WAS - YOW

C$ 139 Find Cheap Flights from Washington, D.C. to Ottawa

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Washington, D.C. to Ottawa departing on 22/7. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy

KAYAK searches hundreds of travel sites at once for deals on flights to Ottawa

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Washington, D.C. to Ottawa, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Washington, D.C. to Ottawa, as well as popular online travel agencies
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Flights Deals

Cheap Flights from Washington, D.C. to Ottawa (WAS-YOW)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Washington, D.C. to Ottawa that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Washington, D.C. to Ottawa

Sat, 9 Aug - Mon, 11 Aug
Porter Airlines Logo
4:10 p.m. - 7:53 p.m.IAD-YOW
3h 43m1 stop
Porter Airlines Logo
11:00 a.m. - 2:56 p.m.YOW-IAD
3h 56m1 stop
C$ 371Porter Airlines
Find Deal
Fri, 7 Nov - Tue, 11 Nov
Porter Airlines Logo
7:00 a.m. - 11:11 a.m.IAD-YOW
4h 11m1 stop
Porter Airlines Logo
9:40 a.m. - 12:59 p.m.YOW-IAD
3h 19m1 stop
C$ 376Porter Airlines
Find Deal
Mon, 7 Jul - Fri, 11 Jul
Air Canada Logo
12:55 p.m. - 2:27 p.m.DCA-YOW
1h 32mdirect
Air Canada Logo
10:25 a.m. - 12:03 p.m.YOW-DCA
1h 38mdirect
C$ 410Air Canada
Find Deal
Mon, 7 Jul - Fri, 11 Jul
Air Canada Logo
6:00 a.m. - 10:19 a.m.DCA-YOW
4h 19m1 stop
Air Canada Logo
10:25 a.m. - 12:03 p.m.YOW-DCA
1h 38mdirect
C$ 413Air Canada
Find Deal
Sun, 13 Jul - Sun, 20 Jul
 Logo
11:35 a.m. - 4:33 p.m.IAD-YOW
4h 58m1 stop
 Logo
7:00 a.m. - 10:16 a.m.YOW-IAD
3h 16m1 stop
C$ 448
Find Deal
Tue, 15 Jul - Thu, 17 Jul
 Logo
4:10 p.m. - 9:03 p.m.IAD-YOW
4h 53m1 stop
 Logo
7:00 a.m. - 10:16 a.m.YOW-IAD
3h 16m1 stop
C$ 449
Find Deal
Thu, 11 Sep - Thu, 18 Sep
WestJet Logo
3:00 p.m. - 12:22 a.m.IAD-YOW
9h 22m2 stops
WestJet Logo
3:45 p.m. - 5:50 p.m.YOW-IAD
26h 05m1 stop
C$ 807WestJet
Find Deal
Thu, 3 Jul - Sun, 6 Jul
United Airlines Logo
12:31 p.m. - 2:13 p.m.IAD-YOW
1h 42mdirect
United Airlines Logo
2:45 p.m. - 4:20 p.m.YOW-IAD
1h 35mdirect
C$ 847United Airlines
Find Deal
Mon, 28 Jul - Mon, 4 Aug
United Airlines Logo
12:31 p.m. - 2:13 p.m.IAD-YOW
1h 42mdirect
United Airlines Logo
7:29 p.m. - 9:04 p.m.YOW-IAD
1h 35mdirect
C$ 868United Airlines
Find Deal
Sun, 20 Jul - Wed, 23 Jul
WestJet Logo
5:35 a.m. - 12:22 a.m.BWI-YOW
18h 47m2 stops
WestJet Logo
5:45 a.m. - 8:48 p.m.YOW-BWI
15h 03m2 stops
C$ 1,048WestJet
Find Deal
Expert advice

Expert advice for your flight from Washington, D.C. to Ottawa

 
Snippets provided in this section are AI-generated based on a summarisation of KAYAK-commissioned articles. The articles are presented as-is, for general informational purposes only, and may not be up-to-date. The opinions contained in the articles are original to the author and reflect their authentic experience, which may vary significantly from the experience of others.
KAYAK teamed up with top travel experts to share the best tips for your journey.
Airlines
United Airlines

United offers Economy Plus seats with up to 15 cm more legroom than standard economy.


United’s Priority Boarding can be purchased to ensure overhead bin space for carry-ons.

Air Canada

Air Canada offers priority check-in for higher fare classes and elite status members.


Air Canada’s Preferred Economy seats offer up to 10 cm extra legroom for a fee.

Read more about Air Canadaby Stefanie Waldek
Airports
DCA

DCA is conveniently located just 8 km from downtown D.C., making it easy to reach via metro or taxi.

Read more about DCAby Ramsey Qubein
IAD

Dulles offers easy navigation with AeroTrain and mobile lounges connecting terminals. Plan your route ahead to save time.

Read more about IADby Stefanie Waldek
YOW

At YOW, taxis and rideshares are readily available at the arrivals level for quick city access.

