$191+ Cheap flights from Seattle (SEA) to Pearson Intl (YYZ)
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 9/10. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — YYZ
Sep 18 — Sep 251
Round-trip
1 adult, Economy
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Find cheap flights from Seattle to Pearson Intl with Cheapflights
1. Tell us where you want to go
Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”2. Select your favorite providers
We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.3. Compare prices and book
Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.Cheapflights Tip: The best prices from Seattle/Tacoma Intl to Toronto Pearson Intl are usually found in January or February, booked 83 days in advance, depart on a Tuesday or Wednesday and return on a Thursday
Cheap flight deals from Seattle to Pearson Intl
Cheapest
Best
Last-minute
One-way
Cheapest flights from Seattle to Pearson IntlExplore the most affordable flight options available from Seattle to Pearson Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on August 19, 2026.
Explore the most affordable flight options available from Seattle to Pearson Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on August 19, 2026.
This Kiwi.com deal was found by Cheapflights users on 8/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/277:35 pm -
1 stop7h 10m
Tue 9/151:30 pm -
1 stop8h 15m
Deal found 8/14![WestJet logo]()
$370
This Kiwi.com deal was found by Cheapflights users on 8/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/47:35 pm -
2 stops12h 40m
Sun 9/2010:25 pm -
1 stop14h 15m
Deal found 8/15![WestJet logo]()
$371
This FlightHub deal was found by Cheapflights users on 8/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/197:35 pm -
1 stop8h 20m
Sun 10/410:20 pm -
2 stops14h 20m
Deal found 8/16![WestJet logo]()
$372
This Kiwi.com deal was found by Cheapflights users on 8/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/287:00 am -
1 stop7h 10m
Sat 9/1912:40 pm -
2 stops9h 05m
Deal found 8/14![WestJet logo]()
$373
This Kiwi.com deal was found by Cheapflights users on 8/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/2810:30 am -
1 stop7h 45m
Tue 9/151:30 pm -
1 stop8h 15m
Deal found 8/14![WestJet logo]()
$374
This Kiwi.com deal was found by Cheapflights users on 8/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/307:00 am -
1 stop8h 55m
Sat 9/512:00 pm -
1 stop9h 45m
Deal found 8/17![WestJet logo]()
$375
This Kiwi.com deal was found by Cheapflights users on 8/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/210:30 am -
1 stop9h 15m
Sun 10/1111:10 pm -
2 stops13h 30m
Deal found 8/16![WestJet logo]()
$376
This Kiwi.com deal was found by Cheapflights users on 8/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/47:00 am -
2 stops11h 35m
Fri 9/1810:25 pm -
1 stop14h 15m
Deal found 8/16![WestJet logo]()
$377
This Justfly.com deal was found by Cheapflights users on 8/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/910:30 am -
1 stop7h 45m
Sun 10/1810:00 am -
1 stop11h 45m
Deal found 8/17![WestJet logo]()
$378
This Kiwi.com deal was found by Cheapflights users on 8/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/132:30 pm -
1 stop17h 25m
Tue 11/247:30 am -
1 stop9h 10m
Deal found 8/19![WestJet logo]()
$379
This FlightHub deal was found by Cheapflights users on 8/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/210:30 am -
2 stops9h 55m
Sat 10/1012:40 pm -
2 stops9h 05m
Deal found 8/16![WestJet logo]()
$380
This Kiwi.com deal was found by Cheapflights users on 8/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/152:30 pm -
1 stop17h 25m
Fri 11/277:30 am -
1 stop9h 10m
Deal found 8/19![WestJet logo]()
$381
Best flights from Seattle to Pearson IntlDiscover carefully curated flight deals from Seattle to Pearson Intl that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated August 19, 2026.
Discover carefully curated flight deals from Seattle to Pearson Intl that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated August 19, 2026.
