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Cheap flights from Ottawa to Washington, D.C. from C$ 234

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.
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$ 443Air Canada
Wed, 11 Nov - Fri, 13 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. - 4:37 p.m.IAD  Washington, D.C. Dulles Intl-YOW Ottawa
5h 17m1 stop Toronto Island
C$ 445Porter Airlines
Mon, 23 Nov - Mon, 30 Nov
Multiple Airlines Logo
7:00 a.m. - 9:50 p.m.YOW  Ottawa-IAD Washington, D.C. Dulles Intl
14h 50m1 stop Fort Lauderdale
Multiple Airlines Logo
11:20 a.m. - 7:58 a.m.IAD  Washington, D.C. Dulles Intl-YOW Ottawa
20h 38m1 stop Toronto Island
C$ 448Multiple Airlines
Tue, 8 Dec - Tue, 15 Dec
United Airlines Logo
2:00 p.m. - 3:53 p.m.YOW  Ottawa-IAD Washington, D.C. Dulles Intl
1h 53mdirect
United Airlines Logo
8:35 a.m. - 1:11 p.m.IAD  Washington, D.C. Dulles Intl-YOW Ottawa
4h 36m1 stop Newark
C$ 449United Airlines
Mon, 30 Nov - Wed, 2 Dec
United Airlines Logo
2:00 p.m. - 3:53 p.m.YOW  Ottawa-IAD Washington, D.C. Dulles Intl
1h 53mdirect
United Airlines Logo
1:19 p.m. - 3:07 p.m.IAD  Washington, D.C. Dulles Intl-YOW Ottawa
1h 48mdirect
C$ 449United Airlines
Mon, 30 Nov - Wed, 2 Dec
Air Canada Logo
12:05 p.m. - 4:47 p.m.YOW  Ottawa-IAD Washington, D.C. Dulles Intl
4h 42m1 stop Toronto Island
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$ 452Air Canada
Thu, 3 Dec - Sun, 6 Dec
Multiple Airlines Logo
7:00 a.m. - 9:50 p.m.YOW  Ottawa-IAD Washington, D.C. Dulles Intl
14h 50m1 stop Fort Lauderdale
Multiple Airlines Logo
11:20 a.m. - 7:58 a.m.IAD  Washington, D.C. Dulles Intl-YOW Ottawa
20h 38m1 stop Toronto Island
C$ 452Multiple Airlines
Tue, 8 Dec - Tue, 15 Dec
Air Canada Logo
12:05 p.m. - 4:47 p.m.YOW  Ottawa-IAD Washington, D.C. Dulles Intl
4h 42m1 stop Toronto Island
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$ 452Air Canada
Mon, 23 Nov - Mon, 30 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. - 4:37 p.m.IAD  Washington, D.C. Dulles Intl-YOW Ottawa
5h 17m1 stop Toronto Island
C$ 483Porter Airlines
Fri, 13 Nov - Sun, 15 Nov
Porter Airlines Logo
12:15 p.m. - 5:14 p.m.YOW  Ottawa-IAD Washington, D.C. Dulles Intl
4h 59m1 stop Toronto Island
Porter Airlines Logo
11:20 a.m. - 4:38 p.m.IAD  Washington, D.C. Dulles Intl-YOW Ottawa
5h 18m1 stop Toronto Island
C$ 491Porter Airlines
Thu, 17 Dec - Tue, 22 Dec

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United Airlines flights from Ottawa to Washington, D.C. Dulles Intl Airport

Our best United Airlines deals on Ottawa to Washington, D.C. Dulles Intl Airport flight tickets
United Airlines
30 Nov
YOW2:00 p.m.Ottawa
1h 53m
IAD3:53 p.m.Washington, D.C. Dulles Intl
2 Dec
IAD8:35 a.m.Washington, D.C. Dulles Intl
4h 36m
1 stop
YOW1:11 p.m.Ottawa
C$ 449
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$ 478
United Airlines
2 Dec
YOW2:00 p.m.Ottawa
1h 53m
IAD3:53 p.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$ 512

