WAS - YOW

C$ 211 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 17/9. 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, 0 bags

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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Everything you should know

Cheapest round-trip
C$ 437
Typical prices: C$ 1,205-C$ 707
Porter Airlines
Thu 17/9Mon 21/9
IAD - YOW • 1 stop
Cheapest direct flights
C$ 467
Typical prices: C$ 792-C$ 579
Air Canada
Thu 9/7Mon 13/7
DCA - YOW • Direct
Advice from real travellers
AI-powered summary based on content written by travel experts. AI can make mistakes.
United Economy Plus adds up to 15 cm more legroom than standard economy.
Air Canada Preferred Economy offers up to 10 cm extra legroom for a fee.
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Cheapest • from C$ 437 (round-trip)
Best reviews • 8.0 score
Airline reviews
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Airline reviews
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Direct flights
You can fly direct with Air Canada and United Airlines. Average duration is 1h 40m
Direct flights
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Direct flights
Direct flights
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Top routes
Cheapest • 38% average savings
Most popular
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When to travel
Cheapest • 31% price drop
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Flight Deals
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Flight 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

Thu, 17 Sep - Mon, 21 Sep
Porter Airlines Logo
3:50 p.m. - 8:04 p.m.
IAD
-
YOW
4h 14m
1 stop
Porter Airlines Logo
10:40 a.m. - 3:10 p.m.
YOW
-
IAD
4h 30m
1 stop
C$ 437Porter Airlines
Fri, 18 Sep - Mon, 21 Sep
Porter Airlines Logo
3:50 p.m. - 8:04 p.m.
IAD
-
YOW
4h 14m
1 stop
Porter Airlines Logo
10:40 a.m. - 3:10 p.m.
YOW
-
IAD
4h 30m
1 stop
C$ 439Porter Airlines
Wed, 18 Nov - Mon, 30 Nov
Porter Airlines Logo
11:20 a.m. - 6:14 p.m.
IAD
-
YOW
6h 54m
1 stop
Porter Airlines Logo
10:20 a.m. - 5:14 p.m.
YOW
-
IAD
6h 54m
1 stop
C$ 449Porter Airlines
Sat, 21 Nov - Tue, 24 Nov
Porter Airlines Logo
11:20 a.m. - 5:29 p.m.
IAD
-
YOW
6h 09m
1 stop
Porter Airlines Logo
10:20 a.m. - 5:14 p.m.
YOW
-
IAD
6h 54m
1 stop
C$ 454Porter Airlines
Tue, 7 Jul - Thu, 9 Jul
Porter Airlines Logo
3:55 p.m. - 8:04 p.m.
IAD
-
YOW
4h 09m
1 stop
Porter Airlines Logo
10:40 a.m. - 3:11 p.m.
YOW
-
IAD
4h 31m
1 stop
C$ 463Porter Airlines
Thu, 23 Jul - Sat, 1 Aug
Porter Airlines Logo
3:55 p.m. - 8:04 p.m.
IAD
-
YOW
4h 09m
1 stop
Porter Airlines Logo
10:40 a.m. - 3:10 p.m.
YOW
-
IAD
4h 30m
1 stop
C$ 464Porter Airlines
Thu, 9 Jul - Mon, 13 Jul
Air Canada Logo
12:40 p.m. - 2:11 p.m.
DCA
-
YOW
1h 31mdirect
Air Canada Logo
10:25 a.m. - 12:00 p.m.
YOW
-
DCA
1h 35mdirect
C$ 467Air Canada
Thu, 9 Jul - Mon, 13 Jul
Air Canada Logo
5:15 p.m. - 9:52 p.m.
IAD
-
YOW
4h 37m
1 stop
Air Canada Logo
12:15 p.m. - 4:38 p.m.
YOW
-
IAD
4h 23m
1 stop
C$ 467Air Canada
Thu, 9 Jul - Mon, 13 Jul
Air Canada Logo
6:59 a.m. - 11:15 a.m.
DCA
-
YOW
4h 16m
1 stop
Air Canada Logo
10:25 a.m. - 12:00 p.m.
YOW
-
DCA
1h 35mdirect
C$ 478Air Canada
Thu, 9 Jul - Mon, 13 Jul
Multiple Airlines Logo
9:28 p.m. - 2:35 p.m.
BWI
-
YOW
17h 07m
1 stop
Multiple Airlines Logo
7:00 a.m. - 12:10 p.m.
YOW
-
BWI
29h 10m
1 stop
C$ 569Multiple Airlines
Booking Insights

