Which airlines fly to Washington, D.C. Dulles Intl Airport?

Air Canada, Porter Airlines and United Airlines are the top three most popular airlines that fly to Washington, D.C. Dulles Intl Airport from Ottawa according to our data. Air Canada is the first choice among our users, with 41% of people opting to fly with this airline when travelling to Washington, D.C. Dulles Intl Airport. Keep in mind that there are 3 different airlines that fly to Washington, D.C. Dulles Intl Airport on a routine basis, so you have a few additional options to choose from.

How many flights depart from Ottawa to Washington, D.C. Dulles Intl Airport on average per day?

As of April 2026, 5 flights take off from Ottawa and land in Washington, D.C. Dulles Intl Airport each day. The most common flight departure time for this route is 10:00a.m., with 49% of daily flights taking off at noon.

How many flights depart from Ottawa to Washington, D.C. Dulles Intl Airport on average per week?

The number of flights available between Ottawa and Washington, D.C. Dulles Intl Airport is 40 per week as of April 2026. The most frequent departure day is Mon, with 20% of weekly flights leaving on this day.

What is the cheapest airline that flies from Ottawa to Washington, D.C. Dulles Intl?

Porter Airlines and United Airlines are the most popular carriers operating from Ottawa to Washington, D.C. Dulles Intl

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?

As of April 2026, there are 3 operators available to choose from 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.

C$ 247 Cheap Flights from Ottawa to Washington, D.C. Dulles Intl Airport in 2026

Q: What is the typical price of a round-trip flight between Ottawa and Washington, D.C. Dulles Intl Airport?

Prices are currently low for flights on this route. Typical prices usually range from C$ 590 to C$ 453. The lowest price recently found on this route was C$ 425.

1 adult

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from Ottawa to Washington, D.C.

Round-trip

One-way

Last minute

Direct

Cheap round-trip flights

Enter your travel dates to find the best prices.

11:00 a.m. - 3:21 p.m.

YOW

IAD

4h 21m

1 stop

4:05 p.m. - 9:44 p.m.

IAD

YOW

5h 39m

1 stop

C$ 425Porter Airlines

Thu, 28 May - Wed, 3 Jun

11:00 a.m. - 3:21 p.m.

YOW

IAD

4h 21m

1 stop

4:05 p.m. - 9:44 p.m.

IAD

YOW

5h 39m

1 stop

C$ 429Porter Airlines

Thu, 21 May - Thu, 28 May

11:00 a.m. - 3:21 p.m.

YOW

IAD

4h 21m

1 stop

11:30 a.m. - 5:54 p.m.

IAD

YOW

6h 24m

1 stop

C$ 433Porter Airlines

Wed, 17 Jun - Mon, 22 Jun

11:00 a.m. - 3:21 p.m.

YOW

IAD

4h 21m

1 stop

11:30 a.m. - 2:54 p.m.

IAD

YOW

3h 24m

1 stop

C$ 438Porter Airlines

Fri, 29 May - Thu, 4 Jun

11:00 a.m. - 3:16 p.m.

YOW

IAD

4h 16m

1 stop

11:30 a.m. - 5:54 p.m.

IAD

YOW

6h 24m

1 stop

C$ 440Porter Airlines

Thu, 18 Jun - Tue, 30 Jun

11:00 a.m. - 3:21 p.m.

YOW

IAD

4h 21m

1 stop

4:05 p.m. - 8:04 p.m.

IAD

YOW

3h 59m

1 stop

C$ 443Porter Airlines

Mon, 8 Jun - Mon, 15 Jun

11:00 a.m. - 3:21 p.m.

YOW

IAD

4h 21m

1 stop

4:05 p.m. - 8:04 p.m.

IAD

YOW

3h 59m

1 stop

C$ 452Porter Airlines

Sun, 7 Jun - Fri, 12 Jun

6:05 a.m. - 11:28 a.m.

YOW

IAD

5h 23m

1 stop

10:10 p.m. - 11:54 p.m.

IAD

YOW

1h 44mdirect

C$ 463Lufthansa

Fri, 19 Jun - Fri, 19 Jun

11:00 a.m. - 3:21 p.m.

YOW

IAD

4h 21m

1 stop

4:00 p.m. - 8:04 p.m.

IAD

YOW

4h 04m

1 stop

C$ 464Porter Airlines

Wed, 17 Jun - Fri, 19 Jun

11:00 a.m. - 3:16 p.m.

YOW

IAD

4h 16m

1 stop

4:00 p.m. - 8:04 p.m.