Read more about YOWby Mark Stachiew
Our travel experts
Stefanie Waldek

Stefanie Waldek

Expert on United Airlines, Air Canada and IAD

Stefanie Waldek

Stefanie Waldek

Stefanie Waldek is a freelance space, travel, and design writer based in Saratoga Springs, NY. Her words have appeared in Space.com, Travel + Leisure, Condé Nast Traveler, Architectural Digest, and House Beautiful, among other publications. An expert in aviation and expedition cruising, Stefanie is frequently up in the air or on the sea, likely en route to Antarctica or the Arctic.

Read more
Mark Stachiew

Mark Stachiew

Expert on YOW

Mark Stachiew

Mark Stachiew

Mark Stachiew has been exploring the world and writing about it for more than 30 years. His travel stories have appeared in numerous newspapers, magazines and online publications in Canada, the United States and beyond.

Read more
Ramsey Qubein

Ramsey Qubein

Expert on DCA

Ramsey Qubein

Ramsey Qubein

An avid traveler and aviation expert who has visited 173 countries, all 50 states and seven continents, Ramsey Qubein flies nearly 400,000 miles a year. As a North Carolina-based freelance journalist for publications including Conde Nast Traveler, Forbes, USA Today and Bloomberg among others, he explores the latest trends in aviation, hospitality, cruises and business.

Read more
Useful Info

KAYAK's insights & trends for Washington, D.C. to Ottawa flights

Get data-powered insights and trends into flights from Washington, D.C. to Ottawa to help you find the cheapest flights, the best time to fly and much more.

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

The cheapest price for flight routes found by users searching on KAYAK in the last 2 weeks for round-trip flights from Washington, D.C. to Ottawa.

Our data shows that the cheapest route for a return flight from Washington, D.C. to Ottawa cost C$ 233 and was between Washington, D.C. Reagan-National Airport (DCA) and Ottawa (YOW). On average, the best prices are found if you fly this route. The average price for a return flight for this route is C$ 233.

What’s the cheapest day of the week to fly from Washington, D.C. to Ottawa?

The average price of all round-trip flights from Washington, D.C. to Ottawa clicked on KAYAK for each day over the last 12 months.

When flying from Washington, D.C. to Ottawa, you should consider leaving on a Saturday and avoid Mondays if you are looking for the best rates. For your return to Washington, D.C., you’ll find the best rates on Fridays and the most expensive ones on Sundays.

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

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Washington, D.C. to Ottawa, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.

The cheapest month for flights from Washington, D.C. to Ottawa is January, where tickets cost C$ 349 (return) on average. On the other hand, the most expensive months are March and September, where the average cost of round-trip tickets is C$ 646 and C$ 616 respectively.

How far in advance should I book a flight from Washington, D.C. to Ottawa?

To calculate weekly average prices, KAYAK takes all prices for each week before departure over the last year for round-trip flights from Washington, D.C. to Ottawa, removes the top 0.1% to account for outliers, and then takes the average of all the values for each week.

To get a below average price on the flight from Washington, D.C. to Ottawa, you should book around 3 weeks before departure. For the absolute cheapest price, our data suggests you should book 17 weeks before departure.


Good to know

Low seasonApril
High seasonJanuary
Cheapest flightC$ 139
Best time to beat the crowds (12% less expensive on average)
Most popular time to fly and prices are also 35% lower on average.
Flight from Washington Dulles Airport to Ottawa

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

Are your dates flexible? Find out the best times to travel from Washington, D.C. to Ottawa based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking flights from Washington, D.C. to Ottawa

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

    In the last 3 days, the lowest price for a flight from Washington, D.C. to Ottawa was C$ 102 for a one-way ticket and C$ 273 for a round-trip.

  • Which airports will I be using when flying from Washington, D.C. to Ottawa?

    Washington, D.C. has 2 major airports: Washington, D.C. Reagan-National and Washington, D.C. Dulles Intl. Ottawa is the only airport in Ottawa. You’ll usually find the cheapest deals if you fly from Washington Dulles Airport.

  • Which airlines offer Wi-Fi service onboard planes from Washington, D.C. to Ottawa?

    Air Canada, American Airlines, and SWISS offer inflight Wi-Fi service on the Washington, D.C. to Ottawa flight route.

  • Which aircraft models fly most regularly from Washington, D.C. to Ottawa?

    The Canadair (Bombardier) Regional Jet CRJ-550 is the aircraft model that flies most regularly on the Washington, D.C. to Ottawa flight route.

  • Which airline alliances offer flights from Washington, D.C. to Ottawa?

    Star Alliance is the only airline alliance operating flights between Washington, D.C. and Ottawa.

  • On which days can I fly direct from Washington, D.C. to Ottawa?

    There are direct flights from Washington, D.C. to Ottawa on a daily basis.

  • How does KAYAK find such low prices on flights from Washington, D.C. to Ottawa?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Washington, D.C. to Ottawa.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Washington, D.C. to Ottawa?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Ottawa from Washington, D.C. is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Washington, D.C. to Ottawa?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Ottawa with an airline and back to Washington, D.C. with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Washington, D.C. to Ottawa?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Ottawa from Washington, D.C. up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

KAYAK’s top tips for finding a cheap flight from Washington, D.C. to Ottawa

  • Looking for a cheap flight? 25% of our users found flights on this route for C$ 206 or less one-way.

