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$145 Find cheap flights from Toronto Pearson Airport 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 Pearson Intl to Seattle departing on 6/11. 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 6/7
Fri 6/14

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 Toronto to Seattle.
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Toronto to Seattle.
In the last 7 days travelers have searched 43,968,530 times on KAYAK, and here is why:

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Cheap flight deals from Pearson Intl to Seattle (YYZ-SEA)

Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Pearson Intl 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
8:20 pm - 8:45 amYYZ-SEA
15h 25m1 stop
9:28 am - 6:42 amSEA-YYZ
18h 14m1 stop
Sun, Jun 2 - Wed, Jun 5
8:00 pm - 8:32 amYYZ-SEA
15h 32m1 stop
9:49 am - 6:35 amSEA-YYZ
17h 46m1 stop
Tue, Jun 11 - Tue, Jun 18
8:20 pm - 8:45 amYYZ-SEA
15h 25m1 stop
9:49 am - 6:35 amSEA-YYZ
17h 46m1 stop
Sun, Jun 2 - Tue, Jun 11
8:00 am - 2:48 pmYYZ-SEA
9h 48m1 stop
7:00 am - 5:22 pmSEA-YYZ
7h 22m1 stop
$301WestJet
Find Deal
Fri, Sep 20 - Sat, Sep 28
8:00 am - 2:46 pmYYZ-SEA
9h 46m1 stop
7:00 am - 6:04 pmSEA-YYZ
8h 04m1 stop
$302WestJet
Find Deal
Fri, Aug 30 - Sat, Sep 7
7:40 pm - 9:58 pmYYZ-SEA
5h 18mnonstop
10:40 am - 9:01 pmSEA-YYZ
7h 21m1 stop
$326Air Canada
Find Deal
Thu, May 23 - Tue, Jun 4
7:45 am - 12:27 pmYYZ-SEA
7h 42m1 stop
10:40 am - 9:01 pmSEA-YYZ
7h 21m1 stop
$331Air Canada
Find Deal
Fri, May 24 - Wed, May 29
6:45 am - 7:21 pmYYZ-SEA
15h 36m1 stop
10:52 pm - 2:29 pmSEA-YYZ
12h 37m1 stop
$345American Airlines
Find Deal
Fri, May 31 - Sun, Jun 9
6:30 am - 7:48 pmYYZ-SEA
16h 18m1 stop
11:35 pm - 10:29 amSEA-YYZ
7h 54m1 stop
$348American Airlines
Find Deal
Mon, Jun 10 - Mon, Jun 10
1:00 pm - 6:45 pmYYZ-SEA
8h 45m1 stop
11:59 pm - 9:58 amSEA-YYZ
6h 59m1 stop
$426United Airlines
Find Deal
Wed, May 22 - Fri, May 31

Flights from Pearson Intl to Seattle - Travel Insights & Trends

Get data-powered insights and trends into flights from Pearson Intl 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 Toronto Pearson Airport to Seattle?

The average price of all flights from Toronto Pearson Intl Airport to Seattle clicked on KAYAK for each day over the last 12 months.
Your flight ticket price will generally be cheaper if you fly to Seattle on a Monday and more expensive on a Sunday. On your return trip to Toronto Pearson Airport, you should consider flying back on a Tuesday, and avoid Mondays for better deals.

What is the cheapest month to fly from Toronto Pearson Intl Airport to Seattle?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for flights from Toronto Pearson Intl Airport 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 Toronto Pearson Intl Airport to Seattle is October, where tickets cost $490 on average. On the other hand, the most expensive months are December and March, where the average cost of tickets is $611 and $577 respectively.

How far in advance should I book a flight from Toronto Pearson Intl Airport to Seattle?

To calculate daily average prices, KAYAK takes all prices for each day before departure over the last year for flights from Toronto Pearson Intl Airport 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 Toronto Pearson Intl Airport to Seattle, you should book around 3 weeks before departure. For the absolute cheapest price, our data suggests you should book 50 days before departure.

Which airlines provide the cheapest flights from Toronto Pearson Airport to Seattle?

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 WestJet ($173) and Air Canada ($185). The cheapest round-trip tickets were found on WestJet ($301) and Alaska Airlines ($319).

Which airlines fly non-stop between Toronto Pearson Intl Airport and Seattle?