IAD

YOW

4h 04m

1 stop

C$ 467Porter Airlines

Fri, 26 Jun - Sun, 28 Jun

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Air Canada flights from Ottawa to Washington, D.C. Dulles Intl Airport

Our best Air Canada deals on Ottawa to Washington, D.C. Dulles Intl Airport flight tickets

Air Canada

3 Jun

YOW9:55 a.m.Ottawa

6h 17m

1 stop

IAD4:12 p.m.Washington, D.C. Dulles Intl

6 Jun

IAD5:15 p.m.Washington, D.C. Dulles Intl

4h 36m

1 stop

YOW9:51 p.m.Ottawa

C$ 522

Air Canada

16 Jun

YOW9:55 a.m.Ottawa

6h 17m

1 stop

IAD4:12 p.m.Washington, D.C. Dulles Intl

22 Jun

IAD5:15 p.m.Washington, D.C. Dulles Intl

4h 37m

1 stop

YOW9:52 p.m.Ottawa

C$ 542

Air Canada

16 Jun

YOW9:10 a.m.Ottawa

5h 53m

1 stop

IAD3:03 p.m.Washington, D.C. Dulles Intl

16 Jun

IAD5:15 p.m.Washington, D.C. Dulles Intl

4h 36m

1 stop

YOW9:51 p.m.Ottawa

C$ 546

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

16 Jun

YOW6:00 a.m.Ottawa

1h 44m

IAD7:44 a.m.Washington, D.C. Dulles Intl

16 Jun

IAD12:35 p.m.Washington, D.C. Dulles Intl

4h 03m

1 stop

YOW4:38 p.m.Ottawa

C$ 479

United Airlines

17 Jun

YOW7:30 p.m.Ottawa

1h 43m

IAD9:13 p.m.Washington, D.C. Dulles Intl

18 Jun

IAD6:33 a.m.Washington, D.C. Dulles Intl

15h 32m

1 stop

YOW10:05 p.m.Ottawa

C$ 488

United Airlines

21 Jun

YOW6:05 a.m.Ottawa

5h 43m

2 stops

IAD11:48 a.m.Washington, D.C. Dulles Intl

21 Jun

IAD10:10 p.m.Washington, D.C. Dulles Intl

1h 44m

YOW11:54 p.m.Ottawa

C$ 555

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 - IAD

YOWIAD

Ottawa

Thu 28/5

11:00 a.m.-3:21 p.m.

1 stop4h 21m

Washington, D.C. Dulles Intl

Wed 3/6

4:05 p.m.-9:44 p.m.

1 stop5h 39m

C$ 425

OttawaWashington, D.C.

YOW - IAD

YOWIAD

Ottawa

Thu 21/5

11:00 a.m.-3:21 p.m.

1 stop4h 21m

Washington, D.C. Dulles Intl

Thu 28/5

4:05 p.m.-9:44 p.m.

1 stop5h 39m

C$ 429

OttawaWashington, D.C.

YOW - IAD

YOWIAD

Ottawa

Wed 17/6

11:00 a.m.-3:21 p.m.

1 stop4h 21m

Washington, D.C. Dulles Intl

Mon 22/6

11:30 a.m.-5:54 p.m.

1 stop6h 24m

C$ 433

OttawaWashington, D.C.

YOW - IAD

YOWIAD

Ottawa

Fri 29/5

11:00 a.m.-3:21 p.m.

1 stop4h 21m

Washington, D.C. Dulles Intl

Thu 4/6

11:30 a.m.-2:54 p.m.

1 stop3h 24m

C$ 438

OttawaWashington, D.C.

YOW - IAD

YOWIAD

Ottawa

Thu 18/6

11:00 a.m.-3:16 p.m.

1 stop4h 16m

Washington, D.C. Dulles Intl

Tue 30/6

11:30 a.m.-5:54 p.m.

1 stop6h 24m

C$ 440

OttawaWashington, D.C.

YOW - IAD

YOWIAD

Ottawa

Mon 8/6

11:00 a.m.-3:21 p.m.

1 stop4h 21m

Washington, D.C. Dulles Intl

Mon 15/6

4:05 p.m.-8:04 p.m.

1 stop3h 59m

C$ 443

OttawaWashington, D.C.

YOW - IAD

YOWIAD

Ottawa

Sun 7/6

11:00 a.m.-3:21 p.m.

1 stop4h 21m

Washington, D.C. Dulles Intl

Fri 12/6

4:05 p.m.-8:04 p.m.

1 stop3h 59m

C$ 452

Quickest round-trip

OttawaWashington, D.C.

YOW - IAD

YOWIAD

Ottawa

Fri 19/6

6:05 a.m.-11:28 a.m.

