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 14/5. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — YTO
25 Feb — 4 Mar1
Round-trip
1 adult
Economy
Round-trip
1 adult, Economy, 0 bags
Cheapflights Tip: The best prices from Seattle/Tacoma Intl to Toronto are usually found in January or November, booked 75 days in advance, depart on a Wednesday or Thursday and return on a Thursday
Cheap flight deals from Seattle to Toronto
Enter your travel dates to find the best prices.
Cheapest flights from Seattle to Toronto
Explore the most affordable flight options available from Seattle to Toronto. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 26 January 2026.
Tue 10/38:10 a.m.
SEA
-
YYZ
Nonstop4h 43m
Air Canada
Tue 17/38:00 a.m.
YYZ
-
SEA
1 stop10h 01m
Air Canada
Deal found 24/1C$ 301
Sat 21/28:00 a.m.
SEA
-
YYZ
Nonstop4h 43m
Air Canada
Sat 28/28:00 a.m.
YYZ
-
SEA
1 stop9h 31m
Air Canada
Deal found 23/1C$ 304
Sat 14/38:10 a.m.
SEA
-
YYZ
Nonstop4h 43m
Air Canada
Tue 17/38:00 a.m.
YYZ
-
SEA
1 stop10h 01m
Air Canada
Deal found 25/1C$ 305
Tue 10/37:55 a.m.
SEA
-
YYZ
Nonstop4h 40m
Alaska Airlines
Tue 17/34:45 p.m.
YYZ
-
SEA
Nonstop5h 33m
Alaska Airlines
Deal found 24/1C$ 311
Sat 28/28:00 a.m.
SEA
-
YYZ
Nonstop4h 43m
Multiple Airlines
Sat 7/34:45 p.m.
YYZ
-
SEA
Nonstop5h 33m
Multiple Airlines
Deal found 24/1C$ 315
Sat 14/37:55 a.m.
SEA
-
YYZ
Nonstop4h 40m
Alaska Airlines
Tue 17/34:45 p.m.
YYZ
-
SEA
Nonstop5h 33m
Alaska Airlines
Deal found 25/1C$ 320
Mon 11/57:05 a.m.
SEA
-
YYZ
1 stop7h 17m
WestJet
Sat 16/58:00 a.m.
YYZ
-
SEA
1 stop8h 08m
WestJet
Deal found 24/1C$ 327
Sat 2/52:05 p.m.
SEA
-
YKF
1 stop7h 40m
WestJet
Sat 9/56:00 a.m.
YKF
-
SEA
1 stop10h 08m
WestJet
Deal found 24/1C$ 352
Tue 12/57:15 a.m.
SEA
-
YTZ
1 stop9h 37m
Air Canada
Sun 17/512:30 p.m.
YTZ
-
SEA
1 stop10h 07m
Air Canada
Deal found 24/1C$ 371
Sat 2/57:05 a.m.
SEA
-
YHM
1 stop7h 10m
WestJet
Sat 9/56:10 p.m.
YHM
-
SEA
1 stop21h 58m
WestJet
Deal found 24/1C$ 378
Sat 2/57:05 a.m.
SEA
-
YHM
1 stop7h 05m
WestJet
Sun 10/56:10 p.m.
YHM
-
SEA
1 stop21h 58m
WestJet
Deal found 23/1C$ 379
Sat 2/52:05 p.m.
SEA
-
YKF
1 stop7h 40m
WestJet
Sun 10/56:00 a.m.
YKF
-
SEA
1 stop10h 08m
WestJet
Deal found 23/1C$ 390
Best flights from Seattle to Toronto
Discover carefully curated flight deals from Seattle to Toronto that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated 26 January 2026.
Sat 14/33:40 p.m.
SEA
-
YYZ
2 stops10h 58m
Air Canada
Tue 17/38:00 a.m.
YYZ
-
SEA
1 stop10h 01m
Air Canada
Deal found 25/1C$ 311
Sat 2/52:05 p.m.
SEA
-
YYZ
2 stops12h 45m
WestJet
Sat 9/58:00 a.m.
