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YOW - WAS

Find cheap flights from Ottawa to Washington, D.C. from $158

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 4/18. 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
0 bags
Sun 4/28
Sun 5/5

Search 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
In the last 7 days travelers have searched 46,342,885 times on KAYAK, and here is why:

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Filter your dealsChoose cabin class, free Wi-Fi and more.

Bundle and saveSave money when you bundle your flight + hotel.

Cheap flight deals from Ottawa to Washington, D.C.

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 and deals for you by selecting your travel dates.
Choose your dates
11:30 am - 3:52 pmYOW-IAD
4h 22m1 stop
5:20 pm - 9:29 pmIAD-YOW
4h 09m1 stop
$281Porter Airlines
Find Deal
Mon, Apr 29 - Wed, May 1
8:45 am - 12:07 pmYOW-IAD
3h 22m1 stop
5:20 pm - 9:29 pmIAD-YOW
4h 09m1 stop
$289Porter Airlines
Find Deal
Sun, Apr 28 - Wed, May 8
10:35 am - 12:13 pmYOW-DCA
1h 38mnonstop
6:00 am - 9:40 amDCA-YOW
3h 40m1 stop
$322Air Canada
Find Deal
Fri, Jun 7 - Sun, Jun 9
10:15 am - 11:59 amYOW-DCA
1h 44mnonstop
6:00 am - 9:40 amDCA-YOW
3h 40m1 stop
$323Air Canada
Find Deal
Sat, Apr 27 - Mon, May 6
5:55 pm - 7:23 amYOW-DCA
13h 28m1 stop
6:00 am - 9:40 amDCA-YOW
3h 40m1 stop
Sat, Apr 27 - Mon, May 6
6:03 pm - 10:35 pmYOW-IAD
4h 32m1 stop
8:30 am - 12:55 pmIAD-YOW
4h 25m1 stop
$349United Airlines
Find Deal
Mon, Jul 1 - Tue, Jul 9
7:30 pm - 9:13 pmYOW-IAD
1h 43mnonstop
6:30 am - 8:19 pmIAD-YOW
13h 49m1 stop
Thu, May 2 - Wed, May 8
6:03 pm - 10:32 pmYOW-IAD
4h 29m1 stop
10:19 pm - 11:59 pmIAD-YOW
1h 40mnonstop
$386United Airlines
Find Deal
Sat, Jun 29 - Mon, Jul 8
8:15 pm - 7:22 pmYOW-DCA
23h 07m2 stops
6:59 am - 8:48 pmDCA-YOW
13h 49m2 stops
$570WestJet
Find Deal
Fri, May 31 - Mon, Jun 3
8:15 pm - 8:18 pmYOW-BWI
24h 03m2 stops
6:00 am - 8:48 pmBWI-YOW
14h 48m2 stops
$570WestJet
Find Deal
Fri, May 31 - Mon, Jun 3

Flights from Ottawa to Washington, D.C. - Travel Insights & Trends

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 one-way flights from Ottawa to Washington, D.C..
Our data shows that the cheapest route for a one-way flight from Ottawa to Washington, D.C. cost $177 and was between Ottawa and Washington, D.C. Dulles Intl Airport. On average, the best prices are found if you fly this route. The average price for a return flight for this route is $170.

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

The average price of all flights from Ottawa to Washington, D.C. clicked on KAYAK for each day over the last 12 months.
When flying from Ottawa to Washington, D.C., you should consider leaving on a Monday and avoid Wednesdays if you are looking for the best rates. For your return to Ottawa, you’ll find the best rates on Wednesdays and the most expensive ones on Mondays.

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 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 $297 on average. On the other hand, the most expensive months are July and August, where the average cost of tickets is $454 and $437 respectively.

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

The average 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 $287, 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 daily average prices, KAYAK takes all prices for each day before departure over the last year for 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 month.
To get a below average price on the flight from Ottawa to Washington, D.C., you should book around 1 week before departure. For the absolute cheapest price, our data suggests you should book 78 days before departure.

Which airlines provide the cheapest flights from Ottawa to Washington, D.C.?

The cheapest price for the route for each airline clicked by KAYAK users in the last 72 hours.
The best deals for a one-way ticket found by KAYAK users over the last 3 days were on Porter Airlines ($158) and United Airlines ($182). The cheapest round-trip tickets were found on Porter Airlines ($281) and Air Canada ($322).

