Find Cheap Flights from Toronto to Seattle

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

(Round-trip)
Depart: Tue May 16 2017 Return: Mon May 29 2017 Trip spans 14 days
WestJet
WestJet
YYZ
7:30a
SEA
3:17p
7h 47m
1 stop
SEA
3:00p
YYZ
11:20p
8h 20m
1 stop
Depart: Fri May 26 2017 Return: Mon May 29 2017 Trip spans 4 days
Major Airline
Major Airline
YYZ
1:00a
SEA
8:06a
7h 06m
1 stop
SEA
1:00a
YYZ
2:06a
1h 06m
1 stop
Depart: Sat May 27 2017 Return: Fri Jun 2 2017 Trip spans 7 days
Delta
Delta
YYZ
1:15p
SEA
8:31p
7h 16m
1 stop
SEA
8:45p
YYZ
5:09a
8h 24m
1 stop
Depart: Thu Jun 8 2017 Return: Sun Jun 11 2017 Trip spans 4 days
Air Canada
Air Canada
YYZ
6:30a
SEA
7:51p
13h 21m
2 stops
SEA
5:25p
YYZ
12:51a
7h 26m
1 stop
Depart: Sat Jun 17 2017 Return: Mon Jun 19 2017 Trip spans 3 days
United
United
YYZ
4:10a
SEA
9:22a
5h 12m
nonstop
SEA
3:05p
YYZ
11:58p
8h 53m
1 stop
Depart: Tue May 9 2017 Return: Tue May 23 2017 Trip spans 15 days
Alaska Airlines
Alaska Airlines
YYZ
7:45a
SEA
5:14p
9h 29m
1 stop
SEA
8:35p
YYZ
4:01a
7h 26m
1 stop
Depart: Mon Aug 28 2017 Return: Fri Sep 8 2017 Trip spans 12 days
American Airlines
American Airlines
YYZ
2:50p
SEA
11:15p
8h 25m
1 stop
SEA
1:59p
YYZ
2:41a
12h 42m
2 stops
Depart: Sat Jun 10 2017 Return: Wed Jun 14 2017 Trip spans 5 days
WestJet
WestJet
YYZ
6:10a
SEA
4:14p
10h 04m
1 stop
SEA
10:00a
YYZ
5:45p
7h 45m
1 stop
Depart: Wed Jun 28 2017 Return: Wed Jul 5 2017 Trip spans 8 days
Major Airline
Major Airline
YYZ
7:30a
SEA
3:23p
7h 53m
1 stop
SEA
4:45a
YYZ
11:29a
6h 44m
1 stop
Depart: Fri Sep 15 2017 Return: Mon Sep 18 2017 Trip spans 4 days
Delta
Delta
YYZ
1:05p
SEA
10:22p
9h 17m
1 stop
SEA
7:20p
YYZ
1:30a
6h 10m
1 stop
Depart: Sun Jun 18 2017 Return: Tue Jun 27 2017 Trip spans 10 days
WestJet
WestJet
YYZ
6:10a
SEA
3:54p
9h 44m
1 stop
SEA
10:00a
YYZ
5:45p
7h 45m
1 stop
Depart: Fri Sep 29 2017 Return: Mon Oct 2 2017 Trip spans 4 days
Major Airline
Major Airline
YYZ
3:53a
SEA
1:08p
9h 15m
1 stop
SEA
12:45p
YYZ
7:58p
7h 13m
1 stop
Depart: Thu Sep 28 2017 Return: Mon Oct 2 2017 Trip spans 5 days
Delta
Delta
YYZ
1:05p
SEA
10:22p
9h 17m
1 stop
SEA
6:15p
YYZ
2:40a
8h 25m
1 stop
Depart: Tue Sep 12 2017 Return: Wed Sep 20 2017 Trip spans 9 days
WestJet
WestJet
YYZ
4:50a
SEA
1:00p
8h 10m
1 stop
SEA
3:40a
YYZ
11:42a
8h 02m
1 stop
Depart: Fri May 12 2017 Return: Sat May 20 2017 Trip spans 9 days
Major Airline
Major Airline
YYZ
10:30a
SEA
9:13p
10h 43m
nonstop
SEA
1:40a
YYZ
9:29a
7h 49m
nonstop
Depart: Thu Sep 14 2017 Return: Tue Sep 19 2017 Trip spans 6 days
Delta
Delta
YYZ
1:05p
SEA
10:22p
9h 17m
1 stop
SEA
2:00a
YYZ
8:37a
6h 37m
1 stop
Depart: Tue Aug 29 2017 Return: Fri Sep 8 2017 Trip spans 11 days
American Airlines
American Airlines
YYZ
2:50p
SEA
11:15p
8h 25m
1 stop
SEA
1:59p
YYZ
2:41a
12h 42m
2 stops
Depart: Thu Jun 1 2017 Return: Thu Jun 8 2017 Trip spans 8 days
WestJet
WestJet
YYZ
11:00a
SEA
6:49p
7h 49m
1 stop
SEA
6:00a
YYZ
1:00p
7h 00m
1 stop
Depart: Thu Jun 15 2017 Return: Sun Jun 25 2017 Trip spans 11 days
Major Airline
Major Airline
YYZ
3:47a
SEA
1:23p
9h 36m
nonstop
SEA
9:09a
YYZ
7:15p
10h 06m
nonstop
Depart: Mon Jul 10 2017 Return: Wed Jul 12 2017 Trip spans 3 days
Delta
Delta
YYZ
10:00a
SEA
6:50p
8h 50m
1 stop
SEA
4:45p
YYZ
11:58p
7h 13m
1 stop
* Prices are per person and are for e–tickets and include all taxes & fees in USD.

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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.

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Airports
Origin

Toronto
$357
Destination

Seattle
$357
Airlines Airline reviews

56 travelers who booked a flight from Toronto to Seattle rated their chosen airlines with an average of 6.1.

Overall
6.1
Boarding
6.3
Crew
6.7
Comfort
6.1
Food
4.6
Entertainment
6.0