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£156 Cheap Flights from Toronto (YYZ) to Seattle (SEA)

View £156 flight on Sun, 4 Oct 2026Opens in a new window

Popular airlines from Toronto Pearson Intl. Airport (YYZ) to Seattle-Tacoma International Airport (SEA)

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Cheap Flights from Toronto (YYZ) to Seattle (SEA)

Prices were available within the past 7 days and start at £156 for one-way flights and £242 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

WestJet
Thu, 5 Nov - Mon, 30 Nov
YYZ
Toronto
SEA
Seattle
£242 Return, found 6 days ago
£242
Return
found 6 days ago
Select WestJet flight, departing Thu, 5 Nov from Toronto to Seattle, returning Mon, 30 Nov, priced at £242 found 6 days ago
WestJet
Thu, 5 Nov - Mon, 30 Nov
YYZ
Toronto
SEA
Seattle
£264 Return, found 6 days ago
£264
Return
found 6 days ago
Select WestJet flight, departing Thu, 5 Nov from Toronto to Seattle, returning Mon, 30 Nov, priced at £264 found 6 days ago
WestJet
Tue, 6 Oct - Thu, 15 Oct
YYZ
Toronto
SEA
Seattle
£276 Return, found 4 days ago
£276
Return
found 4 days ago
Select WestJet flight, departing Tue, 6 Oct from Toronto to Seattle, returning Thu, 15 Oct, priced at £276 found 4 days ago
Delta
Sat, 14 Nov - Wed, 2 Dec
YYZ
Toronto
SEA
Seattle
£284 Return, found 1 day ago
£284
Return
found 1 day ago
Select Delta flight, departing Sat, 14 Nov from Toronto to Seattle, returning Wed, 2 Dec, priced at £284 found 1 day ago
WestJet
Wed, 16 Sept - Mon, 21 Sept
YYZ
Toronto
SEA
Seattle
£292 Return, found 6 days ago
£292
Return
found 6 days ago
Select WestJet flight, departing Wed, 16 Sept from Toronto to Seattle, returning Mon, 21 Sept, priced at £292 found 6 days ago
WestJet
Wed, 2 Sept - Sun, 20 Sept
YYZ
Toronto
SEA
Seattle
£293 Return, found 3 days ago
£293
Return
found 3 days ago
Select WestJet flight, departing Wed, 2 Sept from Toronto to Seattle, returning Sun, 20 Sept, priced at £293 found 3 days ago
WestJet
Thu, 27 Aug - Fri, 28 Aug
YYZ
Toronto
SEA
Seattle
£295 Return, found 6 days ago
£295
Return
found 6 days ago
Select WestJet flight, departing Thu, 27 Aug from Toronto to Seattle, returning Fri, 28 Aug, priced at £295 found 6 days ago
Air Canada
Fri, 4 Dec - Mon, 7 Dec
YYZ
Toronto
SEA
Seattle
£316 Return, just found
£316
Return
just found
Select Air Canada flight, departing Fri, 4 Dec from Toronto to Seattle, returning Mon, 7 Dec, priced at £316 just found
United
Sun, 4 Oct - Wed, 21 Oct
YYZ
Toronto
SEA
Seattle
£346 Return, found 1 day ago
£346
Return
found 1 day ago
Select United flight, departing Sun, 4 Oct from Toronto to Seattle, returning Wed, 21 Oct, priced at £346 found 1 day ago
Alaska Airlines
Tue, 1 Dec - Sat, 12 Dec
YYZ
Toronto
SEA
Seattle
£356 Return, found 1 day ago
£356
Return
found 1 day ago
Select Alaska Airlines flight, departing Tue, 1 Dec from Toronto to Seattle, returning Sat, 12 Dec, priced at £356 found 1 day ago

Alternative airports near Seattle

Prices were available within the past 7 days. Prices and availability are subject to change.

Select flight to Seattle - Tacoma Intl. SEA. Cheapest option available. Average driving time to city centre is 20 minutes. Flights from £394
SEA
Seattle - Tacoma Intl.
Cheapest
Average driving time to city centre20 min
Flights from £394

Find the cheapest month to fly from Toronto (YYZ) to Seattle (SEA)

March is typically the cheapest month to fly

From £139 - £256 per traveller.

