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Cheap flights from Ottawa to Washington, D.C. from C$ 228

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.
Porter Airlines Logo
10:40 a.m. - 3:10 p.m.YOW  Ottawa-IAD Washington, D.C. Dulles Intl
4h 30m1 stop Toronto Island
Porter Airlines Logo
3:50 p.m. - 8:02 p.m.IAD  Washington, D.C. Dulles Intl-YOW Ottawa
4h 12m1 stop Toronto Island
C$ 408Porter Airlines
Thu, 17 Sep - Sun, 20 Sep
Porter Airlines Logo
10:40 a.m. - 3:10 p.m.YOW  Ottawa-IAD Washington, D.C. Dulles Intl
4h 30m1 stop Toronto Island
Porter Airlines Logo
11:20 a.m. - 4:09 p.m.IAD  Washington, D.C. Dulles Intl-YOW Ottawa
4h 49m1 stop Toronto Island
C$ 408Porter Airlines
Sun, 11 Oct - Tue, 27 Oct
Porter Airlines Logo
10:40 a.m. - 3:10 p.m.YOW  Ottawa-IAD Washington, D.C. Dulles Intl
4h 30m1 stop Toronto Island
Porter Airlines Logo
11:25 a.m. - 5:52 p.m.IAD  Washington, D.C. Dulles Intl-YOW Ottawa
6h 27m1 stop Toronto Island
C$ 408Porter Airlines
Thu, 24 Sep - Mon, 28 Sep
Air Canada Logo
10:30 a.m. - 12:19 p.m.YOW  Ottawa-DCA Washington, D.C. Reagan-National
1h 49mdirect
Air Canada Logo
12:55 p.m. - 2:29 p.m.DCA  Washington, D.C. Reagan-National-YOW Ottawa
1h 34mdirect
C$ 425Air Canada
Wed, 11 Nov - Sun, 15 Nov
Air Canada Logo
10:40 a.m. - 12:14 p.m.YOW  Ottawa-DCA Washington, D.C. Reagan-National
1h 34mdirect
Air Canada Logo
12:55 p.m. - 2:27 p.m.DCA  Washington, D.C. Reagan-National-YOW Ottawa
1h 32mdirect
C$ 425Air Canada
Fri, 18 Sep - Tue, 22 Sep
Air Canada Logo
10:35 a.m. - 12:09 p.m.YOW  Ottawa-DCA Washington, D.C. Reagan-National
1h 34mdirect
Air Canada Logo
12:50 p.m. - 2:22 p.m.DCA  Washington, D.C. Reagan-National-YOW Ottawa
1h 32mdirect
C$ 425Air Canada
Fri, 16 Oct - Mon, 19 Oct
Multiple Airlines Logo
7:00 a.m. - 1:00 p.m.YOW  Ottawa-BWI Baltimore/Washington
30h 00m1 stop Fort Lauderdale
Multiple Airlines Logo
10:22 a.m. - 5:35 a.m.BWI  Baltimore/Washington-YOW Ottawa
19h 13m2 stops Atlanta Hartsfield-Jackson Calgary
C$ 471Multiple Airlines
Mon, 21 Sep - Mon, 28 Sep
Multiple Airlines Logo
6:55 a.m. - 3:10 p.m.YOW  Ottawa-IAD Washington, D.C. Dulles Intl
8h 15m1 stop Toronto Pearson Intl
Multiple Airlines Logo
3:50 p.m. - 12:20 a.m.IAD  Washington, D.C. Dulles Intl-YOW Ottawa
8h 30m1 stop Toronto Island
C$ 472Multiple Airlines
Thu, 17 Sep - Sun, 20 Sep
United Airlines Logo
6:00 a.m. - 7:43 a.m.YOW  Ottawa-IAD Washington, D.C. Dulles Intl
1h 43mdirect
United Airlines Logo
8:15 a.m. - 9:56 a.m.IAD  Washington, D.C. Dulles Intl-YOW Ottawa
1h 41mdirect
C$ 479United Airlines
Fri, 9 Oct - Fri, 16 Oct
United Airlines Logo
7:30 p.m. - 9:14 p.m.YOW  Ottawa-IAD Washington, D.C. Dulles Intl
1h 44mdirect
United Airlines Logo
8:15 a.m. - 9:56 a.m.IAD  Washington, D.C. Dulles Intl-YOW Ottawa
1h 41mdirect
C$ 489United Airlines
Mon, 21 Sep - Mon, 28 Sep

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

Our best Porter Airlines deals on Ottawa to Washington, D.C. flight tickets
Porter Airlines
17 Sep
YOW10:40 a.m.Ottawa
4h 30m
1 stop
IAD3:10 p.m.Washington, D.C. Dulles Intl
20 Sep
IAD3:50 p.m.Washington, D.C. Dulles Intl
4h 12m
1 stop
YOW8:02 p.m.Ottawa
C$ 408
Porter Airlines
9 Oct
YOW10:40 a.m.Ottawa
4h 30m
1 stop
IAD3:10 p.m.Washington, D.C. Dulles Intl
16 Oct
IAD3:50 p.m.Washington, D.C. Dulles Intl
4h 12m
1 stop
YOW8:02 p.m.Ottawa
C$ 411
Porter Airlines
18 Sep
YOW10:40 a.m.Ottawa
4h 30m
1 stop
IAD3:10 p.m.Washington, D.C. Dulles Intl
20 Sep
IAD11:25 a.m.Washington, D.C. Dulles Intl
6h 27m
1 stop
YOW5:52 p.m.Ottawa
C$ 413

