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C$ 162+ Cheap flights to Seattle

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 3/5. Fares are subject to change and may not be available on all flights or dates of travel.
— SEA
8 Apr — 15 Apr1
1 adult

Flights to Seattle in 2025

Find the latest flights to Seattle in 2025, with up-to-date prices and availability. In the last 7 days, Cheapflights users made a total of 629,999 searches and data was last updated on 3 April 2025.

Round-trip from

C$ 285

One-way from

C$ 162

Popular in

May

Cheapest in

February

Average price

C$ 604

Good round-trip deal

C$ 511 or less

Good one-way deal

C$ 318 or less
WestJet
  • WestJet
  • 29/6-8/7
  • 2 total stops
  • 17h 34m total
  • Toronto to Seattle
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WestJet
  • WestJet
  • 3/5
  • 1 total stop
  • 9h 58m total
  • Toronto to Seattle
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Highest demand for flights based on searches. 13% potential increase in price (C$ 120 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease (C$ 17 potential savings vs. average RT price).
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Average for round-trip flights in April 2025
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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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Find flight deals to Seattle

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 3 April 2025.

Fri 1/86:00 a.m.YHM - SEA
1 stop9h 58mWestJet
Thu 7/81:50 p.m.SEA - YHM
1 stop7h 51mWestJet
Deal found 2/4C$ 288
Mon 21/76:00 a.m.YKF - SEA
1 stop15h 38mWestJet
Sat 26/71:50 p.m.SEA - YKF
1 stop7h 56mWestJet
Deal found 1/4C$ 349
Tue 29/48:00 a.m.YYZ - SEA
1 stop7h 58mWestJet
Tue 6/52:05 p.m.SEA - YYZ
1 stop7h 19mWestJet
Deal found 1/4C$ 349
Wed 30/47:25 p.m.YYZ - SEA
1 stop27h 26mMultiple Airlines
Wed 7/56:00 a.m.SEA - YYZ
3 stops20h 51mMultiple Airlines
Deal found 1/4C$ 355
Tue 10/65:50 p.m.YYZ - SEA
1 stop9h 15mDelta
Tue 17/65:55 a.m.SEA - YYZ
1 stop8h 20mDelta
Deal found 1/4C$ 392
Wed 30/46:00 a.m.YKF - SEA
1 stop9h 58mMultiple Airlines
Wed 7/53:39 p.m.SEA - YKF
2 stops10h 36mMultiple Airlines
Deal found 1/4C$ 399
Wed 9/44:45 p.m.YYZ - SEA
Nonstop5h 20mAlaska Airlines
Wed 16/47:20 a.m.SEA - YYZ
Nonstop4h 40mAlaska Airlines
Deal found 2/4C$ 415
Wed 21/512:25 p.m.YTZ - SEA
1 stop10h 12mAir Canada
Tue 27/57:20 a.m.SEA - YTZ
1 stop9h 30mAir Canada
Deal found 1/4C$ 421
Sat 3/56:00 a.m.YHM - SEA
1 stop9h 58mMultiple Airlines
Wed 7/56:00 a.m.SEA - YHM
2 stops15h 41mMultiple Airlines
Deal found 1/4C$ 422
Wed 30/47:20 p.m.YYZ - SEA
Nonstop5h 21mAir Canada
Wed 7/510:00 a.m.SEA - YYZ
1 stop7h 32mAir Canada
Deal found 1/4C$ 425
Thu 28/88:50 a.m.YYZ - SEA
Nonstop5h 20mUnited Airlines
Tue 2/912:20 p.m.SEA - YYZ
Nonstop4h 44mUnited Airlines
Deal found 2/4C$ 426
Tue 8/46:00 a.m.YYZ - SEA
1 stop9h 33mAmerican Airlines
Wed 9/412:59 a.m.SEA - YYZ
1 stop8h 41mAmerican Airlines
Deal found 1/4C$ 451

Cheapflights Fare Finder

Locate flights to Seattle that fit your budget, with regularly updated fares and availability. In the last 7 days, Cheapflights users made a total of 629,999 searches and data was last updated on 3 April 2025.
Use the filters below to find and compare flights to Seattle that are best for you.

