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Cheap flights from Ottawa to Washington, D.C. from C$ 206

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 24/4. 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.
United Airlines Logo
5:55 p.m. - 11:19 p.m.
YOW
-
IAD
5h 24m
1 stop
United Airlines Logo
8:15 a.m. - 10:03 a.m.
IAD
-
YOW
1h 48mdirect
C$ 381United Airlines
Sat, 28 Mar - Sun, 29 Mar
Porter Airlines Logo
11:00 a.m. - 5:14 p.m.
YOW
-
IAD
6h 14m
1 stop
Porter Airlines Logo
6:30 p.m. - 10:29 p.m.
IAD
-
YOW
3h 59m
1 stop
C$ 383Porter Airlines
Fri, 6 Mar - Fri, 13 Mar
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$ 394Air Canada
Thu, 26 Feb - Mon, 2 Mar
Air Canada Logo
10:30 a.m. - 12:19 p.m.
YOW
-
DCA
1h 49mdirect
Air Canada Logo
6:00 a.m. - 9:41 a.m.
DCA
-
YOW
3h 41m
1 stop
C$ 398Air Canada
Fri, 6 Mar - Fri, 13 Mar
United Airlines Logo
2:15 p.m. - 4:11 p.m.
YOW
-
IAD
1h 56mdirect
United Airlines Logo
12:38 p.m. - 2:22 p.m.
IAD
-
YOW
1h 44mdirect
C$ 398United Airlines
Tue, 24 Mar - Tue, 31 Mar
Multiple Airlines Logo
6:45 a.m. - 10:24 a.m.
YOW
-
IAD
3h 39m
1 stop
Multiple Airlines Logo
2:58 p.m. - 5:17 p.m.
IAD
-
YOW
26h 19m
2 stops
C$ 399Multiple Airlines
Wed, 4 Mar - Mon, 9 Mar
Air Canada Logo
5:45 a.m. - 10:21 a.m.
YOW
-
DCA
4h 36m
1 stop
Air Canada Logo
12:55 p.m. - 2:30 p.m.
DCA
-
YOW
1h 35mdirect
C$ 399Air Canada
Thu, 26 Feb - Mon, 2 Mar
Porter Airlines Logo
1:20 p.m. - 5:14 p.m.
YOW
-
IAD
3h 54m
1 stop
Porter Airlines Logo
6:30 p.m. - 10:29 p.m.
IAD
-
YOW
3h 59m
1 stop
C$ 403Porter Airlines
Sun, 26 Apr - Thu, 30 Apr
Air Canada Logo
3:55 p.m. - 9:56 p.m.
YOW
-
DCA
6h 01m
1 stop
Air Canada Logo
6:00 a.m. - 9:41 a.m.
DCA
-
YOW
3h 41m
1 stop
C$ 403Air Canada
Fri, 6 Mar - Fri, 13 Mar
Air Canada Logo
5:45 a.m. - 10:21 a.m.
YOW
-
DCA
4h 36m
1 stop
Air Canada Logo
6:00 a.m. - 9:41 a.m.
DCA
-
YOW
3h 41m
1 stop
C$ 405Air Canada
Thu, 26 Feb - Mon, 2 Mar

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

Our best United Airlines deals on Ottawa to Washington, D.C. flight tickets
United Airlines
28 Mar
YOW5:55 p.m.Ottawa
5h 24m
1 stop
IAD11:19 p.m.Washington, D.C. Dulles Intl
29 Mar
IAD8:15 a.m.Washington, D.C. Dulles Intl
1h 48m
YOW10:03 a.m.Ottawa
C$ 381
United Airlines
24 Mar
YOW2:15 p.m.Ottawa
1h 56m
IAD4:11 p.m.Washington, D.C. Dulles Intl
31 Mar
IAD12:38 p.m.Washington, D.C. Dulles Intl
1h 44m
YOW2:22 p.m.Ottawa
C$ 398
United Airlines
22 Mar
YOW9:45 a.m.Ottawa
1h 59m
IAD11:44 a.m.Washington, D.C. Dulles Intl
26 Mar
IAD8:26 a.m.Washington, D.C. Dulles Intl
5h 06m
1 stop
YOW1:32 p.m.Ottawa
C$ 411

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

Our best Porter Airlines deals on Ottawa to Washington, D.C. flight tickets
Porter Airlines
6 Mar
YOW11:00 a.m.Ottawa
6h 14m
1 stop
IAD5:14 p.m.Washington, D.C. Dulles Intl
13 Mar
IAD6:30 p.m.Washington, D.C. Dulles Intl
3h 59m
1 stop
YOW10:29 p.m.Ottawa
C$ 383
Porter Airlines
26 Apr
YOW1:20 p.m.Ottawa
3h 54m
1 stop
IAD5:14 p.m.Washington, D.C. Dulles Intl
30 Apr
IAD6:30 p.m.Washington, D.C. Dulles Intl
3h 59m
1 stop
YOW10:29 p.m.Ottawa
C$ 403
Porter Airlines
27 Mar
YOW11:00 a.m.Ottawa
6h 14m
1 stop
IAD5:14 p.m.Washington, D.C. Dulles Intl
30 Mar
IAD11:40 a.m.Washington, D.C. Dulles Intl
3h 24m
1 stop
YOW3:04 p.m.Ottawa
C$ 435

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 8 February 2026.
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

OttawaWashington, D.C.

