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

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

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

The number of flights available between Ottawa and Washington, D.C. is 10 per day as of March 2026. The most frequent departure time is 9:00a.m., with 37% of daily flights leaving at noon.

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

As of March 2026, there are 70 flights per week flying from Ottawa to Washington, D.C.. The most common day of the week flights depart is Tue, with 16% of flights taking off on this day.

Which airlines fly to Washington, D.C.?

Air Canada, Porter Airlines and United Airlines are the top three most popular airlines that fly to Washington, D.C. from Ottawa according to our data. Air Canada is the first choice among our users, with 60% of people opting to fly with this airline when travelling to Washington, D.C.. Keep in mind that there are 5 different airlines that fly to Washington, D.C. on a routine basis, so you have a few additional options to choose from.

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.?

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

C$ 256 Cheap Flights from Ottawa to Washington, D.C. in 2026

1 adult

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One-way

Last minute

Direct

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1:15 p.m. - 5:14 p.m.

YOW

IAD

3h 59m

1 stop

11:40 a.m. - 4:44 p.m.

IAD

YOW

5h 04m

1 stop

C$ 435Porter Airlines

Fri, 24 Apr - Mon, 27 Apr

6:50 a.m. - 10:54 a.m.

YOW

IAD

4h 04m

1 stop

11:40 a.m. - 5:04 p.m.

IAD

YOW

5h 24m

1 stop

C$ 436Porter Airlines

Thu, 23 Apr - Thu, 30 Apr

6:50 a.m. - 10:54 a.m.

YOW

IAD

4h 04m

1 stop

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

IAD

YOW

5h 49m

1 stop

C$ 439Porter Airlines

Thu, 23 Apr - Mon, 30 Nov

6:50 a.m. - 10:54 a.m.

YOW

IAD

4h 04m

1 stop

11:40 a.m. - 5:04 p.m.

IAD

YOW

5h 24m

1 stop

C$ 440Porter Airlines

Thu, 23 Apr - Thu, 30 Apr

6:45 a.m. - 10:54 a.m.

YOW

IAD

4h 09m

1 stop

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

IAD

YOW

3h 24m

1 stop

C$ 442Porter Airlines

Mon, 27 Apr - Tue, 28 Apr

6:05 a.m. - 4:08 p.m.

YOW

IAD

10h 03m

2 stops

10:07 p.m. - 11:54 p.m.

IAD

YOW

1h 47mdirect

C$ 464United Airlines

Sat, 2 May - Sat, 2 May

4:15 p.m. - 8:43 a.m.

YOW

BWI

16h 28m

1 stop

6:35 a.m. - 4:59 p.m.

BWI

YOW

10h 24m

1 stop

C$ 471Multiple Airlines

Fri, 17 Apr - Mon, 20 Apr

10:25 a.m. - 12:01 p.m.

YOW

DCA

1h 36mdirect

12:45 p.m. - 2:17 p.m.

DCA

YOW

1h 32mdirect

C$ 474Air Canada

Fri, 1 May - Mon, 4 May

5:50 p.m. - 9:55 p.m.

YOW

DCA

4h 05m

1 stop

12:45 p.m. - 2:17 p.m.

DCA

YOW

1h 32mdirect

C$ 475Air Canada

Sat, 2 May - Mon, 4 May

7:00 a.m. - 8:43 a.m.

YOW

BWI

25h 43m

1 stop

5:49 p.m. - 12:15 p.m.

