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: Mon Sep 11 2017 Return: Fri Oct 6 2017 Trip spans 26 days
Major Airline
Major Airline
YYZ
4:00a
SEA
2:25p
10h 25m
2 stops
SEA
3:15a
YYZ
12:27p
9h 12m
2 stops
Depart: Tue Jun 13 2017 Return: Sun Jun 25 2017 Trip spans 13 days
WestJet
WestJet
YYZ
6:10a
SEA
2:52p
8h 42m
1 stop
SEA
5:50a
YYZ
1:00p
7h 10m
1 stop
Depart: Thu Sep 14 2017 Return: Mon Sep 18 2017 Trip spans 5 days
Delta
Delta
YYZ
1:05p
SEA
10:22p
9h 17m
1 stop
SEA
6:45p
YYZ
1:40a
6h 55m
1 stop
Depart: Thu Jun 8 2017 Return: Mon Jun 12 2017 Trip spans 5 days
United
United
YYZ
9:46a
SEA
8:13p
10h 27m
1 stop
SEA
6:30p
YYZ
2:38a
8h 08m
1 stop
Depart: Thu Aug 17 2017 Return: Mon Aug 28 2017 Trip spans 12 days
Air Canada
Air Canada
YYZ
3:30p
SEA
8:49p
5h 19m
nonstop
SEA
7:00a
YYZ
11:33a
4h 33m
nonstop
Depart: Wed Jun 14 2017 Return: Sat Jun 24 2017 Trip spans 11 days
Major Airline
Major Airline
YYZ
10:30a
SEA
9:10p
10h 40m
nonstop
SEA
3:25a
YYZ
12:30p
9h 05m
nonstop
Depart: Fri Jun 16 2017 Return: Sun Jun 25 2017 Trip spans 10 days
WestJet
WestJet
YYZ
6:10a
SEA
2:52p
8h 42m
1 stop
SEA
5:50a
YYZ
3:00p
9h 10m
1 stop
Depart: Tue Nov 21 2017 Return: Tue Nov 28 2017 Trip spans 8 days
Delta
Delta
YYZ
12:05p
SEA
9:22p
9h 17m
1 stop
SEA
8:10a
YYZ
3:23p
7h 13m
1 stop
Depart: Tue Jun 6 2017 Return: Wed Jun 7 2017 Trip spans 2 days
United
United
YYZ
2:00a
SEA
10:19a
8h 19m
1 stop
SEA
8:48p
YYZ
4:36a
7h 48m
1 stop
Depart: Thu Jun 15 2017 Return: Tue Jun 27 2017 Trip spans 13 days
Major Airline
Major Airline
YYZ
10:30a
SEA
9:10p
10h 40m
2 stops
SEA
12:50p
YYZ
7:59p
7h 09m
2 stops
Depart: Wed Jun 21 2017 Return: Sun Jul 9 2017 Trip spans 19 days
WestJet
WestJet
YYZ
7:30a
SEA
3:54p
8h 24m
1 stop
SEA
5:50a
YYZ
2:59p
9h 09m
1 stop
Depart: Sat Sep 30 2017 Return: Tue Oct 31 2017 Trip spans 32 days
Delta
Delta
YYZ
11:20a
SEA
6:37p
7h 17m
1 stop
SEA
2:00a
YYZ
8:37a
6h 37m
1 stop
Depart: Wed Jun 7 2017 Return: Sun Jun 11 2017 Trip spans 5 days
United
United
YYZ
3:40a
SEA
1:17p
9h 37m
1 stop
SEA
2:15a
YYZ
12:01p
9h 46m
1 stop
Depart: Fri Jun 23 2017 Return: Sun Jul 9 2017 Trip spans 17 days
WestJet
WestJet
YYZ
2:45a
SEA
11:25a
8h 40m
1 stop
SEA
5:50a
YYZ
2:59p
9h 09m
1 stop
Depart: Tue Jun 27 2017 Return: Sun Jul 16 2017 Trip spans 20 days
Major Airline
Major Airline
YYZ
10:30a
SEA
9:10p
10h 40m
nonstop
SEA
11:30p
YYZ
7:44a
8h 14m
nonstop
Depart: Fri Oct 6 2017 Return: Sat Oct 21 2017 Trip spans 16 days
Delta
Delta
YYZ
1:05p
SEA
10:22p
9h 17m
1 stop
SEA
9:10a
YYZ
4:23p
7h 13m
1 stop
Depart: Fri Jun 9 2017 Return: Sun Jun 11 2017 Trip spans 3 days
United
United
YYZ
9:46a
SEA
8:15p
10h 29m
1 stop
SEA
2:15a
YYZ
10:24a
8h 09m
1 stop
Depart: Thu Sep 7 2017 Return: Sun Sep 24 2017 Trip spans 18 days
Major Airline
Major Airline
YYZ
12:50a
SEA
9:00a
8h 10m
nonstop
SEA
11:40p
YYZ
7:42a
8h 02m
nonstop
Depart: Fri Sep 8 2017 Return: Mon Sep 18 2017 Trip spans 11 days
WestJet
WestJet
YYZ
4:50a
SEA
1:00p
8h 10m
1 stop
SEA
3:40a
YYZ
11:42a
8h 02m
1 stop
Depart: Tue Aug 22 2017 Return: Wed Aug 30 2017 Trip spans 9 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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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
$377
Destination

Seattle
$377
Airlines Airline reviews

57 travelers who booked a flight from Toronto to Seattle rated their chosen airlines with an average of 6.2.

Overall
6.1
Boarding
6.3
Crew
6.7
Comfort
6.1
Food
4.7
Entertainment
6.1