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.

How much is a round-trip flight from Washington, D.C. to Ottawa?

This analysis is based on the cheapest round-trip price found on KAYAK in the last 12 months by searching for a flight from Washington, D.C. to Ottawa departing in September.

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

Data is based on round-trip flight searches on KAYAK over the past month.

The absolute cheapest return flight from Washington, D.C. to Ottawa costs C$ 304 on the route between Washington, D.C. Reagan-National Airport (DCA) and Ottawa (YOW). However, over the past month, flights between Washington, D.C. Dulles Intl Airport (IAD) and Ottawa (YOW) were, on average, 38% cheaper than other Washington, D.C.-Ottawa routes. The most popular route is between Washington, D.C. Reagan-National Airport (DCA) and Ottawa (YOW).

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 Friday and avoid Tuesdays if you are looking for the best rates. For your return to Washington, D.C., you’ll find the best rates on Saturdays 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 December, where tickets cost C$ 196 (return) on average. On the other hand, the most expensive months are February and April, where the average cost of round-trip tickets is C$ 472 and C$ 432 respectively.

Can I save money by flying with a layover from Washington, D.C. to Ottawa?

The average round-trip price for all non-stop flights, flights with one layover, and flights with two layovers for the route found by users searching on KAYAK in the last 2 weeks.

Yes, flying with a layover may cost you more time, but you can also save money on the route, with a 1 stop layover the cheapest option at C$ 650 on average.

Expert advice

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

 
AI-powered summary based on content written by travel experts. AI can make mistakes.
KAYAK teamed up with top travel experts to share the best tips for your journey.
Our travel experts
Stefanie Waldek

Stefanie Waldek

Expert on Air Canada, United Airlines and IAD

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.

Mark Stachiew

Mark Stachiew

Expert on YOW

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.

Ramsey Qubein

Ramsey Qubein

Expert on DCA

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.

Good to know

Low seasonFebruary
Cheapest flightC$ 211
Best time to beat the crowds but there is an average 5% increase in price.
Most popular time to fly and prices are also 5% 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 5 days, the lowest price for a flight from Washington, D.C. to Ottawa was C$ 211 for a one-way ticket and C$ 437 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, United Airlines, JetBlue, Lufthansa, and Porter Airlines 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 Embraer 175 (Enhanced Winglets) is the aircraft model that flies most regularly on the Washington, D.C. to Ottawa flight route.

  • 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$ 277 or less one-way and C$ 839 or less round-trip.

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

 
Direct data is based off flight results for the next 60 days. Find direct flights from all airlines flying 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

Reviews of the 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.
8.0
Porter AirlinesOverall score based on 438 reviews
8.0Comfort
8.2Boarding
7.6Food
6.9Entertainment
8.6Crew
Airline reviews

The staff was amazing. Best service I’ve had on an aircraft in a long time. Was not particularly happy with the food. Flight was at 10:50 and left home too early for breakfast and wasn’t able to purchase food at airport and felt for sure I could get some breakfast to buy on airplane. Nope as food was served around 11:30 and only one choice left (I was at 22C) so ordered the chicken dish thinking I’m getting a hot meal but cold chicken with rice and carrots etc. I was looking forward to a croissant sandwich and a hot cup of tea. The FA was kind to explain they were serving dinner at that time. She was lovely Other than the disappointment with the food the staff was amazing. On my return flight I will make sure to eat and take some food with me so I’m not hungry or disappointed. This was my second time ever flying Porter and will consider checking them when I next come to visit my daughter. Have to say it again best crew I’ve ever experienced on a flight and I travel quite a bit. Thanks.

