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YOW - IAD

C$ 225 Find cheap flights from Ottawa to Washington Dulles Airport

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 Dulles Intl departing on 12/6. 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
0 bags
Fri 7/6
Fri 14/6

Search hundreds of travel sites at once for deals on flights to Washington Dulles Airport

 
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, travellers have searched 43,968,530 times on KAYAK, and here is why:

Save 21% or moreCompare multiple travel sites with one search.

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

Cheap flight deals from Ottawa to Dulles Intl (YOW-IAD)

Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Ottawa to Dulles Intl 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
7:10 a.m. - 11:37 a.m.YOW-IAD
4h 27m1 stop
5:20 p.m. - 9:29 p.m.IAD-YOW
4h 09m1 stop
C$ 355Porter Airlines
Find Deal
Tue, 11 Jun - Wed, 12 Jun
8:45 a.m. - 12:07 p.m.YOW-IAD
3h 22m1 stop
1:00 p.m. - 4:29 p.m.IAD-YOW
3h 29m1 stop
C$ 374Porter Airlines
Find Deal
Sun, 16 Jun - Mon, 17 Jun
7:10 a.m. - 11:37 a.m.YOW-IAD
4h 27m1 stop
5:20 p.m. - 9:29 p.m.IAD-YOW
4h 09m1 stop
C$ 377Porter Airlines
Find Deal
Fri, 21 Jun - Mon, 24 Jun
7:30 p.m. - 9:11 p.m.YOW-IAD
1h 41mdirect
8:35 a.m. - 12:45 p.m.IAD-YOW
4h 10m1 stop
C$ 386
Find Deal
Tue, 11 Jun - Wed, 12 Jun
7:30 p.m. - 9:11 p.m.YOW-IAD
1h 41mdirect
10:19 p.m. - 11:59 p.m.IAD-YOW
1h 40mdirect
C$ 412United Airlines
Find Deal
Mon, 3 Jun - Thu, 11 Jul
6:00 p.m. - 10:29 p.m.YOW-IAD
4h 29m1 stop
10:15 p.m. - 11:55 p.m.IAD-YOW
1h 40mdirect
C$ 433United Airlines
Find Deal
Fri, 24 May - Sun, 26 May
2:49 p.m. - 4:30 p.m.YOW-IAD
1h 41mdirect
10:15 p.m. - 11:55 p.m.IAD-YOW
1h 40mdirect
C$ 440Air Canada
Find Deal
Thu, 23 May - Sun, 26 May
10:00 a.m. - 3:15 p.m.YOW-IAD
5h 15m1 stop
10:15 p.m. - 11:55 p.m.IAD-YOW
1h 40mdirect
C$ 478Air Canada
Find Deal
Mon, 17 Jun - Wed, 19 Jun
8:35 a.m. - 1:22 p.m.YOW-IAD
4h 47m1 stop
8:25 a.m. - 3:52 p.m.IAD-YOW
31h 27m3 stops
C$ 597
Find Deal
Sat, 25 May - Mon, 27 May
10:00 a.m. - 11:41 a.m.YOW-IAD
1h 41mdirect
10:19 p.m. - 11:59 p.m.IAD-YOW
1h 40mdirect
C$ 601Lufthansa
Find Deal
Mon, 22 Jul - Mon, 29 Jul

Flights from Ottawa to Dulles Intl - Travel Insights & Trends

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

What’s the cheapest day of the week to fly from Ottawa to Washington Dulles Airport?

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

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

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for flights from Ottawa to Washington, D.C. Dulles Intl Airport, 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. Dulles Intl Airport is November, where tickets cost C$ 446 on average. On the other hand, the most expensive months are July and February, where the average cost of tickets is C$ 653 and C$ 555 respectively.

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

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. Dulles Intl Airport, 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. Dulles Intl Airport, you should book around 2 weeks before departure. For the absolute cheapest price, our data suggests you should book 65 days before departure.

Which airlines provide the cheapest flights from Ottawa to Washington Dulles Airport?

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 (C$ 225) and Air Canada (C$ 241). The cheapest round-trip tickets were found on Porter Airlines (C$ 355) and United Airlines (C$ 412).

Which airlines fly direct between Ottawa and Washington, D.C. Dulles Intl Airport?

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. Dulles Intl Airport.
There is just one airline that flies from Ottawa to Washington, D.C. Dulles Intl Airport direct and that is United Airlines. The best one-way deal found from United Airlines for the route is C$ 318.

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

Each day, there are between 2 and 3 nonstop flights that take off from Ottawa and land in Washington, D.C. Dulles Intl Airport, with an average flight time of 1h 43m. The most common departure time is 9:00 a.m. and most flights take off in the afternoon. Each week, there are 20 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. Dulles Intl Airport?