YYZ
-
SEA
1 stop8h 08m
WestJet
Deal found 24/1C$ 337
Tue 17/211:59 p.m.
SEA
-
YYZ
1 stop11h 02m
United Airlines
Wed 18/24:10 p.m.
YYZ
-
SEA
1 stop8h 02m
United Airlines
Deal found 24/1C$ 347
Wed 25/27:55 a.m.
SEA
-
YYZ
Nonstop4h 40m
Alaska Airlines
Mon 2/34:45 p.m.
YYZ
-
SEA
Nonstop5h 33m
Alaska Airlines
Deal found 25/1C$ 389
Wed 11/311:08 p.m.
SEA
-
YHM
1 stop21h 27m
Multiple Airlines
Wed 13/57:25 a.m.
YHM
-
SEA
1 stop26h 44m
Multiple Airlines
Deal found 25/1C$ 597
Sat 2/52:05 p.m.
SEA
-
YKF
1 stop7h 40m
WestJet
Sat 9/56:00 a.m.
YKF
-
SEA
1 stop10h 08m
WestJet
Deal found 24/1C$ 352
Tue 12/57:15 a.m.
SEA
-
YTZ
1 stop9h 37m
Air Canada
Sun 17/512:30 p.m.
YTZ
-
SEA
1 stop10h 07m
Air Canada
Deal found 24/1C$ 371
Wed 25/27:00 a.m.
SEA
-
YYZ
1 stop9h 45m
United Airlines
Mon 2/33:30 p.m.
YYZ
-
SEA
1 stop10h 13m
United Airlines
Deal found 25/1C$ 394
Fri 27/28:00 a.m.
SEA
-
YYZ
Nonstop4h 43m
Air Canada
Sun 1/37:50 p.m.
YYZ
-
SEA
Nonstop5h 26m
Air Canada
Deal found 25/1C$ 375
Sat 2/57:05 a.m.
SEA
-
YHM
1 stop7h 10m
WestJet
Sat 9/56:10 p.m.
YHM
-
SEA
1 stop21h 58m
WestJet
Deal found 24/1C$ 378
Mon 23/311:59 p.m.
SEA
-
YYZ
1 stop10h 44m
United Airlines
Wed 1/42:30 p.m.
YYZ
-
SEA
1 stop9h 23m
United Airlines
Deal found 25/1C$ 394
Sat 28/28:00 a.m.
SEA
-
YYZ
Nonstop4h 43m
Air Canada
Sat 7/38:20 p.m.
YYZ
-
SEA
1 stop15h 11m
Air Canada
Deal found 25/1C$ 378
Sat 2/57:05 a.m.
SEA
-
YHM
1 stop7h 05m
WestJet
Sun 10/56:10 p.m.
YHM
-
SEA
1 stop21h 58m
WestJet
Deal found 23/1C$ 379
Fri 27/28:00 a.m.
SEA
-
YYZ
Nonstop4h 43m
Air Canada
Mon 2/35:55 p.m.
YYZ
-
SEA
1 stop8h 02m
Air Canada
Deal found 25/1C$ 382
Thu 4/67:05 a.m.
SEA
-
YHM
1 stop7h 05m
WestJet
Mon 8/66:10 p.m.
YHM
-
SEA
1 stop21h 58m
WestJet
Deal found 24/1C$ 408
Thu 9/45:50 a.m.
SEA
-
YYZ
2 stops8h 52m
Air Canada
Mon 13/47:30 p.m.
YYZ
-
SEA
Nonstop5h 21m
Air Canada
Deal found 26/1C$ 389
Tue 12/57:05 a.m.
SEA
-
YHM
1 stop7h 05m
WestJet
Sun 17/56:10 p.m.
YHM
-
SEA
1 stop21h 58m
WestJet
Deal found 24/1C$ 408
Fri 6/310:05 a.m.
SEA
-
YYZ
2 stops9h 51m
Air Canada
Mon 9/37:50 p.m.
YYZ
-
SEA
Nonstop5h 26m
Air Canada
Deal found 26/1C$ 389
Fri 20/29:45 p.m.
