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C$ 282+ Cheap flights to Seattle

— SEA
22 Oct — 29 Oct1
1 adult
1 adult, Economy, 0 bags

Flights to Seattle in 2026

Enter your travel dates to find the best prices.

Cheapest flights to Seattle

Fri 16/1010:55 p.m. -
2 stops13h 45m
Fri 23/107:35 p.m. -
1 stop7h 10m
Deal found 22/9C$ 471
Fri 23/106:35 p.m. -
2 stops27h 10m
Wed 28/103:30 p.m. -
2 stops17h 00m
Deal found 22/9C$ 485
Thu 22/101:30 p.m. -
1 stop8h 15m
Fri 23/107:35 p.m. -
1 stop8h 20m
Deal found 20/9C$ 488
Wed 21/101:30 p.m. -
1 stop8h 15m
Fri 23/1010:30 a.m. -
1 stop7h 45m
Deal found 21/9C$ 489
Sun 22/113:25 p.m. -
1 stop25h 15m
Sat 28/112:20 p.m. -
1 stop21h 05m
Deal found 21/9C$ 491
Tue 20/1010:55 p.m. -
2 stops13h 45m
Fri 23/1010:30 a.m. -
1 stop7h 45m
Deal found 22/9C$ 492
Wed 21/1012:40 p.m. -
2 stops9h 05m
Wed 28/103:30 p.m. -
2 stops12h 15m
Deal found 19/9C$ 493
Thu 26/117:30 a.m. -
1 stop9h 10m
Sun 29/112:30 p.m. -
1 stop11h 30m
Deal found 21/9C$ 496
Sat 17/1012:40 p.m. -
2 stops9h 05m
Tue 20/107:35 p.m. -
1 stop7h 10m
Deal found 17/9C$ 498
Sun 22/1110:45 p.m. -
2 stops17h 55m
Sat 28/112:20 p.m. -
2 stops18h 10m
Deal found 21/9C$ 499
Sat 24/1012:00 p.m. -
1 stop9h 45m
Sat 31/103:20 p.m. -
2 stops12h 25m
Deal found 19/9C$ 500
Thu 19/113:25 p.m. -
1 stop25h 15m
Wed 25/112:30 p.m. -
1 stop20h 55m
Deal found 19/9C$ 519

Find flight deals to Seattle

Round-trip from

C$ 471

One-way from

C$ 282

Popular in

June

Cheapest in

February

Average price

C$ 570

Good round-trip deal

C$ 644 or less

Good one-way deal

C$ 421 or less
WestJet
  • WestJet
  • 16/10-23/10
  • 3 total stops
  • 20h 55m total
  • Toronto to Seattle
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WestJet
  • WestJet
  • 22/11-31/12
  • 1 total stop
  • 25h 15m total
  • Toronto to Seattle
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Highest demand for flights based on searches. 10% potential increase in price (C$ 65 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease (C$ 13 potential savings vs. average RT price).
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Average for round-trip flights in September 2026
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Price to beat on a round-trip flight from Toronto to Seattle/Tacoma Intl.
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Price to beat on a one-way flight from Toronto to Seattle/Tacoma Intl.
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Cheapflights Fare Finder

 
Use the filters below to find and compare flights to Seattle that are best for you.

Fly from

Route

Depart

Return

Price

Cheapest round-trip

HamiltonSeattle

YHM Hamilton - SEA Seattle/Tacoma Intl

YHMSEA

Hamilton

Sun 22/11

3:25 p.m.-1:40 p.m.

1 stop25h 15m

Seattle/Tacoma Intl

Wed 31/12

12:00 a.m.-3:00 a.m.

Nonstop0h 00m

C$ 282

TorontoSeattle

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

YKFSEA

Toronto Region of Waterloo Intl

Fri 23/10

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

1 stop25h 05m

Seattle/Tacoma Intl

Wed 31/12

12:00 a.m.-3:00 a.m.

Nonstop0h 00m

C$ 317

HamiltonSeattle

YHM Hamilton - SEA Seattle/Tacoma Intl

YHMSEA

Hamilton

Thu 4/2

3:25 p.m.-1:40 p.m.

1 stop25h 15m

Seattle/Tacoma Intl

Wed 31/12

12:00 a.m.-3:00 a.m.

Nonstop0h 00m

C$ 318

TorontoSeattle

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

YKFSEA

Toronto Region of Waterloo Intl

Sun 11/10

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

1 stop16h 00m

Seattle/Tacoma Intl

Wed 31/12

12:00 a.m.-3:00 a.m.

Nonstop0h 00m

C$ 325

TorontoSeattle

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

YKFSEA

Toronto Region of Waterloo Intl

Mon 12/10

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

1 stop25h 05m

Seattle/Tacoma Intl

Wed 31/12

12:00 a.m.-3:00 a.m.

Nonstop0h 00m

C$ 331

TorontoSeattle

YYZ Toronto Pearson Intl - SEA Seattle/Tacoma Intl

YYZSEA

Toronto Pearson Intl

Wed 11/11

6:15 a.m.-4:43 p.m.