YOW - IAD

YOWIAD

Ottawa

Sat 28/3

5:55 p.m.-11:19 p.m.

1 stop5h 24m

Washington, D.C. Dulles Intl

Sun 29/3

8:15 a.m.-10:03 a.m.

Nonstop1h 48m

C$ 381

OttawaWashington, D.C.

YOW - IAD

YOWIAD

Ottawa

Fri 6/3

11:00 a.m.-5:14 p.m.

1 stop6h 14m

Washington, D.C. Dulles Intl

Fri 13/3

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

1 stop3h 59m

C$ 383

OttawaWashington, D.C.

YOW - DCA

YOWDCA

Ottawa

Thu 26/2

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

Nonstop1h 49m

Washington, D.C. Reagan-National

Mon 2/3

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

Nonstop1h 35m

C$ 394

OttawaWashington, D.C.

YOW - DCA

YOWDCA

Ottawa

Fri 6/3

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

Nonstop1h 49m

Washington, D.C. Reagan-National

Fri 13/3

6:00 a.m.-9:41 a.m.

1 stop3h 41m

C$ 398

OttawaWashington, D.C.

YOW - IAD

YOWIAD

Ottawa

Tue 24/3

2:15 p.m.-4:11 p.m.

Nonstop1h 56m

Washington, D.C. Dulles Intl

Tue 31/3

12:38 p.m.-2:22 p.m.

Nonstop1h 44m

C$ 398

OttawaWashington, D.C.

YOW - IAD

YOWIAD

Ottawa

Wed 4/3

6:45 a.m.-10:24 a.m.

1 stop3h 39m

Washington, D.C. Dulles Intl

Mon 9/3

2:58 p.m.-5:17 p.m.

2 stops26h 19m

C$ 399

OttawaWashington, D.C.

YOW - DCA

YOWDCA

Ottawa

Thu 26/2

5:45 a.m.-10:21 a.m.

1 stop4h 36m

Washington, D.C. Reagan-National

Mon 2/3

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

Nonstop1h 35m

C$ 399

OttawaWashington, D.C.

YOW - IAD

YOWIAD

Ottawa

Sun 26/4

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

1 stop3h 54m

Washington, D.C. Dulles Intl

Thu 30/4

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

1 stop3h 59m

C$ 403

OttawaWashington, D.C.

YOW - DCA

YOWDCA

Ottawa

Fri 6/3

3:55 p.m.-9:56 p.m.

1 stop6h 01m

Washington, D.C. Reagan-National

Fri 13/3

6:00 a.m.-9:41 a.m.

1 stop3h 41m

C$ 403

OttawaWashington, D.C.

YOW - DCA

YOWDCA

Ottawa

Thu 26/2

5:45 a.m.-10:21 a.m.

1 stop4h 36m

Washington, D.C. Reagan-National

Mon 2/3

6:00 a.m.-9:41 a.m.

1 stop3h 41m

C$ 405

Flights are sorted by cheapest round-trip flights 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 August, then book flights to Washington, D.C. from Ottawa during March instead. Flights to Washington, D.C. in March, while not as cheap as those in August, 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$ 793. The most expensive day to fly to Washington, D.C. is Sunday, with ticket prices averaging around C$ 921.

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

In the morning 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$ 782. Flying to Washington, D.C. in the morning 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$ 1,079 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 26% 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 February 2026, prices for Ottawa to Washington, D.C. flights are approximately 16% 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$ 277

Fastest flight time

1h 36m

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$ 277. The best round-trip flight deal from Ottawa to Washington, D.C. found on momondo in the last 72 hours is C$ 426.
The fastest flight from Ottawa to Washington, D.C. takes 1h 36m
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 36m.

  • 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$ 234Free CancellationRating
7.4
9,254 reviews
Search United Airlines flights
Porter AirlinesPriceFrom C$ 312Free CancellationRating
7.9
412 reviews
Search Porter Airlines flights
Air CanadaPriceFrom C$ 355Free CancellationRating
7.1
10,697 reviews
Search Air Canada flights

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

    United Airlines flies from Ottawa to Washington, D.C. around 24 times per week, with 9,254 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$ 234 (round-trip), much lower than the average airfare cost of C$ 643 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, 10,697 ratings). Air Canada flies from Ottawa to Washington, D.C. around 24 times per week, with deals starting from C$ 355 round-trip and rising to an average price of around C$ 528.

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
Gaithersburg
Fairfax
Linthicum Heights
Bethesda
Silver Spring
National Harbor
Reston
Laurel
Herndon
Arlington
Fredericksburg
Manassas
Woodbridge
Rockville
McLean
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.

An easier way to manage your Washington, D.C. trip

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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