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SEA - YTO

C$ 136 Find cheap flights from Seattle to Toronto

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Seattle to Toronto departing on 18/11. 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

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

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Seattle to Toronto, 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 Seattle to Toronto, as well as popular online travel agencies
In the last 7 days, travellers have searched 42,168,857 times on KAYAK, and here is why:

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Cheap flight deals from Seattle to Toronto (SEA-YTO)

 
These are the cheapest deals for flights from Seattle to Toronto currently on KAYAK along with options from the most popular airlines KAYAK users selected for this route. 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 Seattle to Toronto

Recommended round-trip deals departing in the coming months from the most popular airlines that fly from Seattle to Toronto.

Recent one-way flight deals from Seattle to Toronto

Only flying one-way? Below are some of the best one-way flight deals from Seattle to Toronto found on KAYAK recently.

Recent last-minute flight deals from Seattle to Toronto

Leaving soon but still want a bargain? Check out these latest deals for last minute flights from Seattle to Toronto.

Recent direct flight deals from Seattle to Toronto

The latest deals for direct flights from Seattle to Toronto so you can sit back and relax without the need for a layover.

Cheap bus & train deals from Seattle to Toronto

Find recent round-trip train or bus tickets from Seattle to Toronto.

All round-trip flight deals to Toronto

The cheapest plane tickets to Toronto found on KAYAK recently.
Discover the best prices and deals for you by selecting your travel dates.
Choose your dates
5:28 p.m. - 6:46 a.m.SEA-YYZ
10h 18m1 stop
12:00 p.m. - 4:23 p.m.YYZ-SEA
31h 23m2 stops
C$ 310
Find Deal
Tue, 12 Nov - Tue, 19 Nov
1:33 p.m. - 6:46 a.m.SEA-YYZ
14h 13m1 stop
8:00 p.m. - 6:26 p.m.YYZ-SEA
25h 26m1 stop
C$ 317
Find Deal
Wed, 6 Nov - Wed, 13 Nov
1:50 p.m. - 5:50 a.m.SEA-YYZ
13h 00m2 stops
8:00 a.m. - 8:26 p.m.YYZ-SEA
15h 26m2 stops
C$ 362WestJet
Find Deal
Tue, 22 Oct - Sat, 26 Oct
1:50 p.m. - 5:50 a.m.SEA-YYZ
13h 00m2 stops
8:00 p.m. - 2:21 p.m.YYZ-SEA
21h 21m1 stop
C$ 375WestJet
Find Deal
Tue, 22 Oct - Mon, 28 Oct