1 stop13h 28m

Seattle/Tacoma Intl

Wed 31/12

12:00 a.m.-3:00 a.m.

Nonstop0h 00m

C$ 335

TorontoSeattle

YYZ Toronto Pearson Intl - SEA Seattle/Tacoma Intl

YYZSEA

Toronto Pearson Intl

Wed 4/11

6:00 a.m.-10:40 a.m.

1 stop7h 40m

Seattle/Tacoma Intl

Wed 31/12

12:00 a.m.-3:00 a.m.

Nonstop0h 00m

C$ 335

TorontoSeattle

YYZ Toronto Pearson Intl - SEA Seattle/Tacoma Intl

YYZSEA

Toronto Pearson Intl

Sat 10/10

8:00 a.m.-9:40 a.m.

2 stops28h 40m

Seattle/Tacoma Intl

Wed 31/12

12:00 a.m.-3:00 a.m.

Nonstop0h 00m

C$ 350

TorontoSeattle

YYZ Toronto Pearson Intl - SEA Seattle/Tacoma Intl

YYZSEA

Toronto Pearson Intl

Fri 6/11

9:40 a.m.-6:35 p.m.

1 stop11h 55m

Seattle/Tacoma Intl

Wed 31/12

12:00 a.m.-3:00 a.m.

Nonstop0h 00m

C$ 355

HamiltonSeattle

YHM Hamilton - SEA Seattle/Tacoma Intl

YHMSEA

Hamilton

Sat 14/11

7:05 a.m.-2:44 p.m.

1 stop10h 39m

Seattle/Tacoma Intl

Wed 31/12

12:00 a.m.-3:00 a.m.

Nonstop0h 00m

C$ 357

Flights are sorted by cheapest round-trip flights first.

Deals found on 18/9

Showing 1-10 of 55 resultsSorted by cheapest first
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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.
Estimated round-trip price

Cheapflights Insights

Everything you need to know about your flight to Seattle

How long is the flight to Seattle?

On average, a flight from Toronto to Seattle takes 9 hours 35 minutes. Flights to Seattle from other popular cities in Canada will vary in length. Below are a few examples of popular routes and their flight times.

Weekly flight availability to Seattle

The most flights from Toronto to Seattle are scheduled on a Monday (4 on average). You will have fewer flight options on Wednesday, which is when the least amount of flights are scheduled (1 on average).

What are the most popular airlines that fly to Seattle?

The most popular airlines flying from Toronto to Seattle are Alaska Airlines, Air Canada and WestJet.

WestJet
WestJet
From C$ 159
Air Canada
Air Canada
From C$ 124
Alaska Airlines
Alaska Airlines
From C$ 190
United Airlines
United Airlines
From C$ 255

What are the cheapest airlines that fly to Seattle?

The cheapest airlines flying from Toronto to Seattle are Delta, Alaska Airlines and WestJet.

Rainfall in Seattle by month

In terms of precipitation, rainfall in Seattle ranges from 18.0 - 168.0 mm per month. November is typically the wettest month, when rainfall can reach 168.0 mm. July is typically the driest time to visit Seattle when rainfall is around 18.0 mm.

Temperature in Seattle by month

If weather is an important factor for your trip to Seattle, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 19.0 C. Travellers hoping to avoid the cold should look outside of December, when temperatures are typically at their lowest (around 5.0 C).

When is the best time to book a flight to Seattle?

The best time to book flights to Seattle is 85 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.

Reviews of airlines servicing 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
12,953 reviews
Check prices

Crew

8.5

Food

7.0

Overall

7.9

Boarding

8.1

Entertainment

7.0

Comfort

7.8

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
12,953 reviews
Alaska Airlines
7.9
Good
12,953 reviews
Check prices

Crew

8.5

Food

7.0

Overall

7.9

Boarding

8.1

Entertainment

7.0

Comfort

7.8

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.
Delta
7.8
Good
8,597 reviews
Alaska Airlines
7.9
Good
12,953 reviews
Check prices

Crew

8.5

Food

7.0

Overall

7.9

Boarding

8.1

Entertainment

7.0

Comfort

7.8

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
10,224 reviews
Alaska Airlines
7.9
Good
12,953 reviews
Check prices

Crew

8.5

Food

7.0

Overall

7.9

Boarding

8.1

Entertainment

7.0

Comfort

7.8

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.
WestJet
7.2
Good
3,446 reviews
Alaska Airlines
7.9
Good
12,953 reviews
Check prices

Crew

8.5

Food

7.0

Overall

7.9

Boarding

8.1

Entertainment

7.0

Comfort

7.8

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.
Air Canada
7.1
Good
11,661 reviews
Alaska Airlines
7.9
Good
12,953 reviews
Check prices

Crew

8.5

Food

7.0

Overall

7.9

Boarding

8.1

Entertainment

7.0

Comfort

7.8

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.