SEA
-
YTZ
1 stop14h 35m
Multiple Airlines
Mon 23/25:10 p.m.
YTZ
-
SEA
2 stops16h 52m
Multiple Airlines
Deal found 25/1C$ 651
Thu 14/57:05 a.m.
SEA
-
YHM
1 stop7h 05m
WestJet
Mon 18/56:10 p.m.
YHM
-
SEA
1 stop29h 18m
WestJet
Deal found 24/1C$ 416
Tue 7/48:00 p.m.
SEA
-
YTZ
2 stops19h 17m
Air Canada
Sat 11/43:35 p.m.
YTZ
-
SEA
2 stops9h 35m
Air Canada
Deal found 25/1C$ 401
Sun 1/311:55 a.m.
SEA
-
YTZ
3 stops25h 48m
Multiple Airlines
Sat 7/34:30 p.m.
YTZ
-
SEA
3 stops19h 55m
Multiple Airlines
Deal found 24/1C$ 662
Wed 11/33:10 p.m.
SEA
-
YKF
1 stop11h 19m
WestJet
Tue 24/36:20 a.m.
YKF
-
SEA
1 stop10h 59m
WestJet
Deal found 24/1C$ 433
Mon 23/28:55 a.m.
SEA
-
YTZ
1 stop10h 15m
Multiple Airlines
Mon 2/33:00 p.m.
YTZ
-
SEA
1 stop10h 54m
Multiple Airlines
Deal found 24/1C$ 675
Thu 14/57:15 a.m.
SEA
-
YTZ
1 stop11h 17m
Air Canada
Mon 18/512:30 p.m.
YTZ
-
SEA
1 stop10h 07m
Air Canada
Deal found 24/1C$ 427
Thu 4/67:35 p.m.
SEA
-
YKF
1 stop21h 15m
WestJet
Mon 8/68:40 p.m.
YKF
-
SEA
1 stop16h 00m
WestJet
Deal found 26/1C$ 433
Mon 6/48:00 p.m.
SEA
-
YTZ
2 stops19h 17m
Air Canada
Fri 10/43:35 p.m.
YTZ
-
SEA
2 stops9h 35m
Air Canada
Deal found 25/1C$ 430
Tue 10/33:10 p.m.
SEA
-
YHM
1 stop23h 06m
WestJet
Tue 17/35:50 a.m.
YHM
-
SEA
1 stop11h 29m
WestJet
Deal found 24/1C$ 452
Wed 11/33:10 p.m.
SEA
-
YHM
1 stop23h 06m
WestJet
Tue 24/35:50 a.m.
YHM
-
SEA
1 stop11h 29m
WestJet
Deal found 24/1C$ 457
Tue 12/57:35 p.m.
SEA
-
YKF
1 stop21h 15m
WestJet
Sun 17/58:40 p.m.
YKF
-
SEA
1 stop25h 05m
WestJet
Deal found 26/1C$ 531
Direct flights from Seattle to Toronto
Explore direct flight options from Seattle to Toronto based on user searches, and compare prices and availability for your desired travel dates. Data last updated 26 January 2026.
Tue 10/37:55 a.m.
SEA
-
YYZ
Nonstop4h 40m
Alaska Airlines
Tue 17/34:45 p.m.
YYZ
-
SEA
Nonstop5h 33m
Alaska Airlines
Deal found 24/1C$ 311
Sat 28/28:00 a.m.
SEA
-
YYZ
Nonstop4h 43m
Multiple Airlines
Sat 7/34:45 p.m.
YYZ
-
SEA
Nonstop5h 33m
Multiple Airlines
Deal found 24/1C$ 315
Sat 14/37:55 a.m.
SEA
-
YYZ
Nonstop4h 40m
Alaska Airlines
Tue 17/34:45 p.m.
YYZ
-
SEA
Nonstop5h 33m
Alaska Airlines
Deal found 25/1C$ 320
Wed 18/28:00 a.m.
