Cheap flights from Toronto Pearson Intl Airport to Seattle from £173
This is the cheapest retur flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 11/11. Fares are subject to change and may not be available on all flights or dates of travel.
YYZ — SEA
28 Oct — 4 Nov1
Return
1 adult
Economy
Return
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.
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One-way
Cheapest flights from Pearson Intl to Seattle
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 28 September 2026.
Sun 11/1012:40 -
2 stops9h 05m
Wed 14/1019:35 -
1 stop7h 10m
Deal found 27/9£246
Wed 11/1114:10 -
2 stops26h 30m
Wed 18/1114:30 -
2 stops12h 15m
Deal found 27/9£258
Sat 31/1013:34 -
1 stop13h 18m
Sat 7/1106:00 -
1 stop8h 19m
Deal found 25/9£302
Wed 4/1106:15 -
1 stop13h 01m
Fri 6/1123:50 -
1 stop9h 09m
Deal found 26/9£313
Wed 11/1106:00 -
1 stop8h 09m
Mon 16/1122:40 -
1 stop9h 29m
Deal found 28/9£313
Sat 24/1006:00 -
1 stop11h 45m
Sat 31/1022:59 -
1 stop10h 26m
Deal found 24/9£314
Fri 30/1006:15 -
1 stop11h 04m
Sun 1/1113:42 -
1 stop6h 33m
Deal found 28/9£324
Sat 5/1206:00 -
1 stop12h 03m
Thu 10/1209:50 -
1 stop10h 17m
Deal found 23/9£325
Tue 10/1114:20 -
1 stop10h 38m
Mon 16/1106:00 -
1 stop12h 57m
Deal found 23/9£326
Wed 11/1122:20 -
1 stop18h 20m
Wed 18/1108:19 -
Nonstop4h 46m
Deal found 27/9£331
Best flights from Pearson Intl to Seattle
Discover carefully curated flight deals from Pearson Intl to Seattle that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 28 September 2026.
Fri 6/1109:40 -
1 stop11h 55m
Sun 8/1106:00 -
1 stop8h 19m
Deal found 28/9£324
Fri 13/1117:15 -
Nonstop5h 30m
Tue 17/1108:19 -
Nonstop4h 46m
Deal found 27/9£387
Thu 12/1106:00 -
1 stop11h 30m
Sat 14/1122:40 -
1 stop9h 29m
Deal found 24/9£325
Sun 8/1109:40 -
1 stop11h 55m
Sun 15/1123:15 -
1 stop6h 40m
Deal found 24/9£337
Wed 10/217:15 -
Nonstop5h 27m
Fri 19/208:21 -
Nonstop4h 44m
Deal found 25/9£393
Tue 10/1106:30 -
2 stops11h 55m
Tue 17/1123:40 -
1 stop8h 29m
Deal found 26/9£352
Fri 30/1017:15 -
Nonstop5h 28m
Mon 16/1108:19 -
Nonstop4h 46m
Deal found 27/9£400
Sun 15/1109:45 -
1 stop11h 52m
Sat 21/1106:00 -
1 stop12h 57m
Deal found 28/9£361
Wed 6/117:25 -
1 stop9h 44m
Wed 13/108:30 -
2 stops12h 31m
Deal found 25/9£364
Sun 25/1013:34 -
1 stop13h 18m
Thu 29/1023:50 -
1 stop9h 09m
Deal found 26/9£366
Sun 7/217:15 -
1 stop7h 50m
Sun 14/206:00 -
1 stop10h 07m
Deal found 25/9£393
Sat 24/1011:38 -
1 stop13h 25m
Sat 31/1009:36 -
2 stops10h 39m
Deal found 27/9£394
Direct flights from Pearson Intl to Seattle
Explore direct flight options from Pearson Intl to Seattle based on user searches, and compare prices and availability for your desired travel dates. Data last updated 28 September 2026.