1 stop5h 23m

Washington, D.C. Dulles Intl

Fri 19/6

10:10 p.m.-11:54 p.m.

Nonstop1h 44m

C$ 463

OttawaWashington, D.C.

YOW - IAD

YOWIAD

Ottawa

Wed 17/6

11:00 a.m.-3:21 p.m.

1 stop4h 21m

Washington, D.C. Dulles Intl

Fri 19/6

4:00 p.m.-8:04 p.m.

1 stop4h 04m

C$ 464

OttawaWashington, D.C.

YOW - IAD

YOWIAD

Ottawa

Fri 26/6

11:00 a.m.-3:16 p.m.

1 stop4h 16m

Washington, D.C. Dulles Intl

Sun 28/6

4:00 p.m.-8:04 p.m.

1 stop4h 04m

C$ 467

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first

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

Prices

Airlines

Other information

What is the typical price of a round-trip flight between Ottawa and Washington, D.C. Dulles Intl Airport?

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$ 418, 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 July to fly from Ottawa, when ticket prices are also cheap, with an average price of C$ 419.

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

According to our data, Saturday is the cheapest day to fly to Washington, D.C. Dulles Intl Airport from Ottawa. The lowest ticket price found for a Saturday departure recently was C$ 802. 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$ 917.

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 morning. Flights from Ottawa to Washington, D.C. Dulles Intl Airport during this time can be as low as C$ 767. 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$ 1,100 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

Can stopping save me money on Ottawa to Washington, D.C. Dulles Intl Airport flights?

You could potentially save up to 22% 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 April 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$ 344
Fastest flight time	1h 43m
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$ 344. 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$ 570.

The fastest flight from Ottawa to Washington, D.C. Dulles Intl Airport takes 1h 43m

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 43m 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?
As of April 2026, there are 3 operators available to choose from 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?
momondo data reveals that the most frequently booked plane model on the route from Ottawa to Washington, D.C. Dulles Intl Airport is Embraer 175 (Enhanced Winglets), representing 25.05% of all bookings. The subsequent popular models are Canadair (Bombardier) Regional Jet CRJ-550 at 24.50%, Embraer 195 E2 at 19.46%, and Canadair (Bombardier) Regional Jet 900 at 10.45%.
What is the most popular airline from Ottawa to Washington, D.C. Dulles Intl Airport?
Based on momondo bookings for this flight route, the most popular airline on flight routes from Ottawa to Washington, D.C. Dulles Intl Airport is Air Canada (38% of total bookings). The next most popular airlines are Porter Airlines (37%) and United Airlines (25%).

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 Airlines	PriceFrom C$ 328	Free Cancellation	Rating 8.0 435 reviews	Search Porter Airlines flights
United Airlines	PriceFrom C$ 355	Free Cancellation	Rating 7.4 9,677 reviews	Search United Airlines flights
Air Canada	PriceFrom C$ 478	Free Cancellation	Rating 7.1 10,982 reviews	Search Air Canada 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$ 564, but momondo users have found United Airlines deals from Ottawa to Washington, D.C. Dulles Intl Airport from as low as C$ 355 round-trip. United Airlines has been scored 7.4/10 in 9,677 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$ 478 round-trip, depending on your selected dates, with average Air Canada deals seen on momondo around C$ 635. Air Canada operates 24 flights to Washington, D.C. Dulles Intl Airport from Ottawa in an average week. Users have rated it 7.1/10 across 10,982 reviews.

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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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Cheap flights from Ottawa to Washington, D.C. from C$ 247

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 29/5. 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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Air Canada flights from Ottawa to Washington, D.C. Dulles Intl Airport

Our best Air Canada deals on Ottawa to Washington, D.C. Dulles Intl Airport flight tickets

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

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Use the filters below to find and compare flights from Ottawa to Washington, D.C. Dulles Intl Airport that are best for you.

See travel insights to Washington, D.C. from

How to get the cheapest flight ticket from Ottawa to Washington, D.C. Dulles Intl Airport

What is the typical price of a round-trip flight between Ottawa and Washington, D.C. Dulles Intl Airport?

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

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

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

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

Can stopping save me money on Ottawa to Washington, D.C. Dulles Intl Airport flights?

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

What is the cheapest airline that flies from Ottawa to Washington, D.C. Dulles Intl?

Which airlines fly to Washington, D.C. Dulles Intl Airport?

How many flights depart from Ottawa to Washington, D.C. Dulles Intl Airport on average per day?

How many flights depart from Ottawa to Washington, D.C. Dulles Intl Airport on average per week?

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

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

Fastest flight time

Direct flights

Frequently asked questions about flying 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

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

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

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