10.0 ExcellentAngela, May 2026
YYZ - YVR
Read more Porter Airlines reviews

The staff was amazing. Best service I’ve had on an aircraft in a long time. Was not particularly happy with the food. Flight was at 10:50 and left home too early for breakfast and wasn’t able to purchase food at airport and felt for sure I could get some breakfast to buy on airplane. Nope as food was served around 11:30 and only one choice left (I was at 22C) so ordered the chicken dish thinking I’m getting a hot meal but cold chicken with rice and carrots etc. I was looking forward to a croissant sandwich and a hot cup of tea. The FA was kind to explain they were serving dinner at that time. She was lovely Other than the disappointment with the food the staff was amazing. On my return flight I will make sure to eat and take some food with me so I’m not hungry or disappointed. This was my second time ever flying Porter and will consider checking them when I next come to visit my daughter. Have to say it again best crew I’ve ever experienced on a flight and I travel quite a bit. Thanks.

A few improvements: 1. No signages at the airport that the porter airline was a codeshare and i could check-in at American counter. 2. Crew at the gate said they couldn't change my reward to Alaska - despite that being done previously 3. Despite there being many open seats, i was assigned a seat at the very back near lavatory, last row. Fortunately, the pilot wanted more people moved up so the flight attendants moved me up. It seemed very odd to have been stuck in last row with very few people nearby..

I didn’t receive any help when they messed up and wasn’t honest and the supervisor did absolutely nothing to help me so I had to buy another ticket at $537

There was No Flight. Both Kayak and Porter refused to honor my booking. I was asked for an additional 1,300 $ CAD to keep the flight. After several emails to both Kayak and Porter I was ignored. I had to cancel my March spring break plans, dog kennel and hotel. I had to re-book another vacation to Nassau in January w Expedia. I had to re-book a new vacation for spring break. Porter and Kayak both blamed each other and would not work together to fix this. Not cool.

Even tho the flight was a bit delayed the team was apologetic. Everyone was friendly and efficient.

The flight was a little delayed but check in was easy and boarding was quick. Luggage was quickly available and everything worked great.

The Flight took off 2hrs late because there was no pilot showing up when the flight was ready to board.. Though the cabin crew was present and had prepared the plane, the FO turned around after 15 min and went away. A crew to fly the plane finally arrived over an hour later and we were able to board 1h30 min later than planned time... until everything was loaded, we left 2h late from the gate. This was a small plane, so don't expect any Entertainment... Wi-Fi access on board would work, but took an awful amount of time to figure out and get it work (I'm an IT person). Flying as VIPorter customer, I was expecting at least some warm meal, but everything served was just cold.. except the coffee maybe. Even in so-called VIPorter seats, space is cramped and trays are so tiny, you can barely setup your food. Flight caught up during the coast-to-coast crossing and was able to recoup about 45 min from the delay.. still arrived very late in Vancouver and had to wait a long time to get our registered bags. Let's see how the return flight will be in a few days..

The flight booking code given by Kayak was not the correct one used by the airline. I had to call to get the correct one. It was never sent to me. Totally unacceptable!

Due to a known technical error that Porter has not fixed in over a year, I was unable to check in the children on my reservation online and had to do it at the airport. Upon check in, there were no seats together, which was an issue as we had young children. The gate agent did manage to seat us together by moving other passengers, which was appreciated, but the other passengers were never informed, leading to confusion and delay upon boarding. The flight was over an hour late; no explanation or apology was ever issued. The bags on Porter take a long time to arrive--over half an hour at Hamilton on my inbound flight, and not much better on my return to Edmonton.

Much roomer than air Canada! Great flight for the price. No complaints

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

Information on your arrival and departure airports