SEA
-
YYZ
Nonstop4h 43m
Air Canada
Tue 24/27:50 p.m.
YYZ
-
SEA
Nonstop5h 26m
Air Canada
Deal found 24/1C$ 345
Mon 16/28:00 a.m.
SEA
-
YYZ
Nonstop4h 43m
Air Canada
Sat 21/27:50 p.m.
YYZ
-
SEA
Nonstop5h 26m
Air Canada
Deal found 24/1C$ 360
Thu 5/38:10 a.m.
SEA
-
YYZ
Nonstop4h 43m
Air Canada
Mon 9/37:50 p.m.
YYZ
-
SEA
Nonstop5h 26m
Air Canada
Deal found 26/1C$ 375
Mon 23/27:55 a.m.
SEA
-
YYZ
Nonstop4h 40m
Alaska Airlines
Fri 27/24:45 p.m.
YYZ
-
SEA
Nonstop5h 33m
Alaska Airlines
Deal found 24/1C$ 389
Thu 12/38:10 a.m.
SEA
-
YYZ
Nonstop4h 43m
Air Canada
Sun 15/37:50 p.m.
YYZ
-
SEA
Nonstop5h 26m
Air Canada
Deal found 26/1C$ 403
Fri 20/27:55 a.m.
SEA
-
YYZ
Nonstop4h 40m
Alaska Airlines
Mon 23/24:45 p.m.
YYZ
-
SEA
Nonstop5h 33m
Alaska Airlines
Deal found 23/1C$ 404
Tue 17/28:00 a.m.
SEA
-
YYZ
Nonstop4h 43m
Air Canada
Sat 21/27:50 p.m.
YYZ
-
SEA
Nonstop5h 26m
Air Canada
Deal found 24/1C$ 419
Sun 15/28:00 a.m.
SEA
-
YYZ
Nonstop4h 43m
Air Canada
Mon 23/27:50 p.m.
YYZ
-
SEA
Nonstop5h 26m
Air Canada
Deal found 24/1C$ 434
Last-minute flights from Seattle to Toronto
Discover last-minute flight deals from Seattle to Toronto. Data last updated 26 January 2026 and is based on user searches.
Sun 1/29:25 p.m.
SEA
-
YYZ
1 stop30h 18m
Multiple Airlines
Sat 7/210:15 p.m.
YYZ
-
SEA
1 stop12h 00m
Multiple Airlines
Deal found 24/1C$ 599
Mon 2/23:10 p.m.
SEA
-
YYZ
2 stops11h 48m
WestJet
Sun 8/28:45 p.m.
YYZ
-
SEA
1 stop16h 40m
WestJet
Deal found 24/1C$ 631
Thu 5/29:25 p.m.
SEA
-
YYZ
1 stop30h 18m
Multiple Airlines
Mon 9/27:55 p.m.
YYZ
-
SEA
1 stop17h 59m
Multiple Airlines
Deal found 25/1C$ 609
Thu 5/29:25 p.m.
SEA
-
YYZ
2 stops29h 48m
Multiple Airlines
Sun 8/210:15 p.m.
YYZ
-
SEA
1 stop12h 00m
Multiple Airlines
Deal found 25/1C$ 652
Wed 18/23:10 p.m.
SEA
-
YHM
1 stop23h 06m
WestJet
Wed 25/26:10 p.m.
YHM
-
SEA
1 stop23h 09m
WestJet
Deal found 25/1C$ 757
Thu 19/23:10 p.m.
SEA
-
YHM
1 stop19h 11m
WestJet
Mon 2/36:10 p.m.
YHM
-
SEA
1 stop23h 09m
WestJet
Deal found 26/1C$ 664
Fri 20/23:41 p.m.
SEA
-
YKF
2 stops10h 48m
Multiple Airlines
Mon 23/26:20 a.m.
YKF
-
SEA
1 stop10h 59m
Multiple Airlines
Deal found 23/1C$ 634
Fri 20/23:41 p.m.
SEA
-
YKF
2 stops10h 48m
Multiple Airlines
Sat 21/27:00 p.m.
