YOW - WAS

$181 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 5/29. 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 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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Everything you should know

Cheapest round-trip
$314
Typical prices: $432-$332
Porter Airlines
Thu 5/21Thu 5/28
YOW - IAD • 1 stop
Cheapest non-stop
$356
Typical prices: $477-$347
Air Canada
Thu 6/18Tue 6/30
YOW - DCA • Non-stop
Advice from real travelers
AI-powered summary based on content written by travel experts. AI can make mistakes.
United's Economy Plus offers six extra inches of legroom.
Purchase Priority Boarding on United for carry-on space.
Expert advice
Expert advice
Expert advice
Expert advice
Top airlines
Cheapest • from $314 (round-trip)
Best reviews • 7.4 score
Airline reviews
Airline reviews
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Airline reviews
Airline reviews
+1
Nonstop flights
You can fly direct with Air Canada and United Airlines. Average duration is 1h 45m
Direct flights
Direct flights
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Direct flights
Direct flights
+1
Top routes
Cheapest • 25% average savings
Most popular
Insights
Insights
Insights
Insights
Top layover airports
Cheapest • Avg $296 (round-trip)
Shortest trip • 3h 42m (one-way)
Insights
Insights
Insights
Insights
When to travel
Cheapest • 49% price drop
Most popular
Good to know
Good to know
+1
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Good to know
Good to know
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KAYAK searches 100s of sites at once to find you the best travel deals.
We hope you love your trip to Washington, D.C.!
Flight Deals
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Expert advice
Flight Deals

Cheap Flights 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.
Discover the best prices for you by selecting your travel dates on KAYAK.

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

Thu, May 21 - Thu, May 28
Porter Airlines Logo
11:00 am - 3:21 pm
YOW
-
IAD
4h 21m
1 stop
Porter Airlines Logo
4:05 pm - 9:44 pm
IAD
-
YOW
5h 39m
1 stop
$314Porter Airlines
Wed, Jun 17 - Mon, Jun 22
Porter Airlines Logo
11:00 am - 3:21 pm
YOW
-
IAD
4h 21m
1 stop
Porter Airlines Logo
11:30 am - 5:54 pm
IAD
-
YOW
6h 24m
1 stop
$317Porter Airlines
Fri, May 29 - Thu, Jun 4
Porter Airlines Logo
11:00 am - 3:21 pm
YOW
-
IAD
4h 21m
1 stop
Porter Airlines Logo
11:30 am - 2:54 pm
IAD
-
YOW
3h 24m
1 stop
$321Porter Airlines
Thu, Jun 18 - Tue, Jun 30
Porter Airlines Logo
11:00 am - 3:16 pm
YOW
-
IAD
4h 16m
1 stop
Porter Airlines Logo
11:30 am - 5:54 pm
IAD
-
YOW
6h 24m
1 stop
$322Porter Airlines
Mon, Jun 8 - Mon, Jun 15
Porter Airlines Logo
11:00 am - 3:21 pm
YOW
-
IAD
4h 21m
1 stop
Porter Airlines Logo
4:05 pm - 8:04 pm
IAD
-
YOW
3h 59m
1 stop
$324Porter Airlines
Fri, Jun 19 - Fri, Jun 19
Lufthansa Logo
6:05 am - 11:28 am
YOW
-
IAD
5h 23m
1 stop
Lufthansa Logo
10:10 pm - 11:54 pm
IAD
-
YOW
1h 44mnonstop
$339Lufthansa
Thu, Jun 4 - Sun, Jun 7
Multiple Airlines Logo
7:00 am - 7:50 pm
YOW
-
IAD
12h 50m
2 stops
Multiple Airlines Logo
5:30 pm - 3:00 pm
IAD
-
YOW
21h 30m
1 stop
$343Multiple Airlines
Thu, Jun 18 - Tue, Jun 30
Air Canada Logo
10:25 am - 12:00 pm
YOW
-
DCA
1h 35mnonstop
Air Canada Logo
12:40 pm - 2:11 pm
DCA
-
YOW
1h 31mnonstop
$356Air Canada
Wed, Jun 10 - Sat, Jun 20
Air Canada Logo
10:25 am - 12:01 pm
YOW
-
DCA
1h 36mnonstop
Air Canada Logo
12:40 pm - 2:11 pm
DCA
-
YOW
1h 31mnonstop
$364Air Canada
Mon, Jun 1 - Fri, Jun 5
Multiple Airlines Logo
7:00 am - 7:43 am
YOW
-
BWI
24h 43m
2 stops
Multiple Airlines Logo
7:48 pm - 3:00 pm
BWI
-
YOW
19h 12m
1 stop
$400Multiple Airlines
Booking Insights

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.

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

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

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

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

The absolute cheapest return flight from Ottawa to Washington, D.C. costs $206 on the route between Ottawa (YOW) and Washington, D.C. Dulles Intl Airport (IAD). However, over the past month, flights between Ottawa (YOW) and Washington, D.C. Reagan-National Airport (DCA) were, on average, 25% cheaper than other Ottawa-Washington, D.C. routes. The most popular route is between Ottawa (YOW) and Washington, D.C. Dulles Intl Airport (IAD).

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.

If your flying dates are flexible, you should consider flying to Washington, D.C. on a Friday, as we generally find the cheapest rates on that day for this route. On the other hand, Sunday is the most expensive day to fly from Ottawa to Washington, D.C.. For your return ticket, we recommend flying on a Saturday and avoiding Thursdays for the best deals.