Frequently asked questions

How much does a flight from Toronto, ON (YYZ-Pearson Intl.) to Seattle, WA (SEA-Seattle - Tacoma Intl.) cost?
You can find one-way and return flights from MAN to GDZ with Expedia. Flight prices vary based on the month and day of the week you want to travel, as well as the airline and how far in advance you book your ticket. Filter your search on Expedia by "Price (lowest to highest)" to see our cheapest fares first, and use the Price Tracking tool to receive alerts when YYZ to SEA ticket fares go up or down.
What is the cheapest month to fly from Toronto, ON (YYZ-Pearson Intl.) to Seattle, WA (SEA-Seattle - Tacoma Intl.)?
The cheapest months to fly from YYZ to SEA are typically during off-peak season when demand is low. Traveling in off-peak or shoulder months is usually a good way to secure cheap tickets, just remember to avoid flying during holidays if you are able to. Use the calendar view in your search to see which months have low fares on this route.
Which airlines fly direct from Toronto, ON (YYZ) to Seattle, WA (SEA)?
Enter YYZ to SEA and your travel dates, then apply the 'Nonstop' filter to see only direct flights.
How do I find cheap flights from Toronto, ON (YYZ-Pearson Intl.) to Seattle, WA (SEA-Seattle - Tacoma Intl.)?
To find a cheap flight from Toronto, ON (YYZ-Pearson Intl.) to Seattle, WA (SEA-Seattle - Tacoma Intl.), be flexible with your dates. Traveling outside of peak vacation months and booking a mid-week flight can help you save. Early morning and late night flights are often more affordable, too. Expedia allows you to compare flight times, airlines and routes all in one place to find low fares. You can also set up Price Tracking and receive alerts when fares go up or down.
What is the best airline to fly with from Toronto, ON (YYZ-Pearson Intl.) to Seattle, WA (SEA-Seattle - Tacoma Intl.)?
The best airline to fly with from Toronto, ON (YYZ-Pearson Intl.) to Seattle, WA (SEA-Seattle - Tacoma Intl.) will differ from traveler to traveler. If you like to fly early, Alaska Airlines offers early morning flights. If price is the most important factor, Alaska Airlines typically offers the lowest fares. Air Canada offers the most daily flights from Toronto, ON (YYZ-Pearson Intl.) to Seattle, WA (SEA-Seattle - Tacoma Intl.), which is great if flexibility is what you value most. The best carrier for this journey could also be the one you have a loyalty membership with, as flying with that airline or another airline within the same alliance could help you collect points or enjoy lounge access.
What is the best time to fly from Toronto, ON (YYZ-Pearson Intl.) to Seattle, WA (SEA-Seattle - Tacoma Intl.)?
The best time to fly is usually mid-week (Tuesday or Wednesday) and during early morning hours as flights tend to be cheaper, less crowded, and generally more on-time. Avoid major holidays and peak vacation seasons for smoother travel. Combining off-peak days and hours often gives the best combination of cost, comfort, and convenience.
How many flights per day from Toronto, ON (YYZ-Pearson Intl.) to Seattle, WA (SEA-Seattle - Tacoma Intl.)?
There are approximately 139 connecting flights per day from Toronto Pearson International (YYZ) to Seattle-Tacoma International (SEA). Some common connection points include O'Hare International (ORD), Calgary International (YYC), and Vancouver International (YVR).
What is the earliest flight from Toronto, ON (YYZ) to Seattle, WA (SEA)?
Sort flights by "Departure (earliest)" on Expedia to find the earliest flight from Toronto, ON (YYZ) to Seattle, WA (SEA). To compare more early flights, use the "Early Morning" and "Morning" filters in your search.
What day of the week has the most flights from Toronto, ON (YYZ-Pearson Intl.) to Seattle, WA (SEA-Seattle - Tacoma Intl.)?
If you're flying from Toronto, ON (YYZ-Pearson Intl.) to Seattle, WA (SEA-Seattle - Tacoma Intl.), you'll generally find the most flights on a Friday, with around 91 flights available. This gives you a good selection of options for your travel plans. Major airlines on this route include Air Canada, United, and American Airlines. Friday offers notably more flight options compared to other days of the week, making it a great day to find a flight that suits your schedule.
What are the most popular departure times for flights from Toronto, ON (YYZ-Pearson Intl.) to Seattle, WA (SEA-Seattle - Tacoma Intl.)?
The most popular departure times for flights from Toronto, ON (YYZ-Pearson Intl.) to Seattle, WA (SEA-Seattle - Tacoma Intl.) are in the morning, from 6am to 9am. Many major carriers, including Air Canada, Delta and United, offer flights during this window. Many travellers prefer this because it allows for an early start to their journey, giving them more time to settle in at their destination.
How long does it take to fly from Toronto, ON (YYZ-Pearson Intl.) to Seattle, WA (SEA-Seattle - Tacoma Intl.)?
Flying nonstop from YYZ to SEA takes around 5 hours 30 minutes, with the route covering approximately 3,307 kilometers. Flights with a layover typically take 4 hours longer than direct options. Keep in mind that actual flight times can vary due to wind patterns, weather, and air traffic.
Can you fly business or first class from Toronto, ON (YYZ-Pearson Intl.) to Seattle, WA (SEA-Seattle - Tacoma Intl.)?
Yes, you can fly business class or first class between YYZ and SEA.Airlines that offer business class service on this route include:
  • Alaska Airlines
  • Air Canada
  • Delta
  • American Airlines
First class cabins are available on:
  • Alaska Airlines
  • Air Canada
  • Delta
  • Skywest Air
  • United
  • American Airlines
How do I earn miles on a Toronto, ON (YYZ) to Seattle, WA (SEA) flight with Expedia?
It's easy to earn miles on a Toronto, ON (YYZ) to Seattle, WA (SEA) flight when you book with Expedia. Before you confirm your booking, simply select your frequent flyer program and enter your program number. As a member of One Key™, you can also earn OneKeyCash™* on top of your airline miles when you book with Expedia.*Excludes taxes and fees. OneKeyCash is not redeemable for cash and can only be used on Expedia and other participating brands.
Is it cheaper to buy a plane ticket from Toronto, ON (YYZ) to Seattle, WA (SEA) at the last minute?
Typically, booking a last minute flight from Toronto, ON (YYZ) to Seattle, WA (SEA) will be more expensive than booking in advance. As the departure date approaches, there are usually fewer seats available which can drive up the cost. However, if there's some wiggle room with your travel dates and times, you could bag a cheap last-minute fare.
Is it cheaper to book a Toronto, ON (YYZ) to Seattle, WA (SEA) flight and hotel package?
Securing a Toronto, ON (YYZ) to Seattle, WA (SEA) flight and hotel package is usually cheaper than booking separately. With Expedia, you can enjoy the ease of organizing your travels all in one place. Select from our extensive range of stays and then add flights, activities and car rentals to your booking. Bundle everything together, and you could save hundreds of dollars.
Can I cancel or change the date of my flight from Toronto, ON (YYZ-Pearson Intl.) to Seattle, WA (SEA-Seattle - Tacoma Intl.)?
If you booked your Toronto, ON (YYZ-Pearson Intl.) to Seattle, WA (SEA-Seattle - Tacoma Intl.) flight within the last 24 hours, you may be able to modify or cancel it without any fees. Depending on the airline and the type of ticket you have, additional charges may apply for changes beyond this timeframe. Airline policies and contact information can be found in your itinerary or confirmation email. Or, head to our Customer Service portal if you'd like more information.