Which airlines fly non-stop between Ottawa and Washington, D.C.?

Airline and price data is aggregated from results in KAYAK’s search results from the last 2 weeks for flights from Ottawa to Washington, D.C..
There are 2 airlines that fly nonstop from Ottawa to Washington, D.C.. They are Air Canada and United Airlines. The cheapest airline for this route is Air Canada, with the best one-way deal found costing $159. On average, the best prices for this route can be found at Air Canada.

How many flights are there between Ottawa and Washington, D.C. per day?

Each day, there are between 3 and 4 nonstop flights that take off from Ottawa and land in Washington, D.C., with an average flight time of 1h 43m. The most common departure time is 9:00 am and most flights take off in the morning, while the most flights land at Washington, D.C. Dulles Intl Airport. Each week, there are 27 flights. The most frequent day of departure is Sunday, when 15% of all weekly flights depart. The fewest flights depart on a Saturday.

Which cabin class options are there for flights between Ottawa and Washington, D.C.?

The average price of flights for each cabin class for the route found by users searching on KAYAK over the last 2 weeks.
There are 4 cabin class options for the route. These are First, Business, Economy and Prem Economy. Perform a search on KAYAK to find the latest prices and availability for all cabin fares, which differ across airlines.

How long does a flight from Ottawa to Washington, D.C. take?

Nonstop flights from Ottawa generally make it to Washington, D.C. in 1h 38m. The flying distance between the two cities is 448 miles.

What’s the earliest departure time from Ottawa to Washington, D.C.?

Early birds can take the earliest flight from Ottawa at 9:45 am and will be landing in Washington, D.C. at 11:28 am.

What’s the latest departure time from Ottawa to Washington, D.C.?

If you prefer to fly at night, the latest flight from Ottawa to Washington, D.C. jets off at 7:30 pm and lands at 9:13 pm.

Good to know

Low season

January

High season

October

Cheapest flight

$158
Best time to beat the crowds but there is an average 11% increase in price.
Most popular time to fly and prices are also 8% 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 $158 for a one-way ticket and $281 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.?

    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 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., 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 $313 and an overall rating of 7.4, Porter Airlines is the most popular choice. United Airlines is also a great choice for the route, with an average price of $459 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

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 $217 or less one-way and $207 or less round-trip.

Prefer to fly non-stop from Ottawa to Washington, D.C.?

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

Nonstop departures

Ottawa to Washington, D.C.

Monday

Air Canada, Avianca, United Airlines

Air Canada, Avianca, +1 more

Tuesday

Air Canada, Avianca, United Airlines

Air Canada, Avianca, +1 more

Wednesday

Air Canada, Avianca, United Airlines

Air Canada, Avianca, +1 more

Thursday

Air Canada, Avianca, United Airlines

Air Canada, Avianca, +1 more

Friday

Air Canada, Avianca, United Airlines

Air Canada, Avianca, +1 more

Saturday

Air Canada, Avianca, United Airlines

Air Canada, Avianca, +1 more

Sunday

Air Canada, Avianca, United Airlines

Air Canada, Avianca, +1 more

See more direct flights

Nonstop returns

Washington, D.C. to Ottawa

Monday

Air Canada, Avianca, United Airlines

Air Canada, Avianca, +1 more

Tuesday

Air Canada, Avianca, United Airlines

Air Canada, Avianca, +1 more

Wednesday

Air Canada, Avianca, United Airlines

Air Canada, Avianca, +1 more

Thursday

Air Canada, Avianca, United Airlines

Air Canada, Avianca, +1 more

Friday

Air Canada, Avianca, United Airlines

Air Canada, Avianca, +1 more

Saturday

Air Canada, Avianca, United Airlines

Air Canada, Avianca, +1 more

Sunday

Air Canada, Avianca, United Airlines

Air Canada, Avianca, +1 more

See more direct flights
See more direct flights

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

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 KAYAK reviews.
7.4
United AirlinesOverall score based on 11470 reviews
72comfort
81crew
71entertainment
74overall
67food
77boarding
Airline reviews

Plane didn’t even make it off the ground. We all had to get off and walk to a different terminal (lots of confusion) to get on a different plane. Landed fairly late, connections missed.

Read more about United Airlines

Plane didn’t even make it off the ground. We all had to get off and walk to a different terminal (lots of confusion) to get on a different plane. Landed fairly late, connections missed.

One of the best flying experiences I’ve ever had.