Wed 11/1117:15 -
Nonstop5h 30m
Wed 18/1108:19 -
Nonstop4h 46m
Deal found 27/9£356
Tue 10/1117:15 -
Nonstop5h 30m
Tue 17/1108:19 -
Nonstop4h 46m
Deal found 26/9£374
Tue 9/217:15 -
Nonstop5h 27m
Sat 20/208:21 -
Nonstop4h 44m
Deal found 25/9£375
Wed 11/1117:15 -
Nonstop5h 30m
Tue 17/1108:19 -
Nonstop4h 46m
Deal found 24/9£377
Tue 1/1217:15 -
Nonstop5h 41m
Wed 9/1208:33 -
Nonstop4h 32m
Deal found 23/9£377
Wed 21/1016:55 -
Nonstop5h 31m
Wed 28/1008:20 -
Nonstop4h 45m
Deal found 28/9£381
Tue 24/1117:15 -
Nonstop5h 32m
Tue 1/1208:33 -
Nonstop4h 32m
Deal found 23/9£384
Wed 11/1117:15 -
Nonstop5h 30m
Sun 15/1108:19 -
Nonstop4h 46m
Deal found 27/9£387
Fri 16/1016:55 -
Nonstop5h 31m
Tue 27/1008:20 -
Nonstop4h 45m
Deal found 25/9£388
Wed 11/1117:15 -
Nonstop5h 30m
Mon 16/1108:19 -
Nonstop4h 46m
Deal found 24/9£390
Tue 1/1217:15 -
Nonstop5h 41m
Mon 7/1208:33 -
Nonstop4h 32m
Deal found 23/9£390
Tue 9/217:15 -
Nonstop5h 27m
Fri 19/208:21 -
Nonstop4h 44m
Deal found 25/9£393
Last-minute flights from Pearson Intl to Seattle
Discover last-minute flight deals from Pearson Intl to Seattle. Data last updated 28 September 2026 and is based on user searches.
Sun 11/1012:40 -
2 stops9h 05m
Wed 14/1019:35 -
1 stop7h 10m
Deal found 27/9£246
Sat 24/1006:00 -
1 stop11h 45m
Sat 31/1022:59 -
1 stop10h 26m
Deal found 23/9£313
Wed 28/1006:00 -
1 stop8h 00m
Mon 2/1111:25 -
1 stop8h 31m
Deal found 25/9£313
Wed 28/1017:49 -
1 stop7h 16m
Sat 31/1009:36 -
2 stops10h 20m
Deal found 25/9£347
Thu 29/1006:00 -
1 stop8h 00m
Sat 31/1023:10 -
1 stop7h 39m
Deal found 25/9£325
Thu 29/1009:40 -
1 stop11h 55m
Sun 1/1123:10 -
1 stop6h 39m
Deal found 25/9£336
Fri 30/1006:15 -
1 stop11h 04m
Sun 1/1113:42 -
1 stop6h 33m
Deal found 28/9£324
Sat 31/1013:34 -
1 stop13h 18m
Sat 7/1106:00 -
1 stop8h 19m
Deal found 25/9£302
One-way flights from Pearson Intl to Seattle
Search for one-way flight options from Pearson Intl to Seattle. Find affordable one-way fares based on user searches. Data last updated 28 September 2026.
Tue 10/1106:00 -
1 stop11h 50m
Wed 31/1200:00 -
Nonstop0h 00m
Deal found 25/9£173
Sat 24/1006:00 -
1 stop11h 45m
Wed 31/1200:00 -
Nonstop0h 00m
Deal found 23/9£180
Mon 9/1117:25 -
1 stop9h 32m
Wed 31/1200:00 -
Nonstop0h 00m
Deal found 28/9£184
Sun 25/1006:00 -
1 stop8h 00m
Wed 31/1200:00 -
Nonstop0h 00m
Deal found 25/9£190
Fri 23/1013:34 -
1 stop13h 18m
Wed 31/1200:00 -
Nonstop0h 00m
Deal found 23/9£191
Sat 24/1007:40 -
2 stops14h 05m
Wed 31/1200:00 -
Nonstop0h 00m
Deal found 24/9£205
Wed 11/1117:15 -
Nonstop5h 30m
Wed 31/1200:00 -
Nonstop0h 00m
Deal found 28/9£207
Sat 24/1016:55 -
Nonstop5h 31m
Wed 31/1200:00 -
Nonstop0h 00m
Deal found 24/9£208
Find 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 28 September 2026.
Customise your flight search to find flights from Pearson Intl to Seattle that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 7,457,451 searches. Data last updated 28 September 2026.