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 Sep
YOW10:40 a.m.Ottawa
1h 34m
DCA12:14 p.m.Washington, D.C. Reagan-National
22 Sep
DCA12:55 p.m.Washington, D.C. Reagan-National
1h 32m
YOW2:27 p.m.Ottawa
C$ 425
Air Canada
1 Nov
YOW10:30 a.m.Ottawa
1h 49m
DCA12:19 p.m.Washington, D.C. Reagan-National
20 Nov
DCA12:55 p.m.Washington, D.C. Reagan-National
1h 34m
YOW2:29 p.m.Ottawa
C$ 435
Air Canada
15 Sep
YOW10:40 a.m.Ottawa
1h 34m
DCA12:14 p.m.Washington, D.C. Reagan-National
22 Sep
DCA9:40 a.m.Washington, D.C. Reagan-National
4h 18m
1 stop
YOW1:58 p.m.Ottawa
C$ 438

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

Thu 17/9

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

1 stop4h 30m

Washington, D.C. Dulles Intl

Sun 20/9

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

1 stop4h 12m

C$ 408

OttawaWashington, D.C.

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

YOWIAD

Ottawa

Sun 11/10

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

1 stop4h 30m

Washington, D.C. Dulles Intl

Tue 27/10

11:20 a.m.-4:09 p.m.

1 stop4h 49m

C$ 408

OttawaWashington, D.C.

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

YOWIAD

Ottawa

Thu 24/9

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

1 stop4h 30m

Washington, D.C. Dulles Intl

Mon 28/9

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

1 stop6h 27m

C$ 408

OttawaWashington, D.C.

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

YOWDCA

Ottawa

Wed 11/11

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

Nonstop1h 49m

Washington, D.C. Reagan-National

Sun 15/11

12:55 p.m.-2:29 p.m.

Nonstop1h 34m

C$ 425
Quickest round-trip

OttawaWashington, D.C.

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

YOWDCA

Ottawa

Fri 18/9

10:40 a.m.-12:14 p.m.

Nonstop1h 34m

Washington, D.C. Reagan-National

Tue 22/9

12:55 p.m.-2:27 p.m.

Nonstop1h 32m

C$ 425

OttawaWashington, D.C.

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

YOWDCA

Ottawa

Fri 16/10

10:35 a.m.-12:09 p.m.

Nonstop1h 34m

Washington, D.C. Reagan-National

Mon 19/10

12:50 p.m.-2:22 p.m.

Nonstop1h 32m

C$ 425

OttawaBaltimore

YOW Ottawa - BWI Baltimore/Washington

YOWBWI

Ottawa

Mon 21/9

7:00 a.m.-1:00 p.m.

1 stop30h 00m

Baltimore/Washington

Mon 28/9

10:22 a.m.-5:35 a.m.

2 stops19h 13m

C$ 471

OttawaWashington, D.C.

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

YOWIAD

Ottawa

Thu 17/9

6:55 a.m.-3:10 p.m.

1 stop8h 15m

Washington, D.C. Dulles Intl

Sun 20/9

3:50 p.m.-12:20 a.m.

1 stop8h 30m

C$ 472

OttawaWashington, D.C.

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

YOWIAD

Ottawa

Fri 9/10

6:00 a.m.-7:43 a.m.

Nonstop1h 43m

Washington, D.C. Dulles Intl

Fri 16/10

8:15 a.m.-9:56 a.m.

Nonstop1h 41m

C$ 479

OttawaWashington, D.C.

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

YOWIAD

Ottawa

Mon 21/9

7:30 p.m.-9:14 p.m.

Nonstop1h 44m

Washington, D.C. Dulles Intl

Mon 28/9

8:15 a.m.-9:56 a.m.

Nonstop1h 41m

C$ 489

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$ 508 to C$ 887.
The lowest price recently found on this route was C$ 408.

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$ 485.

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$ 790. The most expensive day to fly to Washington, D.C. is Sunday, with ticket prices averaging around C$ 956.

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$ 775. 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$ 1,061 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 29% 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 August 2026, prices for Ottawa to Washington, D.C. flights are approximately 6% 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$ 228

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$ 228. The best round-trip flight deal from Ottawa to Washington, D.C. found on momondo in the last 72 hours is C$ 408.
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$ 267Free CancellationRating
7.4
10,121 reviews
Search United Airlines flights
Porter AirlinesPriceFrom C$ 316Free CancellationRating
8.0
458 reviews
Search Porter Airlines flights
Air CanadaPriceFrom C$ 360Free CancellationRating
7.1
11,539 reviews
Search Air Canada flights

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

    United Airlines flies from Ottawa to Washington, D.C. around 30 times per week, with 10,123 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$ 267 (round-trip), much lower than the average airfare cost of C$ 561 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, 11,540 ratings). Air Canada flies from Ottawa to Washington, D.C. around 33 times per week, with deals starting from C$ 360 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
Gaithersburg
Arlington
Fairfax
National Harbor
Fredericksburg
Woodbridge
Herndon
Silver Spring
Gettysburg
Falls Church
Alexandria
McLean
Easton
Rockville
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