Find cheap flights from Toronto to Seattle

Find cheap flights from Toronto to Seattle

Round-trip
Economy
Toronto (YTO)
Seattle/Tacoma Intl
Tue. 11/8
Tue. 18/8
Any month
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FAQs for booking Toronto to Seattle flights

Which airlines have a flexible cancellation policy for flights from Toronto to Seattle due to COVID-19?

How does KAYAK find such low prices on flights from Toronto to Seattle?

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Top airlines flying from Toronto to Seattle

Scores according to KAYAK customer reviews

8.7
Japan Airlines
Overall score based on 4,475 reviews
8.9
Boarding
8.6
Comfort
9.0
Crew
8.5
Entertainment
8.4
Food
Airline reviews
Read more about Japan Airlines

Book cheap flights from Toronto to Seattle

Recent round-trip flight deals

1/9
Tue.
2 stops
Multiple Airlines
20h 36m
YTZ - SEA
18/9
Fri.
3 stops
Multiple Airlines
29h 05m
SEA - YTZ
27/8
Thu.
1 stop
Cathay Pacific
11h 24m
YYZ - SEA
29/8
Sat.
1 stop
Cathay Pacific
8h 33m
SEA - YYZ
27/8
Thu.
1 stop
British Airways
8h 56m
YYZ - SEA
29/8
Sat.
1 stop
British Airways
23h 12m
SEA - YYZ
1/9
Tue.
1 stop
Delta
7h 06m
YYZ - SEA
19/9
Sat.
1 stop
Delta
6h 38m
SEA - YYZ
27/8
Thu.
2 stops
Lufthansa
10h 15m
YYZ - SEA
29/8
Sat.
1 stop
Lufthansa
6h 39m
SEA - YYZ
8/8
Sat.
1 stop
Royal Jordanian
10h 58m
YYZ - SEA
23/8
Sun.
1 stop
Royal Jordanian
10h 20m
SEA - YYZ
8/8
Sat.
2 stops
Japan Airlines
11h 58m
YYZ - SEA
23/8
Sun.
2 stops
Japan Airlines
11h 50m
SEA - YYZ
8/8
Sat.
1 stop
Aer Lingus
9h 55m
YYZ - SEA
23/8
Sun.
1 stop
Aer Lingus
6h 39m
SEA - YYZ
1/8
Sat.
2 stops
Qantas Airways
11h 58m
YYZ - SEA
23/8
Sun.
2 stops
Qantas Airways
11h 50m
SEA - YYZ
8/8
Sat.
1 stop
Ethiopian Air
9h 16m
YYZ - SEA
23/8
Sun.
1 stop
Ethiopian Air
17h 38m
SEA - YYZ
27/8
Thu.
1 stop
Delta
10h 02m
YYZ - SEA
28/8
Fri.
1 stop
Delta
8h 50m
SEA - YYZ
8/8
Sat.
1 stop
Cathay Pacific
11h 24m
YYZ - SEA
23/8
Sun.
1 stop
Cathay Pacific
8h 33m
SEA - YYZ
8/8
Sat.
1 stop
British Airways
11h 24m
YYZ - SEA
23/8
Sun.
2 stops
British Airways
11h 50m
SEA - YYZ
1/9
Tue.
2 stops
Multiple Airlines
20h 36m
YTZ - SEA
19/9
Sat.
2 stops
Multiple Airlines
16h 08m
SEA - YTZ
1/8
Sat.
1 stop
Royal Jordanian
10h 58m
YYZ - SEA
23/8
Sun.
1 stop
Royal Jordanian
10h 20m
SEA - YYZ
8/8
Sat.
2 stops
British Airways
11h 32m
YYZ - SEA
23/8
Sun.
2 stops
British Airways
11h 50m
SEA - YYZ
1/8
Sat.
1 stop
Cathay Pacific
11h 24m
YYZ - SEA
23/8
Sun.
1 stop
Cathay Pacific
8h 33m
SEA - YYZ
Show more results

Recent one-way flight deals

1/8
Sat.
1 stop
Cathay Pacific
11h 41m
YYZ - SEA
1/8
Sat.
1 stop
British Airways
7h 33m
YYZ - SEA
28/7
Tue.
1 stop
Royal Jordanian
7h 33m
YYZ - SEA
1/8
Sat.
2 stops
Qantas Airways
11h 58m
YYZ - SEA
16/8
Sun.
1 stop
Multiple Airlines
7h 05m
YYZ - SEA
13/8
Thu.
1 stop
Delta
7h 10m
YYZ - SEA
24/7
Fri.
2 stops
Japan Airlines
11h 58m
YYZ - SEA
15/8
Sat.
1 stop
Lufthansa
23h 00m
YYZ - SEA
16/8
Sun.
2 stops
Korean Air
11h 57m
YYZ - SEA
3/8
Mon.
1 stop
Aer Lingus
7h 40m
YYZ - SEA
1/8
Sat.
2 stops
SWISS
12h 22m
YYZ - SEA
15/8
Sat.
2 stops
Asiana Airlines
15h 05m
YYZ - SEA
3/8
Mon.
2 stops
Air New Zealand
24h 29m
YYZ - SEA
1/8
Sat.
2 stops
Austrian Airlines
23h 33m
YYZ - SEA
28/7
Tue.
2 stops
Cathay Pacific
11h 10m
YYZ - SEA
24/7
Fri.
1 stop
British Airways
7h 33m
YYZ - SEA
17/8
Mon.
1 stop
Delta
10h 02m
YYZ - SEA
23/7
Thu.
2 stops
Multiple Airlines
15h 09m
YYZ - SEA
17/8
Mon.
1 stop
Lufthansa
20h 50m
YYZ - SEA
23/7
Thu.
1 stop
Cathay Pacific
11h 41m
YYZ - SEA
Show more results
*
Prices are per person, are for e–tickets and include all taxes & fees in CAD.

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.

We compile tonnes of data for you
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,
please send us an and someone from our team will get back to you promptly.

^
The fares displayed include all taxes and fees for economy class travel and were found by the provider in the last 72 hours. Seats are limited and may not be available on all flights and days. Fares are subject to change and may not be available on all flights or dates of travel. Some carriers charge additional fees for extra checked bags. Please check the carriers' sites.
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