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Cheap flights from Ottawa to Washington, D.C. from C$ 202

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 16/2. 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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Cheap round-trip flights

Enter your travel dates to find the best prices.
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$ 376Porter Airlines
Mon, 26 Jan - Fri, 6 Feb
Multiple Airlines Logo
4:20 p.m. - 7:55 a.m.
YOW
-
IAD
15h 35m1 stop
Multiple Airlines Logo
1:31 p.m. - 5:13 p.m.
IAD
-
YOW
27h 42m1 stop
C$ 380Multiple Airlines
Thu, 8 Jan - Mon, 26 Jan
Multiple Airlines Logo
4:20 p.m. - 7:55 a.m.
YOW
-
IAD
15h 35m1 stop
Multiple Airlines Logo
5:33 p.m. - 5:13 p.m.
IAD
-
YOW
23h 40m2 stops
C$ 410Multiple Airlines
Thu, 8 Jan - Mon, 26 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$ 412Porter Airlines
Mon, 26 Jan - Thu, 5 Feb
Porter Airlines Logo
1:20 p.m. - 5:14 p.m.
YOW
-
IAD
3h 54m1 stop
Porter Airlines Logo
1:45 p.m. - 5:29 p.m.
IAD
-
YOW
3h 44m1 stop
C$ 414Porter Airlines
Fri, 27 Feb - Sat, 7 Mar
Porter Airlines Logo
7:00 a.m. - 10:19 a.m.
YOW
-
IAD
3h 19m1 stop
Porter Airlines Logo
11:35 a.m. - 3:04 p.m.
IAD
-
YOW
3h 29m1 stop
C$ 416Porter Airlines
Thu, 8 Jan - Sun, 11 Jan
Porter Airlines Logo
1:20 p.m. - 5:14 p.m.
YOW
-
IAD
3h 54m1 stop
Porter Airlines Logo
11:40 a.m. - 5:29 p.m.
IAD
-
YOW
5h 49m1 stop
C$ 432Porter Airlines
Fri, 20 Feb - Mon, 2 Mar
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$ 438Porter Airlines
Thu, 9 Apr - Tue, 14 Apr
Multiple Airlines Logo
9:40 a.m. - 11:43 a.m.
YOW
-
IAD
26h 03m2 stops
Multiple Airlines Logo
11:35 a.m. - 3:04 p.m.
IAD
-
YOW
3h 29m1 stop
C$ 442Multiple Airlines
Mon, 12 Jan - Fri, 16 Jan
Multiple Airlines Logo
9:40 a.m. - 6:24 p.m.
YOW
-
IAD
8h 44m1 stop
Multiple Airlines Logo
11:00 a.m. - 4:03 p.m.
IAD
-
YOW
29h 03m2 stops
C$ 468Multiple Airlines
Thu, 15 Jan - Tue, 20 Jan

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
26 Jan
YOW7:27 p.m.Ottawa
1h 58m
IAD9:25 p.m.Washington, D.C. Dulles Intl
5 Feb
IAD8:29 a.m.Washington, D.C. Dulles Intl
5h 03m
1 stop
YOW1:32 p.m.Ottawa
C$ 548
Find similar
United Airlines
11 Jan
YOW7:27 p.m.Ottawa
1h 58m
IAD9:25 p.m.Washington, D.C. Dulles Intl
18 Jan
IAD8:17 a.m.Washington, D.C. Dulles Intl
5h 15m
1 stop
YOW1:32 p.m.Ottawa
C$ 574
Find similar
United Airlines
11 Jan
YOW5:55 p.m.Ottawa
5h 23m
1 stop
IAD11:18 p.m.Washington, D.C. Dulles Intl
18 Jan
IAD8:17 a.m.Washington, D.C. Dulles Intl
5h 15m
1 stop
YOW1:32 p.m.Ottawa
C$ 582
Find similar

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
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
5h 49m
1 stop
YOW5:29 p.m.Ottawa
C$ 376
Find similar
Porter Airlines
12 Jan
YOW7:00 a.m.Ottawa
3h 19m
1 stop
IAD10:19 a.m.Washington, D.C. Dulles Intl
19 Jan
IAD11:35 a.m.Washington, D.C. Dulles Intl
5h 54m
1 stop
YOW5:29 p.m.Ottawa
C$ 386
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$ 412
Find similar

momondo Fare Finder

 
Customize your flight search to find flights from Ottawa to Washington, D.C. Dulles Intl Airport 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 15 December 2025.
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

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$ 376

OttawaWashington, D.C.