Porter Airlines flights from Ottawa to Washington, D.C. Dulles Intl Airport

Our best Porter Airlines deals on Ottawa to Washington, D.C. Dulles Intl Airport flight tickets
Porter Airlines
23 Nov
YOW12:15 p.m.Ottawa
5h 29m
1 stop
IAD5:44 p.m.Washington, D.C. Dulles Intl
30 Nov
IAD11:20 a.m.Washington, D.C. Dulles Intl
5h 17m
1 stop
YOW4:37 p.m.Ottawa
C$ 445
Porter Airlines
17 Dec
YOW12:15 p.m.Ottawa
4h 59m
1 stop
IAD5:14 p.m.Washington, D.C. Dulles Intl
22 Dec
IAD11:20 a.m.Washington, D.C. Dulles Intl
5h 18m
1 stop
YOW4:38 p.m.Ottawa
C$ 491
Porter Airlines
23 Nov
YOW12:15 p.m.Ottawa
5h 29m
1 stop
IAD5:44 p.m.Washington, D.C. Dulles Intl
9 Dec
IAD11:20 a.m.Washington, D.C. Dulles Intl
5h 18m
1 stop
YOW4:38 p.m.Ottawa
C$ 505

momondo Fare Finder

 
Use the filters below to find and compare flights from Ottawa to Washington, D.C. Dulles Intl Airport 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 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$ 443

OttawaWashington, D.C.

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

YOWIAD

Ottawa

Mon 23/11

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

1 stop5h 29m

Washington, D.C. Dulles Intl

Mon 30/11

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

1 stop5h 17m

C$ 445

OttawaWashington, D.C.

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

YOWIAD

Ottawa

Tue 8/12

7:00 a.m.-9:50 p.m.

1 stop14h 50m

Washington, D.C. Dulles Intl

Tue 15/12

11:20 a.m.-7:58 a.m.

1 stop20h 38m

C$ 448

OttawaWashington, D.C.

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

YOWIAD

Ottawa

Mon 30/11

2:00 p.m.-3:53 p.m.

Nonstop1h 53m

Washington, D.C. Dulles Intl

Wed 2/12

8:35 a.m.-1:11 p.m.

1 stop4h 36m

C$ 449
Quickest round-trip

OttawaWashington, D.C.

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

YOWIAD

Ottawa

Mon 30/11

2:00 p.m.-3:53 p.m.

Nonstop1h 53m

Washington, D.C. Dulles Intl

Wed 2/12

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

Nonstop1h 48m

C$ 449

OttawaWashington, D.C.

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

YOWIAD

Ottawa

Thu 3/12

12:05 p.m.-4:47 p.m.

1 stop4h 42m

Washington, D.C. Dulles Intl

Sun 6/12

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

1 stop4h 32m

C$ 452

OttawaWashington, D.C.

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

YOWIAD

Ottawa

Tue 8/12

7:00 a.m.-9:50 p.m.

1 stop14h 50m

Washington, D.C. Dulles Intl

Tue 15/12

11:20 a.m.-7:58 a.m.

1 stop20h 38m

C$ 452

OttawaWashington, D.C.

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

YOWIAD

Ottawa

Mon 23/11

12:05 p.m.-4:47 p.m.

1 stop4h 42m

Washington, D.C. Dulles Intl

Mon 30/11

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

1 stop4h 32m

C$ 452

OttawaWashington, D.C.

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

YOWIAD

Ottawa

Fri 13/11

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

1 stop5h 29m

Washington, D.C. Dulles Intl

Sun 15/11

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

1 stop5h 17m

C$ 483

OttawaWashington, D.C.

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

YOWIAD

Ottawa

Thu 17/12

12:15 p.m.-5:14 p.m.

1 stop4h 59m

Washington, D.C. Dulles Intl

Tue 22/12

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

1 stop5h 18m

C$ 491

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. Dulles Intl Airport

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. Dulles Intl Airport?

Prices are currently typical for flights on this route.

Typical prices usually range from C$ 436 to C$ 654.
The lowest price recently found on this route was C$ 441.

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

The cheapest month to fly to Washington, D.C. Dulles Intl Airport from Ottawa is in January. Flight prices, which tend to average around C$ 429, are often lower during this time because this is during the off-season. If you don’t want to visit Washington, D.C. Dulles Intl Airport in January, then you should wait until April to fly from Ottawa, when ticket prices are also cheap, with an average price of C$ 502.

