Direct flights to Seattle | Cheapflights

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Best

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Cheapest flights to Seattle
Explore the most affordable flight options available to Seattle. Find the lowest fares based on data from user searches, with prices last updated on 14 6月 2026.

週五 20/114:45 p.m.

YYZ

-

SEA

Nonstop5h 28m

Alaska Airlines

週一 23/117:55 a.m.

SEA

-

YYZ

Nonstop4h 44m

Alaska Airlines

Deal found 12/6C$ 501

週四 15/106:45 p.m.

YYZ

-

SEA

Nonstop5h 19m

Air Canada

週四 22/108:00 a.m.

SEA

-

YYZ

Nonstop4h 50m

Air Canada

Deal found 10/6C$ 502

週一 7/126:25 p.m.

YYZ

-

SEA

Nonstop5h 29m

Air Canada

週三 9/127:45 a.m.

SEA

-

YYZ

Nonstop4h 40m

Air Canada

Deal found 13/6C$ 524

週日 25/106:25 p.m.

YYZ

-

SEA

Nonstop5h 29m

Air Canada

週四 29/107:45 a.m.

SEA

-

YYZ

Nonstop4h 40m

Air Canada

Deal found 10/6C$ 526

週五 25/96:45 p.m.

YYZ

-

SEA

Nonstop5h 19m

Air Canada

週六 3/108:00 a.m.

SEA

-

YYZ

Nonstop4h 50m

Air Canada

Deal found 10/6C$ 557

週三 23/94:55 p.m.

YYZ

-

SEA

Nonstop5h 18m

Alaska Airlines

週三 30/97:52 a.m.

SEA

-

YYZ

Nonstop4h 53m

Alaska Airlines

Deal found 9/6C$ 558

週日 18/106:45 p.m.

YYZ

-

SEA

Nonstop5h 19m

Air Canada

週日 25/107:45 a.m.

SEA

-

YYZ

Nonstop4h 40m

Air Canada

Deal found 9/6C$ 596

週四 1/104:55 p.m.

YYZ

-

SEA

Nonstop5h 18m

Alaska Airlines

週一 5/108:00 a.m.

SEA

-

YYZ

Nonstop4h 45m

Alaska Airlines

Deal found 12/6C$ 614

週五 11/94:55 p.m.

YYZ

-

SEA

Nonstop5h 18m

Alaska Airlines

週三 23/97:52 a.m.

SEA

-

YYZ

Nonstop4h 53m

Alaska Airlines

Deal found 9/6C$ 621

週五 11/96:45 p.m.

YYZ

-

SEA

Nonstop5h 19m

Air Canada

週一 21/98:00 a.m.

SEA

-

YYZ

Nonstop4h 50m

Air Canada

Deal found 11/6C$ 638

週日 20/96:45 p.m.

YYZ

-

SEA

Nonstop5h 19m

Air Canada

週二 29/98:00 a.m.

SEA

-

YYZ

Nonstop4h 50m

Air Canada

Deal found 9/6C$ 639

Best time to book a flight to Seattle

Have a flexible travel schedule? Discover the best time to fly to Seattle with our price prediction graph.

YTO-SEA

YYZ-SEA

Estimated round-trip price

Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Fly from

Route

Depart

Return

Price

Cheapest round-trip

TorontoSeattle

YYZ - SEA

YYZSEA

Toronto Pearson Intl

週四 1/10

4:55 p.m.-7:13 p.m.

Nonstop5h 18m

Seattle/Tacoma Intl

週一 5/10

8:00 a.m.-3:45 p.m.

Nonstop4h 45m

C$ 614

TorontoSeattle

YYZ - SEA

YYZSEA

Toronto Pearson Intl

週四 10/9

4:55 p.m.-7:13 p.m.

Nonstop5h 18m

Seattle/Tacoma Intl

週四 17/9

7:52 a.m.-3:45 p.m.