Airline and price data is aggregated from results in KAYAK’s search results from the last 2 weeks for flights from Toronto Pearson Intl Airport to Seattle.
There are 2 airlines that fly nonstop from Toronto Pearson Intl Airport to Seattle. They are Air Canada and Alaska Airlines. The cheapest airline for this route is Alaska Airlines, with the best one-way deal found costing $248. On average, the best prices for this route can be found at Alaska Airlines.

How many flights are there between Toronto Pearson Intl Airport and Seattle per day?

Each day, there are 3 nonstop flights that take off from Toronto Pearson Intl Airport and land in Seattle, with an average flight time of 5h 17m. The most common departure time is 7:00 pm and most flights take off in the afternoon. Each week, there are 21 flights and there are the same amount of flights each day 3.

Which cabin class options are there for flights between Toronto Pearson Intl Airport and Seattle?

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 3 cabin class options for the route. These are 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 Toronto Pearson Airport to Seattle take?

Nonstop flights from Toronto Pearson Airport generally make it to Seattle in 5h 15m. The flying distance between the two cities is 2,054 miles.

What’s the earliest departure time from Toronto Pearson Airport to Seattle?

Early birds can take the earliest flight from Toronto Pearson Intl Airport at 8:25 am and will be landing in Seattle at 10:43 am.

What’s the latest departure time from Toronto Pearson Airport to Seattle?

If you prefer to fly at night, the latest flight from Toronto Pearson Intl Airport to Seattle jets off at 7:40 pm and lands at 9:58 pm.

Good to know

Low season

January

High season

August

Cheapest flight

$145
Best time to beat the crowds with an average 10% drop in price.
Most popular time to fly and prices are also 4% lower on average.
Flight from Toronto Pearson Airport to Seattle

When to book flights from Pearson Intl to Seattle

Are your dates flexible? Find out the best times to travel from Pearson Intl 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 Toronto Pearson Airport to Seattle flights

  • What is the cheapest flight from Toronto Pearson Intl Airport to Seattle?

    In the last 3 days, the lowest price for a flight from Toronto Pearson Intl Airport to Seattle was $145 for a one-way ticket and $261 for a round-trip.

  • Do I need a passport to fly between Toronto Pearson Airport and Seattle?

    Yes, you’ll need a passport to travel to Seattle from Toronto Pearson Airport.

  • Which airlines offer Wi-Fi service onboard planes from Toronto Pearson Airport to Seattle?

    Air Canada, Alaska Airlines, United Airlines, and Jazz offer inflight Wi-Fi service on the Toronto Pearson Airport to Seattle flight route.

  • Which aircraft models fly most regularly from Toronto Pearson Airport to Seattle?

    The Airbus A220-300 is the aircraft model that flies most regularly on the Toronto Pearson Airport to Seattle flight route.

  • Which airline alliances offer flights from Toronto Pearson Airport to Seattle?

    Star Alliance, and oneworld are the airline alliances operating flights between Toronto Pearson Airport and Seattle, with Star Alliance being the most commonly used for this route.

  • On which days can I fly direct from Toronto Pearson Airport to Seattle?

    There are nonstop flights from Toronto Pearson Airport to Seattle on a daily basis.

  • Which is the best airline for flights from Toronto to Seattle, Delta or Alaska Airlines?

    The two airlines most popular with KAYAK users for flights from Toronto to Seattle are Delta and Alaska Airlines. With an average price for the route of $519 and an overall rating of 8.0, Delta is the most popular choice. Alaska Airlines is also a great choice for the route, with an average price of $463 and an overall rating of 8.0.

  • How does KAYAK find such low prices on flights from Toronto Pearson Airport 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 Toronto Pearson Airport to Seattle.

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

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Seattle from Toronto Pearson Airport 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 Toronto Pearson Airport 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 Toronto Pearson Airport with another airline. Booking your flights between Toronto Pearson Airport 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 Toronto Pearson Airport 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 Toronto Pearson Airport 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 YYZ to Seattle

  • Looking for a cheap flight? 25% of our users found flights on this route for $269 or less one-way and $306 or less round-trip.

Prefer to fly non-stop from Toronto Pearson Airport to Seattle?

Find which airlines fly direct from Pearson Intl to Seattle/Tacoma Intl, which days they fly and book direct flights.