The flight cancellation and process for getting a new flight was not that clear. United also had some delays that were unexpected. I am the most disappointed by the fact that I originally bought a Lufthansa ticket, only to be flown by United.

Need to have more snacks for the duration and coffee.

Great crew, friendly. Found the trip long just sitting with no onboard entertainment

Crowded flight, but upbeat and kind crew. Pilot greeted us at door, flight attendant thanked a number of “special” passengers for their business, another addressed an eight-year old boy as “young man.” United obviously trying to up their game, but though all of that is nice and notable, flying still feels like moving along a human assembly line, being herded into one small space after another (boarding areas with too few seats, planes with limited personal space, shuttles (IAD) packed too full.

On time - really well operated flight. Friendly staff. Super impressed with United on this round trip.

It was ok until we got to DC and I wanted to use my United Club pass and the snobbish receptionist said that they don’t take one pass. It took me everything itch of patience not to tell her off

Food choice was poor and we had to buy on board snacks.

We were offer chocolate cookies , not everyone eat chocolate. Thank you

Check in was slow because of passenger ahead in Reserve line. Seats were somewhat uncomfortable.

First time with Porter. Amazing experience overall, will be my airline of choice in North America whenever possible. Liked the quality of food and how it was served but one suggestion- a hot meal on the longer flights, perhaps?

Delayed by 2.5 hours. This happened previously on my flight from YOW to YVR on Dec. 26.2023. This is a terrible airline. The reason was there was lack of ground crew. This is a known event. AVOID PORTER AIRLINES IF YOU CAN. There is a reason half the plane was empty.

The airline arrival at the downtown airport is a big plus.. Food and beverage was excellent. Their non weather related cancellation is horrible. Overall I gave the airline 7 over 10 Tips for people flying porter from Boston. The airline doesn’t have inflight entertainment No TV No WIFI. Bring your entertainment with you.

The airline arrival at the downtown airport is a big plus.. Food and beverage was excellent. Their non weather related cancellation is horrible. Overall I gave the airline 7 over 10

Wasn’t on the flight- again. Bad weather in Halifax and I was in an accident. What a poor experience to have to pay for all this flight and not be on it

I didn’t make my flight due to poor weather and I had an accident driving there. I tried to get my money back or even credit and nothing. I have an entire flight both to Florida and back that I paid for and no one will give me any money back. I know this isn’t just Porter and it’s 3rd party- however airlines should allow these companies to take money for things they don’t get. I’m so upset. Who can afford a full flight they never take?

Flight Ottawa to Toronto canceled and no crew was available to direct me on what to do. I opened a file and I wait to be compensated.

New jet. Lots of leg room. On time departure. Early arrival. Reasonable airfare. Excellent online experience.

I had checked in online the day before but was instructed to collect our boarding passes when we arrived. I am not completely comfortable using the automated Kiosks and always enjoy the nostalgia of speaking with someone when checking in for a flight. Upon doing so however, we were immediately asked,"did you check in online already?" To which I replied, "yes, but we were asked to retrieve our boarding passes upon arrival." She then said, "that's what those machines over there are for. We really encourage people to use those." That unfortunately sparked a series of shortness and overall poor behavior in my opinion from the woman who checked us in. I understand it was early in the morning but I am always excited to experience flying and that interaction has unfortunately left a bitter taste in my mouth to the point I will forever now hesitate to book with Porter again. Thank you for taking the time to read this. Cheers, JD

The boarding process in Toronto bad as they share space with domestic flights and when those domestic flights come in you are locked out behind closed doors until they are done and then its a mad rush to get your boarding gates and board. This is not so much due to Air Canada but with the GTAA, but Air Canada could use different gates especially early morning in order to prevent such travel angst.

Terrible quality wifi and they charge a lot for it. They nickel and dime you for everything.

Not happy with Air Canada . Flight was cancelled got the run around trying to get another flight that was direct none to be found ended up going to Denver then onto Austin adding 7 hours to our trip. Was travelling with some one who had walking issues that’s why we were happy to have a direct flight then it didn’t happen adding more stress on her

Well you cancelled our direct flight to Austin from Toronto granted you got us on another flight but sent us to Denver then onto Austin delaying our arrival time in Austin by 7 hrs I was flying with 3 other people none of us were happy with our Air Canada experience

I wish there had been more seat options...when I tried to book, there were only.middle seats available. Do travel agents get first pick??

