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Cheap flights from Ottawa to Washington, D.C. from C$ 222

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 26/1. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult

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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
7:00 a.m. - 11:34 p.m.
YOW
-
BWI
16h 34m1 stop
Multiple Airlines Logo
4:47 p.m. - 5:25 p.m.
BWI
-
YOW
24h 38m1 stop
C$ 330Multiple Airlines
Thu, 15 Jan - Sun, 18 Jan
Multiple Airlines Logo
7:00 a.m. - 11:59 p.m.
YOW
-
BWI
16h 59m1 stop
Multiple Airlines Logo
5:47 p.m. - 5:25 p.m.
BWI
-
YOW
23h 38m1 stop
C$ 334Multiple Airlines
Thu, 22 Jan - Sun, 25 Jan
Multiple Airlines Logo
4:20 p.m. - 7:03 p.m.
YOW
-
BWI
26h 43m3 stops
Multiple Airlines Logo
1:00 p.m. - 12:25 a.m.
BWI
-
YOW
11h 25m1 stop
C$ 335Multiple Airlines
Wed, 7 Jan - Wed, 14 Jan
Multiple Airlines Logo
9:40 a.m. - 12:36 a.m.
YOW
-
BWI
14h 56m2 stops
Multiple Airlines Logo
5:47 p.m. - 5:25 p.m.
BWI
-
YOW
23h 38m1 stop
C$ 374Multiple Airlines
Thu, 22 Jan - Sun, 25 Jan
Porter Airlines Logo
7:00 a.m. - 10:19 a.m.
YOW
-
IAD
3h 19m1 stop
Porter Airlines Logo
11:40 a.m. - 3:04 p.m.
IAD
-
YOW
3h 24m1 stop
C$ 375Porter Airlines
Mon, 26 Jan - Fri, 6 Feb
Air Canada Logo
10:30 a.m. - 12:19 p.m.
YOW
-
DCA
1h 49mdirect
Air Canada Logo
12:55 p.m. - 2:30 p.m.
DCA
-
YOW
1h 35mdirect
C$ 385Air Canada
Thu, 15 Jan - Sun, 18 Jan
Air Canada Logo
10:30 a.m. - 12:19 p.m.
YOW
-
DCA
1h 49mdirect
Air Canada Logo
6:00 a.m. - 9:42 a.m.
DCA
-
YOW
3h 42m1 stop
C$ 390Air Canada
Thu, 15 Jan - Sun, 18 Jan
United Airlines Logo
7:27 p.m. - 9:25 p.m.
YOW
-
IAD
1h 58mdirect
United Airlines Logo
8:29 a.m. - 1:32 p.m.
IAD
-
YOW
5h 03m1 stop
C$ 410United Airlines
Mon, 26 Jan - Thu, 5 Feb
Porter Airlines Logo
7:00 a.m. - 10:19 a.m.
YOW
-
IAD
3h 19m1 stop
Porter Airlines Logo
11:35 a.m. - 7:59 p.m.
IAD
-
YOW
8h 24m1 stop
C$ 411Porter Airlines
Thu, 8 Jan - Thu, 15 Jan
United Airlines Logo
7:27 p.m. - 9:25 p.m.
YOW
-
IAD
1h 58mdirect
United Airlines Logo
8:20 a.m. - 9:18 p.m.
IAD
-
YOW
12h 58m1 stop
C$ 421United Airlines
Wed, 7 Jan - Thu, 8 Jan

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

Our best Porter Airlines deals on Ottawa to Washington, D.C. flight tickets
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$ 375
Find similar
Porter Airlines
26 Jan
YOW7:00 a.m.Ottawa
3h 19m
1 stop
IAD10:19 a.m.Washington, D.C. Dulles Intl
5 Feb
IAD11:40 a.m.Washington, D.C. Dulles Intl
3h 24m
1 stop
YOW3:04 p.m.Ottawa
C$ 410
Find similar
Porter Airlines
8 Jan
YOW7:00 a.m.Ottawa
3h 19m
1 stop
IAD10:19 a.m.Washington, D.C. Dulles Intl
15 Jan
IAD11:35 a.m.Washington, D.C. Dulles Intl
8h 24m
1 stop
YOW7:59 p.m.Ottawa
C$ 411
Find similar

Air Canada flights from Ottawa to Washington, D.C.

