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Cheap flights from Toronto Pearson International to Seattle

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Compare Toronto Pearson International to Seattle flight deals

Find the cheapest month or even day of the year to fly to Seattle

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Flight deals from Toronto Pearson International to Seattle

Looking for a cheap last-minute deal or the best round-trip flight from Toronto Pearson International to Seattle? Find the lowest prices on one-way and round-trip tickets right here.
Seattle.C$289 per passenger.Departing Wed, Mar 19, returning Wed, Mar 26.Round-trip flight with WestJet and Spirit Airlines.Outbound indirect flight with WestJet, departing from Toronto Pearson International on Wed, Mar 19, arriving in Seattle / Tacoma International.Inbound indirect flight with Spirit Airlines, departing from Seattle / Tacoma International on Wed, Mar 26, arriving in Toronto Pearson International.Price includes taxes and charges.From C$289, select.
Seattle.C$301 per passenger.Departing Tue, Apr 29, returning Wed, May 7.Round-trip flight with Porter Airlines (Canada) Ltd and Spirit Airlines.Outbound indirect flight with Porter Airlines (Canada) Ltd, departing from Toronto Pearson International on Tue, Apr 29, arriving in Seattle / Tacoma International.Inbound indirect flight with Spirit Airlines, departing from Seattle / Tacoma International on Wed, May 7, arriving in Toronto Pearson International.Price includes taxes and charges.From C$301, select.
Seattle.C$302 per passenger.Departing Fri, Apr 4, returning Mon, Apr 14.Round-trip flight with WestJet and Spirit Airlines.Outbound indirect flight with WestJet, departing from Toronto Pearson International on Fri, Apr 4, arriving in Seattle / Tacoma International.Inbound indirect flight with Spirit Airlines, departing from Seattle / Tacoma International on Mon, Apr 14, arriving in Toronto Pearson International.Price includes taxes and charges.From C$302, select.
Seattle.C$332 per passenger.Departing Thu, Mar 27, returning Tue, Apr 1.Round-trip flight with WestJet and Spirit Airlines.Outbound indirect flight with WestJet, departing from Toronto Pearson International on Thu, Mar 27, arriving in Seattle / Tacoma International.Inbound indirect flight with Spirit Airlines, departing from Seattle / Tacoma International on Tue, Apr 1, arriving in Toronto Pearson International.Price includes taxes and charges.From C$332, select.
Seattle.C$337 per passenger.Departing Fri, May 9, returning Tue, May 13.Round-trip flight with WestJet and Spirit Airlines.Outbound indirect flight with WestJet, departing from Toronto Pearson International on Fri, May 9, arriving in Seattle / Tacoma International.Inbound indirect flight with Spirit Airlines, departing from Seattle / Tacoma International on Tue, May 13, arriving in Toronto Pearson International.Price includes taxes and charges.From C$337, select.
Seattle.C$366 per passenger.Departing Tue, Apr 22, returning Tue, Jun 3.Round-trip flight with WestJet.Outbound indirect flight with WestJet, departing from Toronto Pearson International on Tue, Apr 22, arriving in Seattle / Tacoma International.Inbound indirect flight with WestJet, departing from Seattle / Tacoma International on Tue, Jun 3, arriving in Toronto Pearson International.Price includes taxes and charges.From C$366, select.
Seattle.C$403 per passenger.Departing Sun, May 25, returning Mon, Jun 2.Round-trip flight with WestJet.Outbound indirect flight with WestJet, departing from Toronto Pearson International on Sun, May 25, arriving in Seattle / Tacoma International.Inbound indirect flight with WestJet, departing from Seattle / Tacoma International on Mon, Jun 2, arriving in Toronto Pearson International.Price includes taxes and charges.From C$403, select.
Seattle.C$403 per passenger.Departing Fri, Jun 6, returning Mon, Jun 9.Round-trip flight with WestJet.Outbound indirect flight with WestJet, departing from Toronto Pearson International on Fri, Jun 6, arriving in Seattle / Tacoma International.Inbound indirect flight with WestJet, departing from Seattle / Tacoma International on Mon, Jun 9, arriving in Toronto Pearson International.Price includes taxes and charges.From C$403, select.

Find the cheapest month to fly from Toronto Pearson International to Seattle

We’re always keeping an eye on fares, so you can find the best one in seconds. It looks like Toronto Pearson International to Seattle flights are currently cheapest in March.
Mar
from C$289
Apr
from C$302
May
from C$337
Jun
from C$403
Jul
from C$550
Aug
from C$575
Sep
from C$565
Oct
from C$590
Nov
from C$493
Dec
from C$546
Jan
from C$656
Feb
Find prices

Direct flights from Toronto Pearson International to Seattle

Alternative Toronto Pearson International to Seattle routes

Looking for the cheapest, fastest or easiest route from Toronto Pearson International to Seattle? You could fly into the following airports instead.