YKF
-
SEA
2 stops15h 02m
Multiple Airlines
Deal found 23/1C$ 744
Fri 20/27:55 a.m.
SEA
-
YHM
1 stop11h 23m
Multiple Airlines
Mon 23/28:15 a.m.
YHM
-
SEA
1 stop13h 37m
Multiple Airlines
Deal found 23/1C$ 760
Mon 23/211:55 a.m.
SEA
-
YKF
2 stops14h 34m
WestJet
Mon 2/36:20 a.m.
YKF
-
SEA
1 stop10h 59m
WestJet
Deal found 26/1C$ 545
Mon 23/211:55 a.m.
SEA
-
YHM
2 stops10h 25m
Multiple Airlines
Mon 2/36:10 p.m.
YHM
-
SEA
1 stop23h 09m
Multiple Airlines
Deal found 26/1C$ 671
Sat 28/25:50 a.m.
SEA
-
YHM
1 stop14h 45m
Multiple Airlines
Sat 7/38:15 a.m.
YHM
-
SEA
1 stop16h 51m
Multiple Airlines
Deal found 24/1C$ 548
One-way flights from Seattle to Toronto
Search for one-way flight options from Seattle to Toronto. Find affordable one-way fares based on user searches. Data last updated 26 January 2026.
Thu 14/57:35 p.m.
SEA
-
YYZ
1 stop7h 10m
WestJet
Deal found 25/1C$ 134
Sat 14/38:10 a.m.
SEA
-
YYZ
Nonstop4h 43m
Air Canada
Deal found 26/1C$ 137
Wed 11/33:10 p.m.
SEA
-
YYZ
2 stops11h 48m
WestJet
Deal found 24/1C$ 144
Tue 19/57:15 a.m.
SEA
-
YYZ
1 stop9h 43m
Air Canada
Deal found 25/1C$ 148
Tue 19/57:15 a.m.
SEA
-
YTZ
1 stop9h 37m
Air Canada
Deal found 25/1C$ 148
Sat 14/39:20 a.m.
SEA
-
YYZ
1 stop19h 10m
United Airlines
Deal found 26/1C$ 151
Tue 19/57:05 a.m.
SEA
-
YYZ
2 stops10h 55m
WestJet
Deal found 25/1C$ 152
Wed 25/27:00 a.m.
SEA
-
YYZ
1 stop9h 45m
United Airlines
Deal found 23/1C$ 153
Sat 21/28:17 a.m.
SEA
-
YYZ
1 stop7h 40m
United Airlines
Deal found 24/1C$ 155
Wed 11/38:00 p.m.
SEA
-
YTZ
2 stops12h 42m
Air Canada
Deal found 25/1C$ 155
Sun 19/49:35 p.m.
SEA
-
YYZ
1 stop29h 45m
Multiple Airlines
Deal found 26/1C$ 156
Thu 12/310:05 a.m.
SEA
-
YYZ
1 stop7h 54m
Air Canada
Deal found 24/1C$ 159
Find flight deals from Seattle to Toronto
Discover tips and strategies to find the most affordable flight options for your journey from Seattle (SEA) to Toronto (YTO). 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 26 January 2026.
Customize your flight search to find flights from Seattle to Toronto 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 629,999 searches. Data last updated 26 January 2026.
Use the filters below to find and compare flights from Seattle to Toronto that are best for you.
Fly from
Seattle
Fly to
Toronto
Route
Depart
Return
Price
SeattleToronto
SEA - YYZ
SEAYYZ
Seattle/Tacoma Intl
Sat 14/3
3:40 p.m.-5:38 a.m.
2 stops10h 58m
Toronto Pearson Intl
Tue 17/3
8:00 a.m.-3:01 p.m.
1 stop10h 01m
C$ 311
SeattleToronto
SEA - YYZ
SEAYYZ
Seattle/Tacoma Intl
Sat 2/5
2:05 p.m.-5:50 a.m.
2 stops12h 45m
Toronto Pearson Intl
Sat 9/5
8:00 a.m.-1:08 p.m.