Nonstop4h 53m

C$ 677

TorontoSeattle

YYZ - SEA

YYZSEA

Toronto Pearson Intl

週日 13/9

4:55 p.m.-7:13 p.m.

Nonstop5h 18m

Seattle/Tacoma Intl

週日 20/9

7:52 a.m.-3:45 p.m.

Nonstop4h 53m

C$ 740

TorontoSeattle

YYZ - SEA

YYZSEA

Toronto Pearson Intl

週六 11/7

6:45 p.m.-9:07 p.m.

Nonstop5h 22m

Seattle/Tacoma Intl

週二 14/7

8:00 a.m.-3:45 p.m.

Nonstop4h 45m

C$ 1,080

TorontoSeattle

YYZ - SEA

YYZSEA

Toronto Pearson Intl

週二 11/8

6:45 p.m.-9:07 p.m.

Nonstop5h 22m

Seattle/Tacoma Intl

週日 16/8

8:00 a.m.-3:45 p.m.

Nonstop4h 45m

C$ 1,084

TorontoSeattle

YYZ - SEA

YYZSEA

Toronto Pearson Intl

週三 22/7

4:55 p.m.-7:25 p.m.

Nonstop5h 30m

Seattle/Tacoma Intl

週日 26/7

8:00 a.m.-3:45 p.m.

Nonstop4h 45m

C$ 1,097

Quickest round-trip

TorontoSeattle

YYZ - SEA

YYZSEA

Toronto Pearson Intl

週二 11/8

6:45 p.m.-9:07 p.m.

Nonstop5h 22m

Seattle/Tacoma Intl

週一 17/8

8:00 a.m.-3:39 p.m.

Nonstop4h 39m

C$ 1,123

TorontoSeattle

YYZ - SEA

YYZSEA

Toronto Pearson Intl

週三 9/9

6:45 p.m.-9:04 p.m.

Nonstop5h 19m

Seattle/Tacoma Intl

週六 19/9

8:00 a.m.-3:50 p.m.

Nonstop4h 50m

C$ 1,158

TorontoSeattle

YYZ - SEA

YYZSEA

Toronto Pearson Intl

週二 21/7

4:55 p.m.-7:25 p.m.

Nonstop5h 30m

Seattle/Tacoma Intl

週日 26/7

8:00 a.m.-3:45 p.m.

Nonstop4h 45m

C$ 1,165

TorontoSeattle

YYZ - SEA

YYZSEA

Toronto Pearson Intl

週二 7/7

6:45 p.m.-9:07 p.m.

Nonstop5h 22m

Seattle/Tacoma Intl

週二 14/7

8:00 a.m.-3:45 p.m.

Nonstop4h 45m

C$ 1,169

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/6

Showing 1-10 of 21 resultsSorted by cheapest first

1

2

3

Reviews of airlines flying non-stop to Seattle

Check out reviews from past customers who have flown Alaska Airlines,Delta, andUnited Airlines to the United States to help guide your decision. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.

Alaska Airlines

7.9

Good

Reviews

1 / 20

10.0

Excellent

Anonymous,Jun 2026

LHR - SEA

It's my first time flying with Alaska Airlines. All in all it was very good. Excellent crew and the meal was really good .. best mashed potato!! Black point: not waking me up for breakfast. Having departed late from London and arriving in Seattle late at night, it would have been nice to have found a meal on the table when i woke up. Although the crew was very lovely, kind and helpful, I did find it a little regimented in their approach. Also the constant interruptions announcing what we were eating next and unnecessary announcements.

Alaska Airlines

7.9

Good

Alaska Airlines

7.9

Good

Reviews

1 / 20

10.0

Excellent

Anonymous,Jun 2026

LHR - SEA

It's my first time flying with Alaska Airlines. All in all it was very good. Excellent crew and the meal was really good .. best mashed potato!! Black point: not waking me up for breakfast. Having departed late from London and arriving in Seattle late at night, it would have been nice to have found a meal on the table when i woke up. Although the crew was very lovely, kind and helpful, I did find it a little regimented in their approach. Also the constant interruptions announcing what we were eating next and unnecessary announcements.

