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Cheap flights from Toronto Region of Waterloo Intl Airport to Seattle from C$ 283

1 adult
1 adult, Economy, 0 bags

Find the cheapest flights from Toronto Region of Waterloo Intl Airport to Seattle

Cheap round-trip flights

Enter your travel dates to find the best prices.
WestJet Logo
8:40 p.m. - 6:45 p.m.YKF  Toronto Region of Waterloo Intl-SEA Seattle/Tacoma Intl
25h 05m1 stop Calgary
WestJet Logo
7:35 p.m. - 7:50 p.m.SEA  Seattle/Tacoma Intl-YKF Toronto Region of Waterloo Intl
21h 15m1 stop Calgary
C$ 476WestJet
Mon, 21 Sep - Mon, 28 Sep
WestJet Logo
8:40 p.m. - 9:40 a.m.YKF  Toronto Region of Waterloo Intl-SEA Seattle/Tacoma Intl
16h 00m1 stop Calgary
WestJet Logo
7:35 p.m. - 7:50 p.m.SEA  Seattle/Tacoma Intl-YKF Toronto Region of Waterloo Intl
21h 15m1 stop Calgary
C$ 479WestJet
Wed, 16 Sep - Wed, 23 Sep
WestJet Logo
8:40 p.m. - 6:45 p.m.YKF  Toronto Region of Waterloo Intl-SEA Seattle/Tacoma Intl
25h 05m1 stop Calgary
WestJet Logo
7:35 p.m. - 7:50 p.m.SEA  Seattle/Tacoma Intl-YKF Toronto Region of Waterloo Intl
21h 15m1 stop Calgary
C$ 490WestJet
Thu, 1 Oct - Sat, 10 Oct
WestJet Logo
8:40 p.m. - 6:45 p.m.YKF  Toronto Region of Waterloo Intl-SEA Seattle/Tacoma Intl
25h 05m1 stop Calgary
WestJet Logo
7:35 p.m. - 7:50 p.m.SEA  Seattle/Tacoma Intl-YKF Toronto Region of Waterloo Intl
21h 15m1 stop Calgary
C$ 497WestJet
Fri, 18 Sep - Mon, 21 Sep
WestJet Logo
8:40 p.m. - 9:40 a.m.YKF  Toronto Region of Waterloo Intl-SEA Seattle/Tacoma Intl
16h 00m1 stop Calgary
WestJet Logo
7:35 p.m. - 7:50 p.m.SEA  Seattle/Tacoma Intl-YKF Toronto Region of Waterloo Intl
21h 15m1 stop Calgary
C$ 504WestJet
Wed, 23 Sep - Tue, 29 Sep
WestJet Logo
8:40 p.m. - 6:45 p.m.YKF  Toronto Region of Waterloo Intl-SEA Seattle/Tacoma Intl
25h 05m1 stop Calgary
WestJet Logo
7:35 p.m. - 7:50 p.m.SEA  Seattle/Tacoma Intl-YKF Toronto Region of Waterloo Intl
21h 15m1 stop Calgary
C$ 508WestJet
Wed, 14 Oct - Sun, 18 Oct
WestJet Logo
8:40 p.m. - 6:45 p.m.YKF  Toronto Region of Waterloo Intl-SEA Seattle/Tacoma Intl
25h 05m1 stop Calgary
WestJet Logo
7:35 p.m. - 7:50 p.m.SEA  Seattle/Tacoma Intl-YKF Toronto Region of Waterloo Intl
21h 15m1 stop Calgary
C$ 518WestJet
Mon, 21 Sep - Sat, 26 Sep
WestJet Logo
8:40 p.m. - 6:45 p.m.YKF  Toronto Region of Waterloo Intl-SEA Seattle/Tacoma Intl
25h 05m1 stop Calgary
WestJet Logo
7:35 p.m. - 7:50 p.m.SEA  Seattle/Tacoma Intl-YKF Toronto Region of Waterloo Intl
21h 15m1 stop Calgary
C$ 521WestJet
Mon, 21 Sep - Sat, 26 Sep
Multiple Airlines Logo
8:40 p.m. - 6:45 p.m.YKF  Toronto Region of Waterloo Intl-SEA Seattle/Tacoma Intl
25h 05m1 stop Calgary
Multiple Airlines Logo
7:35 p.m. - 3:00 p.m.SEA  Seattle/Tacoma Intl-YKF Toronto Region of Waterloo Intl
16h 25m1 stop Calgary
C$ 565Multiple Airlines
Wed, 14 Oct - Mon, 19 Oct
Multiple Airlines Logo
8:40 p.m. - 6:45 p.m.YKF  Toronto Region of Waterloo Intl-SEA Seattle/Tacoma Intl
25h 05m1 stop Calgary
Multiple Airlines Logo
7:35 p.m. - 3:00 p.m.SEA  Seattle/Tacoma Intl-YKF Toronto Region of Waterloo Intl
16h 25m1 stop Calgary
C$ 579Multiple Airlines
Wed, 14 Oct - Mon, 19 Oct

