YOW - WAS

C$ 231 Find Cheap Flights from Ottawa to Washington, D.C.

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Ottawa to Washington, D.C. departing on 8/6. 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

KAYAK searches hundreds of travel sites at once for deals on flights to Washington, D.C.

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

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Ottawa to Washington, D.C. 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.

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

KAYAK's recommended round-trip deals from the most popular airlines that fly from Ottawa to Washington, D.C..
Discover the best prices for you by selecting your travel dates on KAYAK.
Choose your dates
Air Canada Logo
10:25 a.m. - 12:03 p.m.YOW-DCA
1h 38mdirect
Air Canada Logo
6:00 a.m. - 10:24 a.m.DCA-YOW
4h 24m1 stop
C$ 404Air Canada
Find Deal
Wed, 18 Jun - Wed, 25 Jun
Porter Airlines Logo
10:15 a.m. - 3:06 p.m.YOW-IAD
4h 51m1 stop
Porter Airlines Logo
4:20 p.m. - 8:38 p.m.IAD-YOW
4h 18m1 stop
C$ 411Porter Airlines
Find Deal
Thu, 15 May - Sun, 18 May
Porter Airlines Logo
9:35 a.m. - 3:06 p.m.YOW-IAD
5h 31m1 stop
Porter Airlines Logo
4:20 p.m. - 9:03 p.m.IAD-YOW
4h 43m1 stop
C$ 412Porter Airlines
Find Deal
Sun, 1 Jun - Wed, 4 Jun
Air Canada Logo
10:25 a.m. - 12:01 p.m.YOW-DCA
1h 36mdirect
Air Canada Logo
6:00 a.m. - 10:25 a.m.DCA-YOW
4h 25m1 stop
C$ 416Air Canada
Find Deal
Thu, 15 May - Sun, 18 May
United Airlines Logo
6:05 a.m. - 10:36 a.m.YOW-DCA
4h 31m1 stop
United Airlines Logo
12:55 p.m. - 2:27 p.m.DCA-YOW
1h 32mdirect
C$ 422United Airlines
Find Deal
Wed, 7 May - Wed, 7 May
United Airlines Logo
9:50 a.m. - 11:33 a.m.YOW-IAD
1h 43mdirect
United Airlines Logo
10:19 p.m. - 1:09 p.m.IAD-YOW
14h 50m2 stops
C$ 575United Airlines
Find Deal
Wed, 7 May - Wed, 7 May
WestJet Logo
5:55 a.m. - 10:59 p.m.YOW-DCA
17h 04m2 stops
WestJet Logo
11:00 a.m. - 12:22 a.m.DCA-YOW
13h 22m2 stops
C$ 628WestJet
Find Deal
Wed, 18 Jun - Wed, 25 Jun
WestJet Logo
5:55 a.m. - 11:15 p.m.YOW-DCA
17h 20m2 stops
WestJet Logo
6:00 a.m. - 12:22 a.m.DCA-YOW
18h 22m2 stops
C$ 632WestJet
Find Deal
Mon, 2 Jun - Fri, 6 Jun
Delta Logo
5:55 a.m. - 3:52 p.m.YOW-BWI
9h 57m2 stops
Delta Logo
9:36 a.m. - 12:22 a.m.BWI-YOW
14h 46m2 stops
C$ 912Delta
Find Deal
Mon, 4 Aug - Thu, 7 Aug
Delta Logo
5:55 a.m. - 4:23 p.m.YOW-BWI
10h 28m2 stops
Delta Logo
9:25 a.m. - 12:22 a.m.BWI-YOW
14h 57m2 stops
C$ 1,008Delta
Find Deal
Thu, 5 Jun - Sun, 8 Jun

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

 
Snippets provided in this section are AI-generated based on a summarization 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 specific 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
Air Canada

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


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

Read more about Air Canadaby Stefanie Waldek
United Airlines

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


Purchase Priority Boarding to avoid gate-checking your carry-on bag, placing you in Zone 2.

Airports
YOW

Ottawa airport offers quick security lines due to low flight volume, making it efficient for business travelers.

Read more about YOWby Mark Stachiew
DCA

DCA is the closest airport to downtown D.C., just 6 km away, making it very convenient for quick access.

Read more about DCAby Stefanie Waldek
IAD

The Silver Line Metrorail connects IAD to downtown D.C., taking about 55 minutes and costing $2-$6 (C$ 3–8).

Read more about IADby Stefanie Waldek
Our travel experts
Stefanie Waldek

Stefanie Waldek

Expert on Air Canada, United Airlines, DCA 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

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

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

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

The cheapest price for flight routes found by users searching on KAYAK in the last 2 weeks for round-trip flights from Ottawa to Washington, D.C..
Our data shows that the cheapest route for a return flight from Ottawa to Washington, D.C. cost C$ 322 and was between Ottawa (YOW) and Washington, D.C. Reagan-National Airport (DCA). On average, the best prices are found if you fly this route. The average price for a return flight for this route is C$ 322.