7:27 a.m. - 3:05 p.m.SEA-YYZ
4h 38mdirect
4:20 p.m. - 6:43 p.m.YYZ-SEA
5h 23mdirect
C$ 389Alaska Airlines
Find Deal
Sat, 1 Feb - Sun, 9 Feb
7:17 a.m. - 2:55 p.m.SEA-YYZ
4h 38mdirect
4:20 p.m. - 6:40 p.m.YYZ-SEA
5h 20mdirect
C$ 390Alaska Airlines
Find Deal
Tue, 5 Nov - Tue, 12 Nov
3:25 p.m. - 7:30 a.m.SEA-YYZ
13h 05m1 stop
10:00 a.m. - 8:31 p.m.YYZ-SEA
13h 31m1 stop
C$ 419United Airlines
Find Deal
Sat, 18 Jan - Sun, 19 Jan
3:05 p.m. - 12:57 a.m.SEA-YYZ
6h 52m1 stop
7:15 p.m. - 9:40 p.m.YYZ-SEA
5h 25mdirect
C$ 423Air Canada
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Sat, 2 Nov - Sat, 9 Nov
12:55 p.m. - 7:30 a.m.SEA-YYZ
15h 35m1 stop
7:15 p.m. - 9:40 p.m.YYZ-SEA
5h 25mdirect
C$ 428United Airlines
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Tue, 12 Nov - Sat, 16 Nov
3:05 p.m. - 12:57 a.m.SEA-YYZ
6h 52m1 stop
6:55 p.m. - 9:20 p.m.YYZ-SEA
5h 25mdirect
C$ 441Air Canada
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Sat, 1 Feb - Sun, 9 Feb
5:28 p.m. - 6:46 a.m.SEA-YYZ
10h 18m1 stop
C$ 136
Find Deal
Mon, 18 Nov
8:25 p.m. - 7:40 p.m.SEA-YYZ
20h 15m2 stops
C$ 147
Find Deal
Wed, 23 Oct
3:20 p.m. - 6:00 a.m.SEA-YYZ
11h 40m2 stops
C$ 158WestJet
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Sat, 30 Nov
7:27 a.m. - 3:05 p.m.SEA-YYZ
4h 38mdirect
C$ 162Alaska Airlines
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Tue, 7 Jan
6:05 a.m. - 1:50 p.m.SEA-YYZ
4h 45mdirect
C$ 174Air Canada
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Sat, 1 Feb
11:10 p.m. - 10:17 a.m.SEA-YYZ
8h 07m1 stop
C$ 178Delta
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Mon, 28 Oct
9:15 p.m. - 10:24 a.m.SEA-YYZ
10h 09m1 stop
C$ 180Delta
Find Deal
Sat, 9 Nov
3:05 p.m. - 1:04 a.m.SEA-YYZ
6h 59m1 stop
C$ 181Air Canada
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Wed, 20 Nov
7:00 a.m. - 5:50 a.m.SEA-YYZ
19h 50m2 stops
C$ 208WestJet
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Fri, 25 Oct
7:17 a.m. - 2:55 p.m.SEA-YYZ
4h 38mdirect
C$ 230Alaska Airlines
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Sat, 9 Nov
7:00 a.m. - 5:50 a.m.SEA-YYZ
19h 50m2 stops
10:35 p.m. - 12:10 a.m.YYZ-SEA
28h 35m2 stops
C$ 532
Find Deal
Sat, 12 Oct - Sun, 27 Oct
7:00 a.m. - 5:50 a.m.SEA-YYZ
19h 50m2 stops
10:35 p.m. - 12:10 a.m.YYZ-SEA
28h 35m3 stops
C$ 551
Find Deal
Sat, 12 Oct - Sun, 27 Oct
7:00 a.m. - 6:07 p.m.SEA-YYZ
8h 07m1 stop
4:00 p.m. - 9:10 p.m.YYZ-SEA
8h 10m1 stop
C$ 927WestJet
Find Deal