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 11/11
06:00-14:50
1 stop11h 50m
Seattle/Tacoma Intl
Wed 31/12
00:00-03:00
Nonstop0h 00m
£173
TorontoSeattle
YYZ Toronto Pearson Intl - SEA Seattle/Tacoma Intl
YYZSEA
Toronto Pearson Intl
Tue 10/11
14:20-21:58
1 stop10h 38m
Seattle/Tacoma Intl
Wed 31/12
00:00-03:00
Nonstop0h 00m
£173
TorontoSeattle
YYZ Toronto Pearson Intl - SEA Seattle/Tacoma Intl
YYZSEA
Toronto Pearson Intl
Sat 24/10
06:00-14:45
1 stop11h 45m
Seattle/Tacoma Intl
Wed 31/12
00:00-03:00
Nonstop0h 00m
£180
TorontoSeattle
YYZ Toronto Pearson Intl - SEA Seattle/Tacoma Intl
YYZSEA
Toronto Pearson Intl
Mon 9/11
06:00-14:50
1 stop11h 50m
Seattle/Tacoma Intl
Wed 31/12
00:00-03:00
Nonstop0h 00m
£184
TorontoSeattle
YYZ Toronto Pearson Intl - SEA Seattle/Tacoma Intl
YYZSEA
Toronto Pearson Intl
Fri 23/10
13:34-23:52
1 stop13h 18m
Seattle/Tacoma Intl
Wed 31/12
00:00-03:00
Nonstop0h 00m
£191
TorontoSeattle
YYZ Toronto Pearson Intl - SEA Seattle/Tacoma Intl
YYZSEA
Toronto Pearson Intl
Sat 5/12
17:15-19:56
Nonstop5h 41m
Seattle/Tacoma Intl
Wed 31/12
00:00-03:00
Nonstop0h 00m
£207
Fastest return journey
TorontoSeattle
YYZ Toronto Pearson Intl - SEA Seattle/Tacoma Intl
YYZSEA
Toronto Pearson Intl
Tue 12/1
17:15-19:42
Nonstop5h 27m
Seattle/Tacoma Intl
Wed 31/12
00:00-03:00
Nonstop0h 00m
£208
TorontoSeattle
YYZ Toronto Pearson Intl - SEA Seattle/Tacoma Intl
YYZSEA
Toronto Pearson Intl
Sat 24/10
16:55-19:26
Nonstop5h 31m
Seattle/Tacoma Intl
Wed 31/12
00:00-03:00
Nonstop0h 00m
£208
TorontoSeattle
YYZ Toronto Pearson Intl - SEA Seattle/Tacoma Intl
YYZSEA
Toronto Pearson Intl
Fri 23/10
16:55-19:26
Nonstop5h 31m
Seattle/Tacoma Intl
Wed 31/12
00:00-03:00
Nonstop0h 00m
£221
TorontoSeattle
YYZ Toronto Pearson Intl - SEA Seattle/Tacoma Intl
YYZSEA
Toronto Pearson Intl
Fri 6/11
09:40-18:35
1 stop11h 55m
Seattle/Tacoma Intl
Sun 8/11
06:00-17:19
1 stop8h 19m
£324
Flights are sorted by cheapest return flights first.
Deals found on 28/9
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.
YYZ-SEA
Estimated return price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.
Cheapflights Insights
Everything you need to know about your flight from Toronto Pearson Intl Airport to Seattle
Prices
Airlines
Delays
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 £176). Flying from Toronto Pearson Intl Airport to Seattle in September is currently the most expensive (average of £357). 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?
Find hourly flight availability from Pearson Intl to Seattle. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 28 September 2026.
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 typical for this route at the moment.
Toronto Pearson Intl Airport to Seattle flights typically cost between £239 and £390 in October.The cheapest return price found within the last 5 days was £246 on WestJet (11 Oct–14 Oct).
Weekly flight availability from Toronto Pearson Intl Airport to Seattle
Explore weekly flight availability from Pearson Intl to Seattle. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated 28 September 2026.
The most flights from YYZ to SEA are scheduled on a Thursday (4 on average). You will have fewer flight options on Wednesday, which is when the least amount of flights are scheduled (2 on average).
How often are flights from Toronto to Seattle delayed?
About 30% of weekly flights between Toronto and Seattle have experienced delays in the past year, with the average delay time being 154 minutes.
What is the most punctual flight time for Toronto to Seattle flights?
Historically, flights departing in the early afternoon are less likely to be delayed, whereas flights leaving in the evening tend to experience delays more often.
What day of the week experiences the fewest flight delays on this route?
Saturday tends to have the lowest number of delays on this route, whereas Monday has historically faced a higher average of delays compared to other days of the week.
Which airline has the best punctuality record on Toronto to Seattle flights?
Over the past year, Alaska Airlines have had the lowest number of delays on this route, with just 18% of flights being delayed.
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.
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 9h 25m. Fly via Delta to get the fastest option. Toronto Pearson Intl Airport and Seattle are separated by a distance of 2054 mi.
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: Alaska Airlines (78%), Brussels Airlines (35%), Air Canada( 33%).
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 £369, our data shows the cheapest flight currently is £240. When looking at the most popular route, (Toronto Pearson Intl - Seattle/Tacoma Intl), you can expect to pay £302 for that flight.
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 £176). Flying from Toronto Pearson Intl Airport to Seattle in September is currently the most expensive (average of £357). 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.
Browse through other flights departing from Pearson Intl. Flights are based on user searches made on Cheapflights and were last updated on 28 September 2026.
Explore flights to Seattle departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on 28 September 2026.
Find the best flight deals on Cheapflights, where travellers can enjoy low prices and a wide availability of flights to their desired destinations.
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.
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