YYZ - SEA

$114 Find Cheap Flights from Toronto 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 Toronto to Seattle departing on 2/26. 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.
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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.
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Cheap Flight Deals from Toronto 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 Toronto 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.

Recent round-trip flight deals from Toronto to Seattle

Recommended round-trip deals departing in the coming months from the most popular airlines that fly from Toronto to Seattle.
Discover the best prices and deals for you by selecting your travel dates.
Choose your dates
7:25 pm - 11:46 amYYZ-SEA
19h 21m1 stop
9:48 am - 5:55 amSEA-YYZ
17h 07m1 stop
Tue, Mar 11 - Tue, Mar 25
7:25 pm - 11:46 amYYZ-SEA
19h 21m1 stop
9:48 am - 5:55 amSEA-YYZ
17h 07m1 stop
Tue, Mar 11 - Tue, Mar 25
7:55 am - 2:21 pmYYZ-SEA
9h 26m1 stop
2:05 pm - 12:24 amSEA-YYZ
7h 19m1 stop
$212WestJet
Find Deal
Mon, Apr 21 - Fri, May 2
7:40 am - 2:21 pmYYZ-SEA
9h 41m1 stop
3:15 pm - 5:58 amSEA-YYZ
11h 43m2 stops
$217WestJet
Find Deal
Wed, Mar 5 - Wed, Mar 12
7:05 pm - 9:30 pmYYZ-SEA
5h 25mnonstop
6:05 am - 1:50 pmSEA-YYZ
4h 45mnonstop
$221Air Canada
Find Deal
Fri, Feb 21 - Fri, Feb 28
4:20 pm - 6:44 pmYYZ-SEA
5h 24mnonstop
7:15 am - 2:55 pmSEA-YYZ
4h 40mnonstop
$222Alaska Airlines
Find Deal
Mon, Feb 24 - Tue, Mar 25
7:10 pm - 9:35 pmYYZ-SEA
5h 25mnonstop
6:05 am - 2:00 pmSEA-YYZ
4h 55mnonstop
$223Air Canada
Find Deal
Thu, Mar 27 - Sun, Mar 30
7:05 pm - 9:30 pmYYZ-SEA
5h 25mnonstop
11:59 pm - 12:25 pmSEA-YYZ
9h 26m1 stop
$232United Airlines
Find Deal
Mon, Feb 24 - Fri, Feb 28
2:00 pm - 10:53 pmYYZ-SEA
11h 53m1 stop
5:15 am - 7:56 pmSEA-YYZ
11h 41m1 stop
$247United Airlines
Find Deal
Thu, Mar 27 - Sun, Mar 30
4:20 pm - 6:44 pmYYZ-SEA
5h 24mnonstop
12:43 am - 1:00 pmSEA-YYZ
9h 17m1 stop
$266Alaska Airlines
Find Deal
Thu, Feb 20 - Tue, Feb 25

Flights from Toronto to Seattle - Travel Insights & Trends

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

The average price of all round-trip flights from Toronto Pearson Intl Airport to Seattle clicked on KAYAK for each day over the last 12 months.
If your flying dates are flexible, you should consider flying to Seattle on a Wednesday, as we generally find the cheapest rates on that day for this route. On the other hand, Sunday is the most expensive day to fly from Toronto to Seattle. For your return ticket, we recommend flying on a Wednesday and avoiding Sundays for the best 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 round-trip 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 February, where tickets cost $270 (return) on average. On the other hand, the most expensive months are March and May, where the average cost of round-trip tickets is $507 and $491 respectively.

Can I save money by flying with a layover from Toronto Pearson Intl Airport to Seattle?

The average round-trip 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 $585, prices are generally cheapest when you fly direct.

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

To calculate weekly average prices, KAYAK takes all prices for each week before departure over the last year for round-trip 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 week.
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 7 weeks before departure.

Good to know

Low season

January

High season

August

Cheapest flight

$114
Best time to beat the crowds with an average 26% drop in price.
Most popular time to fly with an average 5% increase in price.
Flight from Toronto to Seattle

When to book flights from Toronto to Seattle

Are your dates flexible? Find out the best times to travel from Toronto 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 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 $114 for a one-way ticket and $201 for a round-trip.

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

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

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

    All the following airlines offer inflight Wi-Fi service on the Toronto to Seattle flight route: Air Canada, United Airlines, Alaska Airlines, Jazz, Delta, American Airlines, and WestJet.

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

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

  • Which airline alliances offer flights from Toronto to Seattle?

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

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

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

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

    The two airlines most popular with KAYAK users for flights from Toronto to Seattle are Alaska Airlines and Delta. With an average price for the route of $414 and an overall rating of 8.0, Alaska Airlines is the most popular choice. Delta is also a great choice for the route, with an average price of $472 and an overall rating of 8.0.