Nonstop departures

Toronto Pearson Intl to Seattle/Tacoma Intl

Monday

Air Canada, Alaska Airlines, Brussels Airlines, +1 more

Air Canada, Alaska Airlines, +2 more

Tuesday

Air Canada, Alaska Airlines, Brussels Airlines, +1 more

Air Canada, Alaska Airlines, +2 more

Wednesday

Air Canada, Alaska Airlines, Brussels Airlines, +1 more

Air Canada, Alaska Airlines, +2 more

Thursday

Air Canada, Alaska Airlines, Brussels Airlines, +1 more

Air Canada, Alaska Airlines, +2 more

Friday

Air Canada, Alaska Airlines, Brussels Airlines, +1 more

Air Canada, Alaska Airlines, +2 more

Saturday

Air Canada, Alaska Airlines, Brussels Airlines, +1 more

Air Canada, Alaska Airlines, +2 more

Sunday

Air Canada, Alaska Airlines, United Airlines, +1 more

Air Canada, Alaska Airlines, +2 more

See more direct flights

Nonstop returns

Seattle/Tacoma Intl to Toronto Pearson Intl

Monday

Air Canada, Alaska Airlines, Brussels Airlines, +2 more

Air Canada, Alaska Airlines, +3 more

Tuesday

Air Canada, Alaska Airlines, Brussels Airlines, +2 more

Air Canada, Alaska Airlines, +3 more

Wednesday

Air Canada, Alaska Airlines, Brussels Airlines, +2 more

Air Canada, Alaska Airlines, +3 more

Thursday

Air Canada, Alaska Airlines, Brussels Airlines, +2 more

Air Canada, Alaska Airlines, +3 more

Friday

Air Canada, Alaska Airlines, Turkish Airlines, +2 more

Air Canada, Alaska Airlines, +3 more

Saturday

Air Canada, Alaska Airlines, Brussels Airlines, +1 more

Air Canada, Alaska Airlines, +2 more

Sunday

Air Canada, Alaska Airlines, Brussels Airlines, +2 more

Air Canada, Alaska Airlines, +3 more

See more direct flights
See more direct flights

Top 5 airlines serving from Pearson Intl to Seattle

 
See real verified KAYAK customer reviews for airlines flying from Toronto 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 Pearson Intl 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.
8.0
DeltaOverall score based on 10789 reviews
8.0Entertainment
7.4Food
8.6Crew
7.9Comfort
8.2Boarding
Airline reviews

Delta is one of the best airlines I have flown

10.0 ExcellentKellie, Apr 2024ANC - SEA
Read more about Delta reviews

Delta is one of the best airlines I have flown

It was a Red-Eye flight so was not comfortable enough to sleep, but seat was as expected. Crew was great and in-flight entertainment was excellent. Flight was smooth

Standard economy seats on Deltas 767 were better than Alaska premium seats on their 737 MAX9; more legroom, wider seats. Entertainment was great, no ipad or phone required. Could have included a meal service.

Plane was turned around due to fog half way into the flight, Delta did not properly direct passengers to stay on same flight and instead failed to properly rebook on Alaska

The boarding process was terrible especially with an indirect flight Chicago to Seattle to San Diego was terrible talking about we overbooked a flight idk if I’d take this airline ever again we got off our flight from Chicago to Seattle and we traveled for business and they told us our connecting flight was over booked and their was no seats asking people to take a delayed next flight and they don’t tell anyone coughing to wear masks seats 30A-B were terrible during the flight no one wants to sit next to people coughing all around I don’t want to be sick traveling for work or get sick anytime it’s very upsetting the staff doesn’t take this stuff serious to tell them to wear masks when they see people coughing and sneezing

Flight was on time, the crew was personable & professional, & the plane arrived early which was nice.

This flight landed early, but deplaned late. We were stuck sitting and waiting for a gate for over an hour

My flight was very clean and the location was comfortable. The service was great. A satisfying flight!

I appreciated being upgraded. I was very disappointed with my 13 hr layover in Seattle to geg, while my friends who flew Alaska made it home as scheduled. I had to reserve a hotel on my dime.

Delta needs to step up the meals and snacks. They have been serving the same two meals for three years.... It is time to change it up.