Thu, 10 Oct - Tue, 15 Oct
7:00 a.m. - 6:07 p.m.SEA-YYZ
8h 07m1 stop
3:45 p.m. - 8:26 p.m.YYZ-SEA
7h 41m1 stop
C$ 946WestJet
Find Deal
Thu, 10 Oct - Sat, 12 Oct
12:26 a.m. - 11:15 a.m.SEA-YYZ
7h 49m1 stop
6:45 a.m. - 5:03 p.m.YYZ-SEA
13h 18m1 stop
C$ 1,020American Airlines
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Sun, 13 Oct - Wed, 16 Oct
12:26 a.m. - 2:28 p.m.SEA-YYZ
11h 02m1 stop
6:45 a.m. - 2:51 p.m.YYZ-SEA
11h 06m1 stop
C$ 1,086American Airlines
Find Deal
Fri, 11 Oct - Sun, 27 Oct
7:00 a.m. - 2:30 p.m.SEA-YYZ
4h 30mdirect
3:40 p.m. - 6:05 p.m.YYZ-SEA
5h 25mdirect
C$ 1,398Alaska Airlines
Find Deal
Thu, 10 Oct - Tue, 15 Oct
5:50 a.m. - 4:01 p.m.SEA-YYZ
7h 11m1 stop
7:55 p.m. - 10:16 p.m.YYZ-SEA
5h 21mdirect
C$ 1,459Air Canada
Find Deal
Thu, 10 Oct - Tue, 15 Oct
7:00 a.m. - 2:30 p.m.SEA-YYZ
4h 30mdirect
3:40 p.m. - 6:05 p.m.YYZ-SEA
5h 25mdirect
C$ 1,535Alaska Airlines
Find Deal
Thu, 10 Oct - Sat, 12 Oct
11:20 p.m. - 6:53 a.m.SEA-YYZ
4h 33mdirect
7:55 p.m. - 10:16 p.m.YYZ-SEA
5h 21mdirect
C$ 1,826Air Canada
Find Deal
Fri, 11 Oct - Tue, 15 Oct
7:17 a.m. - 2:55 p.m.SEA-YYZ
4h 38mdirect
4:20 p.m. - 6:40 p.m.YYZ-SEA
5h 20mdirect
C$ 390Alaska Airlines
Find Deal
Tue, 5 Nov - Tue, 12 Nov
7:17 a.m. - 2:55 p.m.SEA-YYZ
4h 38mdirect
4:20 p.m. - 6:40 p.m.YYZ-SEA
5h 20mdirect
C$ 403Alaska Airlines
Find Deal
Wed, 6 Nov - Wed, 13 Nov
7:22 a.m. - 2:55 p.m.SEA-YYZ
4h 33mdirect
4:20 p.m. - 6:39 p.m.YYZ-SEA
5h 19mdirect
C$ 434Alaska Airlines
Find Deal
Sun, 8 Dec - Wed, 11 Dec
7:27 a.m. - 3:05 p.m.SEA-YYZ
4h 38mdirect
4:20 p.m. - 6:43 p.m.YYZ-SEA
5h 23mdirect
C$ 451Alaska Airlines
Find Deal
Thu, 9 Jan - Mon, 13 Jan
7:17 a.m. - 2:55 p.m.SEA-YYZ
4h 38mdirect
4:20 p.m. - 6:40 p.m.YYZ-SEA
5h 20mdirect
C$ 461Alaska Airlines
Find Deal
Sat, 9 Nov - Tue, 12 Nov
6:05 a.m. - 1:50 p.m.SEA-YYZ
4h 45mdirect
7:15 p.m. - 9:40 p.m.YYZ-SEA
5h 25mdirect
C$ 627United Airlines
Find Deal
Tue, 12 Nov - Tue, 19 Nov
6:05 a.m. - 1:50 p.m.SEA-YYZ
4h 45mdirect
7:15 p.m. - 9:40 p.m.YYZ-SEA
5h 25mdirect
C$ 635Air Canada
Find Deal
Thu, 31 Oct - Sat, 9 Nov
6:05 a.m. - 1:50 p.m.SEA-YYZ
4h 45mdirect
7:15 p.m. - 9:40 p.m.YYZ-SEA
5h 25mdirect
C$ 645United Airlines
Find Deal
Thu, 14 Nov - Mon, 18 Nov
6:05 a.m. - 1:50 p.m.SEA-YYZ
4h 45mdirect
7:15 p.m. - 9:40 p.m.YYZ-SEA
5h 25mdirect
C$ 649Air Canada
Find Deal
Thu, 31 Oct - Sat, 9 Nov
6:05 a.m. - 1:50 p.m.SEA-YYZ
4h 45mdirect
7:15 p.m. - 9:40 p.m.YYZ-SEA
5h 25mdirect
C$ 869
Find Deal
Fri, 22 Nov - Mon, 2 Dec