BWI

YOW

42h 26m

2 stops

C$ 492Multiple Airlines

Fri, 24 Apr - Wed, 29 Apr

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

Our best Porter Airlines deals on Ottawa to Washington, D.C. flight tickets

Porter Airlines

24 Apr

YOW1:15 p.m.Ottawa

3h 59m

1 stop

IAD5:14 p.m.Washington, D.C. Dulles Intl

27 Apr

IAD11:40 a.m.Washington, D.C. Dulles Intl

5h 04m

1 stop

YOW4:44 p.m.Ottawa

C$ 435

Porter Airlines

30 Apr

YOW6:50 a.m.Ottawa

4h 04m

1 stop

IAD10:54 a.m.Washington, D.C. Dulles Intl

4 May

IAD4:05 p.m.Washington, D.C. Dulles Intl

3h 59m

1 stop

YOW8:04 p.m.Ottawa

C$ 436

Porter Airlines

23 Apr

YOW6:50 a.m.Ottawa

4h 04m

1 stop

IAD10:54 a.m.Washington, D.C. Dulles Intl

30 Nov

IAD11:40 a.m.Washington, D.C. Dulles Intl

5h 49m

1 stop

YOW5:29 p.m.Ottawa

C$ 439

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

Our best United Airlines deals on Ottawa to Washington, D.C. flight tickets

United Airlines

2 May

YOW6:05 a.m.Ottawa

10h 03m

2 stops

IAD4:08 p.m.Washington, D.C. Dulles Intl

2 May

IAD10:07 p.m.Washington, D.C. Dulles Intl

1h 47m

YOW11:54 p.m.Ottawa

C$ 464

United Airlines

27 Jun

YOW6:00 a.m.Ottawa

1h 44m

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

26 Jul

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

4h 03m

1 stop

YOW4:38 p.m.Ottawa

C$ 492

United Airlines

29 Apr

YOW12:00 p.m.Ottawa

9h 04m

2 stops

IAD9:04 p.m.Washington, D.C. Dulles Intl

30 Apr

IAD8:15 a.m.Washington, D.C. Dulles Intl

1h 48m

YOW10:03 a.m.Ottawa

C$ 504

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

OttawaWashington, D.C.

YOW - IAD

YOWIAD

Ottawa

Fri 24/4

1:15 p.m.-5:14 p.m.

1 stop3h 59m

Washington, D.C. Dulles Intl

Mon 27/4

11:40 a.m.-4:44 p.m.

1 stop5h 04m

C$ 435

OttawaWashington, D.C.

YOW - IAD

YOWIAD

Ottawa

Thu 23/4

6:50 a.m.-10:54 a.m.

1 stop4h 04m

Washington, D.C. Dulles Intl

Thu 30/4

11:40 a.m.-5:04 p.m.

1 stop5h 24m

C$ 436

OttawaWashington, D.C.

YOW - IAD

YOWIAD

Ottawa

Thu 23/4

6:50 a.m.-10:54 a.m.

1 stop4h 04m

Washington, D.C. Dulles Intl

Mon 30/11

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

1 stop5h 49m

C$ 439

OttawaWashington, D.C.

YOW - IAD

YOWIAD

Ottawa

Thu 23/4

6:50 a.m.-10:54 a.m.

1 stop4h 04m

Washington, D.C. Dulles Intl

Thu 30/4

11:40 a.m.-5:04 p.m.

1 stop5h 24m

C$ 440

OttawaWashington, D.C.

YOW - IAD

YOWIAD

Ottawa

Mon 27/4

6:45 a.m.-10:54 a.m.

1 stop4h 09m

Washington, D.C. Dulles Intl

Tue 28/4

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

1 stop3h 24m

C$ 442

OttawaWashington, D.C.

YOW - IAD

YOWIAD

Ottawa

Sat 2/5

6:05 a.m.-4:08 p.m.

2 stops10h 03m

Washington, D.C. Dulles Intl

Sat 2/5

10:07 p.m.-11:54 p.m.

Nonstop1h 47m

C$ 464

OttawaBaltimore

YOW - BWI

YOWBWI

Ottawa

Fri 17/4

4:15 p.m.-8:43 a.m.

1 stop16h 28m

Baltimore/Washington

Mon 20/4

6:35 a.m.-4:59 p.m.

1 stop10h 24m

C$ 471

Quickest round-trip

OttawaWashington, D.C.

YOW - DCA

YOWDCA

Ottawa

Fri 1/5

10:25 a.m.-12:01 p.m.

Nonstop1h 36m

Washington, D.C. Reagan-National

Mon 4/5

12:45 p.m.-2:17 p.m.

Nonstop1h 32m

C$ 474

OttawaWashington, D.C.

YOW - DCA

YOWDCA

Ottawa

Sat 2/5

5:50 p.m.-9:55 p.m.

1 stop4h 05m

Washington, D.C. Reagan-National

Mon 4/5

12:45 p.m.-2:17 p.m.

