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

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

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 38% 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 July 2026, 7 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 6:00a.m., with 50% 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 55 per week as of July 2026. The most frequent departure day is Mon, with 15% of weekly flights leaving on this day.

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 July 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$ 238 Cheap Flights from Ottawa to Washington, D.C. Dulles Intl Airport in 2026

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.

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

YOW

IAD

4h 30m

1 stop

3:50 p.m. - 9:42 p.m.

IAD

YOW

5h 52m

1 stop

C$ 441Porter Airlines

Fri, 16 Oct - Mon, 19 Oct

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

YOW

IAD

4h 30m

1 stop

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

IAD

YOW

4h 12m

1 stop

C$ 441Porter Airlines

Fri, 2 Oct - Sun, 4 Oct

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

YOW

IAD

4h 30m

1 stop

11:25 a.m. - 7:07 p.m.

IAD

YOW

7h 42m

1 stop

C$ 444Porter Airlines

Mon, 21 Sep - Sat, 26 Sep

12:15 p.m. - 4:38 p.m.

YOW

IAD

4h 23m

1 stop

5:15 p.m. - 9:52 p.m.

IAD

YOW

4h 37m

1 stop

C$ 462Air Canada

Fri, 2 Oct - Sun, 4 Oct

12:15 p.m. - 4:38 p.m.

YOW

IAD

4h 23m

1 stop

5:15 p.m. - 9:52 p.m.

IAD

YOW

4h 37m

1 stop

C$ 462Air Canada

Wed, 30 Sep - Wed, 7 Oct

12:15 p.m. - 4:38 p.m.

YOW

IAD

4h 23m

1 stop

5:15 p.m. - 9:52 p.m.

IAD

YOW

4h 37m

1 stop

C$ 462Air Canada

Tue, 29 Sep - Sun, 4 Oct

2:52 p.m. - 4:35 p.m.

YOW

IAD

1h 43mdirect

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

IAD

YOW

1h 44mdirect

C$ 489United Airlines

Wed, 2 Sep - Mon, 7 Sep

6:25 p.m. - 10:45 a.m.

YOW

IAD

16h 20m

1 stop

3:50 p.m. - 8:05 a.m.

IAD

YOW

16h 15m

1 stop

C$ 489Multiple Airlines

Fri, 2 Oct - Mon, 5 Oct

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

YOW

IAD

8h 15m

1 stop

11:25 a.m. - 8:05 a.m.

IAD

YOW

20h 40m

1 stop

C$ 490Multiple Airlines

Mon, 28 Sep - Tue, 6 Oct

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

YOW

IAD

1h 44mdirect

6:45 a.m. - 4:38 p.m.

IAD

YOW

9h 53m

1 stop

C$ 494United Airlines

Sun, 4 Oct - Mon, 5 Oct

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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

29 Sep

YOW12:15 p.m.Ottawa

4h 23m

1 stop

IAD4:38 p.m.Washington, D.C. Dulles Intl

4 Oct

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

4h 37m

1 stop

YOW9:52 p.m.Ottawa

C$ 462

Air Canada

12 Sep

YOW12:15 p.m.Ottawa

4h 23m

1 stop

IAD4:38 p.m.Washington, D.C. Dulles Intl

15 Sep

IAD5:20 p.m.Washington, D.C. Dulles Intl

4h 32m

1 stop

YOW9:52 p.m.Ottawa

C$ 503

Air Canada

29 Sep

YOW12:15 p.m.Ottawa

4h 23m

1 stop

IAD4:38 p.m.Washington, D.C. Dulles Intl

7 Oct

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

4h 37m

1 stop

YOW9:52 p.m.Ottawa

C$ 515

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

2 Oct

YOW10:40 a.m.Ottawa

4h 30m

1 stop

IAD3:10 p.m.Washington, D.C. Dulles Intl

4 Oct

IAD3:50 p.m.Washington, D.C. Dulles Intl

4h 12m

1 stop

YOW8:02 p.m.Ottawa

C$ 441

Porter Airlines

21 Sep

YOW10:40 a.m.Ottawa

4h 30m

1 stop

IAD3:10 p.m.Washington, D.C. Dulles Intl

26 Sep

IAD11:25 a.m.Washington, D.C. Dulles Intl

7h 42m

1 stop

YOW7:07 p.m.Ottawa

C$ 444

Porter Airlines

20 Aug

YOW10:40 a.m.Ottawa

4h 30m

1 stop

IAD3:10 p.m.Washington, D.C. Dulles Intl

27 Aug

IAD3:50 p.m.Washington, D.C. Dulles Intl

4h 14m

1 stop

YOW8:04 p.m.Ottawa

C$ 465

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

Fri 16/10

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

1 stop4h 30m

Washington, D.C. Dulles Intl

Mon 19/10

3:50 p.m.-9:42 p.m.