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

The average price of all round-trip flights from Ottawa to Washington, D.C. clicked on KAYAK for each day over the last 12 months.
For Ottawa to Washington, D.C., Friday is the cheapest day to fly on average and Sunday is the most expensive. Flying from Washington, D.C. back to Ottawa, the best deals are generally found on Saturday, with Monday being the most expensive.

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

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Ottawa to Washington, D.C., 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 Ottawa to Washington, D.C. is March, where tickets cost C$ 406 (return) on average. On the other hand, the most expensive months are June and October, where the average cost of round-trip tickets is C$ 597 and C$ 570 respectively.

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

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.
No, with an average price for the route of C$ 867, prices are generally cheapest when you fly direct.

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

To calculate weekly average prices, KAYAK takes all prices for each week before departure over the last year for round-trip flights from Ottawa to Washington, D.C., 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 Ottawa to Washington, D.C., you should book around 3 weeks before departure. For the absolute cheapest price, our data suggests you should book 25 weeks before departure.

Good to know

Low season

January

High season

August

Cheapest flight

C$ 231
Best time to beat the crowds (15% less expensive on average)
Most popular time to fly and prices are also 4% lower on average.
Flight from Ottawa to Washington Dulles Airport

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

Are your dates flexible? Find out the best times to travel from Ottawa to Washington, D.C. 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 Ottawa to Washington, D.C.

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

    In the last 3 days, the lowest price for a flight from Ottawa to Washington, D.C. was C$ 167 for a one-way ticket and C$ 292 for a round-trip.

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

    Ottawa is served by only 1 airport and there are 2 airports in Washington, D.C.. You will leave Ottawa from Ottawa and you will be arriving in Washington, D.C. at one of these airports: Washington, D.C. Reagan-National or Washington, D.C. Dulles Intl.

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

    Only Air Canada offers inflight Wi-Fi service on the Ottawa to Washington, D.C. flight route.

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

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

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

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

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

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

  • Which is the best airline for flights from Ottawa to Washington, D.C., Porter Airlines or United Airlines?

    The two airlines most popular with KAYAK users for flights from Ottawa to Washington, D.C. are Porter Airlines and United Airlines. With an average price for the route of C$ 429 and an overall rating of 8.0, Porter Airlines is the most popular choice. United Airlines is also a great choice for the route, with an average price of C$ 650 and an overall rating of 7.4.

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

    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 Ottawa to Washington, D.C..

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

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Washington, D.C. from Ottawa 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 Ottawa to Washington, D.C.?

    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 Washington, D.C. with an airline and back to Ottawa with another airline.

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

    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 Washington, D.C. from Ottawa up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

See more FAQs

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

  • Looking for a cheap flight? 25% of our users found flights on this route for C$ 274 or less one-way and C$ 464 or less round-trip.

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

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

Direct departures

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

Direct returns

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
See more nonstop flights

Top 3 airlines serving from Ottawa to Washington, D.C.

 
See real verified KAYAK customer reviews for airlines flying from Ottawa to Washington, D.C.. 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 Ottawa to Washington, D.C.? 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 284 reviews
8.2Boarding
8.1Comfort
8.8Crew
7.0Entertainment
7.6Food
Airline reviews

It was amazing although they did bump us up to the front which gave us more leg room and a meal. The service was great! The staff were friendly. :)

10.0 ExcellentDiane, Apr 2025YYZ - TPA
Read more Porter Airlines reviews

It was amazing although they did bump us up to the front which gave us more leg room and a meal. The service was great! The staff were friendly. :)

Overall very good... staff were friendly and helpful. boarding was good for the most part, but a little hard to get our carry-on bags on there.... I think people should be directed to keep their coats and small bags with them until all the carry-ons are loaded, and then, if there is space, they can put their small bags and coats up top.. makes it much easier to put baggage up. i loved the internet feature, but the entertainment was not there unless you have your own Netflix or similar platform. My chair did not recline, which was very annoying, and the arms won't go up near the isle, which makes it tough to get in and out of the seat.

Staff were excellant. Only snacks served. Some turbulence so we were offered Free beer or wine.

The staff is always great. Just the fact that our flight was the only one delayed from Halifax when all other carries were still flying. It happen a year ago out of Toronto as well. All others were flying but our flight got cancelled 1 hr before the time of departure.

The only issue had when i mentioned about comfort was the man beside me was on the larger side and took about 1/3 of my seat where i was pressed against the wall/window of the plane for the trip.

The check-in staff, boarding staff, and flight crew were all very friendly. Really miss the Porter lounge in Ottawa.

Thanks for giving a beer to everyone in the seat infront of me and then telling me that I can’t have one because they are going to land. I guess I need to pay for a seat and then pick one in the very front of the plane

The flight was delayed by more than one hour. The terminal was consequently overcrowded and hot. We lost our car reservation and hit rush hour traffic in Boston, which added two hours stuck in traffic to our trip.