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WestJet flights from Toronto Region of Waterloo Intl Airport to Seattle

Our best WestJet deals on Toronto Region of Waterloo Intl Airport to Seattle flight tickets
WestJet
11 Sep
YKF8:40 p.m.Toronto Region of Waterloo Intl
16h 00m
1 stop
SEA9:40 a.m.Seattle/Tacoma Intl
21 Sep
SEA7:35 p.m.Seattle/Tacoma Intl
21h 15m
1 stop
YKF7:50 p.m.Toronto Region of Waterloo Intl
C$ 471
WestJet
21 Sep
YKF8:40 p.m.Toronto Region of Waterloo Intl
25h 05m
1 stop
SEA6:45 p.m.Seattle/Tacoma Intl
28 Sep
SEA7:35 p.m.Seattle/Tacoma Intl
21h 15m
1 stop
YKF7:50 p.m.Toronto Region of Waterloo Intl
C$ 476
WestJet
16 Sep
YKF8:40 p.m.Toronto Region of Waterloo Intl
16h 00m
1 stop
SEA9:40 a.m.Seattle/Tacoma Intl
23 Sep
SEA7:35 p.m.Seattle/Tacoma Intl
21h 15m
1 stop
YKF7:50 p.m.Toronto Region of Waterloo Intl
C$ 479

momondo Fare Finder

 
Use the filters below to find and compare flights from Toronto Region of Waterloo Intl Airport to Seattle that are best for you.

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Route

Depart

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Price

Cheapest round-trip

TorontoSeattle

YKF Toronto Region of Waterloo Intl - SEA Seattle/Tacoma Intl

YKFSEA

Toronto Region of Waterloo Intl

Mon 21/9

8:40 p.m.-6:45 p.m.

1 stop25h 05m

Seattle/Tacoma Intl

Mon 28/9

7:35 p.m.-7:50 p.m.

1 stop21h 15m

C$ 476
Quickest round-trip

TorontoSeattle

YKF Toronto Region of Waterloo Intl - SEA Seattle/Tacoma Intl

YKFSEA

Toronto Region of Waterloo Intl

Wed 16/9

8:40 p.m.-9:40 a.m.

1 stop16h 00m

Seattle/Tacoma Intl

Wed 23/9

7:35 p.m.-7:50 p.m.

1 stop21h 15m

C$ 479

TorontoSeattle

YKF Toronto Region of Waterloo Intl - SEA Seattle/Tacoma Intl

YKFSEA

Toronto Region of Waterloo Intl

Thu 1/10

8:40 p.m.-6:45 p.m.

1 stop25h 05m

Seattle/Tacoma Intl

Sat 10/10

7:35 p.m.-7:50 p.m.

1 stop21h 15m

C$ 490

TorontoSeattle

YKF Toronto Region of Waterloo Intl - SEA Seattle/Tacoma Intl

YKFSEA

Toronto Region of Waterloo Intl

Fri 18/9

8:40 p.m.-6:45 p.m.

1 stop25h 05m

Seattle/Tacoma Intl

Mon 21/9

7:35 p.m.-7:50 p.m.

1 stop21h 15m

C$ 497

TorontoSeattle

YKF Toronto Region of Waterloo Intl - SEA Seattle/Tacoma Intl

YKFSEA

Toronto Region of Waterloo Intl

Wed 23/9

8:40 p.m.-9:40 a.m.

1 stop16h 00m

Seattle/Tacoma Intl

Tue 29/9

7:35 p.m.-7:50 p.m.

1 stop21h 15m

C$ 504

TorontoSeattle

YKF Toronto Region of Waterloo Intl - SEA Seattle/Tacoma Intl

YKFSEA

Toronto Region of Waterloo Intl

Wed 14/10

8:40 p.m.-6:45 p.m.

1 stop25h 05m

Seattle/Tacoma Intl

Sun 18/10

7:35 p.m.-7:50 p.m.

1 stop21h 15m

C$ 508

TorontoSeattle

YKF Toronto Region of Waterloo Intl - SEA Seattle/Tacoma Intl

YKFSEA

Toronto Region of Waterloo Intl

Mon 21/9

8:40 p.m.-6:45 p.m.

1 stop25h 05m

Seattle/Tacoma Intl

Sat 26/9

7:35 p.m.-7:50 p.m.

1 stop21h 15m

C$ 518

TorontoSeattle

YKF Toronto Region of Waterloo Intl - SEA Seattle/Tacoma Intl

YKFSEA

Toronto Region of Waterloo Intl

Mon 21/9

8:40 p.m.-6:45 p.m.

1 stop25h 05m

Seattle/Tacoma Intl

Sat 26/9

7:35 p.m.-7:50 p.m.

1 stop21h 15m

C$ 521

TorontoSeattle

YKF Toronto Region of Waterloo Intl - SEA Seattle/Tacoma Intl

YKFSEA

Toronto Region of Waterloo Intl

Wed 14/10

8:40 p.m.-6:45 p.m.