Nonstop1h 32m

C$ 475

OttawaBaltimore

YOW - BWI

YOWBWI

Ottawa

Fri 24/4

7:00 a.m.-8:43 a.m.

1 stop25h 43m

Baltimore/Washington

Wed 29/4

5:49 p.m.-12:15 p.m.

2 stops42h 26m

C$ 492

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.

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.?

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

If you aren’t able to travel during the month of August, then book flights to Washington, D.C. from Ottawa during April instead. Flights to Washington, D.C. in April, while not as cheap as those in August, still average around C$ 429.

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 Friday. Travellers who choose to depart for Washington, D.C. on a Friday will often find tickets for as low as C$ 839. The most expensive day to fly to Washington, D.C. is Monday, with ticket prices averaging around C$ 983.

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$ 812. 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$ 1,106 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 7% 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 March 2026, prices for Ottawa to Washington, D.C. flights are approximately 14% 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$ 302
Fastest flight time	1h 35m
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$ 302. The best round-trip flight deal from Ottawa to Washington, D.C. found on momondo in the last 72 hours is C$ 545.

The fastest flight from Ottawa to Washington, D.C. takes 1h 35m

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

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 35m.
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.?
As of March 2026, there are 3 operators available to choose from 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.?
momondo data reveals that the most frequently booked plane model on the route from Ottawa to Washington, D.C. is Canadair (Bombardier) Regional Jet CRJ-550, representing 24.90% of all bookings. The subsequent popular models are Embraer 175 (Enhanced Winglets) at 23.37%, Embraer 195 E2 at 18.26%, and Canadair (Bombardier) Regional Jet 900 at 13.54%.
What is the most popular airline from Ottawa to Washington, D.C.?
momondo data reveals that the most frequently booked airline on the route from Ottawa to Washington, D.C. is Air Canada, representing 54% of all bookings. The subsequent popular airlines are Porter Airlines at 31% and United Airlines at 15%.

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 Airlines	PriceFrom C$ 237	Free Cancellation	Rating 7.4 9,508 reviews	Search United Airlines flights
Porter Airlines	PriceFrom C$ 317	Free Cancellation	Rating 8.0 430 reviews	Search Porter Airlines flights
Air Canada	PriceFrom C$ 361	Free Cancellation	Rating 7.1 10,856 reviews	Search Air Canada flights

United Airlines Flights From Ottawa to Washington, D.C.
United Airlines flies from Ottawa to Washington, D.C. around 37 times per week, with 9,508 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$ 237 (round-trip), much lower than the average airfare cost of C$ 653 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, 10,856 ratings). Air Canada flies from Ottawa to Washington, D.C. around 33 times per week, with deals starting from C$ 361 round-trip and rising to an average price of around C$ 575.

Alexandria

Gettysburg

Gaithersburg

Fairfax

Linthicum Heights

Bethesda

National Harbor

Reston

Laurel

Herndon

Arlington

Fredericksburg

Manassas

Woodbridge

Silver Spring

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 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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Fly into one of these airports located in Washington, D.C.

Washington, D.C. Reagan-National Airport

Washington, D.C. Dulles Intl Airport

Cheap flights from Ottawa to Washington, D.C. from C$ 256

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 18/4. 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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Porter Airlines flights from Ottawa to Washington, D.C.

Our best Porter Airlines deals on Ottawa to Washington, D.C. flight tickets

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

Our best United Airlines deals on Ottawa to Washington, D.C. flight tickets

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

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

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

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

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

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

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

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

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

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

Which airlines fly to Washington, D.C.?

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

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

When to book flights from Ottawa to Washington, D.C.

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

Fastest flight time

Direct flights

Airports in 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

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

Air Canada Flights From Ottawa to Washington, D.C.

Travelling to a place near Washington, D.C.?

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An easier way to manage your Washington, D.C. trip

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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.

Airports listed have a maximum distance of 36.1 km from Washington, D.C.

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Airlines are sorted and displayed according to clicks in the past 7 days on momondo

Cabin classes currently available on flights to Washington, D.C.

List of cabin classes available on flights landing in Washington, D.C.. Availability may vary depending on flight origin and airline.

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