1 stop8h 08m
C$ 337
SeattleToronto
SEA - YYZ
SEAYYZ
Seattle/Tacoma Intl
Tue 17/2
11:59 p.m.-2:01 p.m.
1 stop11h 02m
Toronto Pearson Intl
Wed 18/2
4:10 p.m.-9:12 p.m.
1 stop8h 02m
C$ 347
SeattleToronto
SEA - YKF
SEAYKF
Seattle/Tacoma Intl
Sat 2/5
2:05 p.m.-12:45 a.m.
1 stop7h 40m
Toronto Region of Waterloo Intl
Sat 9/5
6:00 a.m.-1:08 p.m.
1 stop10h 08m
C$ 352
SeattleToronto
SEA - YTZ
SEAYTZ
Seattle/Tacoma Intl
Tue 12/5
7:15 a.m.-7:52 p.m.
1 stop9h 37m
Toronto Island
Sun 17/5
12:30 p.m.-7:37 p.m.
1 stop10h 07m
C$ 371
SeattleToronto
SEA - YYZ
SEAYYZ
Seattle/Tacoma Intl
Fri 27/2
8:00 a.m.-3:43 p.m.
Nonstop4h 43m
Toronto Pearson Intl
Sun 1/3
7:50 p.m.-10:16 p.m.
Nonstop5h 26m
C$ 375
SeattleHamilton
SEA - YHM
SEAYHM
Seattle/Tacoma Intl
Sat 2/5
7:05 a.m.-5:15 p.m.
1 stop7h 10m
Hamilton
Sat 9/5
6:10 p.m.-1:08 p.m.
1 stop21h 58m
C$ 378
SeattleToronto
SEA - YYZ
SEAYYZ
Seattle/Tacoma Intl
Sat 28/2
8:00 a.m.-3:43 p.m.
Nonstop4h 43m
Toronto Pearson Intl
Sat 7/3
8:20 p.m.-8:31 a.m.
1 stop15h 11m
C$ 378
SeattleHamilton
SEA - YHM
SEAYHM
Seattle/Tacoma Intl
Sat 2/5
7:05 a.m.-5:10 p.m.
1 stop7h 05m
Hamilton
Sun 10/5
6:10 p.m.-1:08 p.m.
1 stop21h 58m
C$ 379
SeattleToronto
SEA - YYZ
SEAYYZ
Seattle/Tacoma Intl
Fri 27/2
8:00 a.m.-3:43 p.m.
Nonstop4h 43m
Toronto Pearson Intl
Mon 2/3
5:55 p.m.-10:57 p.m.
1 stop8h 02m
C$ 382
Flights are sorted by cheapest round-trip flights first.
Deals found on 25/1
Showing 1-10 of 60 results
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Best time to book a flight from Seattle to Toronto
Have a flexible travel schedule? Discover the best time to fly to Toronto from Seattle with our price prediction graph.
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
How far ahead should I book a flight from Seattle to Toronto?
Use this chart to determine the optimal time to book a round-trip flight from Seattle to Toronto. Price data was last updated on 23 January 2026.
Booking 75 days in advance of your planned departure date is, on average, the best time to get cheap flights from Seattle to Toronto. The general trend is that the closer you book to the departure date, the more expensive your flight will be.
What is the cheapest month to book a flight from Seattle to Toronto?
Currently, April is the cheapest month in which you can book a flight from Seattle to Toronto (average of C$ 171). Flying from Seattle to Toronto in December is currently the most expensive (average of C$ 385). 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 YTO?
Find hourly flight availability from Seattle to Toronto. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 26 January 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 as you normally would.
Weekly flight availability from Seattle to Toronto
Explore weekly flight availability from Seattle to Toronto. 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 26 January 2026.
The most flights from SEA to YTO are scheduled on a Friday (10 on average). You will have fewer flight options on Tuesday, which is when the least amount of flights are scheduled (4 on average).
How much does it cost to fly round-trip from Seattle to Toronto?
What’s the top layover airport for flights from Seattle to Toronto?