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

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

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Seattle from Toronto 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 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 with another airline. Booking your flights between Toronto 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 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 up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

See more FAQs

KAYAK’s top tips for finding a cheap flight from Toronto Pearson Intl Airport to Seattle

  • Looking for a cheap flight? 25% of our users found flights on this route for $196 or less one-way and $251 or less round-trip.

Prefer to fly direct from Toronto to Seattle?

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

Direct departures

Toronto Pearson Intl to Seattle/Tacoma Intl

Monday

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

Air Canada, Alaska Airlines, +3 more

Tuesday

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

Air Canada, Alaska Airlines, +2 more

Wednesday

Air Canada, Alaska Airlines, Brussels Airlines, +3 more

Air Canada, Alaska Airlines, +4 more

Thursday

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

Air Canada, Alaska Airlines, +2 more

Friday

Air Canada, Alaska Airlines, Brussels Airlines, +3 more

Air Canada, Alaska Airlines, +4 more

Saturday

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

Air Canada, Alaska Airlines, +2 more

Sunday

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

Air Canada, Alaska Airlines, +3 more

See more direct flights

Direct returns

Seattle/Tacoma Intl to Toronto Pearson Intl

Monday

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

Air Canada, Alaska Airlines, +2 more

Tuesday

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

Air Canada, Alaska Airlines, +3 more

Wednesday

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

Air Canada, Alaska Airlines, +3 more

Saturday

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

Air Canada, Alaska Airlines, +2 more

Sunday

Air Canada, Alaska Airlines, Brussels Airlines, +3 more

Air Canada, Alaska Airlines, +4 more

See more direct flights
See more direct flights

Top 5 airlines serving from Toronto 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 Toronto 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
Alaska AirlinesOverall score based on 9688 reviews
7.1Entertainment
7.9Comfort
7.1Food
8.2Boarding
8.5Crew
Airline reviews

Alaska Airlines misleads customers. Our flight was booked as a direct flight, and they added a stop without informing anyone. Do not fly Alaskan Airlines.

2.0 MediocreRyan, Feb 2025YVR - SEA
Read more Alaska Airlines reviews

Alaska Airlines misleads customers. Our flight was booked as a direct flight, and they added a stop without informing anyone. Do not fly Alaskan Airlines.

The flight was canceled so i booked another flight with Delta, so essentially there was absolutely nothing that i enjoyed about my experience with this flight

Probably the worst 1st Class I have ever experienced. Sam, our flight attendant, was excellent. Other than that, everything from the Alaska Longe experience to the buggy app to the uncomfortable flight and uncommunicative agents were poor. The agent who booked us in forgot to mark TSA PreCheck on our boarding passes and we had to go back to get this done. They were a cut below every other airline we have experienced in just about every area.

my first time with Alaska Airlines, an exceptional airline with great employees.

The plane was late arriving at the airport which in turn we left late. I had to literally run to my next gate to catch my connecting flight and my luggage did not show up at my final destination.

Seattle flight to Walla Walla has a confusing doorway system . Small signs once you leave gate area to tarmac. Almost went the wrong way to my plane.

Please don't shrink the seat space any more, as United has done. Thanks for all your good work.

The flight was delayed almost an hour causing many passengers to be at jeopardy of missing their connecting flights. There was no help in providing passengers help with connections or allowing passengers with connecting flights to exit the plane in an expediated manner.

Hadn't flown for a while the crew was wonderful! Trip was great. My only challenge is navigating the airports. Getting from one plane to the next! All on all nice trip!

Nothing! I just didn't eat or use entertainment. I had three seats all to myself and it was wonderful!!!!

Everything was ok!! Just bags came up a little be late.

Tasty snacks. On-time departure and early arrival. Luggage arrived quickly at the carrousel. The only negative was a man behind us that was heavily inebriated. He was served 3 double drinks during the flight. There was no telling how much he had before the flight. He was so out of it that he spilled a drink and broke the heavy liquor glass on the floor. I don't believe he should have been served so much alcohol on a two-hour flight.

Kind staff. Snacks are small but that’s the new normal.

The young man who was our flight attendant in first class was lazy and did not do his job well at all. Never offered drinks upon boarding - actually I take that back... said "are you okay with water" as if I do not want to get you anything else, only passed the snacks around once, got my drink order wrong and then never offered a second round of drinks. He was the worst I have ever seen on Delta and we fly a lot.

Flight left early and arrived early. the whole trip was excellent.

Overall, it was okay. Seat was a little cramped. Would’ve liked more substantial snacks or opportunity to buy some.

Inexpensive, got an exit row aisle aeat with no middle passenger, bought a great breakfast sandwich, flight comfortable & arrived ahead of schedule.

Very dissatisfied with the fact that I had upgraded to first class for the second part of my trip only to find out that the lounge was still not available to me, as well as not having any food or drink service on the flight due to weather, so I lost out more than what I paid for.

Delta was great the entertainment was outdated. Screen was very small and didn’t work.

The seats are uncomfortable, feels like a small seat pad on plywood.

The seats on this flight were almost roomy enough to be the basic amount needed for human existence. I think my favorite part of this flight was it landed at an A gate, which was the most palatial part of Sea-Tac I've ever seen - a massive improvement from the S gates.

The seats on this flight were almost roomy enough to be the basic amount needed for human existence.

Plane 3 hours late. Missed connection. No help from gate staff. App horrible. Lost connection repeatedly. No service desk. Finally got help from young girl driving cart.

Not as good as expected Air Can needs to improve totally rated on internet as worst

The flight was delayed, it took longer than anticipated because of weather, and they broke my luggage.

Everything was good. Flight was on time, luggage pickup was quick. The staff were great. Could not ask for anything more.

lots of delays the crew were unclear about where to pick up my carry-on, which they took from me to check in on the plane.

They needed people to check a bag, they did check my bag and I had to wait 10 minutes after the flight to get it it wasn’t too bad

HORRIBLE WITH THEIR WEBSITE!!! WORST WEBSITE IN THE WHOLE AIRLINE INDUSTRY

It was 4 hours late. Almost missed my connecting flight no food or drinks on connecting flight. Overall terrible experience

Lost my luggage. Filed a report and there is no response. Received a phone call from another airline that said they had the bag and they did not know what to do with it

Very good over all , would have been nice to have entertainment on the flight

Absolutely the worst airline I have ever taken. They lost my baggage and told me my bag tags had been cancelled. When my bags arrived days later I had to pick them up at 3:15 am. My return flight was delayed another 6 hours and they broke my bag. Westjet does nothing to try and make it a better customer experience and all the customers services representatives I spoke with were useless and incompetent. Never flying westjet again.

Easy self checkin and baggage drop. No in seat entertainment, but wifi and app worked well

it's all good nothing you can do make better 😌

Single flights to Cancun purchased through third-party, initially had issues printing luggage labels with the lady at the airport Pearson… Was super friendly and assisted quickly despite being very busy

Very old planes. Seats were not comfortable. Air was not on during the flight leading to incredibly stuffy conditions.

The flight was on time and shorter time arrival than planned. I was an ultra basic passenger and understood one personal item on the plane. The announcements of one personal item and zone 9 boarding certainly felt like we were separated from the rest. Actually zone 9 passengers should be boarded second; we are not blocking aisles and can be seated much faster and deboarded faster too.

Still sitting in a hotel when I'm due for work

Delays happen but communication and care were very low on what ended up being a long day.

I like the free beer and wine but not the delays to the departure time.

Never again flying economy on Rouge!!! Literally like sardines!!! Will try to change to better seats 3 seat arrangement only so so if traveling with family. Who wants to squished to stranger!!😖 Can’t say enough bad about this!!!

I booked and paid extra for exit door seats also pre paid for my luggage air Canada changed plains and I never got what I paid for and they made me pay for luggage again they also did this to my wife. They are the most unorganized company I have ever dealt with. I am sure I will never see the extra money I paid for the seats or the recharge for the luggage. They are subsidized by the taxpayers and don’t give a dam just a horrible way to do business

Overall the experience was excellent. Plane was clean but more importantly quiet. Recently, I’ve noticed that Airbus planes seem quieter than their Boeing counterparts. I definitely prefer flying in an Airbus plane.

Delay after delay.......they are awful Delayed because of cold wx really!!!!! We live in Canada

My one complaint was that while we boarded using the standard enclosed gangway, when we arrived at SEATAC, the ground crew were slow to hook up the stairs. After reaching the tarmac we had to walk up a long ramp all outside in 35° weather. We just came from Bali and did not have warm weather clothes. This was in addition to having to collect our bags in Vancouver, take them through security again and then having to show our passports 4 more times all within the Air Canada section.

So we didn't actually go. We were hoping to go for the Inauguration of the first female president. When That Guy got elected, we bailed. Unfortunately, we got basically none of our money back, despite having travel insurance. Would not fly with Air Canada again unless I had to.

flight was delayed, there was open communication about the delay the delay pushed way past the posted delay time and

This was my first time flying on Air Canada and the experience was good and pleasant enough, great crew members and the price I paid was amazing,

This was my first time and the experience was good and pleasant enough, great crew members and the price I paid was amazing,

Everything you need to know for your flight from Toronto to Seattle

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