Toronto to Seattle: Flight information

The things to know before you go.
Cheapest flight foundC$289
Cheapest month to flyMarch
Average flight time5 hrs, 22 mins
Most popular airlineAir Tahiti Nui
Average flights per week36

Finding cheap flights from Toronto Pearson International to Seattle: Frequently asked questions

There are 4 airports in Seattle: Seattle Lake Union SPB, Seattle Boeing Fld, Seattle / Tacoma International, and Paine Field.
The best price we found for a round-trip flight from Toronto Pearson International to Seattle is C$289. This is an estimate based on information collected from different airlines and travel providers over the last 4 days and is subject to change and availability.
5 hours and 22 minutes is the average flight time from Toronto Pearson International to Seattle.
Air Tahiti Nui, Air Canada and United fly direct from Toronto Pearson International to Seattle.
There are 36 flights per week flying from Toronto Pearson International to Seattle, as of March 2025.
The cheapest month to fly from Toronto Pearson International to Seattle is usually March 2025.
If you're flying from Toronto Pearson International Airport, the cheapest airport near Seattle is Seattle / Tacoma International – which is 19.5 km away from the center of Seattle. We've found flights to this airport from C$289.
After crunching the numbers on our flight calendar, we found that it's currently cheapest to fly from Toronto Pearson International Airport to Seattle on Wednesday, March 19, 2025.
Yes – the average flight time is 5 hours and 22 minutes.
We show every price from over 1,200 airlines and travel agents, comparing them all so you don’t have to. If you know you want to fly to Seattle but you’re not ready to book, set up a Price Alert. We’ll track prices for you, and let you know when they rise or fall.
We crunched all the numbers in our flight calendar, and it looks like the cheapest time to book a flight to Seattle is around 40 days in advance, so don’t leave your flight to the last minute.
In March, the average temperature is usually around 6°C. August is typically the warmest month in Seattle, when it usually averages around 23°C. You can expect the least rain in July. The coldest month is December, with temperatures averaging 0°C. The rainiest month is November.
Currently, WestJet and Alaska Airlines offer the cheapest flight tickets to Seattle.

How to find cheap flights to Seattle from Toronto Pearson International

Looking for cheap tickets from Toronto Pearson International to Seattle? Here are a few tips on how to secure the best flight price and make your journey as smooth as possible.

  • Simply hit "search." From Delta Air Lines to international carriers like Emirates, we compare all major airlines along with the most popular online travel agents to find the cheapest plane tickets from Toronto Pearson International to Seattle. And with us, there are no hidden fees – what you see is what you pay.
  • Compare flight deals to Seattle from Toronto Pearson International from over 1,000 providers. Then choose the cheapest plane tickets or fastest journeys.
  • Flex your dates to find the best Toronto Pearson International–Seattle ticket prices. If you're flexible when it comes to your travel dates, use Skyscanner's "Whole month" tool to find the cheapest month, and even day to fly to Seattle from Toronto Pearson International.
  • Set up a Price Alert. You can easily track the fare of your cheap Toronto Pearson International–Seattle flights by creating an alert. Whenever prices go down or up, you'll get an email or push notification to help make sure you get the best possible flight deal.
  • Fly without stops. Only interested in direct flights between Toronto Pearson International and Seattle? Make sure to tick "Direct flights only" when performing a search. If there are direct flights available on the route, these will appear in the results.
  • Find the cheapest Business Class flights from Toronto Pearson International and Seattle. We scour the Internet for the best Business, Premium Economy and First Class flight fares to Seattle, too. Check the difference in price as you search – you might just stumble on a last-minute low fare. Note that not all cabin classes are available for every destination or airline.
  • Include nearby airports in your search. Widen your search for Toronto Pearson International to Seattle flight deals by selecting the "add nearby airports" option. This will allow you to see flight prices for all the nearest airports at your departure point and your destination and could help you save the next time you travel.

    • Combine your flight to Seattle from Toronto Pearson International with hotels and car rental

    Once you've secured your cheap flight ticket from Toronto Pearson International to Seattle, discover the best prices and exclusive rates for hotels in Seattle or nearby. You can also compare hundreds of car rental companies at once so you get the best car rental price for your trip.


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Plan the rest of your trip from Toronto to Seattle

Prices shown on this page are estimated lowest prices only. Found in the last 45 days.