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Cheap flights from Toronto Pearson Intl Airport to Seattle from £175

YYZ — SEA
10 Dec — 17 Dec1
1 adult
1 adult, Economy, 0 bags
Cheapflights Tip: The best prices from Toronto Pearson Intl to Seattle/Tacoma Intl are usually found in February or January, booked 72 days in advance, depart on a Monday or Tuesday and return on a Monday

Cheap flight deals from Pearson Intl to Seattle

Enter your travel dates to find the best prices.

Cheapest flights from Pearson Intl to Seattle

Tue 24/1117:15 -
Nonstop5h 32m
Sat 28/1108:31 -
Nonstop4h 34m
Deal found 10/11£265
Tue 15/1217:15 -
Nonstop5h 41m
Tue 19/108:29 -
Nonstop4h 36m
Deal found 9/11£267
Thu 10/1206:10 -
1 stop10h 12m
Sun 13/1207:45 -
Nonstop4h 40m
Deal found 8/11£271
Thu 26/1106:10 -
1 stop10h 15m
Sun 29/1119:05 -
1 stop8h 47m
Deal found 9/11£274
Wed 9/1206:10 -
1 stop10h 12m
Wed 6/122:50 -
1 stop15h 59m
Deal found 9/11£277
Mon 7/1206:45 -
2 stops12h 27m
Sat 9/110:52 -
1 stop7h 23m
Deal found 9/11£281
Sat 5/1210:53 -
2 stops10h 35m
Sat 12/1210:40 -
2 stops10h 19m
Deal found 9/11£282
Thu 10/1208:35 -
2 stops10h 47m
Sun 13/1205:05 -
2 stops8h 42m
Deal found 10/11£283
Thu 3/1217:15 -
Nonstop5h 41m
Fri 8/108:29 -
Nonstop4h 36m
Deal found 9/11£285
Sun 6/1206:30 -
1 stop14h 58m
Wed 6/105:00 -
1 stop7h 02m
Deal found 9/11£286

Find flight deals from Pearson Intl to Seattle

Round-trip from

£265

One-way from

£175

Popular in

December

Cheapest in

February

Average price

£360

Good round-trip deal

£237 or less

Good one-way deal

£490 or less
Alaska Airlines
  • Alaska Airlines
  • 24/11-28/11
  • Nonstop
  • 10h 06m total
  • Toronto to Seattle
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Delta
  • Delta
  • 5/12-31/12
  • 1 total stop
  • 9h 30m total
  • Toronto to Seattle
Search Deals
Highest demand for flights based on searches. 5% potential increase in price (£11 potential increase over avg. return price).
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Cheapest flight prices on average. 2% potential price decrease (£6 potential savings vs. average return price).
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Average for round-trip flights in November 2026
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Price to beat on a round-trip flight from Toronto Pearson Intl to Seattle/Tacoma Intl.
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Price to beat on a one-way flight from Toronto Pearson Intl to Seattle/Tacoma Intl.
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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