Awesome, the whole way through. Thank you, this is the new Canadian Airline benchmark.

We were given a complimentary seat upgrade which was so unexpected but so lovely!

Mostly the experience was good except for the flight changes made by UA which meant longer layover in DC

Terrible. First of all we were delayed 4 3/4 hours departing Honolulu. As we had to leave our condo and the rental car had to be returned we had to go to the airport. Even though we had a business class boarding pass to Washington, since we did not have business class to Montreal we could not access the lounge without paying a $59 fee each. This does not make sense to us. Since we could not meet our original connection United booked us to Montreal via New York LaGuardia on Air Canada. In Washington a further delay got us into LaGuardia too late to make our connection to Montreal so we were booked on another Air Canada flight 3 hours later. We were originally scheduled to arrive in Montreal at 10:40 and arrived at 19:55. A totally exhausting day, United did not offer a meal voucher or any type of compensation. Air Canada did give us a digital meal voucher. The food in United business class is poor among all meals offered. The pods look nice but are not that confortable. Overall would not fly on United again.

Change cabin crew assisting business class. Not taking care, ignoring requests and calls. Never had such an experience in business class.

United left one of our bags back in SFO but that’s not my real complaint. The complaint is how it all went down. So we checked in the day before online and were told we could use the quick drop for luggage. So the next day I used baggage quick drop curbside at SFO. The agent mistakenly didn't tag my bag as he put my bag on the conveyor belt untagged. We immediately alerted him he had not tagged the bag. I walked with him to the baggage service office to find my bag and tag it. We waited outside the office for 10 mins. He came out and said everything was ok and the bag was going to be tagged and on my flight. We received a text that one of our bags was on the flight but the other was not. I alerted my first class flight attendant immediately upon boarding the flight. She was helpful and said she’d get it sorted out right away. She called over the gate agent. The gate agent used my bag number and looked over information on her device. She said my bag was on the flight. The flight attendant was standing with her, looking at the device, and also said “yep it’s on the flight”. During the flight the flight attendant made reference to how reassuring it must feel knowing the bag was on the flight. Upon arriving to IAD we received a text that my bag was not on my flight. The text said my bag would arrive to my final destination LIS 24 hrs late. I understand that mistakes happen. I was totally ok with my bag mistakenly not getting tagged at the quick drop. I was fine with walking down to baggage services to tag my bag. But, what I am not ok with is that the United staff said they fixed the mistake two different times, assuring me twice that my bag would be/was on the plane…and it wasn’t. I expected better attention by the employees, for them to do what they said they were going to do. We also spent extra money to upgrade our seats to first class, including the entire return leg from Lisbon to San Francisco because we wanted a smoother and more relaxing travel experience. Our money was not well spent. We will not be using United for travel going forward.

The flight was delayed, it took longer than anticipated because of weather, and they broke my luggage.

Horrifying! And I am almost 2 million miles with United. Late by 3 1/2 hours. Worst: after two hours on the plane waiting, they decided that one of the tires had been damaged and then decided to change it. Another hour and a half to change the tire!!!!! NO EXCUSE FOR THIS. The crew didn't even offer a glass of water until we had been on the plane for FIVE hours. This is the worst airline in the world. I'm simply stuck because they fly on the only routes I need.

lots of delays the crew were unclear about where to pick up my carry-on, which they took from me to check in on the plane.

Gate got changed about 4 times. Very confusing and very crowded. If you don’t have wifi to help get updates, you can be in deep trouble.

Attendants zipped through cabin so fast hardly anyone got the water they told us we could have in the short flight. Nothing else was offered.

Sucks ! All three flights I was on this trip were delayed.

They lost my checked in luggage, why do I pay for my cargo not arriving at the same destination as me?

Poor planning meant the plane was delayed an hour, then a thunder storm started and the ground staff couldn't work. Eventual arrival in Santiago was 3 hours late resulting in missed connections and the need to buy new tickets.

The take off was delayed as we were told that the baggages had to be rearranged to balance the weight. I only took a carry-on and a personal item, but the overhead bin was extremely small, even a normal size carryon can’t fit it, so they had to check it in for free. The seat was really tight and no entertainment at all.

The pork noodles were disgusting. The tuna sandwich had hardly any tuna and the bread was stale. A salad would have been better. An apple or a muffin.

So we didn't actually go. We were hoping to go for the Inauguration of the first female president. When That Guy got elected, we bailed. Unfortunately, we got basically none of our money back, despite having travel insurance. Would not fly with Air Canada again unless I had to.

This was my first time flying on Air Canada and the experience was good and pleasant enough, great crew members and the price I paid was amazing,

This was my first time and the experience was good and pleasant enough, great crew members and the price I paid was amazing,

Air Canada is the worst but the only option for my route

Super. Planes were clean. Flights were on time. boarding was smooth. Flight attendants were professional.

Flight was delayed by 45 min. No problems. Everyone took it in stride.

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

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