Flights from Seattle to Toronto - Travel Insights & Trends

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

What is the cheapest Seattle to Toronto flight route?

The cheapest price for flight routes found by users searching on KAYAK in the last 2 weeks for one-way flights from Seattle to Toronto.
Our data shows that the cheapest route for a one-way flight from Seattle to Toronto cost C$ 153 and was between Seattle and Toronto Pearson Intl Airport. On average, the best prices are found if you fly this route. The average price for a return flight for this route is C$ 130.

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

The average price of all flights from Seattle to Toronto clicked on KAYAK for each day over the last 12 months.
If your flying dates are flexible, you should consider flying to Toronto on a Wednesday, as we generally find the cheapest rates on that day for this route. On the other hand, Monday is the most expensive day to fly from Seattle to Toronto. For your return ticket, we recommend flying on a Tuesday and avoiding Sundays for the best deals.

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

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for flights from Seattle to Toronto, 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 Seattle to Toronto is October, where tickets cost C$ 549 on average. On the other hand, the most expensive months are March and December, where the average cost of tickets is C$ 912 and C$ 862 respectively.

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

The average 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 C$ 650, prices are generally cheapest when you fly direct.

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

To calculate daily average prices, KAYAK takes all prices for each day before departure over the last year for flights from Seattle to Toronto, 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 Seattle to Toronto, you should book around 2 weeks before departure. For the absolute cheapest price, our data suggests you should book 127 days before departure.

Good to know

Low season

February

High season

August

Cheapest flight

C$ 136
Best time to beat the crowds but there is an average 16% increase in price.
Most popular time to fly and prices are also 8% lower on average.
Flight from Seattle to Toronto Pearson Airport

When to book flights from Seattle to Toronto

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

  • What is the cheapest flight from Seattle to Toronto?

    In the last 3 days, the lowest price for a flight from Seattle to Toronto was C$ 100 for a one-way ticket and C$ 228 for a round-trip.

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

    Seattle is served by only 1 airport and there are 2 airports in Toronto. You will leave Seattle from Seattle/Tacoma Intl and you will be arriving in Toronto at one of these airports: Toronto Kitchener-Waterloo or Toronto Pearson Intl.

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

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

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

    The Boeing 737 MAX 8 is the aircraft model that flies most regularly on the Seattle to Toronto flight route.

  • Which airline alliances offer flights from Seattle to Toronto?

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

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

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

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

    The two airlines most popular with KAYAK users for flights from Seattle to Toronto are Alaska Airlines and WestJet. With an average price for the route of C$ 653 and an overall rating of 8.0, Alaska Airlines is the most popular choice. WestJet is also a great choice for the route, with an average price of C$ 531 and an overall rating of 7.3.

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

    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 Seattle to Toronto.

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

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

    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 Toronto with an airline and back to Seattle with another airline.

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

    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 Toronto from Seattle 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 Seattle to Toronto

  • Looking for a cheap flight? 25% of our users found flights on this route for C$ 196 or less one-way and C$ 188 or less round-trip.

Prefer to fly non-stop from Seattle to Toronto?

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

Nonstop departures

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,Hawaiian Airlines, +1 more

Air Canada,Alaska Airlines, +2 more

Wednesday

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

Air Canada,Alaska Airlines, +2 more

Thursday

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

Air Canada,Alaska Airlines, +2 more

Friday

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

Air Canada,Alaska Airlines, +2 more

Saturday

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

Air Canada,Alaska Airlines, +2 more

Sunday

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

Air Canada,Alaska Airlines, +2 more

See more nonstop flights

Nonstop returns

Toronto to Seattle/Tacoma Intl

Monday

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

Air Canada,Alaska Airlines, +2 more

Tuesday

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

Air Canada,Alaska Airlines, +2 more

Wednesday

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

Air Canada,Alaska Airlines, +2 more

Thursday

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

Air Canada,Alaska Airlines, +2 more

Friday

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

Air Canada,Alaska Airlines, +2 more

Saturday

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

Air Canada,Alaska Airlines, +2 more

Sunday

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

Air Canada,Alaska Airlines, +2 more

See more nonstop flights
See more nonstop flights

Top 3 airlines serving from Seattle to Toronto

 
See real verified KAYAK customer reviews for airlines flying from Seattle to Toronto. 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 Seattle to Toronto? 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 9396 reviews
7.9Comfort
7.2Food
8.2Boarding
7.1Entertainment
8.6Crew
Airline reviews

The boarding was fine.the crew was efficient and helpful.