This Alaska Airlines deal was found by Cheapflights users on 8/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/178:00 am -
Nonstop4h 45m
Wed 10/214:55 pm -
Nonstop5h 31m
Deal found 8/18![Alaska Airlines logo]()
$503
This Delta deal was found by Cheapflights users on 8/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/266:00 am -
1 stop6h 15m
Sat 10/106:00 am -
1 stop12h 21m
Deal found 8/18![Delta logo]()
$529
This Alaska Airlines deal was found by Cheapflights users on 8/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/118:19 am -
Nonstop4h 46m
Mon 11/165:15 pm -
Nonstop5h 30m
Deal found 8/16![Alaska Airlines logo]()
$525
This Delta deal was found by Cheapflights users on 8/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/209:36 am -
2 stops10h 39m
Sat 10/246:00 am -
2 stops10h 39m
Deal found 8/18![Delta logo]()
$568
This Alaska Airlines deal was found by Cheapflights users on 8/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/178:00 am -
Nonstop4h 45m
Tue 10/204:55 pm -
Nonstop5h 31m
Deal found 8/15![Alaska Airlines logo]()
$557
This Delta deal was found by Cheapflights users on 8/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/277:20 am -
1 stop11h 39m
Wed 10/76:30 am -
2 stops10h 09m
Deal found 8/18![Delta logo]()
$572
This Delta deal was found by Cheapflights users on 8/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/286:55 pm -
2 stops13h 40m
Wed 10/76:30 am -
2 stops10h 09m
Deal found 8/18![Delta logo]()
$578
This Alaska Airlines deal was found by Cheapflights users on 8/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/108:00 am -
Nonstop4h 45m
Mon 10/124:55 pm -
Nonstop5h 31m
Deal found 8/16![Alaska Airlines logo]()
$649
This Delta deal was found by Cheapflights users on 8/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/48:59 pm -
2 stops11h 20m
Sun 9/136:15 am -
1 stop7h 24m
Deal found 8/18![Delta logo]()
$704
This Alaska Airlines deal was found by Cheapflights users on 8/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/17:52 am -
Nonstop4h 53m
Tue 10/64:55 pm -
Nonstop5h 31m
Deal found 8/17![Alaska Airlines logo]()
$731
This Alaska Airlines deal was found by Cheapflights users on 8/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/17:59 am -
Nonstop4h 46m
Sun 9/64:55 pm -
Nonstop5h 18m
Deal found 8/14![Alaska Airlines logo]()
$765
This Alaska Airlines deal was found by Cheapflights users on 8/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/17:59 am -
Nonstop4h 46m
Wed 9/304:55 pm -
Nonstop5h 18m
Deal found 8/16![Alaska Airlines logo]()
$774
Last-minute flights from Seattle to Pearson IntlDiscover last-minute flight deals from Seattle to Pearson Intl. Data last updated August 19, 2026 and is based on user searches.
Discover last-minute flight deals from Seattle to Pearson Intl. Data last updated August 19, 2026 and is based on user searches.
This Kiwi.com deal was found by Cheapflights users on 8/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/2710:30 am -
1 stop7h 45m
Thu 9/171:30 pm -
1 stop8h 15m
Deal found 8/14![WestJet logo]()
$370
This Kiwi.com deal was found by Cheapflights users on 8/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/287:00 am -
1 stop7h 10m
Sat 9/1912:40 pm -
2 stops9h 05m
Deal found 8/14![WestJet logo]()
$373
This Kiwi.com deal was found by Cheapflights users on 8/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/2810:30 am -
1 stop7h 45m
Tue 9/151:30 pm -
1 stop8h 15m
Deal found 8/14![WestJet logo]()
$374
This Kiwi.com deal was found by Cheapflights users on 8/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/307:00 am -
1 stop8h 55m
Sat 9/512:00 pm -
1 stop9h 45m
Deal found 8/17![WestJet logo]()
$375
This Kiwi.com deal was found by Cheapflights users on 8/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/3010:30 am -
1 stop7h 45m
Tue 9/1512:00 pm -
1 stop9h 45m
Deal found 8/17![WestJet logo]()
$379
This Kiwi.com deal was found by Cheapflights users on 8/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/47:35 pm -
2 stops12h 40m
Sun 9/2010:25 pm -
1 stop14h 15m
Deal found 8/15![WestJet logo]()
$371
This Kiwi.com deal was found by Cheapflights users on 8/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/47:00 am -
2 stops11h 35m
Fri 9/1810:25 pm -
1 stop14h 15m
Deal found 8/16![WestJet logo]()
$377
This Justfly.com deal was found by Cheapflights users on 8/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/810:30 am -
2 stops8h 05m
Tue 10/1312:40 pm -
2 stops9h 05m
Deal found 8/19![WestJet logo]()
$381
This Trip.com deal was found by Cheapflights users on 8/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/117:35 pm -
2 stops16h 45m
Wed 9/1612:40 pm -
2 stops9h 05m
Deal found 8/19![WestJet logo]()
$376
This FlightHub deal was found by Cheapflights users on 8/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/197:35 pm -
1 stop8h 20m
Sun 10/410:20 pm -
2 stops14h 20m
Deal found 8/16![WestJet logo]()
$372
This Mytrip deal was found by Cheapflights users on 8/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/267:35 pm -
1 stop8h 20m
Wed 9/307:00 am -
3 stops14h 45m
Deal found 8/17![Multiple Airlines logo]()
$380
One-way flights from Seattle to Pearson IntlSearch for one-way flight options from Seattle to Pearson Intl. Find affordable one-way fares based on user searches. Data last updated August 19, 2026.