Share of one-stop round-trip flights from Seattle to Toronto chosen by Cheapflights users in the past 12 months, using the same layover each way.
Calgary (YYC) – chosen by Cheapflights users on 75% of one-stop itineraries from Seattle to Toronto on Cheapflights.
What’s the cheapest layover airport for flights from Seattle to Toronto?
Average round-trip fare for 1-stop flights from Seattle to Toronto, chosen by Cheapflights users in the past 12 months, with the same layover each way.
Calgary (YYC) is the most affordable 1-stop option, with an average round-trip price of C$ 389.
What’s the fastest layover option from Seattle to Toronto?
Shortest average travel time for 1-stop one-way flights from Seattle to Toronto, based on itineraries clicked by Cheapflights users over the past 12 months, grouped by layover airport.
Flights via Calgary (YYC) have the shortest average one-way travel time for 1-stop routes: 7h 17m.
Which airport typically offers the quickest layover for flights from Seattle to Toronto?
Average layover duration for 1-stop one-way flights from Seattle to Toronto, chosen by Cheapflights users in the last 12 months, grouped by stopover airport.
Flights via Vancouver (YVR) offer the fastest connection on this route, with an average layover time of 1h 45m.
Reviews of airlines servicing Toronto
Get insights into the airlines that provide service to Toronto. 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 Toronto. Reviews last updated 26 January 2026.
See what other customers who have flown with Alaska Airlines,WestJet, andAir Canada from Seattle to Toronto have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
I really got a lesson in upgrades. I let my seat get chosen . Both times a middle seat...on purpose ...even when we were not full. That's petty I sat behind the first class . They got more than 1 drink ...and a snack . .and the staff actually talked to them...behind a see thru shawl/sheet in the aisle....... You could see over the seats just fine and you could hear the voices just fine. But the sheet let You KNOW. Your not welcome here. For a moment I regretted not spending 300 dollars per seat so I could see a smile and eat a sandwhich and enjoy my seat . The married couple drank champain and laughed and flirted with each other. It looked so happy and care free MONEY really does buy happiness ..the hateful glares and sighs from my seat mates brought me back to reality I wasn't rich and I still had 2 hours left in this middle seat.
I really got a lesson in upgrades. I let my seat get chosen . Both times a middle seat...on purpose ...even when we were not full. That's petty I sat behind the first class . They got more than 1 drink ...and a snack . .and the staff actually talked to them...behind a see thru shawl/sheet in the aisle....... You could see over the seats just fine and you could hear the voices just fine. But the sheet let You KNOW. Your not welcome here. For a moment I regretted not spending 300 dollars per seat so I could see a smile and eat a sandwhich and enjoy my seat . The married couple drank champain and laughed and flirted with each other. It looked so happy and care free MONEY really does buy happiness ..the hateful glares and sighs from my seat mates brought me back to reality I wasn't rich and I still had 2 hours left in this middle seat.
I really got a lesson in upgrades. I let my seat get chosen . Both times a middle seat...on purpose ...even when we were not full. That's petty I sat behind the first class . They got more than 1 drink ...and a snack . .and the staff actually talked to them...behind a see thru shawl/sheet in the aisle....... You could see over the seats just fine and you could hear the voices just fine. But the sheet let You KNOW. Your not welcome here. For a moment I regretted not spending 300 dollars per seat so I could see a smile and eat a sandwhich and enjoy my seat . The married couple drank champain and laughed and flirted with each other. It looked so happy and care free MONEY really does buy happiness ..the hateful glares and sighs from my seat mates brought me back to reality I wasn't rich and I still had 2 hours left in this middle seat.
I really got a lesson in upgrades. I let my seat get chosen . Both times a middle seat...on purpose ...even when we were not full. That's petty I sat behind the first class . They got more than 1 drink ...and a snack . .and the staff actually talked to them...behind a see thru shawl/sheet in the aisle....... You could see over the seats just fine and you could hear the voices just fine. But the sheet let You KNOW. Your not welcome here. For a moment I regretted not spending 300 dollars per seat so I could see a smile and eat a sandwhich and enjoy my seat . The married couple drank champain and laughed and flirted with each other. It looked so happy and care free MONEY really does buy happiness ..the hateful glares and sighs from my seat mates brought me back to reality I wasn't rich and I still had 2 hours left in this middle seat.