Travel information

Origin airport
Pearson Intl.
Destination airport
Seattle - Tacoma Intl.
Airlines serving
Air Canada, Alaska Airlines, American Airlines, Delta, United, WestJet
Return price
£241
Distance
3288 km
Average flight time
2 hours 26 mins

Book with confidence

Compare flights from Toronto to Seattle easily and book with confidence

For travelling on business or for pleasure, Expedia makes it easy to book your flights from Toronto to Seattle. Operating between them flights per day, 20 airlines cover the route. And fly direct, getting you to Seattle - Tacoma Intl. in just hours. If you have a preferred carrier, use our advanced search tool to find the right flight from Pearson Intl. to Seattle - Tacoma Intl..  

To make things even better, in the advanced search, you can also choose to fly economy, premium economy, business or first class, select your maximum number of stops, and pick your preferred departure and arrival time. You can also opt for refundable and direct flights. 

Grab a great deal on your flight from Pearson Intl. (YYZ) to Seattle - Tacoma Intl. (SEA)

The easiest way to view the best deals on flights from Toronto to Seattle today is to enter your travel dates and hit search. From here, you can sort your results by price to see the cheapest flights first. Right now, return flights from Pearson Intl. to Seattle - Tacoma Intl. start at just £242 and range up to £356.  

To find an even better deal, try  

  • being flexible on your dates – midweek flights can be cheaper
  • looking for other airports near Toronto and Seattle
  • booking your flight during November, the cheapest month on this route
  • varying your flight times – early morning and late at night are sometimes cheaper 

Why you should book your Toronto to Seattle flight with Expedia!

We cater for all flight types, cabin classes and airlines. So whether you’re booking flights from Pearson Intl. to Seattle - Tacoma Intl. for a budget break or a business trip with a bit of pleasure thrown in, we make it easy to secure the seat that’s right for you.  

Thanks to our supersized inventory that offers great choice all in one place, you know you’ll get a great deal with Expedia. Especially if you bundle your flight together with your hotel, you will unlock amazing savings. For added peace of mind, you can choose flexible bookings or filter to find refundable options, so you won’t pay a fee to change your flight.  

Compare flights from Toronto to Seattle easily and book with confidence

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