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

They seem to have squeezed out a little more legroom in these planes! It was very nice to not have to fold in half to fit in the seats!

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.

Use planes with TVs on flights over 4 hours. The free entertainment was a cheap in between solution for a very long flight that you don't even bother providing meals or decent snacks.

Even though we left CMI late, we mostly made up the time.

Delayed almost 4 hours for a 45 minute flight with no explanation.

Again, multiple delays and I eventually just canceled and drove!

Great crew. We were delayed so that late passengers could get on the flight. Love the bedding in business class. Good food. Great experience.

The CX617 from HK to BKK was delayed more than 1.5 hours.

Horrible - they lied to me about baggage & boarding, even though I specifically spoke to their agents the day before my flight about my issue. When I showed up they did not let me board and stranded me at my airport until I bought a new flight with money I did not have to spend.

All four American Airlines flights I took in last seven days were delayed. Caused me loads of problems, missed meetings, loss of time and money.

American cancelled our flight home. Zero option for hotel, alternative transportation and took 3 hours to find our bags so we could take a 3 hour UBER ride home on our dime. Never flying AA again.

They gave my seat away although it was a connecting flight with them and the flight was a bit delayed.

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 Toronto to Seattle

Recent one-way flight deals

 
Only flying one-way? Below are some of the best one-way flight deals from Toronto to Seattle found on KAYAK in the last 72 hours.
6/11Tue
1 stop
15h 12mYYZ-SEA
$145
6/11Tue
1 stop
15h 32mYYZ-SEA
$157
8/15Thu
2 stopsWestJet
11h 21mYYZ-SEA
$173
6/11Tue
2 stopsWestJet
11h 20mYYZ-SEA
$174
8/13Tue
nonstopAir Canada
5h 26mYYZ-SEA
$185
8/9Fri
1 stopAir Canada
8h 15mYYZ-SEA
$190
5/28Tue
1 stopAmerican Airlines
13h 50mYYZ-SEA
$200
5/17Fri
1 stopUnited Airlines
18h 02mYYZ-SEA
$218
5/17Fri
1 stopAmerican Airlines
17h 20mYYZ-SEA
$277
6/20Thu
nonstopUnited Airlines
5h 18mYYZ-SEA
$287

Search by stops

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Last minute flights from Pearson Intl to Seattle

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 Toronto to Seattle that are departing in the next 10 days.
5/9Thu
multi-stopAir Canada
9h 22mYYZ-SEA
5/13Mon
nonstopAir Canada
4h 38mSEA-YYZ
$372
5/10Fri
multi-stopDelta
9h 17mYYZ-SEA
5/19Sun
multi-stopDelta
9h 20mSEA-YYZ
$378
5/10Fri
multi-stopAir Canada
8h 31mYYZ-SEA
5/21Tue
multi-stopAir Canada
11h 56mSEA-YYZ
$401
5/9Thu
multi-stop
15h 25mYYZ-SEA
5/13Mon
multi-stop
31h 00mSEA-YYZ
$440
5/9Thu
multi-stop
15h 25mYYZ-SEA
5/13Mon
multi-stop
23h 10mSEA-YYZ
$446
5/11Sat
multi-stopWestJet
28h 56mYYZ-SEA
5/15Wed
multi-stopWestJet
13h 00mSEA-YYZ
$497
5/11Sat
multi-stopWestJet
17h 41mYYZ-SEA
5/19Sun
multi-stopWestJet
7h 25mSEA-YYZ
$528
5/9Thu
nonstopUnited Airlines
5h 18mYYZ-SEA
5/15Wed
multi-stopUnited Airlines
7h 54mSEA-YYZ
$680
5/13Mon
multi-stopAlaska Airlines
9h 48mYYZ-SEA
5/19Sun
nonstopAlaska Airlines
4h 40mSEA-YYZ
$1,271
5/13Mon
multi-stopAlaska Airlines
9h 48mYYZ-SEA
5/17Fri
nonstopAlaska Airlines
4h 40mSEA-YYZ
$1,329

Search by stops

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Toronto Pearson Airport - Seattle Flights

Departure:

Toronto Pearson Airport (undefined)Canada

Destination:

Seattle (SEA)United States

Return flight deals:

Seattle - Toronto Pearson Airport

Cabin classes:

$557
$1,796
$233