7.9

Good

Alaska Airlines

7.9

Good

Reviews

1 / 20

10.0

Excellent

Anonymous,Jun 2026

LHR - SEA

It's my first time flying with Alaska Airlines. All in all it was very good. Excellent crew and the meal was really good .. best mashed potato!! Black point: not waking me up for breakfast. Having departed late from London and arriving in Seattle late at night, it would have been nice to have found a meal on the table when i woke up. Although the crew was very lovely, kind and helpful, I did find it a little regimented in their approach. Also the constant interruptions announcing what we were eating next and unnecessary announcements.

United Airlines

7.4

Good

Alaska Airlines

7.9

Good

Reviews

1 / 20

10.0

Excellent

Anonymous,Jun 2026

LHR - SEA

It's my first time flying with Alaska Airlines. All in all it was very good. Excellent crew and the meal was really good .. best mashed potato!! Black point: not waking me up for breakfast. Having departed late from London and arriving in Seattle late at night, it would have been nice to have found a meal on the table when i woke up. Although the crew was very lovely, kind and helpful, I did find it a little regimented in their approach. Also the constant interruptions announcing what we were eating next and unnecessary announcements.

7.2

Good

Alaska Airlines

7.9

Good

Reviews

1 / 20

10.0

Excellent

Anonymous,Jun 2026

LHR - SEA

It's my first time flying with Alaska Airlines. All in all it was very good. Excellent crew and the meal was really good .. best mashed potato!! Black point: not waking me up for breakfast. Having departed late from London and arriving in Seattle late at night, it would have been nice to have found a meal on the table when i woke up. Although the crew was very lovely, kind and helpful, I did find it a little regimented in their approach. Also the constant interruptions announcing what we were eating next and unnecessary announcements.

7.1

Good

Alaska Airlines

7.9

Good

Reviews

1 / 20

10.0

Excellent

Anonymous,Jun 2026

LHR - SEA

It's my first time flying with Alaska Airlines. All in all it was very good. Excellent crew and the meal was really good .. best mashed potato!! Black point: not waking me up for breakfast. Having departed late from London and arriving in Seattle late at night, it would have been nice to have found a meal on the table when i woke up. Although the crew was very lovely, kind and helpful, I did find it a little regimented in their approach. Also the constant interruptions announcing what we were eating next and unnecessary announcements.

FAQ about direct flights to Seattle

How much are direct flights to Seattle?
On average, a one-way direct flight to Seattle will cost users approximately C$ 427. If you're looking for a direct round-trip flight to Seattle, you can expect to pay around C$ 1,151.
Which airlines fly direct to Seattle?
At the moment, Alaska Airlines, Air Canada, WestJet, United Airlines, Harbour Air Seaplanes offer direct flights to Seattle. Alaska Airlines is currently the most popular airline that flies direct to Seattle.
How long is a direct flight to Seattle?
While the flight duration depends heavily on the origin, travellers can expect non-stop flights to Seattle to last approximately 1h 42m on average. The quickest direct flight to Seattle at this time departs from Vancouver Intl Airport (0h 12m), while the longest leaves from Toronto Pearson Intl Airport (5h 19m).
What is the best time of year to fly direct to Seattle?
If you're seeking the lowest price on a direct flight to Seattle, November is worth consideration, as prices are usually at their lowest, on average. January may be most appealing to users looking for the quietest time to visit Seattle, when demand is typically at its lowest.
What is the most popular direct flight origin to Seattle?
Currently, the most popular direct flight origin to Seattle is Calgary. A round-trip direct flight from Calgary to Seattle typically costs around C$ 1,369.

See more FAQs

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