Our best Air Canada deals on Ottawa to Washington, D.C. flight tickets
Air Canada
15 Jan
YOW10:30 a.m.Ottawa
1h 49m
DCA12:19 p.m.Washington, D.C. Reagan-National
18 Jan
DCA12:55 p.m.Washington, D.C. Reagan-National
1h 35m
YOW2:30 p.m.Ottawa
C$ 385
Find similar
Air Canada
15 Jan
YOW10:30 a.m.Ottawa
1h 49m
DCA12:19 p.m.Washington, D.C. Reagan-National
18 Jan
DCA6:00 a.m.Washington, D.C. Reagan-National
3h 42m
1 stop
YOW9:42 a.m.Ottawa
C$ 390
Find similar
Air Canada
7 Jan
YOW10:30 a.m.Ottawa
1h 49m
DCA12:19 p.m.Washington, D.C. Reagan-National
14 Jan
DCA12:55 p.m.Washington, D.C. Reagan-National
1h 35m
YOW2:30 p.m.Ottawa
C$ 392
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 11 December 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

Thu 15/1

7:00 a.m.-11:34 p.m.

1 stop16h 34m

Baltimore/Washington

Sun 18/1

4:47 p.m.-5:25 p.m.

1 stop24h 38m

C$ 330

OttawaBaltimore

YOW - BWI

YOWBWI

Ottawa

Thu 22/1

7:00 a.m.-11:59 p.m.

1 stop16h 59m

Baltimore/Washington

Sun 25/1

5:47 p.m.-5:25 p.m.

1 stop23h 38m

C$ 334

OttawaBaltimore

YOW - BWI

YOWBWI

Ottawa

Wed 7/1

4:20 p.m.-7:03 p.m.

3 stops26h 43m

Baltimore/Washington

Wed 14/1

1:00 p.m.-12:25 a.m.

1 stop11h 25m

C$ 335

OttawaBaltimore

YOW - BWI

YOWBWI

Ottawa

Thu 22/1

9:40 a.m.-12:36 a.m.

2 stops14h 56m

Baltimore/Washington

Sun 25/1

5:47 p.m.-5:25 p.m.

1 stop23h 38m

C$ 374

OttawaWashington, D.C.

YOW - IAD

YOWIAD

Ottawa

Mon 26/1

7:00 a.m.-10:19 a.m.

1 stop3h 19m

Washington, D.C. Dulles Intl

Fri 6/2

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

1 stop3h 24m

C$ 375

OttawaWashington, D.C.

YOW - DCA

YOWDCA

Ottawa

Thu 15/1

10:30 a.m.-12:19 p.m.

Nonstop1h 49m

Washington, D.C. Reagan-National

Sun 18/1

12:55 p.m.-2:30 p.m.

Nonstop1h 35m

C$ 385

OttawaWashington, D.C.

YOW - DCA

YOWDCA

Ottawa

Thu 15/1

10:30 a.m.-12:19 p.m.

Nonstop1h 49m

Washington, D.C. Reagan-National

Sun 18/1

6:00 a.m.-9:42 a.m.

1 stop3h 42m

C$ 390

OttawaWashington, D.C.

YOW - IAD

YOWIAD

Ottawa

Mon 26/1

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

Nonstop1h 58m

Washington, D.C. Dulles Intl

Thu 5/2

8:29 a.m.-1:32 p.m.

1 stop5h 03m

C$ 410

OttawaWashington, D.C.

YOW - IAD

YOWIAD

Ottawa

Thu 8/1

7:00 a.m.-10:19 a.m.

1 stop3h 19m

Washington, D.C. Dulles Intl

Thu 15/1

11:35 a.m.-7:59 p.m.

1 stop8h 24m

C$ 411

OttawaWashington, D.C.

YOW - IAD

YOWIAD

Ottawa

Wed 7/1

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

Nonstop1h 58m

Washington, D.C. Dulles Intl

Thu 8/1

8:20 a.m.-9:18 p.m.

1 stop12h 58m

C$ 421

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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$ 415.

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$ 832. The most expensive day to fly to Washington, D.C. is Thursday, with ticket prices averaging around C$ 991.

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$ 438. 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$ 1,119 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 27% 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 December 2025, prices for Ottawa to Washington, D.C. flights are approximately 32% 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$ 317

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$ 317. The best round-trip flight deal from Ottawa to Washington, D.C. found on momondo in the last 72 hours is C$ 535.
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 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

  • 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$ 303Free CancellationRating
7.4
9,095 reviews
Search United Airlines flights
Porter AirlinesPriceFrom C$ 332Free CancellationRating
8.0
397 reviews
Search Porter Airlines flights
Air CanadaPriceFrom C$ 365Free CancellationRating
7.1
10,514 reviews
Search Air Canada flights

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

    United Airlines flies from Ottawa to Washington, D.C. around 25 times per week, with 9,095 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$ 303 (round-trip), much lower than the average airfare cost of C$ 669 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, 10,514 ratings). Air Canada flies from Ottawa to Washington, D.C. around 27 times per week, with deals starting from C$ 365 round-trip and rising to an average price of around C$ 540.

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
Gaithersburg
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