10.0 ExcellentAnonymous, Oct 2024SEA - ABQ
Read more Alaska Airlines reviews

The boarding was fine.the crew was efficient and helpful.

The flight was smooth, nothing too special. But what frustrated us about our experience with Alaska Airlines is that they were so rough with our luggage that they busted open the bag around our toddler's car seat. The car seat doesn't appear to be damaged, but we do have a part missing. I hope they either mail us the piece that fell off and out of the bag due to their mishandling, or make things right somehow. It's frustrating that they were so rough with our luggage.

Look at previous comment, the gate changes at the last minute, and no notifications online or the Alaska App.not great. !!!! Almost missed my flight, I had so much anxiety, not good. The only great thing was the help I got from the information booth, a woman Named Rana, She ran with me all the way to my new Gate, we went on three train transfers to get to the other side of the terminal, otherwise I would have missed my flight after having a four hour layover. Thank You , Thank You to the Woman Rana who saved the day for me.

The flight made it to the destination. I could not make a seat selection and had to rub shoulders with the passengers next to me for 5 hours.

The young boy in the seat in front of me was so excited to see me that I was touched. It was the highlight of my day.

Horrific..boarded on time..mechanical repaired ..left gate another light, returned to gate for another 2.5 hours before we were informed that they had another plane. Unfortunately, crew timed out and were no longer able to fly...delayed again. A total delay of 8 HOURS worst experience I have ever had. We were informed we would receive compensation email from Alaska Airlines Nothing yet

We purchased tickets and were last to board while standby passengers were boarding before us. The WiFi wasn't working and the same thing happened on our last Alaska flight. The snack provided was vegan I wasn't going to chance eating that on a 6 hour flight incase it didn't agree with me.

Larger seats, more legroom, better food, backseat screens to watch movies

Flight was a bit turbulent, and there was a delay. Everything else was fine!

Good conversation with crew while I need assistance because I'm deaf. Thank you

Trip was uneventful which is good. Boarding took a long time due to many disabled/elderly requiring assistance which again is fine. Landing and take off were excellent. Food and entertainment were as expected, bring your own if you have preferences otherwise you get what you get.

Check in agent was good, stewardess was unfriendly and certainly did not have the care of the passengers in mind Spent the whole time on her phone

Westjet is the worst airline in the world, they are absolutely terrible, there are to many things that happened that I can't explain in this message, I would like to talk to someone about my ordeal. I am partial handicapped and that I can only walk a short distance, I calculated how far I walked and it was more than a kilometer, the pain is so bad today I have to go to my docor, they told me there was nobody available to take me to my gate, this is just one instance. This is not finished yet, I need to contact westjet and let them know about my trip from hell

Wasn’t able to purchase wifi for entertainment so the flight was long

It was a swoop flight at a west jetfare… the plane was literally a swoop branded plane.. I pay extra to NOT fly the budget carriers like swoop and flair so needless to say I was annoyed when both my outgoing and return flight were on swoop planes.

Okay but not like typical first or business class. On domestic airlines

I liked the kindness of the check in counter crew, the flexibility with changing seats and the comfort. Better free drink selection would have been good but it wasn't a long flight.

Slow boarding process, tickets downgraded to Ultra Basic with no carry-on luggage, not enough space in overhead compartments

Was very busy with people crowding around as we were waiting for all wheelchairs but once out of the immediate area we were able to load onto a vehicle for our next gate

Our seats that I had paid extra for near the front of the aircraft were no longer available on this replacement aircraft. We were told we either had to accept the new replacement seats in row 27 near the back in seats E and B, no longer together, or sit in the very back in row 30 squeezed into E and F seats that do not recline or have trays that provide a flat platform for a refreshment. This is not what I had expected. However, again your flight crew did the best they could given the circumstances.

No complaints l will always do Air Canada once they are flying where I want to go

Same problem with the entertainment controls being on top of the armrests than on the previous flight, also a Boeing 737 series.

Both fights were delayed. Food could be better comparing to other international flights

Great crew and the plane was very nice! The problem was that we didn’t have WiFi on both of my flights. I found that to be very disappointing today when all the other airlines always have WiFi so I could work or watch a movie.