As is pretty much the norm with Air Canada now, we left late from the gate (45 minutes late). This is my 12th flight with AC in the last 12 months and 10 of those flights were either late or cancelled. AC essentially has a monopoly in Canada so they have carte blanche to charge exorbitant rates now and give poor service, with no repercussions.

A 2 hour delay because they couldn’t fit some oversized cargo in the small hold doors of an Embraer! Surely they know the sizes before attempting to load it?

-kayak did not give me advanced notice to my e-mail for my flight and I had major trouble finding the code to access Air Canada’s site because you did not provide it to me and incompetent Air Canada did not have any access based on my name alone. WTF -The flight was delayed twice. -They moved the boarding area -They said I would give free checked baggage because the plane was full and they charged me over $30 -They didn’t get my luggage on to the plane and left without it and I’m heading to a cruise ship. -I have lost one FULL day of my limited holiday and had to cancel scheduled events because my luggage did not get on the plane (even though the plane was delayed). -The “wheresmyluggage.com site is a total incompetent disaster that caused additional stress. -I will be sharing this experience

Plane was a Rouge vacation flyer for some reason. No legroom and entertainment. People were desperately looking for USB ports and such. And then there is this notorious and unsolved space problem where not all carry-on fits in the cabin….

They did not have any meal options left on the menu. Only snacks.

Book cheap flights from Ottawa to Washington, D.C.

Recent one-way flight deals

 
Only flying one-way? Below are some of the best one-way flight deals from Ottawa to Washington, D.C. found on KAYAK in the last 72 hours.
4/18Thu
1 stopPorter Airlines
4h 22mYOW-IAD
$158
5/12Sun
1 stopPorter Airlines
4h 32mYOW-IAD
$167
4/18Thu
nonstopUnited Airlines
1h 43mYOW-IAD
$182
6/26Wed
nonstopAir Canada
1h 41mYOW-IAD
$185
6/26Wed
1 stopAir Canada
4h 24mYOW-DCA
$185
4/8Mon
1 stop
13h 59mYOW-BWI
$193
4/8Mon
1 stop
14h 19mYOW-BWI
$196
5/12Sun
nonstopUnited Airlines
1h 43mYOW-IAD
$226
4/18Thu
2 stopsDelta
11h 26mYOW-IAD
$272
4/10Wed
2 stopsDelta
11h 26mYOW-IAD
$305

Search by stops

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Last minute flights from Ottawa to Washington, D.C.

Last minute flight, train and bus deals

 
These last-minute flight deals are the cheapest flights found on KAYAK in the last 72 hours for flights from Ottawa to Washington, D.C. that are departing in the next 10 days.
3/31Sun
multi-stopPorter Airlines
4h 32mYOW-IAD
4/7Sun
multi-stopPorter Airlines
3h 24mIAD-YOW
$489
3/31Sun
multi-stopPorter Airlines
3h 22mYOW-IAD
4/1Mon
multi-stopPorter Airlines
4h 09mIAD-YOW
$538
3/31Sun
nonstop
1h 44mYOW-DCA
4/7Sun
nonstop
1h 31mDCA-YOW
$545
3/31Sun
nonstop
1h 44mYOW-DCA
4/7Sun
multi-stop
5h 47mDCA-YOW
$550
3/31Sun
nonstopUnited Airlines
1h 43mYOW-IAD
4/7Sun
nonstopUnited Airlines
1h 37mIAD-YOW
$554
3/31Sun
multi-stopUnited Airlines
5h 31mYOW-IAD
4/7Sun
nonstopUnited Airlines
1h 37mIAD-YOW
$565
3/31Sun
multi-stopAir Canada
11h 52mYOW-DCA
4/7Sun
multi-stopAir Canada
5h 47mDCA-YOW
$598
3/31Sun
nonstopAir Canada
1h 43mYOW-IAD
4/1Mon
nonstopAir Canada
1h 42mIAD-YOW
$624
3/29Fri
multi-stopDelta
13h 28mYOW-DCA
4/1Mon
multi-stopDelta
11h 19mDCA-YOW
$796
3/31Sun
multi-stopDelta
13h 28mYOW-DCA
4/7Sun
multi-stopDelta
11h 19mDCA-YOW
$970

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Ottawa - Washington, D.C. Flights

Departure:

Ottawa (YOW)Canada

Return flight deals:

Washington, D.C. - Ottawa

Cabin classes:

$2,217
$1,053
$1,650
$170