C$ 198 Find Cheap Flights from Ottawa to Washington

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 departing on 11/3. 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

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Ottawa to Washington, 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, as well as popular online travel agencies
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Flight Deals

Cheap Flights from Ottawa to Washington

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

Fri, 29 May - Mon, 8 Jun
WestJet Logo
1:20 p.m. - 6:45 p.m.
YOW
-
SEA
8h 25m
1 stop
WestJet Logo
7:35 p.m. - 5:40 a.m.
SEA
-
YOW
7h 05m
1 stop
C$ 313WestJet
Fri, 29 May - Mon, 8 Jun
WestJet Logo
6:15 p.m. - 6:45 p.m.
YOW
-
SEA
27h 30m
2 stops
WestJet Logo
7:35 p.m. - 5:40 a.m.
SEA
-
YOW
7h 05m
1 stop
C$ 337WestJet
Fri, 29 May - Mon, 8 Jun
WestJet Logo
6:15 p.m. - 6:45 p.m.
YOW
-
SEA
27h 30m
2 stops
WestJet Logo
7:35 p.m. - 12:30 p.m.
SEA
-
YOW
13h 55m
2 stops
C$ 373WestJet
Wed, 8 Apr - Tue, 14 Apr
WestJet Logo
5:45 p.m. - 2:19 p.m.
YOW
-
SEA
23h 34m
1 stop
WestJet Logo
3:10 p.m. - 12:39 a.m.
SEA
-
YOW
30h 29m
2 stops
C$ 412WestJet
Wed, 8 Apr - Tue, 14 Apr
WestJet Logo
5:45 p.m. - 2:19 p.m.
YOW
-
SEA
23h 34m
1 stop
WestJet Logo
3:10 p.m. - 12:39 a.m.
SEA
-
YOW
30h 29m
2 stops
C$ 414WestJet
Thu, 19 Mar - Thu, 26 Mar
Multiple Airlines Logo
10:35 a.m. - 8:58 a.m.
YOW
-
PDX
25h 23m
1 stop
Multiple Airlines Logo
12:52 p.m. - 12:39 a.m.
PDX
-
YOW
32h 47m
2 stops
C$ 672Multiple Airlines
Thu, 19 Mar - Thu, 26 Mar
Air Canada Logo
7:45 a.m. - 2:40 p.m.
YOW
-
PDX
9h 55m
1 stop
Air Canada Logo
7:05 p.m. - 6:43 a.m.
PDX
-
YOW
8h 38m
1 stop
C$ 684Air Canada
Tue, 10 Mar - Wed, 11 Mar
Air Canada Logo
7:45 a.m. - 2:40 p.m.
YOW
-
PDX
9h 55m
1 stop
Air Canada Logo
7:05 p.m. - 6:43 a.m.
PDX
-
YOW
8h 38m
1 stop
C$ 708Air Canada
Tue, 10 Mar - Wed, 11 Mar
Air Canada Logo
7:45 a.m. - 2:40 p.m.
YOW
-
PDX
9h 55m
1 stop
Air Canada Logo
7:05 p.m. - 6:43 a.m.
PDX
-
YOW
8h 38m
1 stop
C$ 709Air Canada
Tue, 10 Mar - Wed, 11 Mar
Air Canada Logo
5:45 a.m. - 2:40 p.m.
YOW
-
PDX
11h 55m
2 stops
Air Canada Logo
7:05 p.m. - 6:43 a.m.
PDX
-
YOW
8h 38m
1 stop
C$ 712Air Canada
Booking Insights

KAYAK's insights & trends for Ottawa to Washington flights

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

What is the cheapest month to fly from Ottawa to Washington?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Ottawa to Washington, 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 is January, when tickets cost C$ 434 (return) on average. On the other hand, the most expensive months are December and March, when the average cost of round-trip tickets is C$ 731 and C$ 597 respectively.

How far in advance should I book a flight from Ottawa to Washington?

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, 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 a flight from Ottawa to Washington, you should book around 3 weeks before departure, which saves you about 55% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 24 weeks before departure.

Good to know

Low seasonNovember
Cheapest flightC$ 198
Best time to beat the crowds but there is an average 3% increase in price.
Most popular time to fly and prices are also 1% lower on average.
Flight from Ottawa to Seattle

FAQs - booking Washington flights

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

    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.

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

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

    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 from Ottawa to Washington with an airline and back with another airline.

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

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

Reviews of the top 3 airlines flying from Ottawa to Washington

 
See real verified KAYAK customer reviews for airlines flying from Ottawa to Washington. 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? 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 9236 reviews
7.3Comfort
7.7Boarding
7.1Entertainment
8.1Crew
6.6Food
Airline reviews

Very poor. The flight was delayed from Toronto because some forget to do there job . I got to my connecting gate in San Francisco 10 minutes before the departure.but this didn’t let me board even though the flight was still there for an other 30 minutes. The the gentleman at the unite airline desk told me that they usually wait for passengers but air Canada called and told them not to we I been rerouted to Manila instead of Hong Kong . In San Francisco they mad me check in my carryon bag . I was told the it will directly go yo ho chi minn cuyt but I was told that by the Vietnams airline desk that’s not there I’m 10 hours behind my scheduled flight and looks like I I’m going without baggage. I don’t have a chance of catching ..