Search for one-way flight options from Seattle to Pearson Intl. Find affordable one-way fares based on user searches. Data last updated August 19, 2026.
This Kiwi.com deal was found by Cheapflights users on 8/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/107:35 pm -
1 stop14h 20m
Deal found 8/14![WestJet logo]()
$191
This Kiwi.com deal was found by Cheapflights users on 8/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/2410:30 am -
2 stops32h 05m
Deal found 8/18![WestJet logo]()
$193
This Kiwi.com deal was found by Cheapflights users on 8/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/37:35 pm -
1 stop7h 10m
Deal found 8/19![WestJet logo]()
$195
This FlightHub deal was found by Cheapflights users on 8/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/227:35 pm -
2 stops30h 35m
Deal found 8/18![WestJet logo]()
$197
This FlightHub deal was found by Cheapflights users on 8/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/67:35 pm -
2 stops16h 45m
Deal found 8/17![WestJet logo]()
$198
This Kiwi.com deal was found by Cheapflights users on 8/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/510:30 am -
2 stops21h 45m
Deal found 8/15![WestJet logo]()
$199
This FlightHub deal was found by Cheapflights users on 8/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/810:30 am -
1 stop16h 15m
Deal found 8/16![WestJet logo]()
$202
This Kiwi.com deal was found by Cheapflights users on 8/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/237:35 pm -
3 stops23h 00m
Deal found 8/16![WestJet logo]()
$203
This Kiwi.com deal was found by Cheapflights users on 8/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/1610:30 am -
1 stop9h 00m
Deal found 8/16![Multiple Airlines logo]()
$204
This Kiwi.com deal was found by Cheapflights users on 8/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/157:35 pm -
1 stop14h 20m
Deal found 8/16![Multiple Airlines logo]()
$205
This Kiwi.com deal was found by Cheapflights users on 8/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/1710:30 am -
2 stops8h 05m
Deal found 8/16![WestJet logo]()
$206
Find flight deals from Seattle to Pearson Intl
Discover tips and strategies to find the most affordable flight options for your journey from Seattle (SEA) to Pearson Intl (YYZ). 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 August 19, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $370 (Justfly.com) |
One-way from | $191 (Kiwi.com) |
Popular in | December |
Cheapest in | January |
Average price | $511 |
Good round-trip deal | $486 or less |
Good one-way deal | $327 or less |
Cheapflights Fare Finder
Customize your flight search to find flights from Seattle to Pearson Intl 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 August 19, 2026.