FAQs about flying to Seattle

Getting around Seattle

The Metro Transit system of buses, including electric and hybrid buses, is useful and tourist-friendly, though drivers do not carry change. Express routes are offered by some buses. Other options include the streetcar and the monorail, connecting with major attractions. The Washington State Ferries are a tourist attraction in their own right.

Seattle is generally safe, though common sense should be applied at all times and it can be best to avoid parks at night.

Seattle airport overview

Seattle-Tacoma International Airport (SEA), also affectionately known as Sea-Tac Airport, is located in the southern King County of Washington, 12 miles (19km) south of Seattle. Serving more than 31.5 million passengers in 2010, it is the United States’ 18th busiest airport.

Sea-Tac Airport has a Main (central) Terminal and ticketing arena surrounded by concourses A-D, as well as a two satellite terminals called the North and South Satellites. An automatic people-mover transports passengers between the satellite terminals and the Main Terminal. Running alongside the ticketing concourse is the airport garage, which houses five parking areas and a ground transportation centre. All gates may be accessed once past security.

With an extensive selection of art on display throughout the airport, in addition to a host of shops, restaurants, bars, bistros and fast-food outlets, Sea-Tac is both attractive and inviting. Moreover, its combination of efficient facilities and helpful staff make pesky tasks such as checking-in a breeze.

Flights to Seattle-Tacoma International Airport comes from a number of cities worldwide, including Toronto, Paris, Atlanta, Los Angeles, Chicago, Seoul, London, Frankfurt, Amsterdam, Tokyo, New York, Honolulu and Beijing.

  • When is the best time to fly to Seattle?

    Peak Season: Although it rains a lot in Seattle there is significantly less during the months from April to October. As the summer weather (June – mid September) is also mild, this half of the year is the most pleasant time to visit. The summer season is the most popular time and is when most people book flights to Seattle. Hotel rates and airfare tickets tend to be more expensive from around mid-May to mid-September. Travellers can experience long days as during June and July it stays light until 10pm. You may still need to pack an umbrella as there are occasional summer showers, although, you’ll find plenty to keep you occupied indoors, such as, going to see something in the theatres and performance halls. Summer is also when the big, primarily outdoor, festivals are held. Off Season: The rainy season goes from October to April, which is when fewer people tend to visit the city, compared with the drier peak season. This is a good time to look for flights to Seattle and accommodation, as you may be able to find a good deal. If you visit during October, why not attend the annual Fremont Oktoberfest? This event features the biggest beer garden in the Northwest with over 100 mircobrews and craft beers on offer to taste and enjoy. There is also a variety of attractions for all the family, such as, the Oktoberfest 5k beer run, live Seattle Bands and a children’s activity area. The most pleasant weather during the off-season occurs in early May and late September. So why not book during these months to make the most of cheap flights to Seattle.

  • What airport do you fly into for flights to Seattle?

    Travellers will need to book flights to Seattle/Tacoma Intl (SEA) if they wish to fly to Seattle. The Seattle airport is 18.4 km from the city centre. 5 airlines have flights to Seattle/Tacoma Intl from Toronto on a daily basis. Booking flights to Seattle/Tacoma Intl should not be difficult; the airport handles an average of 2 flights from Toronto per day.

  • Can I find cheaper flights to Seattle if I am willing to have layovers?

    Yes, flights with layovers are often cheaper than direct flights. Keep an eye out for flight deals to Seattle on Cheapflights that require 1 or 2 stops for potential cost savings.

  • What is the best airline to fly to Seattle?

    Based on reviews from Cheapflights users, Air Canada is rated the highest out of the airlines that fly to Seattle.

  • What is the cheapest airport to fly to in Seattle?

    Seattle/Tacoma Intl is currently the cheapest airport to fly to in Seattle. One-way flights to Seattle/Tacoma Intl typically cost C$ 82, while round-trip flights cost around C$ 196.

  • How much is a round-trip flight to Seattle?

    A round-trip flight to Seattle will typically cost around C$ 273, however they can be found for as little as C$ 196.

  • Where does the fastest flight to Seattle depart from?

    For those looking to save time traveling to Seattle, Vancouver offers the quickest one-way flight (0 hours 7 minutes).

  • Does Seattle/Tacoma Intl have rental cars?

    Yes. Those touching down at Seattle/Tacoma Intl can take advantage of the rental car services offered upon their arrival.

  • Are there hotels close to Seattle/Tacoma Intl?

    Yes. Seattle/Tacoma Intl has hotels nearby for those requiring accommodations. Serene 3-bedroom house perfect for relaxing stays in SeaTac, Burien, Seattle is the closest property to Seattle/Tacoma Intl (0.0 km away from Seattle/Tacoma Intl).

See more FAQs

Travelling to a place near Seattle?

Book flights to Seattle if you plan to visit one of these locations
SeaTac
Kent
Mukilteo
Leavenworth
Renton
Lynnwood
Cashmere
Ellensburg
Tukwila
Tacoma
Marysville
Federal Way
Kirkland

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