2.0 MediocreAnonymous, Feb 2026
YYZ - SFO
Read more United Airlines reviews

Very poor. The flight was delayed from Toronto because some forget to do there job . I got to my connecting gate in San Francisco 10 minutes before the departure.but this didn’t let me board even though the flight was still there for an other 30 minutes. The the gentleman at the unite airline desk told me that they usually wait for passengers but air Canada called and told them not to we I been rerouted to Manila instead of Hong Kong . In San Francisco they mad me check in my carryon bag . I was told the it will directly go yo ho chi minn cuyt but I was told that by the Vietnams airline desk that’s not there I’m 10 hours behind my scheduled flight and looks like I I’m going without baggage. I don’t have a chance of catching ..

It was great. There were some issues prior to takeoff. The weather was poor so we had to go through deicing, and we were delayed a bit by the pilots' concern about one of the engines, but that's aviation. The pilots handled everything with aplomb, and kept us apprised

Reliable, nice crew, I fly often on that flight and I like it all.

l really enjoy very much the flight was very pleasant

The Sears in the 800s are not too good perfect Airbus why cant the new 737 fix that

Quick and seamless boarding. No entertainment but fast Starlink wifi for this short trip and the staff was really friendly.

I dread trans-Pacific flights. They are very long. This was my first time on Universal, and it was my best crossing ever. The staff were professional, the hospitality was great, and the food was delicious. The entertainment system filled the long flight hours. I will seek out Universal flights from now onwards. 🙂

The food quality sucks. One must starve if they do not eat flesh Or wheat based products Some variety would be expected. The trivial amount of snacks and or food is inhumane

We Left Calgary 1/2 hour late and that made for a tight connection in Denver. After arriving everything was done to help us make our connection. That was a great effort. Thank You United

Efficient all round, very good crew. Short flight so the food, of course, was just snacks

As someone who never flies WestJet unless there is no other viable option I have to give this crew credit where credit is due. Extremely well done everyone.

Flight left on time. The crew was very friendly. I had to buy a proper meal. Small cookie and a drink just doesn’t cut it for a 4.5 hours flight.

Experience was good, the wifi hook up is somewhat tough

I will not be flying with westjet again. I was uncomfortable in my seat. The position made my back hurt so bad. My wife was able to fit the seatbelt around her with out an extension but was unable to put the tray table down or fit in the seat for that matter. Our bag was smashed and I spent two hours trying to fill out the application for a damaged bag before I gave up. The 80 photos I took would not work and nothing telling me the format to upload them as.. I made the mistake of unpacking the bag before taking photos so no claim for me. Next trip to Canada I will have to use air Canada.

They lost my bag. Hopefully it will be here tomorrow.

My luggage was damaged 1 wheel was out I can't find it nowhere

Took 3 hours to check in and drop off our suitcases. Half of the passengers were still in line by boarding time. The computer systems and staff were very slow. Staff were also disorganized and kept allowing later flights to skip lines. Suitcases were piling on that several other passengers didn't get their suitcases. Then, we were sitting in the plane for 2 hours and were told that the flight was overbooked. We missed our connecting flight and had to fly the following day but with a stop over. Good thing ONE WestJet customer rep was pleasant and actually knew how to do her job when we wanted to rebook to a direct flight. Thank you to Kim at Toronto airport. Terrible experience at PUJ. Won't go back to Dominican Republic.

Great seats, super comfortable, but no in flight entertainment which was a let down

Airplane is too small. Crew, especially the flight attendant who looked after our area, was not at all friendly and a touch authoratative. She may have been the most gruff flight attendant i've come across in 40 years of business travel

I when to Jamaica for my dad funeral and I did not get my luggage from westjet . I add to buy clothes putting me financial debt i did no want to be in Westjet did not call me to apologize are to inquire about my luggage I am still angry about it

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

Air Canada cancelled our flight and reschedule it 26 hours later that completely interrupted my family's long waited Japan trip, it wasn't due to natural reason such as weather but under the company's control. On the day we wasted 9 hours of our time from 6am to 3pm, including a few hours in the customer counter waiting for supervisor to handle our rescheduling. When we came to the counter for rebooking help there were at least 4 employees on the counter but we were told they were not trained to handle customer rebooking, we were also told the supervisor could come 10:30 to handle our rebooking, but she showed up more than one hour later, the end result was exactly the same so the few hours we spent waiting for her was completely wasted; We already prepaid hotel and all the tickets for the our stay in Tokyo so all of the cost for the first day is completed wasted; The $80 meal voucher issues was far less than our financial loss due to the financial cancellation, and it was not surprisingly invalid (as Your company screw up everything possible along the flight), the vouchers were supposed to last 72 hours, when we tried to used it at our lounge next day less than 24 hours from its issuing at a designated restaurant, the worker there couldn't scan the vouchers after multiple tries on all 4 vouchers issued, so we had to pay the food from our own money; For the two return flights they were also full of unfortunate events that caused bad experience and further delay and waste of our time, both flights departed late and the last leg had another significant delay of more than half an hour after touchdown, the gate was for some reason not available so we waited more than half an hour, when we got out of plane it was almost one hour later than the supposed arrival time; The gate you arranged is the farthest in Vancouver airport, also was the luggage pickup location in Seattle airport; We also called customer service for rescheduling help and after a long time wait (more than an hour) we got a call back but the CS representative was equally clueless and unhelpful. Other than a fatal crash, your company couldn't do anything right and provided the worst service possible among the tons of flights we have taken in our lives.

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.

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

Great flights. 90 minute departure delay for maintenance issues, not a great start but, afer that very good. Didn't pay extra for seats and lucked into a window and an aisle seat. Price was excellent at the super low economy level.

Just a little improvement on food but everything is excellent

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.

Everything you need to know for your flight from Ottawa to Washington

Information on your arrival and departure airports