Use the filters below to find and compare flights from Seattle to Toronto Pearson Intl Airport that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
SeattleToronto
SEA Seattle/Tacoma Intl - YYZ Toronto Pearson Intl
SEAYYZ
Seattle/Tacoma Intl
Sat 10/17
8:00 am-3:45 pm
Nonstop4h 45m
Toronto Pearson Intl
Wed 10/21
4:55 pm-7:26 pm
Nonstop5h 31m
$503
SeattleToronto
SEA Seattle/Tacoma Intl - YYZ Toronto Pearson Intl
SEAYYZ
Seattle/Tacoma Intl
Wed 11/11
8:19 am-4:05 pm
Nonstop4h 46m
Toronto Pearson Intl
Mon 11/16
5:15 pm-7:45 pm
Nonstop5h 30m
$525
SeattleToronto
SEA Seattle/Tacoma Intl - YYZ Toronto Pearson Intl
SEAYYZ
Seattle/Tacoma Intl
Sat 9/26
6:00 am-3:15 pm
1 stop6h 15m
Toronto Pearson Intl
Sat 10/10
6:00 am-3:21 pm
1 stop12h 21m
$529
SeattleToronto
SEA Seattle/Tacoma Intl - YYZ Toronto Pearson Intl
SEAYYZ
Seattle/Tacoma Intl
Sat 10/17
8:00 am-3:45 pm
Nonstop4h 45m
Toronto Pearson Intl
Tue 10/20
4:55 pm-7:26 pm
Nonstop5h 31m
$557
SeattleToronto
SEA Seattle/Tacoma Intl - YYZ Toronto Pearson Intl
SEAYYZ
Seattle/Tacoma Intl
Tue 10/20
9:36 am-11:15 pm
2 stops10h 39m
Toronto Pearson Intl
Sat 10/24
6:00 am-1:39 pm
2 stops10h 39m
$568
SeattleToronto
SEA Seattle/Tacoma Intl - YYZ Toronto Pearson Intl
SEAYYZ
Seattle/Tacoma Intl
Sun 9/27
7:20 am-9:59 pm
1 stop11h 39m
Toronto Pearson Intl
Wed 10/7
6:30 am-1:39 pm
2 stops10h 09m
$572
SeattleToronto
SEA Seattle/Tacoma Intl - YYZ Toronto Pearson Intl
SEAYYZ
Seattle/Tacoma Intl
Mon 9/28
6:55 pm-11:35 am
2 stops13h 40m
Toronto Pearson Intl
Wed 10/7
6:30 am-1:39 pm
2 stops10h 09m
$578
SeattleToronto
SEA Seattle/Tacoma Intl - YYZ Toronto Pearson Intl
SEAYYZ
Seattle/Tacoma Intl
Sat 10/10
8:00 am-3:45 pm
Nonstop4h 45m
Toronto Pearson Intl
Mon 10/12
4:55 pm-7:26 pm
Nonstop5h 31m
$649
SeattleToronto
SEA Seattle/Tacoma Intl - YYZ Toronto Pearson Intl
SEAYYZ
Seattle/Tacoma Intl
Fri 9/4
8:59 pm-11:19 am
2 stops11h 20m
Toronto Pearson Intl
Sun 9/13
6:15 am-10:39 am
1 stop7h 24m
$704
SeattleToronto
SEA Seattle/Tacoma Intl - YYZ Toronto Pearson Intl
SEAYYZ
Seattle/Tacoma Intl
Thu 10/1
7:52 am-3:45 pm
Nonstop4h 53m
Toronto Pearson Intl
Tue 10/6
4:55 pm-7:26 pm
Nonstop5h 31m
$731
Showing 1-10 of 22 resultsSorted by cheapest first
Compare providers for flights from Seattle to Pearson Intl
Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Seattle to Pearson Intl in August.
| Provider | Price Accuracy | Trust Score* |
|---|---|---|
| Price Accuracy1 star | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy2 stars | Trust Score*3 stars | |
| Price Accuracy- | Trust Score*1 star |
- Most accurate provider: When it comes to deals on Seattle-Toronto Pearson Intl Airport flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Seattle-Toronto Pearson Intl Airport flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Seattle-Toronto Pearson Intl Airport flight searches over the past month and is updated monthly.
- Most trusted provider: When it comes to deals on Seattle-Toronto Pearson Intl Airport flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Seattle-Toronto Pearson Intl Airport flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.
Best time to book a flight from Seattle to Pearson Intl
Have a flexible travel schedule? Discover the best time to fly to Pearson Intl from Seattle with our price prediction graph.