Prefer to fly direct from Washington, D.C. to Ottawa?

Find which airlines fly direct from Washington, D.C. to Ottawa Airport, which days they fly and book direct flights.

Direct departures

Washington, D.C. to Ottawa

Monday

Air Canada,United Airlines

Air Canada,United Airlines

Tuesday

Air Canada,United Airlines

Air Canada,United Airlines

Wednesday

Air Canada,United Airlines

Air Canada,United Airlines

Thursday

Air Canada,United Airlines

Air Canada,United Airlines

Friday

Air Canada,United Airlines

Air Canada,United Airlines

Saturday

Air Canada,United Airlines

Air Canada,United Airlines

Sunday

Air Canada,United Airlines

Air Canada,United Airlines

See more nonstop flights

Direct returns

Ottawa to Washington, D.C.

Monday

Air Canada,United Airlines

Air Canada,United Airlines

Tuesday

Air Canada,United Airlines

Air Canada,United Airlines

Wednesday

Air Canada,United Airlines

Air Canada,United Airlines

Thursday

Air Canada,United Airlines

Air Canada,United Airlines

Friday

Air Canada,United Airlines

Air Canada,United Airlines

Saturday

Air Canada,United Airlines

Air Canada,United Airlines

Sunday

Air Canada,United Airlines

Air Canada,United Airlines

See more nonstop flights
See more nonstop flights

Top airline flying from Washington, D.C. to Ottawa

 
See real verified KAYAK customer reviews for airlines flying from Washington, D.C. to Ottawa. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from Washington, D.C. to Ottawa? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
7.1
Air CanadaOverall score based on 9549 reviews
7.8Crew
6.8Entertainment
6.3Food
7.3Boarding
7.0Comfort
Airline reviews

the seats aren't the most comfy -- too little padding and I could feel whatever the passenger behind me was doing. Otherwise, it's all good.

10.0 ExcellentAnonymous, May 2025YQB - YOW
Read more Air Canada reviews

the seats aren't the most comfy -- too little padding and I could feel whatever the passenger behind me was doing. Otherwise, it's all good.

This flight didn't happen for me because of overbooking.

Everything was simple and easy. The lady at the gate was super friendly, I wish I had her name to share. She's a little older, dark-haired. You can tell she likes her job and would be a great influence on any young people training with her.

During the pre-departure safety briefing, the flight attendants rushed through the mandatory safety announcements in both official languages, making it difficult for passengers to clearly understand the instructions. Given the importance of these messages for passenger safety, this lack of clarity was concerning. Perhaps use a recoded message to alleviate this concern. Additionally, the flight attendants appeared to lack the professional attentiveness typically expected during a flight. Rather than focusing on timely and courteous service, they seemed more engaged in personal conversations than in addressing the needs of passengers. I hope this feedback is taken constructively and helps in maintaining the high standards of professionalism and care that travelers expect from a national carrier: AC.

Service is pretty good. Sandwiches have to be purchased but I’ve bought my own food. Seat was comfortable and various movies to chose from.

The flight was delayed at the last moment quoting an absurd weather reason. This delay led to an issue with my connecting flight. I was made to run (literary) from this flight to the next one ( as they preponed departure. I was still in my DCA to YYZ flight when the boarding started for the next connecting flight. After my sprint to get the connecting flight, found that no place for my carry on. Had to sit for 3 hours with my back-pack on my lap , it was the most uncomfortable and inconvenient journey with little to no empathy shown by cabin crew in both flights. Another poor show from Air Canada!! Cant help because of lack of options !!

One leg of the flight arrived late which necessitated a rebooking on the next leg. Although there were no major weather events in play, best choice offered was a 7 hour wait in the Vancouver airport for a 4 hour totally packed red eye flight to Ottawa. No opportunities to return earlier via other major hubs like Toronto or Montreal. Felt very much like national routes were no longer well supported. Adding insult to injury, entertainment system for my seat was out of order. Thought I might use wi-fi, but discovered it would cost $10 per hour! Paid a lot for the flight as it was over the holiday period. Probably won't be doing that again.

Made me check my carry on despite there being dozens of empty bins when I boarded which significantly inconvenienced me.

Your survey should include a "Not Applicable" response for those elements that were not utilized, such as food (unless your want me to rate the cookie I received) and the entertainment (unless you want me to rate the emergency landing presentation). Boarding was late, the plane took-off almost an hour late, and the gate to board changed five times while I was waiting there. At 1:00 pm the plane had not yet approached the gate for passengers to load, yet the information board indicated that the take-off would be 12:30 pm and its status was "on time". Curious.

The people are great! The trip to Japan is simply never ending!!! Not the problem of the airlines, though.

Everything you need to know for your flight from Washington, D.C. to Ottawa

Information on your arrival and departure airports

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