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

KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Ontario to Seattle. Visit our flight page for the latest deals!>/a>

How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Ontario to Seattle?

KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Seattle from Ontario is likely to change within 7 days, so travelers know whether to wait or book now. Visit our flight page for the latest deals!>/a>

What is the Hacker Fare option on flights from Ontario to Seattle?

Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Seattle with an airline and back to Ontario with another airline. Visit our flight page for the latest deals!>/a>

What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Ontario to Seattle?

Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Seattle from Ontario up to 3 days before/after your preferred dates. You can then pick the flights that suit you best. Visit our flight page for the latest deals!>/a>

C$ 194 CHEAP FLIGHTS from Ontario to Seattle

SEA

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Flight Deals

Cheap Flights from Ontario to Seattle

Discover the best prices for you by selecting your travel dates on KAYAK.

Round-trip

One-way

Last minute

Direct

Recent round-trip flight deals from Ontario to Seattle

Thu, 30 Apr - Thu, 7 May

7:30 p.m. - 9:53 p.m.

YYZ

SEA

5h 23mdirect

7:20 p.m. - 8:10 a.m.

SEA

YYZ

9h 50m

2 stops

C$ 303Air Canada

Thu, 30 Apr - Thu, 7 May

7:30 p.m. - 9:53 p.m.

YYZ

SEA

5h 23mdirect

7:20 p.m. - 10:10 a.m.

SEA

YYZ

11h 50m

2 stops

C$ 312Air Canada

Wed, 29 Apr - Wed, 6 May

8:00 a.m. - 7:20 p.m.

YYZ

SEA

14h 20m

1 stop

2:55 p.m. - 1:38 a.m.

SEA

YYZ

7h 43m

1 stop

C$ 329Air Canada

Wed, 22 Apr - Thu, 23 Apr

8:15 a.m. - 3:05 p.m.

YYZ

SEA

9h 50m

2 stops

3:45 p.m. - 5:29 a.m.

SEA

YYZ

10h 44m

2 stops

C$ 340Air Canada

Sat, 9 May - Tue, 19 May

8:00 a.m. - 6:30 p.m.

YYZ

SEA

13h 30m

2 stops

7:20 p.m. - 8:10 a.m.

SEA

YYZ

9h 50m

2 stops

C$ 342Air Canada

Wed, 29 Apr - Wed, 6 May

8:15 a.m. - 7:20 p.m.

YYZ

SEA

14h 05m

2 stops

2:55 p.m. - 1:38 a.m.

SEA

YYZ

7h 43m

1 stop

C$ 344Air Canada

Sat, 25 Apr - Fri, 1 May

7:30 a.m. - 2:31 p.m.

YUL

SEA

10h 01m

1 stop

7:35 p.m. - 7:05 a.m.

SEA

YUL

8h 30m

1 stop

C$ 385WestJet

Sat, 25 Apr - Fri, 1 May

7:30 a.m. - 2:31 p.m.

YUL

SEA

10h 01m

1 stop

10:30 a.m. - 12:25 a.m.

SEA

YUL

10h 55m

2 stops

C$ 393WestJet

Mon, 27 Apr - Mon, 4 May

1:20 p.m. - 6:45 p.m.

YOW

SEA

8h 25m

1 stop

7:35 p.m. - 5:35 a.m.

SEA

YOW

7h 00m

1 stop

C$ 398WestJet

Mon, 24 Aug - Wed, 2 Sep

10:40 a.m. - 10:46 p.m.

YAM

SEA

15h 06m

2 stops

11:41 p.m. - 5:10 p.m.

SEA

YAM

14h 29m

2 stops

C$ 1,575Multiple Airlines

Useful Info

Low season	January
High season	August
Cheapest flight	C$ 194

Best time to beat the crowds (8% less expensive on average)

Flight from Toronto Pearson Airport to Seattle

How does KAYAK find such low prices on flights from Ontario to Seattle?
KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Ontario to Seattle.
How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Ontario to Seattle?
KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Seattle from Ontario is likely to change within 7 days, so travelers know whether to wait or book now.
What is the Hacker Fare option on flights from Ontario to Seattle?
Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Seattle with an airline and back to Ontario with another airline.
What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Ontario to Seattle?
Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Seattle from Ontario up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

SeaTac

Lynnwood

Tacoma

Centralia

Marysville

Redmond

Tukwila

Renton

Kent

Bothell

Olympia

Kirkland

Ocean Shores

Puyallup

Ellensburg

Ashford

Federal Way

Lacey

Monroe

Fife

Everything you need to know for your flight to Seattle

Airports

Cabin class

Complete your trip

Direct Flights

Flights to other cities

Origins

Other airports

Return flight deals

Information on the airport you'll fly into in Seattle

Seattle (SEA)

SEA

C$ 194 Find Cheap Flights from Ontario to Seattle

KAYAK searches hundreds of travel sites at once for deals on flights to Seattle

Cheap Flights from Ontario to Seattle

Recent round-trip flight deals from Ontario to Seattle

Recent one-way flight deals from Ontario to Seattle

Recent last minute flight deals from Ontario to Seattle

Recent direct flight deals from Ontario to Seattle

Good to know

FAQs for booking flights from Ontario to Seattle

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

KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Ontario to Seattle.

How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Ontario to Seattle?

KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Seattle from Ontario is likely to change within 7 days, so travelers know whether to wait or book now.

What is the Hacker Fare option on flights from Ontario to Seattle?

Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Seattle with an airline and back to Ontario with another airline.

What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Ontario to Seattle?

Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Seattle from Ontario up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Travelling to a place near Seattle?

Everything you need to know for your flight to Seattle

Information on the airport you'll fly into in Seattle

Cabin class types available on flights to Ontario

Complete your trip to Seattle with a hotel stay or car rental

Find direct flights for Seattle

Flights to other popular destinations

Flights from domestic origins to Seattle

Choose which airport to fly into in Seattle

Find deals for your return flight