Cheap flights from Toronto Pearson Intl Airport to Seattle from £114
This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 15/10. Fares are subject to change and may not be available on all flights or dates of travel.
Cheapflights Tip: The best prices from Toronto Pearson Intl to Seattle/Tacoma Intl are usually found in February or January, booked 70 days in advance, depart on a Wednesday or Monday and return on a Monday
Cheap flight deals from Pearson Intl to Seattle
Discover tips and strategies to find the most affordable flight options for your journey from Pearson Intl (YYZ) to Seattle (SEA). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated 13 September 2025.
Round-trip from | £168 |
---|---|
One-way from | £114 |
Popular in | July |
Cheapest in | February |
Average price | £273 |
Find flight deals from Pearson Intl to Seattle
Cheapest flights from Pearson Intl to SeattleExplore the most affordable flight options available from Pearson Intl to Seattle. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 13 September 2025.
Explore the most affordable flight options available from Pearson Intl to Seattle. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 13 September 2025.
Cheapflights Fare Finder
Use the filters below to find and compare flights from Toronto Pearson Intl Airport to Seattle that are best for you.
Fly from
Fly to
Route
Depart
Return
Price
TorontoSeattle
YYZ - SEA
YYZSEA
Toronto Pearson Intl
Thu 13/11
14:10-19:16
1 stop8h 06m
Seattle/Tacoma Intl
Tue 18/11
10:05-21:29
1 stop8h 24m
TorontoSeattle
YYZ - SEA
YYZSEA
Toronto Pearson Intl
Sat 15/11
16:45-19:05
Nonstop5h 20m
Seattle/Tacoma Intl
Tue 18/11
07:55-15:35
Nonstop4h 40m
TorontoSeattle
YYZ - SEA
YYZSEA
Toronto Pearson Intl
Sat 15/11
16:45-19:05
Nonstop5h 20m
Seattle/Tacoma Intl
Wed 19/11
07:55-15:35
Nonstop4h 40m
TorontoSeattle
YYZ - SEA
YYZSEA
Toronto Pearson Intl
Sat 15/11
15:30-22:45
1 stop10h 15m
Seattle/Tacoma Intl
Sat 22/11
23:50-11:48
1 stop8h 58m
TorontoSeattle
YYZ - SEA
YYZSEA
Toronto Pearson Intl
Tue 11/11
14:57-22:41
1 stop10h 44m
Seattle/Tacoma Intl
Sat 22/11
23:50-11:48
1 stop8h 58m
TorontoSeattle
YYZ - SEA
YYZSEA
Toronto Pearson Intl
Sat 15/11
16:45-19:05
Nonstop5h 20m
Seattle/Tacoma Intl
Mon 17/11
07:55-15:35
Nonstop4h 40m
TorontoSeattle
YYZ - SEA
YYZSEA
Toronto Pearson Intl
Sat 15/11
16:45-19:05
Nonstop5h 20m
Seattle/Tacoma Intl
Sun 16/11
07:55-15:35
Nonstop4h 40m
TorontoSeattle
YYZ - SEA
YYZSEA
Toronto Pearson Intl
Wed 12/11
16:45-19:05
Nonstop5h 20m
Seattle/Tacoma Intl
Mon 17/11
07:55-15:35
Nonstop4h 40m
TorontoSeattle
YYZ - SEA
YYZSEA
Toronto Pearson Intl
Wed 12/11
16:45-19:05
Nonstop5h 20m
Seattle/Tacoma Intl
Sun 16/11
07:55-15:35
Nonstop4h 40m
TorontoSeattle
YYZ - SEA
YYZSEA
Toronto Pearson Intl
Thu 12/2
10:45-23:30
1 stop15h 45m
Seattle/Tacoma Intl
Tue 17/2
05:50-16:59
1 stop8h 09m
Best time to book a flight from Pearson Intl to Seattle
Have a flexible travel schedule? Discover the best time to fly to Seattle from Pearson Intl with our price prediction graph.
Cheapflights Insights
Everything you need to know about your flight from Toronto Pearson Intl Airport to Seattle
How far ahead should I book a flight from Toronto Pearson Intl Airport to Seattle?
The price you pay for your flight from Toronto Pearson Intl Airport to Seattle may vary depending on when you book. For the best chance of a lower fare, look to book 70 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.
What is the cheapest month to book a flight from Toronto Pearson Intl Airport to Seattle?
Currently, January is the cheapest month in which you can book a flight from Toronto Pearson Intl Airport to Seattle (average of £622). Flying from Toronto Pearson Intl Airport to Seattle in July is currently the most expensive (average of £946). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.
What is the cheapest time of day to fly from YYZ to SEA?
Unlike in the morning, when flights are generally more expensive, you can save up to 29% on flights from Toronto Pearson Intl Airport to Seattle by exploring options for tickets at midday.
Related info for your journey
Find useful and relevant information for your journey from Pearson Intl to Seattle. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
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How does Cheapflights help users find flights from Pearson Intl to Seattle?
Cheapflights makes it easy to find Pearson Intl to Seattle flights by helping our users search from 900+ travel sites for deals. We also provide you with filters for cabin, price, airline, airports, number of stops, and many more to narrow down that perfect flight.
Why should you use Cheapflights to find cheap flight tickets from Pearson Intl to Seattle?
Cheapflights simply makes it quick and affordable to book flights from Pearson Intl to Seattle by bringing together all flight options from hundreds of airlines and agencies online — and put it in one place for you to choose from. Plus, Cheapflights is 100% free to use for all.
Can Cheapflights find flights from Pearson Intl to Seattle with no change fees?
Cheapflights does show flights with no change fees to all users. To see these options for flights from Pearson Intl to Seattle, users can toggle the no change fees filter when performing a flight search.
Can Cheapflights notify me if prices for flights from Pearson Intl to Seattle become cheaper?
Of course! You can now track prices for flights from Pearson Intl to Seattle and get an alert from Cheapflights when they change. Have a valid email address ready and click the bell icon next to the flight deals above to set up your price alerts.