1 stop5h 52m

C$ 441

OttawaWashington, D.C.

YOW - IAD

YOWIAD

Ottawa

Fri 2/10

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

1 stop4h 30m

Washington, D.C. Dulles Intl

Sun 4/10

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

1 stop4h 12m

C$ 441

OttawaWashington, D.C.

YOW - IAD

YOWIAD

Ottawa

Mon 21/9

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

1 stop4h 30m

Washington, D.C. Dulles Intl

Sat 26/9

11:25 a.m.-7:07 p.m.

1 stop7h 42m

C$ 444

OttawaWashington, D.C.

YOW - IAD

YOWIAD

Ottawa

Fri 2/10

12:15 p.m.-4:38 p.m.

1 stop4h 23m

Washington, D.C. Dulles Intl

Sun 4/10

5:15 p.m.-9:52 p.m.

1 stop4h 37m

C$ 462

OttawaWashington, D.C.

YOW - IAD

YOWIAD

Ottawa

Wed 30/9

12:15 p.m.-4:38 p.m.

1 stop4h 23m

Washington, D.C. Dulles Intl

Wed 7/10

5:15 p.m.-9:52 p.m.

1 stop4h 37m

C$ 462

OttawaWashington, D.C.

YOW - IAD

YOWIAD

Ottawa

Tue 29/9

12:15 p.m.-4:38 p.m.

1 stop4h 23m

Washington, D.C. Dulles Intl

Sun 4/10

5:15 p.m.-9:52 p.m.

1 stop4h 37m

C$ 462

Quickest round-trip

OttawaWashington, D.C.

YOW - IAD

YOWIAD

Ottawa

Wed 2/9

2:52 p.m.-4:35 p.m.

Nonstop1h 43m

Washington, D.C. Dulles Intl

Mon 7/9

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

Nonstop1h 44m

C$ 489

OttawaWashington, D.C.

YOW - IAD

YOWIAD

Ottawa

Fri 2/10

6:25 p.m.-10:45 a.m.

1 stop16h 20m

Washington, D.C. Dulles Intl

Mon 5/10

3:50 p.m.-8:05 a.m.

1 stop16h 15m

C$ 489

OttawaWashington, D.C.

YOW - IAD

YOWIAD

Ottawa

Mon 28/9

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

1 stop8h 15m

Washington, D.C. Dulles Intl

Tue 6/10

11:25 a.m.-8:05 a.m.

1 stop20h 40m

C$ 490

OttawaWashington, D.C.

YOW - IAD

YOWIAD

Ottawa

Sun 4/10

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

Nonstop1h 44m

Washington, D.C. Dulles Intl

Mon 5/10

6:45 a.m.-4:38 p.m.

1 stop9h 53m

C$ 494

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?

Prices are currently low for flights on this route.

Typical prices usually range from C$ 568 to C$ 794.
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$ 431, 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 October to fly from Ottawa, when ticket prices are also cheap, with an average price of C$ 503.

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$ 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$ 940.

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$ 791. 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$ 1,082 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 17% 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 July 2026, prices for Ottawa to Washington, D.C. Dulles Intl Airport flights are approximately 12% 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$ 330
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$ 330. 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$ 696.

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 July 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 32.46% of all bookings. The subsequent popular models are Canadair (Bombardier) Regional Jet CRJ-550 at 32.23%, Embraer 195 E2 at 10.19%, and Canadair (Bombardier) Regional Jet 900 at 5.21%.
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 (37% of total bookings). The next most popular airlines are Porter Airlines (34%) and United Airlines (29%).

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$ 322	Free Cancellation	Rating 8.0 449 reviews	Search Porter Airlines flights
United Airlines	PriceFrom C$ 365	Free Cancellation	Rating 7.4 10,046 reviews	Search United Airlines flights
Air Canada	PriceFrom C$ 495	Free Cancellation	Rating 7.1 11,407 reviews	Search Air Canada flights

United Airlines Flights From Ottawa to Washington, D.C. Dulles Intl Airport
United Airlines operates around 27 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$ 581, but momondo users have found United Airlines deals from Ottawa to Washington, D.C. Dulles Intl Airport from as low as C$ 365 round-trip. United Airlines has been scored 7.4/10 in 10,046 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$ 495 round-trip, depending on your selected dates, with average Air Canada deals seen on momondo around C$ 666. Air Canada operates 28 flights to Washington, D.C. Dulles Intl Airport from Ottawa in an average week. Users have rated it 7.1/10 across 11,406 reviews.

Sterling

Alexandria

Gettysburg

Chantilly

Arlington

Gaithersburg

Fairfax

National Harbor

Winchester

Fredericksburg

Herndon

Ashburn

Manassas

Woodbridge

Silver Spring

Leesburg

Falls Church

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 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$ 238

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 28/8. 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

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

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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?

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

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

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

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