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YOW - SEA

$224 Find cheap flights from Ottawa to Seattle

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 Seattle departing on 8/29. 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
0 bags
Mon 6/3
Mon 6/10

Search hundreds of travel sites at once for deals on flights to Seattle

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Ottawa to Seattle, 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 Seattle, as well as popular online travel agencies
In the last 7 days travelers have searched 43,369,418 times on KAYAK, and here is why:

Save 22% or moreCompare multiple travel sites with one search.

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

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Cheap flight deals from Ottawa to Seattle (YOW-SEA)

Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Ottawa to Seattle 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
8:00 am - 12:56 pmYOW-SEA
7h 56m1 stop
7:00 am - 7:14 pmSEA-YOW
9h 14m1 stop
$433WestJet
Find Deal
Thu, Aug 29 - Sun, Sep 1
5:30 am - 10:43 amYOW-SEA
8h 13m1 stop
5:55 am - 4:36 pmSEA-YOW
7h 41m1 stop
$437Air Canada
Find Deal
Sun, Jun 2 - Wed, Jun 5
6:05 am - 9:23 pmYOW-SEA
18h 18m1 stop
5:50 am - 4:41 pmSEA-YOW
7h 51m1 stop
Sat, Jun 8 - Tue, Aug 6
6:00 am - 12:56 pmYOW-SEA
9h 56m1 stop
7:00 am - 6:52 amSEA-YOW
20h 52m1 stop
$441WestJet
Find Deal
Sat, Jun 8 - Sat, Jun 15
8:00 am - 12:56 pmYOW-SEA
7h 56m1 stop
7:00 am - 12:42 amSEA-YOW
14h 42m1 stop
$442WestJet
Find Deal
Mon, Jun 3 - Mon, Jun 10
7:30 pm - 12:59 amYOW-SEA
8h 29m1 stop
11:10 pm - 10:58 amSEA-YOW
8h 48m1 stop
Tue, Jun 4 - Wed, Jun 19
7:20 am - 2:34 pmYOW-SEA
10h 14m1 stop
7:05 pm - 6:24 amSEA-YOW
8h 19m1 stop
$448Air Canada
Find Deal
Tue, Jun 25 - Fri, Jul 5
6:05 am - 9:23 pmYOW-SEA
18h 18m1 stop
7:05 pm - 8:42 amSEA-YOW
10h 37m2 stops
Sat, Jun 8 - Sat, Jun 15
7:30 pm - 7:57 amYOW-SEA
15h 27m2 stops
12:55 pm - 10:33 amSEA-YOW
18h 38m2 stops
$486United Airlines
Find Deal
Sat, Sep 7 - Tue, Sep 10
2:50 pm - 7:57 amYOW-SEA
20h 07m2 stops
8:10 am - 11:57 pmSEA-YOW
12h 47m1 stop
$487United Airlines
Find Deal
Sat, Sep 7 - Tue, Sep 10

Flights from Ottawa to Seattle - Travel Insights & Trends

Get data-powered insights and trends into flights from Ottawa to Seattle 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 Seattle?

The average price of all flights from Ottawa to Seattle clicked on KAYAK for each day over the last 12 months.
If you are looking for a flight deal from Ottawa to Seattle, look for departures on Saturdays and avoid leaving on a Monday, as it's usually the priciest day. When flying back from Seattle, Saturday is the cheapest day to fly and Friday is the most expensive.

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

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for flights from Ottawa to Seattle, 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 Seattle is January, where tickets cost $465 on average. On the other hand, the most expensive months are July and December, where the average cost of tickets is $623 and $616 respectively.

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

To calculate daily average prices, KAYAK takes all prices for each day before departure over the last year for flights from Ottawa to Seattle, 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 Seattle, you should book around 1 week before departure. For the absolute cheapest price, our data suggests you should book 57 days before departure.

Good to know

Low season

January

High season

December

Cheapest flight

$224
Best time to beat the crowds with an average 12% drop in price.
Most popular time to fly with an average 17% increase in price.
Flight from Ottawa to Seattle

When to book flights from Ottawa to Seattle

Are your dates flexible? Find out the best times to travel from Ottawa to Seattle 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 Seattle

  • What is the cheapest flight from Ottawa to Seattle?

    In the last 3 days, the lowest price for a flight from Ottawa to Seattle was $224 for a one-way ticket and $433 for a round-trip.

  • Do I need a passport to fly between Ottawa and Seattle?

    A passport is required to fly from Ottawa to Seattle.

  • Which airports will I be using when flying from Ottawa to Seattle?

    Ottawa and Seattle are both served by 1 main airport. You will leave Ottawa from Ottawa and will be arriving at Seattle/Tacoma Intl.

  • Which aircraft models fly most regularly from Ottawa to Seattle?

    We unfortunately don’t have that data for this specific route.

  • Which airline alliances offer flights from Ottawa to Seattle?

    Star Alliance is the only airline alliance operating flights between Ottawa and Seattle.