Related info for your journey
Find useful and relevant information for your journey from Seattle to Toronto. 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 from for flights from Seattle to Toronto?
Seattle/Tacoma Intl (SEA), located 18.4 km from the city centre, is the airport you fly out of when you book flights from Seattle to Toronto. 3 airlines have flights from Seattle/Tacoma Intl to Toronto on a regular basis. Booking flights from Seattle/Tacoma Intl to Toronto should not be difficult; the airport handles an average of 6 outbound flights to Toronto per day.
How long is the flight from Seattle to Toronto?
For as low as C$ 311, Air Canada can have you in Toronto from Seattle in 10h 58m. Airlines will cover a distance of 3306 km. Both multi-stop and direct flights can be found to your destination and back.
What are the cheapest airlines flying from Seattle to Toronto round-trip?
According to our current data, WestJet (C$ 283), Alaska Airlines (C$ 303), and Air Canada (C$ 361) offers the cheapest pricing from Seattle to Toronto. You may be able to fly from Seattle to Toronto for 45% less than the average price by searching for these airlines.
What are the cheapest airlines to fly from Seattle to Toronto one-way?
For one-way options, check prices for WestJet. According to our data, you can fly for as low as C$ 136. Users have also found prices from C$ 137 and C$ 152 on Air Canada and Alaska Airlines, respectively.
What are the most popular routes from Seattle to Toronto?
Most travellers choose Seattle/Tacoma Intl - Toronto Pearson Intl, Seattle/Tacoma Intl - Toronto Island or Seattle/Tacoma Intl - Hamilton when deciding on the best route from Seattle to Toronto.
What are the most reliable airlines from Seattle to Toronto?
Looking for the most reliable airlines to get you to your destination on time? Our data shows these are most likely to get you from Seattle to Toronto on time: Air Canada (85%), United Airlines (85%), Alaska Airlines (83%).
What are the cheapest flights from Seattle to Toronto?
On average you can expect to pay C$ 543 for a flight from Seattle to Toronto. The cheapest flight overall is C$ 112 while the most popular route, (Seattle/Tacoma Intl - Toronto Pearson Intl) is currently priced at C$ 318.
Can I find deals for business class flights from Seattle to Toronto?
Yes. Cheapflights offers flight deals from Seattle to Toronto 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 Seattle to Toronto?
Currently, April is the cheapest month in which you can book a flight from Seattle to Toronto (average of C$ 171). Flying from Seattle to Toronto in December is currently the most expensive (average of C$ 385). 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.
Explore flights to Toronto departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on 26 January 2026.
Discover the top 3 airlines that operate flights from Seattle to Toronto. 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 629,999 searches. Data last updated 26 January 2026.
Find the best flight deals on Cheapflights, where travelers can enjoy low prices and a wide availability of flights to their desired destinations.
How does Cheapflights help users find flights from Seattle to Toronto?
Deals for Seattle to Toronto flights are sourced from 900+ travel sites when you use Cheapflights. When all flight results come back, Cheapflights lets you sort and filter flights using different criteria to choose better, like price, airport, cabin class, and plenty of other options.
Why should you use Cheapflights to find cheap flight tickets from Seattle to Toronto?
Millions of users choose and trust Cheapflights to book the best flight deals from Seattle to Toronto for free. We help you search and compare prices from hundreds of airlines for the right flight just for you.
Can Cheapflights find flights from Seattle to Toronto with no change fees?
Need flexible booking options for your flight to Toronto from Seattle? Don’t worry, Cheapflights have you covered. Use our search filter to only show flights with no change fees.
Can Cheapflights notify me if prices for flights from Seattle to Toronto become cheaper?
Yes, Cheapflights has a feature called Price Alert, which notifies users when flight prices change. Track prices for your flight to Toronto from Seattle today and book when prices fit your budget.
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