Even after booking in advance and getting to airport early, multiple delays and gate changes as well as forceful check in of bags even though it is within size and weight limits.

Very good. It was a short flight, but check in, boarding and flight experience were all great.

Air Canada should allow basic economy passengers to upgrade if they wish to do so.

. Crew was professional and friendly. Food could have been hotter

Terrible. They cancelled our flight the night before. Please give me a call to discuss.

The gate crew were very efficient and diligent with respect to helping people with carry-on luggage. Because of their diligence, only a few "bad apples" snuck through and subsequently delayed onboarding because of the lengthy attempts they had to make to get their oversized roller bags to fit in the relatively small overhead luggage compartments in the Embraer 175 we were flying in. I also appreciated Air Canada's attempts to head off this situation by offering, during check in, the opportunity to have carry-on luggage checked through to one's ultimate destination. This made onboarding and subsequent transfers very convenient for me.

Book cheap flights from Seattle to Toronto

Recent one-way flight deals

 
Only flying one-way? Below are some of the best one-way flight deals from Seattle to Toronto found on KAYAK in the last 72 hours.
18/11Mon
1 stop
10h 18mSEA-YYZ
C$ 136
23/10Wed
2 stops
20h 15mSEA-YYZ
C$ 147
30/11Sat
2 stopsWestJet
11h 40mSEA-YYZ
C$ 158
7/1Tue
directAlaska Airlines
4h 38mSEA-YYZ
C$ 162
1/2Sat
directAir Canada
4h 45mSEA-YYZ
C$ 174
28/10Mon
1 stopDelta
8h 07mSEA-YYZ
C$ 178
9/11Sat
1 stopDelta
10h 09mSEA-YYZ
C$ 180
20/11Wed
1 stopAir Canada
6h 59mSEA-YYZ
C$ 181
25/10Fri
2 stopsWestJet
19h 50mSEA-YYZ
C$ 208
9/11Sat
directAlaska Airlines
4h 38mSEA-YYZ
C$ 230

Search by stops

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Last minute flights from Seattle to Toronto

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 Seattle to Toronto that are departing in the next 10 days.
12/10Sat
multi-stop
19h 50mSEA-YYZ
27/10Sun
multi-stop
28h 35mYYZ-SEA
C$ 532
12/10Sat
multi-stop
19h 50mSEA-YYZ
27/10Sun
multi-stop
28h 35mYYZ-SEA
C$ 551
10/10Thu
multi-stopWestJet
8h 07mSEA-YYZ
15/10Tue
multi-stopWestJet
8h 10mYYZ-SEA
C$ 927
10/10Thu
multi-stopWestJet
8h 07mSEA-YYZ
12/10Sat
multi-stopWestJet
7h 41mYYZ-SEA
C$ 946
13/10Sun
multi-stopAmerican Airlines
7h 49mSEA-YYZ
16/10Wed
multi-stopAmerican Airlines
13h 18mYYZ-SEA
C$ 1,020
11/10Fri
multi-stopAmerican Airlines
11h 02mSEA-YYZ
27/10Sun
multi-stopAmerican Airlines
11h 06mYYZ-SEA
C$ 1,086
10/10Thu
directAlaska Airlines
4h 30mSEA-YYZ
15/10Tue
directAlaska Airlines
5h 25mYYZ-SEA
C$ 1,398
10/10Thu
multi-stopAir Canada
7h 11mSEA-YYZ
15/10Tue
directAir Canada
5h 21mYYZ-SEA
C$ 1,459
10/10Thu
directAlaska Airlines
4h 30mSEA-YYZ
12/10Sat
directAlaska Airlines
5h 25mYYZ-SEA
C$ 1,535
11/10Fri
directAir Canada
4h 33mSEA-YYZ
15/10Tue
directAir Canada
5h 21mYYZ-SEA
C$ 1,826

Search by stops

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Search by price

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

Information on your arrival and departure airports