  • Which is the best airline for flights from Ottawa to Seattle, WestJet or United Airlines?

    The two airlines most popular with KAYAK users for flights from Ottawa to Seattle are WestJet and United Airlines. With an average price for the route of $552 and an overall rating of 7.5, WestJet is the most popular choice. United Airlines is also a great choice for the route, with an average price of $554 and an overall rating of 7.3.

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

    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 Seattle.

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

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

    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 Seattle with an airline and back to Ottawa with another airline. Booking your flights between Ottawa and SEA can sometimes prove cheaper using this method.

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

    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 Seattle 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 3 airlines serving from Ottawa to Seattle

 
See real verified KAYAK customer reviews for airlines flying from Ottawa to Seattle. 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 Seattle? 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
WestJetOverall score based on 2962 reviews
8.2Crew
6.5Entertainment
7.7Boarding
7.3Comfort
6.5Food
Airline reviews

Too many oversized carryon baggage. If carrier reduced checked luggage fee this could be avoided. The staff were friendly and helpful, very professional.

8.0 ExcellentRoy, May 2024YQT - YWG
Read more about WestJet reviews

Too many oversized carryon baggage. If carrier reduced checked luggage fee this could be avoided. The staff were friendly and helpful, very professional.

Nice smooth flight with pleasant stewards. Slept most of the flight, they could have slowly turned on the lights to make it more pleasant. Otherwise a good trip.

Great! No food was available during the flight due to the catering service strike but snacks were given throughout the flight which was nice.

I wish that seats closer to the front of the plan were available, but when I booked the flight the seats were VERY expensive so I did not book seats at that time. The day before flying only seats at the back of the plane were available. It takes so long to board the plane and empty the plane on arrival due to SO many roller bags.

Crew was rude.didn’t even say hi or welcome to board

Nothing special. Unacceptable wait for baggage on arriving in Calgary

Departure delay on a late night flight. Made us even later. Tired but got home.

Westjet forced me to put my carry-on baggage in check-in probably because I was assigned seat 23A (the last row seat), which had no cabin space, which is unfair. I wanted to carry on my luggage so that I don't have to wait at the airport for my luggage. Also, because there was no cabin space, I was forced to keep my laptop bag under the seat, which I didn't want to as I was carrying 2 laptops and charger. The airline should basically tell people that if you are assigned a last row seat, then you are not allowed a cabin baggage or a personal item.

Easy processing, flight time was quick and staff was professional and kind.

It was delayed by two ours very full no room to move

It was good! Appreciated that it was very on schedule so it made the connecting flight less stressful

Two flights,both poor. No entertainment. Cramped and uncomfortable seats, little space, the rest was OK. Staff were acceptable good.

I just wrote a text which was supposed to be for the flight from Denver to spokane not Frankfurt to Denver.

The crew was doing their best on an old plane needing updating. Chairs that creaked and wouldn’t stay in position. My tray table was unusable as was on-board entertainment due the audio needing usb earphones (that were not provided). Prior to boarding in Toronto and despite being scheduled for a wheelchair and assistance, we were dropped off by clubcar without a wheelchair which I found myself by a gate. Due to no boarding gate assigned at that time we waited and when it was, it subsequently was moved from 64 to 95. No help could be found so I pushed my husband’s chair to that furthest gate in the airport at the highest speed possible for a 73 year old. And by that I mean I ran. It was a very stressful experience.

Wifi wasn't working on one of the UA flights after boarding.

Leg room was lacking. Legs crammed into seat in front.

T hey did a great job. Flight was on time .

the plane was old. the wifi didn’t work. the entertainment was boring and dated. the charging ports were impossible to find. i was mostly ignored by flight attendants that had no problem speaking to the man beside me. i got two drinks the entire time i was on the plane.

Crew was not very helpful. They forgot to serve me coffee and had to wait for a long time.It looked as if they were not very happy with what they were doing.

The flight I was connecting with waited for me even though my 1st flight was late. I really appreciated that.

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.

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

Book cheap flights from Ottawa to Seattle

Recent one-way flight deals

 
Only flying one-way? Below are some of the best one-way flight deals from Ottawa to Seattle found on KAYAK in the last 72 hours.
8/29Thu
2 stopsWestJet
11h 46mYOW-SEA
$224
8/29Thu
1 stopWestJet
7h 56mYOW-SEA
$230
6/26Wed
2 stopsWestJet
24h 31mYOW-SEA
$262
6/26Wed
1 stop
14h 16mYOW-SEA
$267
6/28Fri
2 stopsWestJet
11h 46mYOW-SEA
$317
6/28Fri
1 stopWestJet
9h 56mYOW-SEA
$329
6/26Wed
3 stops
17h 04mYOW-SEA
$373

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Ottawa - Seattle Flights

Departure:

Ottawa (YOW)Canada

Destination:

Seattle (SEA)United States

Return flight deals:

Seattle - Ottawa

Cabin classes: