YTO - SEA

C$ 175 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 2/4. 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 (YTO-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
8:00 p.m. - 8:43 a.m.YYZ-SEA
15h 43m1 stop
12:30 p.m. - 6:43 a.m.SEA-YYZ
15h 13m1 stop
C$ 287
Find Deal
Wed, 2 Apr - Tue, 15 Apr
8:00 p.m. - 11:35 a.m.YYZ-SEA
18h 35m1 stop
4:16 p.m. - 6:43 a.m.SEA-YYZ
11h 27m1 stop
C$ 288
Find Deal
Tue, 8 Apr - Tue, 15 Apr
6:30 a.m. - 2:21 p.m.YKF-SEA
10h 51m1 stop
3:15 p.m. - 1:16 a.m.SEA-YKF
7h 01m1 stop
C$ 366WestJet
Find Deal
Mon, 7 Apr - Mon, 14 Apr
9:00 a.m. - 8:28 p.m.YYZ-SEA
14h 28m2 stops
2:05 p.m. - 12:24 a.m.SEA-YYZ
7h 19m1 stop
C$ 372WestJet
Find Deal
Thu, 1 May - Tue, 6 May
8:30 a.m. - 10:51 a.m.YYZ-SEA
5h 21mdirect
2:55 p.m. - 1:09 a.m.SEA-YYZ
7h 14m1 stop
C$ 527Air Canada
Find Deal
Thu, 5 Jun - Sun, 8 Jun
4:45 p.m. - 6:59 p.m.YYZ-SEA
5h 14mdirect
7:15 a.m. - 3:00 p.m.SEA-YYZ
4h 45mdirect
C$ 583Alaska Airlines
Find Deal
Fri, 2 May - Sun, 4 May
12:25 p.m. - 7:37 p.m.YTZ-SEA
10h 12m1 stop
7:20 a.m. - 7:50 p.m.SEA-YTZ
9h 30m1 stop
C$ 599Air Canada
Find Deal
Fri, 2 May - Sun, 4 May
4:30 p.m. - 6:50 p.m.YYZ-SEA
5h 20mdirect
7:15 a.m. - 3:00 p.m.SEA-YYZ
4h 45mdirect
C$ 599Alaska Airlines
Find Deal
Sat, 5 Apr - Wed, 23 Apr
4:10 p.m. - 11:50 a.m.YYZ-SEA
22h 40m2 stops
11:59 p.m. - 9:58 a.m.SEA-YYZ
6h 59m1 stop
C$ 626United Airlines
Find Deal
Mon, 17 Mar - Mon, 24 Mar
6:55 p.m. - 9:57 p.m.YYZ-SEA
30h 02m1 stop
11:45 p.m. - 5:09 p.m.SEA-YYZ
14h 24m2 stops
C$ 643United Airlines
Find Deal
Fri, 14 Mar - Sun, 6 Apr

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 is the cheapest Toronto to Seattle flight route?

The cheapest price for flight routes found by users searching on KAYAK in the last 2 weeks for round-trip flights from Toronto to Seattle.
Our data shows that the cheapest route for a return flight from Toronto to Seattle cost C$ 329 and was between Toronto Pearson Intl Airport (YYZ) and Seattle (SEA). On average, the best prices are found if you fly this route. The average price for a return flight for this route is C$ 329.

What’s the cheapest day of the week to fly from Toronto to Seattle?

The average price of all round-trip flights from Toronto to Seattle clicked on KAYAK for each day over the last 12 months.
For Toronto to Seattle, Thursday is the cheapest day to fly on average and Sunday is the most expensive. Flying from Seattle back to Toronto, the best deals are generally found on Thursday, with Tuesday being the most expensive.

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

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Toronto 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 to Seattle is January, where tickets cost C$ 378 (return) on average. On the other hand, the most expensive months are May and July, where the average cost of round-trip tickets is C$ 683 and C$ 680 respectively.

Can I save money by flying with a layover from Toronto 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.
Yes, flying with a layover may cost you more time, but you can also save money on the route, with a 2 stops layover the cheapest option at C$ 861 on average.

How far in advance should I book a flight from Toronto 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 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 to Seattle, you should book around 3 weeks before departure. For the absolute cheapest price, our data suggests you should book 9 weeks before departure.

Good to know

Low season

January

High season

August

Cheapest flight

C$ 175
Best time to beat the crowds (34% less expensive on average)
Most popular time to fly (4% more expensive on average)
Flight from Toronto Pearson Airport 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 flights from Toronto to Seattle

  • Is there accommodation at Seattle-Tacoma Airport?