YOW - IAD

YOWIAD

Ottawa

Thu 8/1

4:20 p.m.-7:55 a.m.

1 stop15h 35m

Washington, D.C. Dulles Intl

Mon 26/1

1:31 p.m.-5:13 p.m.

1 stop27h 42m

C$ 380

OttawaWashington, D.C.

YOW - IAD

YOWIAD

Ottawa

Thu 8/1

4:20 p.m.-7:55 a.m.

1 stop15h 35m

Washington, D.C. Dulles Intl

Mon 26/1

5:33 p.m.-5:13 p.m.

2 stops23h 40m

C$ 410

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

Thu 5/2

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

1 stop3h 24m

C$ 412

OttawaWashington, D.C.

YOW - IAD

YOWIAD

Ottawa

Fri 27/2

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

1 stop3h 54m

Washington, D.C. Dulles Intl

Sat 7/3

1:45 p.m.-5:29 p.m.

1 stop3h 44m

C$ 414

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

Sun 11/1

11:35 a.m.-3:04 p.m.

1 stop3h 29m

C$ 416

OttawaWashington, D.C.

YOW - IAD

YOWIAD

Ottawa

Fri 20/2

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

1 stop3h 54m

Washington, D.C. Dulles Intl

Mon 2/3

11:40 a.m.-5:29 p.m.

1 stop5h 49m

C$ 432

OttawaWashington, D.C.

YOW - IAD

YOWIAD

Ottawa

Thu 9/4

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

1 stop3h 54m

Washington, D.C. Dulles Intl

Tue 14/4

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

1 stop3h 59m

C$ 438

OttawaWashington, D.C.

YOW - IAD

YOWIAD

Ottawa

Mon 12/1

9:40 a.m.-11:43 a.m.

2 stops26h 03m

Washington, D.C. Dulles Intl

Fri 16/1

11:35 a.m.-3:04 p.m.

1 stop3h 29m

C$ 442

OttawaWashington, D.C.

YOW - IAD

YOWIAD

Ottawa

Thu 15/1

9:40 a.m.-6:24 p.m.

1 stop8h 44m

Washington, D.C. Dulles Intl

Tue 20/1

11:00 a.m.-4:03 p.m.

2 stops29h 03m

C$ 468

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. 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 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 April. Flight prices, which tend to average around C$ 428, 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 April, then you should wait until July to fly from Ottawa, when ticket prices are also cheap, with an average price of C$ 436.

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

According to our data, Friday is the cheapest day to fly to Washington, D.C. Dulles Intl Airport from Ottawa. The lowest ticket price found for a Friday departure recently was C$ 875. 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 Thursday as prices are generally higher than usual. According to our data, the average ticket price to Washington, D.C. Dulles Intl Airport on Thursday is C$ 1,031.

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 afternoon. Flights from Ottawa to Washington, D.C. Dulles Intl Airport during this time can be as low as C$ 434. 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$ 1,114 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 flights?

There are 4 cabin classes available to choose from on Ottawa to Washington, D.C. Dulles Intl 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 28% 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 December 2025, 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$ 345

Fastest flight time

1h 53m

Direct flights

Mon, Tue, Thu, Fri, Sat and Sun
The best one-way flight to Washington, D.C. Dulles Intl Airport from Ottawa in the past 72 hours is C$ 345. 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$ 531.
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 on Monday, Tuesday, Thursday, Friday, Saturday and Sunday. There are no airlines offering direct flights.
Search flight deals

  • 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$ 356Free CancellationRating
8.0
399 reviews
Search Porter Airlines flights
Air CanadaPriceFrom C$ 365Free CancellationRating
7.1
10,525 reviews
Search Air Canada flights
United AirlinesPriceFrom C$ 435Free CancellationRating
7.4
9,092 reviews
Search United Airlines flights

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

    United Airlines operates around 16 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$ 632, but momondo users have found United Airlines deals from Ottawa to Washington, D.C. Dulles Intl Airport from as low as C$ 435 round-trip. United Airlines has been scored 7.4/10 in 9,092 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$ 365 round-trip, depending on your selected dates, with average Air Canada deals seen on momondo around C$ 566. Air Canada operates 18 flights to Washington, D.C. Dulles Intl Airport from Ottawa in an average week. Users have rated it 7.1/10 across 10,525 reviews.

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
Chantilly
Arlington
Capitol Heights
Winchester
Leesburg
Manassas
Fredericksburg
Ashburn
Woodbridge
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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