Fly from

Toronto

Route

Depart

Return

Price

HamiltonSeattle

YHM - SEA

YHMSEA

Hamilton

Fri 1/8

6:00 a.m.-12:58 p.m.

1 stop9h 58m

Seattle/Tacoma Intl

Thu 7/8

1:50 p.m.-12:41 a.m.

1 stop7h 51m

C$ 288

TorontoSeattle

YKF - SEA

YKFSEA

Toronto Region of Waterloo Intl

Wed 30/7

6:00 a.m.-6:38 p.m.

1 stop15h 38m

Seattle/Tacoma Intl

Thu 31/7

1:50 p.m.-12:46 a.m.

1 stop7h 56m

C$ 349

TorontoSeattle

YYZ - SEA

YYZSEA

Toronto Pearson Intl

Tue 29/4

8:00 a.m.-12:58 p.m.

1 stop7h 58m

Seattle/Tacoma Intl

Tue 6/5

2:05 p.m.-12:24 a.m.

1 stop7h 19m

C$ 349

TorontoSeattle

YYZ - SEA

YYZSEA

Toronto Pearson Intl

Wed 30/4

7:25 p.m.-7:51 p.m.

1 stop27h 26m

Seattle/Tacoma Intl

Wed 7/5

6:00 a.m.-5:51 a.m.

3 stops20h 51m

C$ 355

TorontoSeattle

YYZ - SEA

YYZSEA

Toronto Pearson Intl

Tue 10/6

5:50 p.m.-12:05 a.m.

1 stop9h 15m

Seattle/Tacoma Intl

Tue 17/6

5:55 a.m.-5:15 p.m.

1 stop8h 20m

C$ 392

TorontoSeattle

YKF - SEA

YKFSEA

Toronto Region of Waterloo Intl

Wed 30/4

6:00 a.m.-12:58 p.m.

1 stop9h 58m

Seattle/Tacoma Intl

Wed 7/5

3:39 p.m.-5:15 a.m.

2 stops10h 36m

C$ 399

TorontoSeattle

YYZ - SEA

YYZSEA

Toronto Pearson Intl

Sat 12/4

4:45 p.m.-7:05 p.m.

Nonstop5h 20m

Seattle/Tacoma Intl

Thu 17/4

7:20 a.m.-3:00 p.m.

Nonstop4h 40m

C$ 415

TorontoSeattle

YTZ - SEA

YTZSEA

Toronto Island

Wed 21/5

12:25 p.m.-7:37 p.m.

1 stop10h 12m

Seattle/Tacoma Intl

Tue 27/5

7:20 a.m.-7:50 p.m.

1 stop9h 30m

C$ 419

HamiltonSeattle

YHM - SEA

YHMSEA

Hamilton

Sat 3/5

6:00 a.m.-12:58 p.m.

1 stop9h 58m

Seattle/Tacoma Intl

Wed 7/5

6:00 a.m.-12:41 a.m.

2 stops15h 41m

C$ 422

TorontoSeattle

YYZ - SEA

YYZSEA

Toronto Pearson Intl

Wed 21/5

8:25 a.m.-10:45 a.m.

Nonstop5h 20m

Seattle/Tacoma Intl

Tue 27/5

2:55 p.m.-1:09 a.m.

1 stop7h 14m

C$ 423

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/4

Showing 1-10 of 29 results
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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
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.

Cheapflights Insights

Everything you need to know about your flight to Seattle

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

Use this chart to determine the optimal time to book a round-trip flight from Toronto to Seattle. Price data was last updated on 28 March 2025.