    There are several hotels situated to the east of Seattle-Tacoma Airport where travelers can find comfortable accommodation. Top-rated hotels like Hilton Seattle Airport & Conference Center, Seattle Airport Marriott, and the Radisson Hotel provide top-notch service to travelers.

  • Which services for passengers with limited mobility are available at Toronto Pearson Airport?

    Apps like BlindSquare and Aira are available at Toronto Pearson Airport to help those with sight loss to navigate through the vast airport with ease. There are also accessible self-service check-in kiosks, wheelchair-accessible restrooms, and an in-terminal shuttle service.

  • Which transportation means are available to Toronto Pearson Airport from Downtown Toronto?

    The Union Pearson Express train provides a fast and efficient transportation means to Toronto Pearson Airport. The public transit buses, rideshares, taxis, and shuttles offer alternative means of transport to the bustling Toronto Pearson Airport.

  • Are there special services at Seattle-Tacoma Airport for VIP passengers?

    VIP passengers receive special treatment at Seattle-Tacoma Airport. Upon arrival, VIPs get the meet and greet service, after which they are escorted to the VIP lounge, which has plenty of refreshments and exclusive services.

  • How do I get to Seattle city center from Seattle-Tacoma International Airport (SEA)?

    There are seven ways to get from Seattle-Tacoma International Airport (SEA) to the city center. You can use a town car, shuttle, taxi, bus 156, bus 150, or a tram to drive to the city center. The bus is the recommended means, with Flixbus operating between the destinations regularly. However, a shuttle is the fasted means.

  • What are the parking options at Toronto Pearson International Airport (YYZ)?

    You'll need a parking lot if you're accessing the YYZ with your vehicle. You can park and Park'N Fly with both valet and self-parking options. Value Park Lot, Dixon Park Lot, and Aerospot Toronto outdoor parking offer affordable parking charges.

  • Which hotels are near Seattle-Tacoma International Airport (SEA)?

    Passengers arriving late at the airport shouldn’t worry about where to spend their night since the airport houses several hotels. Skyway Inn & Airport Parking, Rodeway, and Motel 6 Seattle-WA, Airport are the top hotels near the airport. However, its proximity makes Crowne Plaza Seattle Airport Hotel more convenient. It's located across the sky bridge.

  • What are the flight options for passengers traveling from Toronto to Seattle?

    Several airlines offer one-stop flights from Toronto Pearson International Airport (YYZ) to Seattle-Tacoma International Airport (SEA). Air Canada, Delta, WestJet, and United Airlines are some carriers you’ll encounter.

  • What is the cheapest flight from Toronto to Seattle?

    In the last 3 days, the lowest price for a flight from Toronto to Seattle was C$ 123 for a one-way ticket and C$ 202 for a round-trip.

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

    When flying out of Toronto you will be using one of these airports: Toronto Region of Waterloo Intl, Toronto Island, or Toronto Pearson Intl. You will be landing at Seattle/Tacoma Intl.

  • 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, Delta, Jazz, WestJet, and American Airlines.

  • 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 Star Alliance being the most commonly used for this route.

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

    There are direct 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 C$ 581 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 C$ 643 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.