1 stop25h 05m

Seattle/Tacoma Intl

Mon 19/10

7:35 p.m.-3:00 p.m.

1 stop16h 25m

C$ 565

TorontoSeattle

YKF Toronto Region of Waterloo Intl - SEA Seattle/Tacoma Intl

YKFSEA

Toronto Region of Waterloo Intl

Wed 14/10

8:40 p.m.-6:45 p.m.

1 stop25h 05m

Seattle/Tacoma Intl

Mon 19/10

7:35 p.m.-3:00 p.m.

1 stop16h 25m

C$ 579

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to Seattle from

How to get the cheapest flight ticket from Toronto Region of Waterloo Intl Airport to Seattle

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest day to depart on your flight to Seattle?

Our data shows that Thursday is the least expensive day to fly to Seattle. Tickets to fly out on this day can be as low as C$ 532. If your travel schedule is flexible, try to avoid departing on a Monday because tickets tend to average around C$ 930. These prices are subject to change though, so be sure to set up a Price Alert for flights to Seattle.

What is the cheapest time of day to depart on your flight to Seattle?

Our most recent data shows that the best time of day to fly to Seattle is in the evening. Flights from Toronto Region of Waterloo Intl Airport to Seattle during this time can be as low as C$ 507. Flights in the morning are often more expensive with an average ticket price of C$ 1,283.

Can stopping save me money on Toronto Region of Waterloo Intl Airport to Seattle flights?

You could potentially save up to 4% on your flight if you consider stops on a Toronto Region of Waterloo Intl Airport to Seattle flight.

When to book flights from Toronto Region of Waterloo Intl Airport to Seattle

Are you open to changing your travel dates? Check out the ideal times to fly from Toronto Region of Waterloo Intl Airport to Seattle according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap Toronto Region of Waterloo Intl Airport to Seattle (YKF to SEA) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Toronto Region of Waterloo Intl Airport to Seattle

Best price found

C$ 283

Fastest flight time

9h 39m

Direct flights

None
The best one-way flight to Seattle from Toronto Region of Waterloo Intl Airport in the past 72 hours is C$ 283. The best round-trip flight deal from Toronto Region of Waterloo Intl Airport to Seattle found on momondo in the last 72 hours is C$ 476.
The fastest flight from Toronto Region of Waterloo Intl Airport to Seattle takes 9h 39m
There are no direct flights from Toronto Region of Waterloo Intl Airport to Seattle. There are no popular flight routes from Toronto Region of Waterloo Intl Airport to Seattle.
Search flight deals

Frequently asked questions about flying from Toronto Region of Waterloo Intl Airport to Seattle

  • How far is Toronto Region of Waterloo Intl to Seattle/Tacoma Intl by plane?

    A flight from Toronto Region of Waterloo Intl to Seattle/Tacoma Intl will travel around 3257.4 km. By plane, this route typically takes 9h 39m.

  • When did momondo last update prices for flights from Toronto Region of Waterloo Intl Airport to Seattle/Tacoma Intl Airport?

    Prices for flights from Toronto Region of Waterloo Intl Airport to Seattle/Tacoma Intl Airport are updated daily.

  • How old do you have to be to fly from Toronto Region of Waterloo Intl Airport to Seattle/Tacoma Intl Airport?

    The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Toronto Region of Waterloo Intl Airport to Seattle/Tacoma Intl Airport.

  • What documentation or ID do you need to fly to Seattle/Tacoma Intl Airport?

    The travel and health documents required for your trip to Seattle/Tacoma Intl Airport can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Seattle/Tacoma Intl Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

Travelling to a place near Seattle?

Book flights to Seattle if you plan to visit one of these locations
Leavenworth
Lynnwood
SeaTac
Marysville
Kirkland
Redmond
Tacoma
Tukwila
Woodinville
Puyallup
Olympia
Bainbridge Island
Ellensburg
Kent
Edmonds
Chehalis
Fife
Renton
Shoreline
Ocean Shores

Why use momondo?

Why should I use momondo to find a flight deal from Toronto to Seattle?

It is quick and easy to find Toronto to Seattle flights on momondo. We search and return numerous flight options from various airlines and agents. You can then use our filters to narrow your search until you have found the most convenient flight to Seattle that suits you.

Can I find flights from Toronto to Seattle with flexible booking policies on momondo?

Yes. All flights to Seattle from Toronto on momondo can be compared and filtered by various policies on offer, including flexible booking.

How can momondo help me find flights from Toronto to Seattle?

Once all potential Toronto to Seattle flight options are in front of you, momondo lets you sort and filter flights based on preferences such as airline, price and flight times amongst many other options.

I’m not ready to book a flight from Toronto to Seattle right now. Can momondo alert me if prices change?

If you are not ready to book a flight from Toronto to Seattle now, use our insights above to find helpful tips or alternatively set up a price alert, where momondo will track prices on flights to Seattle and let you know when they change.

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