Cheapest return flight

TorontoSeattle

YYZ Toronto Pearson Intl - SEA Seattle/Tacoma Intl

YYZSEA

Toronto Pearson Intl

Wed 27/1

17:25-23:25

1 stop9h 00m

Seattle/Tacoma Intl

Wed 31/12

00:00-03:00

Nonstop0h 00m

£175

TorontoSeattle

YYZ Toronto Pearson Intl - SEA Seattle/Tacoma Intl

YYZSEA

Toronto Pearson Intl

Mon 7/12

14:25-22:03

1 stop10h 38m

Seattle/Tacoma Intl

Wed 31/12

00:00-03:00

Nonstop0h 00m

£181

TorontoSeattle

YYZ Toronto Pearson Intl - SEA Seattle/Tacoma Intl

YYZSEA

Toronto Pearson Intl

Thu 17/12

14:25-22:03

1 stop10h 38m

Seattle/Tacoma Intl

Wed 31/12

00:00-03:00

Nonstop0h 00m

£181

TorontoSeattle

YYZ Toronto Pearson Intl - SEA Seattle/Tacoma Intl

YYZSEA

Toronto Pearson Intl

Mon 29/3

16:45-19:13

Nonstop5h 28m

Seattle/Tacoma Intl

Wed 31/12

00:00-03:00

Nonstop0h 00m

£195

TorontoSeattle

YYZ Toronto Pearson Intl - SEA Seattle/Tacoma Intl

YYZSEA

Toronto Pearson Intl

Tue 30/3

16:45-19:13

Nonstop5h 28m

Seattle/Tacoma Intl

Wed 31/12

00:00-03:00

Nonstop0h 00m

£195

TorontoSeattle

YYZ Toronto Pearson Intl - SEA Seattle/Tacoma Intl

YYZSEA

Toronto Pearson Intl

Sun 28/3

06:10-12:45

1 stop9h 35m

Seattle/Tacoma Intl

Wed 31/12

00:00-03:00

Nonstop0h 00m

£197

TorontoSeattle

YYZ Toronto Pearson Intl - SEA Seattle/Tacoma Intl

YYZSEA

Toronto Pearson Intl

Tue 5/1

17:55-13:50

2 stops22h 55m

Seattle/Tacoma Intl

Wed 31/12

00:00-03:00

Nonstop0h 00m

£198

TorontoSeattle

YYZ Toronto Pearson Intl - SEA Seattle/Tacoma Intl

YYZSEA

Toronto Pearson Intl

Fri 26/3

08:35-20:40

2 stops15h 05m

Seattle/Tacoma Intl

Wed 31/12

00:00-03:00

Nonstop0h 00m

£198

TorontoSeattle

YYZ Toronto Pearson Intl - SEA Seattle/Tacoma Intl

YYZSEA

Toronto Pearson Intl

Fri 11/12

06:10-16:12

2 stops13h 02m

Seattle/Tacoma Intl

Wed 31/12

00:00-03:00

Nonstop0h 00m

£198
Fastest return journey

TorontoSeattle

YYZ Toronto Pearson Intl - SEA Seattle/Tacoma Intl

YYZSEA

Toronto Pearson Intl

Fri 8/1

17:15-19:42

Nonstop5h 27m

Seattle/Tacoma Intl

Wed 31/12

00:00-03:00

Nonstop0h 00m

£199

Flights are sorted by cheapest return flights first.

Deals found on 6/11

Showing 1-10 of 21 resultsSorted by cheapest first
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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.
Estimated return price

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 71 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, February is the cheapest month in which you can book a flight from Toronto Pearson Intl Airport to Seattle (average of £175). Flying from Toronto Pearson Intl Airport to Seattle in December is currently the most expensive (average of £383). 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?

When flying from Toronto Pearson Intl Airport to Seattle, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

How much does it cost for a return flight from Toronto Pearson Intl Airport to Seattle?

Airfare is below average for this route at the moment.

Toronto Pearson Intl Airport to Seattle flights typically cost between £272 and £425 in November.
The cheapest return price found within the last 5 days was £265 on Alaska Airlines (24 Nov–28 Nov).

Related info for your journey

  • What airport do you fly into for flights to Seattle from Toronto Pearson Intl?

    Most people fly into Seattle/Tacoma Intl (SEA) if they book a flight to Seattle from Toronto Pearson Intl. On average, Seattle/Tacoma Intl has 3 inbound flights from Toronto Pearson Intl per day from 0 airlines. Seattle/Tacoma Intl is conveniently located just 11.4 mi from Seattle’s city center.

  • How long is the flight from Toronto Pearson Intl Airport to Seattle?

    There are many flights that can get you from Toronto Pearson Intl Airport to Seattle in 5h 41m. Fly via Alaska Airlines, United Airlines, or Delta to get the fastest option. Toronto Pearson Intl Airport and Seattle are separated by a distance of 2054 mi. This flight may include one or multiple stops.

  • What are the most reliable airlines from Toronto Pearson Intl Airport to Seattle?

    Before booking your flight to Seattle from Toronto Pearson Intl Airport, check out the most reliable airlines to get you to your destination on time: Qatar Airways (100%), Alaska Airlines (87%), Air Canada( 63%).

  • What are the cheapest flights from Toronto Pearson Intl Airport to Seattle?

    While on average a flight from Toronto Pearson Intl Airport to Seattle is generally £364, our data shows the cheapest flight currently is £237. When looking at the most popular route, (Toronto Pearson Intl - Seattle/Tacoma Intl), you can expect to pay £417 for that flight.

  • Can I find deals for flights from Pearson Intl to Seattle that include hotel bookings?

    Yes. In addition to deals on Pearson Intl to Seattle flights, Cheapflights offers holiday packages that include both flights and hotel.

  • How can I find direct flights from Pearson Intl to Seattle?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Pearson Intl to Seattle.

  • Can I find deals for business class flights from Pearson Intl to Seattle?

    Yes. Cheapflights offers flight deals from Pearson Intl to Seattle by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Toronto Pearson Intl Airport to Seattle?

    Currently, February is the cheapest month in which you can book a flight from Toronto Pearson Intl Airport to Seattle (average of £175). Flying from Toronto Pearson Intl Airport to Seattle in December is currently the most expensive (average of £383). 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.

See more FAQs

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