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 April, where tickets cost $100 (return) on average. On the other hand, the most expensive months are October and June, where the average cost of round-trip tickets is $276 and $255 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 $449, prices are generally cheapest when you fly direct.

Expert advice

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

 
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 and United Airlines

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.

Good to know

Low seasonFebruary
Cheapest flight$181
Best time to beat the crowds but there is an average 5% increase in price.
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 $181 for a one-way ticket and $314 for a round-trip.

  • Do I need a passport to fly between Ottawa and Washington, D.C.?

    Yes, you'll most likely have to show a valid passport before boarding the plane in Ottawa and on arrival in Washington, D.C..

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

    Air Canada, and WestJet offer 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 Embraer 175 (Enhanced Winglets) 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 nonstop flights from Ottawa to Washington, D.C. on a daily basis.

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

    The two airlines most popular with KAYAK users for flights from Ottawa to Washington, D.C. are United Airlines and Air Canada. With an average price for the route of $347 and an overall rating of 7.4, United Airlines is the most popular choice. Air Canada is also a great choice for the route, with an average price of $381 and an overall rating of 7.1.

  • 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.

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 $276 or less one-way and $386 or less round-trip.

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

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

Reviews of the top airlines flying 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.
7.4
United AirlinesOverall score based on 9680 reviews
7.7Boarding
7.1Entertainment
8.1Crew
7.3Comfort
6.6Food
Airline reviews

Was great in general, try to respect time and excuses when slight changes have been made, appreciated!

8.0 ExcellentAnonymous, Apr 2026
DEN - IAD
Read more United Airlines reviews

Was great in general, try to respect time and excuses when slight changes have been made, appreciated!

very average service no complimentary alcoholics drinks unlike other airlines such as Porter airlines No decent seats available during check-in time the day before

Terrific in every way. On time, professional staff, multiple movie options to select, great food and drink.

My bags were misplaced!!! Im in a foreign country with no bags

I liked that it was on time, however, the food was not good.

Offered to check carry on to final destination. This is the most absurd thing in the world. I'm carrying on because I need what is in the carry-on. I'm okay with picking up at next stop but then I will be on much larger plane that can accommodate it. Also, if there is ever a change to your flight. Go to the airport and have the people there fix your ticket. Don't do it over the phone or online with United they screwed us up and ended up with flights for our last leg that took off before our first leg.

United is one airline which regardless of how many separate United tickets in existence, if one flight breaks down, the airline will take care of all the flights.

It was okay, the food was good, but after the landing there was not enough time for luggage and security to catch a connection. It was crowded on board.

When I went to check in at the United counter in Barcelona, Spain I had 2 different menat 2 different times in United uniforms (standing around with a couple other employees) ask me if I was traveling alone. The one man asked me 3 different ways if I was traveling alone. I am, 68 yeaers old and have all my faculties. I thought it was weird and it made me feel very uncomfortable. What difference does it make if I was traveling alone or with someone? What if I was a recent widow? That would have been horrible. They never gave me a reason why they needed to know who I was traveling with. I was hesitant to question them because I needed to be on that flight.

We were delayed for about an hour from taking off due to traffic control procedures at the destination airport. But once in the air, the flight went well. The crew members were great and provided cabin service despite moderate turbulence during much of the flight.

The crew was amazing! I was a bit surprised and disappointed that there was not wifi available for personal use. The only thing I would change would be the seat cushions. They are not comfortable at all for long flights.

It was a very small plane and was ok. No food or entertainment so there should be an option for NA.

We were happy with the service and cost of checking a bag

Flying with Air Canada is still better than the discount airlines like Flair. The seats are more comfortable and the on-board entertainment is better, with each seat having a built in screen and lots of content to watch. Onboard WIFI is also great to have, as well as plugs for charging. I think passengers in general are getting better at not bringing too much luggage onboard, and Air Canada is better at managing this without customers feeling like they are being taken advantage of with extra fees. I have travelled on different airlines and all seem to be loading faster, with fewer people bringing both a carry on and a personal item. Now I just bring one item and it fits under the seat so I don't need to worry about finding a place in the overhead bins. Overall, across the industry, asking customers to pay for carry on baggage is fair because it allows customers to only pay for what they need, and it helps to keep the planes on time. Kudos to Air Canada for its approach - the desired result is achieved without customers feeling that they are being surprised and caught with unexpected extra fees.

Due to the strike by AC flight attendants, my flight was cancelled. Very disappointing! A refund is being processed. This was not a Kayak issue. I will be sure to come back to Kayak in the future.

Biggest problem for me is that I am Star Alliance Gold and they were not able to give me access to to Maple Lounge because of some computer glitch . It was management by information system. She could clearly see my status and still would not give me access because the computer woudl not let her. She should have override that be attentive to a customer and figure rhat out later

Economy seats always cramped, no meal on international flight, no plugs for electronics, but we got there and cabin crew was excellent.

Flight got canceled last minute and rescheduled 3 days later, as if we do not have jobs and children to return to. 5+ hours on hold with customer support with no answer. We booked a different airline and spent 3x as much to escape Montreal bc of Air Canada. Still haven’t heard from them. Boooo

Pros: The airplane was new and had in-flight entertainment (tablet behind seats) with new movies instead of watching on personal devices. Cons: the flight time was changed without informing us. When I booked the flight, the time was 13:30pm (also in the email confirmation). However, when I reached the airport, the time was conveniently changed to 14:55pm. When I asked at the counter, they said the flight always took off at this time. The booking was made by Air Canada, but the flight was operated by United.

Staff was very courteous and kept things organized. We will definitely use Air Canada for further travel

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

Information on your arrival and departure airports