The best time to book flights to Seattle is 52 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.

How long is the flight to Seattle?

On average, a flight from Toronto to Seattle takes 8 hours 20 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.

When is the cheapest time to fly to Seattle?

Use this chart to determine the cheapest time to fly round-trip from Toronto to Seattle. Price data was last updated on 16 December 2024.

Users looking for the lowest fares to Seattle should consider flying on Thursday mornings, when prices are typically cheapest. Budget-minded travellers will want to avoid Monday mornings, when prices are usually at their highest.

Weekly flight availability to Seattle

The most flights from Toronto to Seattle are scheduled on a Wednesday (6 on average). You will have fewer flight options on Thursday, which is when the least amount of flights are scheduled (2 on average).

What are the most popular airlines that fly to Seattle?

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

Air Canada

Air Canada

From C$ 263

Alaska Airlines

Alaska Airlines

From C$ 239

WestJet

WestJet

From C$ 214

United Airlines

United Airlines

From C$ 263

What are the cheapest airlines that fly to Seattle?

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

Rainfall in Seattle by month

Plan your trip to Seattle by taking into account the average rainfall totals 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

Plan your trip to Seattle by taking into account the average temperature totals 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).

Reviews of airlines servicing Seattle

Get insights into the airlines that provide service to Seattle. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Seattle. Reviews last updated 3 April 2025.
Get a feel of what it's like to fly with Alaska Airlines, Delta and Hawaiian Airlines to Seattle by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Alaska Airlines
8.0
Very good
9,825 reviews
Check prices

Food

7.1

Boarding

8.2

Overall

8.0

Entertainment

7.1

Crew

8.5

Comfort

7.9

Reviews

1 / 20
10.0
Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them
Alaska Airlines
8.0
Very good
9,825 reviews
Alaska Airlines
8.0
Very good
9,825 reviews
Check prices

Food

7.1

Boarding

8.2

Overall

8.0

Entertainment

7.1

Crew

8.5

Comfort

7.9

Reviews

1 / 20
10.0
Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them
Delta
8.0
Very good
7,897 reviews
Alaska Airlines
8.0
Very good
9,825 reviews
Check prices

Food

7.1

Boarding

8.2

Overall

8.0

Entertainment

7.1

Crew

8.5

Comfort

7.9

Reviews

1 / 20
10.0
Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them
Hawaiian Airlines
7.9
Good
2,344 reviews
Alaska Airlines
8.0
Very good
9,825 reviews
Check prices

Food

7.1

Boarding

8.2

Overall

8.0

Entertainment

7.1

Crew

8.5

Comfort

7.9

Reviews

1 / 20
10.0
Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them
SWISS
7.5
Good
1,574 reviews
Alaska Airlines
8.0
Very good
9,825 reviews
Check prices

Food

7.1

Boarding

8.2

Overall

8.0

Entertainment

7.1

Crew

8.5

Comfort

7.9

Reviews

1 / 20
10.0
Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them
United Airlines
7.4
Good
8,619 reviews
Alaska Airlines
8.0
Very good
9,825 reviews
Check prices

Food

7.1

Boarding

8.2

Overall

8.0

Entertainment

7.1

Crew

8.5

Comfort

7.9

Reviews

1 / 20
10.0
Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them

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. 6 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 4 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, WestJet 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$ 56, while round-trip flights cost around C$ 68.

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

    A round-trip flight to Seattle will typically cost around C$ 405, however they can be found for as little as C$ 47.

  • Where does the fastest flight to Seattle depart from?

    For those looking to save time traveling to Seattle, Victoria Intl offers the quickest one-way flight (0 hours 51 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. Seatac Inn 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
Tukwila
Marysville
Bothell
Leavenworth
Tacoma
Olympia
Lynnwood

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Yes, Cheapflights has a feature called Price Alerts, which notifies users when flight prices change. Track prices for your flight to Seattle today and book when you’re ready!

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