  • 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 to Seattle

  • Looking for a cheap flight? 25% of our users found flights on this route for C$ 260 or less one-way and C$ 380 or less round-trip.
  • If you want to fly nonstop to Seattle from Toronto Pearson Airport (YYZ), you can find some direct flights operated by Air Canada. There are also many other options that require at least one or two layovers at either Dallas Fort Worth, Charlotte Douglas, Detroit, Chicago, Denver, Atlanta, San Antonio, Sacramento, or Salt Lake City.
  • You can take the light rail from Seattle-Tacoma Airport (SEA), but if you have luggage and want a more convenient transportation means, rideshares or cabs are a great choice. Shuttles like the Shuttle Express are affordable alternative transportation means to Downtown Seattle.
  • Take a trip back in time to the Jurassic period while at Toronto Pearson Airport. The impressive dinosaur model displays are found in Terminal 1.
  • Seattle-Tacoma Airport has several lounges for travelers looking for a quiet place to relax during lengthy layovers. The cozy Alaska Lounge, located on Concourse C and D, is accessible for about C$ 63. The lounge has runway views, a pancake machine, and a Starbucks coffee machine.
  • Toronto Pearson Airport has multiple parking lots for those looking for a safe place to leave their vehicle. The long-term parking lot charges around C$ 63 a day. The Daily Park is available at around C$ 31, the Express Park at around C$ 41, and the Value Park at about C$ 25 a day.
  • Seattle-Tacoma Airport does provide luggage trolleys for a small fee. If you wish to leave your bag shortly, there is a baggage storage facility at the airport’s terminal building reclaim section.
  • Those bringing the entire family on their trip to Seattle-Tacoma Airport have will appreciate the family toilets, the baby rooms on Concourse A, nursing rooms at Concourse A and D, and kids play zones near the central terminal. In case you bring pets with you, the pet relief area on Concourse D will come in handy.
  • Toronto Pearson Airport serves as a hub for several airlines operating flights from Toronto to Seattle, including WestJet, American, and Delta Air Lines.
  • Travellers moving from Toronto to Seattle have a couple of airports. Still, the journey is likelier to begin at Toronto Pearson International Airport (YYZ) and end at Seattle-Tacoma International Airport (SEA). The two major airports in Toronto and Seattle, respectively, are the hubs of international flights between the two destinations.
  • Passengers traveling to Seattle through Toronto Pearson International Airport (YYZ) have several options when it comes to getting into the airport. You can access the airport Terminal 3 by train, which takes about 43 minutes, or a bus, taking approximately the same time. However, the fastest means is by taxi, 22 minutes.
See more tips

Prefer to fly direct from Toronto to Seattle?

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

Direct departures

Toronto 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 nonstop flights

Direct returns

Seattle/Tacoma Intl to Toronto

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 nonstop flights
See more nonstop 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 9702 reviews
8.2Boarding
7.1Food
7.1Entertainment
7.9Comfort
8.5Crew
Airline reviews

Flight was delayed about 45 min and they never offered an explanation. Peruse, staff were friendly and competent and the flight was safe.

8.0 ExcellentDavid, Feb 2025AUS - SEA
Read more Alaska Airlines reviews

Flight was delayed about 45 min and they never offered an explanation. Peruse, staff were friendly and competent and the flight was safe.

The staff did a great job and there was one delay

No TSA pre check on boarding passes. Was told known traveler numbers are only kept with Alaska Airlines mileage plan members. Did not notice until reached the head of line, and then was sent back through the line to general boarding which took almost an hour. Learned two things: check our boarding passes, which we haven’t had to do with our other airlines, and don’t fly Alaska! You used to be much better!

The would have rated higher, but I asked for a cup of coffee twice and never got one. Later found the crew sitting in the back having a meal and visiting. Just saying.

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.

Boarding is, as it always is… horrible. Gate lice. Slow moving zones. Too many people with carry ons

I loved having a most black flight crew during Black History Month; rather by design or accident I appreciated the representation. ❤️

This was the second flight this week with flight attendant Marcus I’m not sure if his last name is Lane or Lang but this guy is awesome. He funny, attentive and his service is 5 stars. Marcus makes business travel more enjoyable !

Although the flight left late, we arrived early. It was one of the quickest boarding and off boarding experiences I’ve had. It was kind of annoying the only drinks they had were water, coffee, and tea. The flight was very smooth, temperature was just right, and flight attendants were friendly.

Lower number on this flight so spaced out passengers. Able to enjoy more room to relax during flight. It was lovely.

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.

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.

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

Flight cancelled and Kayak switched our return flight to a red eye. Ridiculous.

Will never book through you again. Very disappointed in the notices and action taken or provided when planes are rescheduled, enough to cause missed connections

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.

It was so bad experience they wanted just charged passengers for any reason.

My flight was cancelled and I was left to figure out where to find a hotel, something to eat and how to get a new flight at 11:30pm. Wasted a day. Thanks, Air Canada!

flight was delayed 6 hours for weather, then cancelled because of the crash in toronto, but none of the links to cancel or rebook my flights are working

They kept changing the gate (6 times in 30 minutes) and then left us on the plane for 4 hours before departure. Likely was the storm, which is understandable, but the lack of communication and the e constant running between gates at opposite ends of the airport really threw me and my friend for a loop.

Legitimately everything about this flight was awful, was also so delayed I never want to use air Canada again

Terrible all around. Flight was late and airplane was very uncomfortable. The crew were unhelpful and hid in the back. Did zero work. No entertainment.

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

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

Other airlines flying from Toronto to Seattle

Flights from the other most popular airlines that fly from Toronto to Seattle according to KAYAK users. Prices are the lowest found on KAYAK over the last 7 days. Price and availability are not guaranteed.

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