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

According to our data, Wednesday is the cheapest day to fly to Washington, D.C. Dulles Intl Airport from Ottawa. The lowest ticket price found for a Wednesday departure recently was C$ 799. Keep in mind that prices can always vary depending on your route and whether or not you are flying domestic or international. Be sure to avoid booking your departure on a Sunday as prices are generally higher than usual. According to our data, the average ticket price to Washington, D.C. Dulles Intl Airport on Sunday is C$ 969.

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

Our most recent data shows that the best time of day to fly to Washington, D.C. Dulles Intl Airport is in the evening. Flights from Ottawa to Washington, D.C. Dulles Intl Airport during this time can be as low as C$ 793. At noon is when there is more demand to fly to Washington, D.C. Dulles Intl Airport, so prices are often more expensive at around C$ 1,036 per ticket.

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

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

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

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

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

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

As of October 2026, prices for Ottawa to Washington, D.C. Dulles Intl Airport flights are approximately 33% more expensive when compared to flights at the same time last year.

When to book flights from Ottawa to Washington, D.C. Dulles Intl Airport

Are you open to changing your travel dates? Check out the ideal times to fly from Ottawa to Washington, D.C. Dulles Intl Airport 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. Dulles Intl Airport (YOW to IAD) flight deals and tips

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

Best price found

C$ 234

Fastest flight time

1h 53m

Direct flights

Every day
The best one-way flight to Washington, D.C. Dulles Intl Airport from Ottawa in the past 72 hours is C$ 234. The best round-trip flight deal from Ottawa to Washington, D.C. Dulles Intl Airport found on momondo in the last 72 hours is C$ 443.
The fastest flight from Ottawa to Washington, D.C. Dulles Intl Airport takes 1h 53m
Direct flights go from Ottawa to Washington, D.C. Dulles Intl Airport every day.
Search flight deals

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

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

    Washington, D.C. Dulles Intl is 732.9 km away from Ottawa. 1h 53m is a normal flight duration for this route.

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

    Prices for flights from Ottawa Airport to Washington, D.C. Dulles Intl Airport refresh daily.

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

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

    The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Ottawa Airport to Washington, D.C. Dulles Intl Airport.

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

    The travel and health documents you'll need for your trip to Washington, D.C. Dulles Intl Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Washington, D.C. Dulles Intl Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

  • What is the most popular plane model from Ottawa to Washington, D.C. Dulles Intl Airport?

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

Best airlines flying from Ottawa to Washington, D.C. Dulles Intl Airport

Compare and see reviews for airlines that fly from Ottawa to Washington, D.C. Dulles Intl Airport with momondo
Airline
Rating
Free Cancellation
Price
Porter AirlinesPriceFrom C$ 320Free CancellationRating
8.0
467 reviews
Search Porter Airlines flights
United AirlinesPriceFrom C$ 364Free CancellationRating
7.3
10,444 reviews
Search United Airlines flights
Air CanadaPriceFrom C$ 482Free CancellationRating
7.1
11,822 reviews
Search Air Canada flights

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

    United Airlines operates around 10 flights from Ottawa to Washington, D.C. Dulles Intl Airport every week. The average price of these flights found in the last 72 hours has been C$ 579, but momondo users have found United Airlines deals from Ottawa to Washington, D.C. Dulles Intl Airport from as low as C$ 364 round-trip. United Airlines has been scored 7.3/10 in 10,444 reviews.

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

    Air Canada is also a popular choice for this route. Air Canada flight deals for Ottawa to Washington, D.C. Dulles Intl Airport start from as low as C$ 482 round-trip, depending on your selected dates, with average Air Canada deals seen on momondo around C$ 663. Air Canada operates 12 flights to Washington, D.C. Dulles Intl Airport from Ottawa in an average week. Users have rated it 7.1/10 across 11,822 reviews.

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
Sterling
Gaithersburg
Chantilly
Arlington
Towson
Gettysburg
Fredericksburg
Ashburn
Woodbridge
Herndon
Silver Spring
National Harbor
Fairfax
McLean
Leesburg
Falls Church
Alexandria
Easton
Rockville

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 enables you to select and highlight flights to Washington, D.C. from Ottawa with this policy.

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?

Price alerts on flights to Washington, D.C. from Ottawa are quick and easy to set up on momondo. Simply perform a search and select the price alert feature. It is as simple as that.

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