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 Dulles Airport take?

Direct flights from Ottawa generally make it to Washington Dulles Airport in 1h 40m. The flying distance between the two cities is 1,164 km.

What’s the earliest departure time from Ottawa to Washington Dulles Airport?

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

What’s the latest departure time from Ottawa to Washington Dulles Airport?

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

Good to know

Low season

January

High season

August

Cheapest flight

C$ 225
Best time to beat the crowds (4% less expensive on average)
Most popular time to fly and prices are also 7% lower on average.
Flight from Ottawa to Washington Dulles Airport

When to book flights from Ottawa to Dulles Intl

Are your dates flexible? Find out the best times to travel from Ottawa to Dulles Intl 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 Ottawa to Washington Dulles Airport flights

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

    In the last 3 days, the lowest price for a flight from Ottawa to Washington, D.C. Dulles Intl Airport was C$ 164 for a one-way ticket and C$ 259 for a round-trip.

  • Which airports will I be using when flying from Ottawa to Washington Dulles Airport?

    Ottawa airport is called Ottawa and the only airport in Washington Dulles Airport is Washington, D.C. Dulles Intl.

  • Which airlines offer Wi-Fi service onboard planes from Ottawa to Washington Dulles Airport?

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

  • Which aircraft models fly most regularly from Ottawa to Washington Dulles Airport?

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

  • Which airline alliances offer flights from Ottawa to Washington Dulles Airport?

    Star Alliance is the only airline alliance operating flights between Ottawa and Washington Dulles Airport.

  • On which days can I fly direct from Ottawa to Washington Dulles Airport?

    There are direct flights from Ottawa to Washington Dulles Airport 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$ 440 and an overall rating of 7.5, Porter Airlines is the most popular choice. United Airlines is also a great choice for the route, with an average price of C$ 529 and an overall rating of 7.4.

  • How does KAYAK find such low prices on flights from Ottawa to Washington Dulles Airport?

    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 Dulles Airport.

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

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

  • What is the Hacker Fare option on flights from Ottawa to Washington Dulles Airport?

    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 Dulles Airport 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 Dulles Airport?

    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 Dulles Airport 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 C$ 384 or less one-way and C$ 838 or less round-trip.

Prefer to fly non-stop from Ottawa to Washington Dulles Airport?

Find which airlines fly direct from Ottawa to Dulles Intl, which days they fly and book direct flights.

Nonstop departures

Ottawa to Washington, D.C. Dulles Intl

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 nonstop flights

Nonstop returns

Washington, D.C. Dulles Intl 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 nonstop flights
See more nonstop flights

Top 3 airlines serving from Ottawa to Dulles Intl

 
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 Dulles Intl? 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.
7.5
Porter AirlinesOverall score based on 423 reviews
7.6Comfort
7.7Boarding
8.3Crew
6.7Entertainment
7.5Food
Airline reviews

First time with Porter and I can say this is best airline company in Canada. Great service, free WiFi, free snack and drinks (including beer and wine). Seats were super comfy on the Embraer jet and I appreciated the folding try table too. Staff were excellent both legs of the trip.

10.0 ExcellentJustin, Apr. 2024YVR - YYZ
Read more about Porter Airlines reviews

First time with Porter and I can say this is best airline company in Canada. Great service, free WiFi, free snack and drinks (including beer and wine). Seats were super comfy on the Embraer jet and I appreciated the folding try table too. Staff were excellent both legs of the trip.

Tight transfer in Montreal. (15 min) However, we made it, as did my luggage.

Flight was smooth and comfortable. The crew were exceptional. Amanda, Nichole and Hershel were attentive to our every need. So friendly. My daughter and I were surprised at quality of service. Loved the double row seating. Snacks were delicious. We would definitely fly with Porter again. Flight PD 670 SFO to YYZ Thank you so much for the best flight experience we have had

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?

Only water and pretzels served on six hour flight. Did not see crew rest of flight. No video screens and so no wired audio. Poor sound on plan so did not understand anything said by crew. This is a safety issue. Electrical socket did not retain charging block so could not charge phone. No video screen so could not watch movies. Phone is not a substitute.

The food that was offered based on class level of your ticket was absolutely ridiculous and disgusting. They didn't even hot tea to serve, the food was horrible. On our departure flight I was seated in premium plus economy and considering the cost of the flight the food was literally some of the worst I've ever eaten. On the return flight I sat in economy with extra leg room and was given a thin little throw "blanket" and a flimsy little pillow. The air condition was on artic and the seating arrangement wasn't really worth the money. The seat didn't recline good enough and the foot rest was laughable. Total waste.

