW1:36 p.m.Ottawa
C$ 416
Find similar
United Airlines
22 Dec
YOW5:59 p.m.Ottawa
5h 07m
1 stop
IAD11:06 p.m.Washington, D.C. Dulles Intl
29 Dec
IAD10:08 p.m.Washington, D.C. Dulles Intl
1h 46m
YOW11:54 p.m.Ottawa
C$ 425
Find similar

momondo Fare Finder

 
Customize your flight search to find flights from Ottawa to Washington, D.C. that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, momondo users made 96,600 searches. Data last updated 20 November 2025.
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

OttawaBaltimore

YOW - BWI

YOWBWI

Ottawa

Mon 12/1

4:15 p.m.-7:01 p.m.

1 stop26h 46m

Baltimore/Washington

Tue 20/1

8:00 a.m.-5:13 p.m.

1 stop9h 13m

C$ 385

OttawaBaltimore

YOW - BWI

YOWBWI

Ottawa

Mon 12/1

4:15 p.m.-7:01 p.m.

1 stop26h 46m

Baltimore/Washington

Tue 20/1

8:00 a.m.-5:13 p.m.

1 stop9h 13m

C$ 387

OttawaBaltimore

YOW - BWI

YOWBWI

Ottawa

Mon 12/1

4:15 p.m.-7:01 p.m.

1 stop26h 46m

Baltimore/Washington

Fri 6/2

7:24 p.m.-5:15 p.m.

1 stop21h 51m

C$ 394

OttawaWashington, D.C.

YOW - DCA

YOWDCA

Ottawa

Sat 13/12

2:05 p.m.-7:45 p.m.

1 stop5h 40m

Washington, D.C. Reagan-National

Sat 3/1

6:00 a.m.-11:18 a.m.

1 stop5h 18m

C$ 405

OttawaWashington, D.C.

YOW - IAD

YOWIAD

Ottawa

Wed 24/12

7:27 p.m.-9:25 p.m.

Nonstop1h 58m

Washington, D.C. Dulles Intl

Sat 3/1

10:08 p.m.-11:54 p.m.

Nonstop1h 46m

C$ 405

OttawaWashington, D.C.

YOW - DCA

YOWDCA

Ottawa

Wed 24/12

12:05 p.m.-6:05 p.m.

1 stop6h 00m

Washington, D.C. Reagan-National

Sat 3/1

6:00 a.m.-9:38 a.m.

1 stop3h 38m

C$ 406

OttawaWashington, D.C.

YOW - IAD

YOWIAD

Ottawa

Fri 19/12

1:20 p.m.-5:14 p.m.

1 stop3h 54m

Washington, D.C. Dulles Intl

Sun 28/12

6:30 p.m.-10:29 p.m.

1 stop3h 59m

C$ 408

OttawaBaltimore

YOW - BWI

YOWBWI

Ottawa

Mon 12/1

4:15 p.m.-7:01 p.m.

1 stop26h 46m

Baltimore/Washington

Fri 6/2

7:24 p.m.-5:15 p.m.

1 stop21h 51m

C$ 408

OttawaWashington, D.C.

YOW - IAD

YOWIAD

Ottawa

Wed 24/12

6:50 a.m.-10:24 a.m.

1 stop3h 34m

Washington, D.C. Dulles Intl

Sun 28/12

11:40 a.m.-3:04 p.m.

1 stop3h 24m

C$ 411

OttawaWashington, D.C.

YOW - IAD

YOWIAD

Ottawa

Sat 13/12

2:17 p.m.-4:11 p.m.

Nonstop1h 54m

Washington, D.C. Dulles Intl

Sun 14/12

8:45 a.m.-1:36 p.m.

1 stop4h 51m

C$ 416

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 cheapest month to fly to Washington, D.C.?

If you aren’t able to travel during the month of March, then book flights to Washington, D.C. from Ottawa during April instead. Flights to Washington, D.C. in April, while not as cheap as those in March, still average around C$ 422.

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 Friday. Travellers who choose to depart for Washington, D.C. on a Friday will often find tickets for as low as C$ 843. The most expensive day to fly to Washington, D.C. is Thursday, with ticket prices averaging around C$ 1,030.

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

In the afternoon 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$ 445. Flying to Washington, D.C. in the afternoon 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$ 1,124 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 28% 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 November 2025, prices for Ottawa to Washington, D.C. flights are approximately 13% more expensive 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$ 304

Fastest flight time

1h 49m

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$ 304. The best round-trip flight deal from Ottawa to Washington, D.C. found on momondo in the last 72 hours is C$ 517.
The fastest flight from Ottawa to Washington, D.C. takes 1h 49m
Direct flights go from Ottawa to Washington, D.C. every day.
There are 2 airports near Washington, D.C.: Washington, D.C. Reagan-National (DCA), Washington, D.C. Dulles Intl (IAD)
Search flight deals

  • 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 49m.

  • 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$ 308Free CancellationRating
7.4
9,027 reviews
Search United Airlines flights
Air CanadaPriceFrom C$ 317Free CancellationRating
7.1
10,462 reviews
Search Air Canada flights
Porter AirlinesPriceFrom C$ 337Free CancellationRating
8.0
393 reviews
Search Porter Airlines flights

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

    United Airlines flies from Ottawa to Washington, D.C. around 26 times per week, with 9,027 momondo users rating the airline 7.4/10. The cheapest United Airlines deal from Ottawa to Washington, D.C. in the last 72 hours was C$ 308 (round-trip), much lower than the average airfare cost of C$ 679 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, 10,462 ratings). Air Canada flies from Ottawa to Washington, D.C. around 26 times per week, with deals starting from C$ 317 round-trip and rising to an average price of around C$ 554.

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

Book flights to Washington, D.C. if you plan to visit one of these locations
Gettysburg
Alexandria
Fairfax
Linthicum Heights
Silver Spring
Bethesda
Reston
Herndon
Laurel
Capitol Heights
Arlington
Manassas
Fredericksburg
Woodbridge
Rockville
McLean
National Harbor
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.

Airports listed have a maximum distance of 36.1 km from Washington, D.C.
Washington, D.C. Reagan-National Airport
Washington, D.C. Dulles Intl Airport