Find Deals on Flights from Seattle to Toronto

Depart
Return
1 adult
Adults
18-64
Seniors
65+
Youths
12-17
Children
2-11
Seat Infants
under 2
Lap Infants
under 2
Students
under 26
The price shown for each flight will be the average for all passengers including any infants.
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Book cheap flights from Seattle to Toronto

(Round-trip)
Depart: Wed Jan 18 2017 Return: Wed Feb 8 2017 Trip spans 22 days
Delta
Delta
SEA
2:40a
YYZ
2:59p
12h 19m
1 stop
YYZ
1:00a
SEA
9:31p
20h 31m
1 stop
Depart: Thu Mar 9 2017 Return: Tue Mar 14 2017 Trip spans 5 days
Major Airline
Major Airline
SEA
12:00a
YYZ
6:52a
6h 52m
nonstop
YYZ
3:53a
SEA
1:06p
9h 13m
nonstop
Depart: Sat Feb 11 2017 Return: Sun Feb 12 2017 Trip spans 2 days
United
United
SEA
5:45a
YYZ
3:30p
9h 45m
1 stop
YYZ
2:30a
SEA
9:55a
7h 25m
1 stop
Depart: Thu Jan 19 2017 Return: Wed Jan 25 2017 Trip spans 7 days
American Airlines
American Airlines
SEA
1:30a
YYZ
9:30a
8h 00m
1 stop
YYZ
7:35a
SEA
6:52p
11h 17m
1 stop
Depart: Mon Mar 13 2017 Return: Mon Mar 20 2017 Trip spans 8 days
Porter Airlines
Porter Airlines
SEA
7:38p
YTZ
6:30a
10h 52m
1 stop
YTZ
8:10a
SEA
9:47p
13h 37m
1 stop
Depart: Thu Mar 16 2017 Return: Wed Mar 22 2017 Trip spans 7 days
WestJet
WestJet
SEA
6:00a
YYZ
5:12p
11h 12m
1 stop
YYZ
5:05a
SEA
1:21p
8h 16m
1 stop
Depart: Mon Jan 16 2017 Return: Thu Jan 19 2017 Trip spans 4 days
Air Canada
Air Canada
SEA
3:10a
YYZ
7:45a
4h 35m
nonstop
YYZ
9:00a
SEA
6:35p
9h 35m
1 stop
Depart: Thu Mar 23 2017 Return: Mon Mar 27 2017 Trip spans 5 days
Major Airline
Major Airline
SEA
2:00a
YYZ
11:37a
9h 37m
3 stops
YYZ
10:45p
SEA
9:32a
10h 47m
2 stops
Depart: Tue Apr 11 2017 Return: Mon Apr 17 2017 Trip spans 7 days
Delta
Delta
SEA
8:55p
YYZ
7:02a
10h 07m
2 stops
YYZ
1:15p
SEA
8:45p
7h 30m
1 stop
Depart: Wed Jan 11 2017 Return: Sun Jan 15 2017 Trip spans 5 days
United
United
SEA
1:45a
YYZ
8:30a
6h 45m
1 stop
YYZ
2:00a
SEA
9:57a
7h 57m
1 stop
Depart: Tue Jan 17 2017 Return: Tue Jan 24 2017 Trip spans 8 days
American Airlines
American Airlines
SEA
1:30a
YYZ
9:30a
8h 00m
1 stop
YYZ
5:16a
SEA
2:16p
9h 00m
1 stop
Depart: Tue Mar 14 2017 Return: Thu Mar 23 2017 Trip spans 10 days
Major Airline
Major Airline
SEA
2:00a
YYZ
8:52a
6h 52m
1 stop
YYZ
6:00a
SEA
2:50p
8h 50m
1 stop
Depart: Tue Feb 14 2017 Return: Wed Feb 22 2017 Trip spans 9 days
Delta
Delta
SEA
8:00a
YYZ
2:59p
30h 59m
1 stop
YYZ
5:30a
SEA
9:03p
15h 33m
1 stop
Depart: Sat Jan 14 2017 Return: Mon Jan 16 2017 Trip spans 3 days
United
United
SEA
1:30a
YYZ
8:30a
7h 00m
1 stop
YYZ
12:25p
SEA
8:25p
8h 00m
1 stop
Depart: Fri Jan 20 2017 Return: Wed Jan 25 2017 Trip spans 6 days
American Airlines
American Airlines
SEA
1:30a
YYZ
9:30a
8h 00m
1 stop
YYZ
6:45a
SEA
2:16p
7h 31m
1 stop
Depart: Sun Mar 12 2017 Return: Wed Mar 22 2017 Trip spans 11 days
WestJet
WestJet
SEA
4:55p
YYZ
11:37p
6h 42m
1 stop
YYZ
5:05a
SEA
1:21p
8h 16m
1 stop
Depart: Mon Feb 13 2017 Return: Wed Feb 15 2017 Trip spans 3 days
Major Airline
Major Airline
SEA
9:05p
YYZ
4:30a
7h 25m
1 stop
YYZ
1:45a
SEA
9:40a
7h 55m
1 stop
Depart: Thu Jan 12 2017 Return: Mon Jan 16 2017 Trip spans 5 days
Delta
Delta
SEA
8:00a
YYZ
9:39a
25h 39m
1 stop
YYZ
1:00a
SEA
9:31p
20h 31m
1 stop
Depart: Sat Jan 21 2017 Return: Thu Jan 26 2017 Trip spans 6 days
American Airlines
American Airlines
SEA
3:00a
YYZ
11:25a
8h 25m
1 stop
YYZ
6:45a
SEA
2:16p
7h 31m
1 stop
Depart: Sun Jan 22 2017 Return: Fri Jan 27 2017 Trip spans 6 days
United
United
SEA
5:45a
YYZ
12:10p
6h 25m
1 stop
YYZ
9:50a
SEA
5:29p
7h 39m
1 stop
* Prices are per person and are for e–tickets and include all taxes & fees in USD.

We attempt to get accurate prices, however, prices are not guaranteed.

Here's why:

We’re not the seller.
At KAYAK we don’t set the prices, so it’s not possible for us to guarantee what other companies are selling.

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Our service lets you quickly and easily compare results from hundreds of travel sites at once. In this sense, KAYAK is a search engine and we can't guarantee prices we find.

Why aren’t prices accurate 100% of the time?
Prices on airline seats, hotel rooms and car rentals can change frequently. Several people may also be trying to buy the same travel option simultaneously. As a result, you may find, on occasion, that certain prices are no longer available.

If you have more questions or if you have a bad price to report to us,
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Airports
Origin

Seattle
$451
Destination

Toronto
only $451
only $550
Airlines Airline reviews

37 travelers who booked a flight from Seattle to Toronto rated their chosen airlines with an average of 6.5.

Overall
6.8
Boarding
6.6
Crew
7.4
Comfort
6.5
Food
5.5
Entertainment
6.2