All flights were on time and boarding was issue free

Water service would be great. The way they board is terrible. Slow passengers first😂😂 They need to smart up a bit

I like the non stop flight to Lagos. The cabin crew were great, the food was alright and the ride was smooth. The downside is there wasn’t wifi connection from Lagos to Washington as stated. The 11hrs flight, became boring at times because of no wifi.

It got me where I needed it to; not much more. It had no competition so that was why I chose it.

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.

I liked the early check in. Flight was a bit bumpy due yo weather. Overall, everything went well.

Limited snack options cause the snack vendor was on strike

It was an excellent experience, traveling from Toronto to Denver with United.

Ontime boarding. Almost 1 hour take off delay. We could have boarded slightly later since the pilots were in traffic

This was the first AC flight in a long time that we experienced no delays or frustrations. The gate attendant was extremely polite and accommodating to my husband who has Parkinson’s disease which made boarding extremely stress free. Flight departed ON TIME and was a smooth ride. If only all my AC experiences could be like this.

I didn’t like the fact that all the customs officers went to lunch so I was in line for 90 minutes due to where the staff directed me. We were told three very different reasons for why the plane was delayed. It was a crowded plane with difficult storage situations for the Carry On bags. The Air Canada airline staff were all very good and professional. I was so disappointed in my cheese and fruit box as the cheese had molded and the fruit wasn’t fresh so I couldn’t eat the majority of the food. This was the last meal I could find as the restaurants had closed when I got in to my destination. I think you could work on improving the food quality.

Once again my complaint is how close the seats are together. Also, the bathrooms were not very clean by the second half of the flight.

Excellent in flight service, perhaps the best we've ever had. Business class feels tired and needs improvement to compete with other airlines. The food looked good but tasted terrible. Check in was quick, the flight arrived early and our luggage was on our flight with us.

The staff were so kind and helpful. We flew back from NY with another airline and it was horrible. We will always stick with Air Canada as everything was far better!

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.

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.
12/6Wed
1 stopPorter Airlines
4h 22mYOW-IAD
C$ 225
22/5Wed
1 stopPorter Airlines
4h 27mYOW-IAD
C$ 231
24/5Fri
1 stopPorter Airlines
4h 22mYOW-IAD
C$ 238
24/5Fri
directAir Canada
1h 41mYOW-IAD
C$ 241
5/6Wed
1 stopAir Canada
5h 15mYOW-IAD
C$ 256
5/6Wed
directUnited Airlines
1h 41mYOW-IAD
C$ 279
22/5Wed
3 stops
20h 37mYOW-IAD
C$ 304
5/6Wed
2 stops
23h 19mYOW-IAD
C$ 352
12/6Wed
2 stopsUnited Airlines
13h 26mYOW-IAD
C$ 389
7/7Sun
2 stopsWestJet
18h 23mYOW-IAD
C$ 664

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Last minute flights from Ottawa to Dulles Intl

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.
10/5Fri
multi-stopPorter Airlines
4h 22mYOW-IAD
17/5Fri
multi-stopPorter Airlines
4h 09mIAD-YOW
C$ 708
12/5Sun
multi-stopPorter Airlines
6h 17mYOW-IAD
13/5Mon
multi-stopPorter Airlines
3h 29mIAD-YOW
C$ 782
9/5Thu
multi-stopPorter Airlines
4h 27mYOW-IAD
12/5Sun
multi-stopPorter Airlines
3h 24mIAD-YOW
C$ 827
12/5Sun
directUnited Airlines
1h 43mYOW-IAD
13/5Mon
directUnited Airlines
1h 37mIAD-YOW
C$ 839
12/5Sun
multi-stopAir Canada
5h 36mYOW-IAD
13/5Mon
directAir Canada
1h 37mIAD-YOW
C$ 846
9/5Thu
directAir Canada
1h 43mYOW-IAD
12/5Sun
directAir Canada
1h 37mIAD-YOW
C$ 876
9/5Thu
direct
1h 43mYOW-IAD
12/5Sun
multi-stop
4h 31mIAD-YOW
C$ 890
10/5Fri
direct
1h 43mYOW-IAD
17/5Fri
multi-stop
10h 13mIAD-YOW
C$ 911
10/5Fri
directAir Canada
1h 43mYOW-IAD
17/5Fri
directAir Canada
1h 42mIAD-YOW
C$ 1,074
9/5Thu
multi-stop
19h 05mYOW-IAD
12/5Sun
multi-stop
4h 59mIAD-YOW
C$ 1,153

Search by stops

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Ottawa - Washington Dulles Airport Flights

Departure:

Ottawa (undefined)Canada

Destination:

Washington Dulles Airport (IAD)United States

Return flight deals:

Washington Dulles Airport - Ottawa

Cabin classes:

C$ 1,983
C$ 1,547
C$ 948
C$ 472