SEA-YYZ
Estimated round-trip 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 Seattle to Toronto Pearson Intl Airport
Prices
Airlines
How far ahead should I book a flight from Seattle to Toronto Pearson Intl Airport?
The price you pay for your flight from Seattle to Toronto Pearson Intl Airport may vary depending on when you book. For the best chance of a lower fare, look to book 82 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 Seattle to Toronto Pearson Intl Airport?
Currently, January is the cheapest month in which you can book a flight from Seattle to Toronto Pearson Intl Airport (average of $265). Flying from Seattle to Toronto Pearson Intl Airport in December is currently the most expensive (average of $549). 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 SEA to YYZ?
Find hourly flight availability from Seattle to Pearson Intl. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated August 19, 2026.
Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Seattle to Toronto Pearson Intl Airport as you normally would.
The best insider tips for Seattle to Toronto Pearson Intl Airport flights
AI-powered summary based on content written by travel experts. AI can make mistakes.
Cheapflights partnered with top experts to bring you the best recommendations for your Seattle to Toronto Pearson Intl Airport trip
Our travel experts
Reviews of airlines servicing Pearson Intl
Get insights into the airlines that provide service to Pearson Intl. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Pearson Intl. Reviews last updated August 19, 2026.
Peruse reviews from past customers who have flown with Alaska Airlines,Delta, andUnited Airlines from Seattle to Toronto Pearson Intl Airport to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Crew
8.5
Food
7.0
Overall
7.9
Entertainment
7.0
Comfort
7.8
Boarding
8.1
Reviews
1 / 20
6.0
GoodAnonymous,Jul 2026
SEA - LHR
Crew
8.5
Food
7.0
Overall
7.9
Entertainment
7.0
Comfort
7.8
Boarding
8.1
Reviews
1 / 20
6.0
GoodAnonymous,Jul 2026
SEA - LHR
Crew
8.5
Food
7.0
Overall
7.9
Entertainment
7.0
Comfort
7.8
Boarding
8.1
Reviews
1 / 20
6.0
GoodAnonymous,Jul 2026
SEA - LHR
Crew
8.5
Food
7.0
Overall
7.9
Entertainment
7.0
Comfort
7.8
Boarding
8.1
Reviews
1 / 20
6.0
GoodAnonymous,Jul 2026
SEA - LHR
Crew
8.5
Food
7.0
Overall
7.9
Entertainment
7.0
Comfort
7.8
Boarding
8.1
Reviews
1 / 20
6.0
GoodAnonymous,Jul 2026
SEA - LHR
Crew
8.5
Food
7.0
Overall
7.9
Entertainment
7.0
Comfort
7.8
Boarding
8.1
Reviews
1 / 20
6.0
GoodAnonymous,Jul 2026
SEA - LHR
Related info for your journey
Find useful and relevant information for your journey from Seattle to Pearson Intl. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
Traveling to a place near Toronto Pearson Intl Airport?
Book flights to Toronto Pearson Intl Airport if you plan to visit one of these locationsMarkham
Brampton
Vaughan
Collingwood
Pickering
Oakville
Owen Sound
Kitchener
Cambridge
Whitby
Burlington
Ajax
Orillia
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Seattle and Pearson Intl flights
Browse other Seattle and Pearson Intl flight options. Last updated on August 19, 2026.
Other flights from Seattle
Browse through other flights departing from Seattle. Flights are based on user searches made on Cheapflights and were last updated on August 19, 2026.
Other flights to Pearson Intl
Explore flights to Pearson Intl departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on August 19, 2026.
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Check out other popular destinations found by fellow travelers in 2026
Top 5 airlines flying from Seattle to Pearson Intl
Discover the top 5 airlines that operate flights from Seattle to Pearson Intl. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 7,457,451 searches. Data last updated August 19, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$132 | Average$419 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$132 | Average$414 | FlexibilityNo cancel fee | On-time67% | |
| Cheapest$226 | Average$362 | FlexibilityNo cancel fee | On-time60% | |
| Cheapest$250 | Average$445 | FlexibilityNo cancel fee | On-time75% | |
| Cheapest$277 | Average$519 | FlexibilityNo cancel fee | On-time69% |