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C$ 141+ 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 13/5. Fares are subject to change and may not be available on all flights or dates of travel.
— SEA
29 Apr — 6 May1
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 24 April 2025.

Round-trip from

C$ 222

One-way from

C$ 141

Popular in

July

Cheapest in

February

Average price

C$ 551

Good round-trip deal

C$ 475 or less

Good one-way deal

C$ 313 or less
WestJet
  • WestJet
  • 24/5-30/5
  • 2 total stops
  • 17h 49m total
  • Toronto to Seattle
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WestJet
  • WestJet
  • 13/5
  • 1 total stop
  • 9h 58m total
  • Toronto to Seattle
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Highest demand for flights based on searches. 10% potential increase in price (C$ 80 potential increase over avg. RT price).
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Cheapest flight prices on average. 1% potential price decrease (C$ 14 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 24 April 2025.

Sat 24/56:00 a.m.YHM - SEA
1 stop9h 58mWestJet
Fri 30/51:50 p.m.SEA - YHM
1 stop7h 51mWestJet
Deal found 23/4C$ 222
Sat 24/512:25 p.m.YTZ - SEA
1 stop10h 12mAir Canada
Fri 30/57:20 a.m.SEA - YTZ
1 stop9h 30mAir Canada
Deal found 23/4C$ 334
Tue 10/63:00 p.m.YYZ - SEA
1 stop8h 37mAir Canada
Sat 14/67:20 a.m.SEA - YYZ
1 stop9h 28mAir Canada
Deal found 23/4C$ 335
Wed 21/58:00 a.m.YYZ - SEA
1 stop7h 58mWestJet
Tue 27/57:05 a.m.SEA - YYZ
1 stop8h 51mWestJet
Deal found 23/4C$ 338
Wed 21/51:30 p.m.YYZ - SEA
1 stop8h 40mMultiple Airlines
Wed 28/56:00 a.m.SEA - YYZ
1 stop15h 12mMultiple Airlines
Deal found 23/4C$ 360
Sat 30/86:00 a.m.YKF - SEA
1 stop9h 58mMultiple Airlines
Sun 7/93:39 p.m.SEA - YKF
2 stops10h 36mMultiple Airlines
Deal found 23/4C$ 366
Wed 17/96:00 a.m.YKF - SEA
1 stop9h 59mWestJet
Tue 23/92:05 p.m.SEA - YKF
1 stop7h 40mWestJet
Deal found 23/4C$ 370
Thu 29/54:45 p.m.YYZ - SEA
Nonstop5h 19mAlaska Airlines
Mon 2/67:23 a.m.SEA - YYZ
Nonstop4h 37mAlaska Airlines
Deal found 23/4C$ 373
Wed 17/93:59 p.m.YYZ - SEA
1 stop7h 31mDelta
Tue 23/912:40 a.m.SEA - YYZ
1 stop7h 49mDelta
Deal found 23/4C$ 391
Sun 25/58:25 a.m.YYZ - SEA
Nonstop5h 20mUnited Airlines
Thu 29/511:50 p.m.SEA - YYZ
1 stop11h 48mUnited Airlines
Deal found 23/4C$ 403
Tue 6/56:00 a.m.YHM - SEA
3 stops35h 25mMultiple Airlines
Fri 9/51:50 p.m.SEA - YHM
1 stop7h 51mMultiple Airlines
Deal found 23/4C$ 464
Sat 7/63:25 p.m.YTZ - SEA
1 stop8h 12mMultiple Airlines
Sat 14/67:15 p.m.SEA - YTZ
3 stops33h 47mMultiple Airlines
Deal found 22/4C$ 522

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 24 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

Sat 24/5

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

1 stop9h 58m

Seattle/Tacoma Intl

Fri 30/5

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

1 stop7h 51m

C$ 222

TorontoSeattle

YTZ - SEA

YTZSEA

Toronto Island

Sat 24/5

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

1 stop10h 12m

Seattle/Tacoma Intl

Fri 30/5

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

1 stop9h 30m

C$ 334

TorontoSeattle

YYZ - SEA

YYZSEA

Toronto Pearson Intl

Tue 10/6

3:00 p.m.-8:37 p.m.

1 stop8h 37m

Seattle/Tacoma Intl

Sat 14/6

7:20 a.m.-7:48 p.m.

1 stop9h 28m

C$ 335

TorontoSeattle

YYZ - SEA

YYZSEA

Toronto Pearson Intl

Wed 21/5

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

1 stop7h 58m

Seattle/Tacoma Intl

Tue 27/5

7:05 a.m.-6:56 p.m.

1 stop8h 51m

C$ 338

TorontoSeattle

YYZ - SEA

YYZSEA

Toronto Pearson Intl

Wed 21/5

1:30 p.m.-7:10 p.m.

1 stop8h 40m

Seattle/Tacoma Intl

Wed 28/5

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

1 stop15h 12m

C$ 360

TorontoSeattle

YYZ - SEA

YYZSEA

Toronto Pearson Intl

Thu 29/5

4:45 p.m.-7:04 p.m.

Nonstop5h 19m

Seattle/Tacoma Intl

Mon 2/6

7:23 a.m.-3:00 p.m.

Nonstop4h 37m

C$ 373

TorontoSeattle

YKF - SEA

YKFSEA

Toronto Region of Waterloo Intl

Thu 12/6

6:00 a.m.-12:31 p.m.

2 stops33h 31m

Seattle/Tacoma Intl

Sun 15/6

7:05 a.m.-12:46 a.m.

1 stop14h 41m

C$ 392

TorontoSeattle

YYZ - SEA

YYZSEA

Toronto Pearson Intl

Thu 12/6

5:50 p.m.-12:03 a.m.

1 stop9h 13m

Seattle/Tacoma Intl

Sun 15/6

9:58 p.m.-11:20 a.m.

1 stop10h 22m

C$ 400

TorontoSeattle

YYZ - SEA

YYZSEA

Toronto Pearson Intl

Sun 25/5

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

Nonstop5h 20m

Seattle/Tacoma Intl

Thu 29/5

11:50 p.m.-2:38 p.m.

1 stop11h 48m

C$ 403

HamiltonSeattle

YHM - SEA

YHMSEA

Hamilton

Tue 6/5

6:00 a.m.-2:25 p.m.

3 stops35h 25m

Seattle/Tacoma Intl

Fri 9/5

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

1 stop7h 51m

C$ 464

Flights are sorted by cheapest round-trip flights first.

Deals found on 23/4

Showing 1-10 of 25 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 18 April 2025.

The best time to book flights to Seattle is 75 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 9 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 Saturday, 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$ 132

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 24 April 2025.
Get a feel of what it's like to fly with Alaska Airlines, Delta and United 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
9,918 reviews
Check prices

Crew

8.5

Boarding

8.2

Overall

8.0

Comfort

7.9

Entertainment

7.1

Food

7.1

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
9,918 reviews
Alaska Airlines
8.0
Very good
9,918 reviews
Check prices

Crew

8.5

Boarding

8.2

Overall

8.0

Comfort

7.9

Entertainment

7.1

Food

7.1

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
7,920 reviews
Alaska Airlines
8.0
Very good
9,918 reviews
Check prices

Crew

8.5

Boarding

8.2

Overall

8.0

Comfort

7.9

Entertainment

7.1

Food

7.1

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
8,685 reviews
Alaska Airlines
8.0
Very good
9,918 reviews
Check prices

Crew

8.5

Boarding

8.2

Overall

8.0

Comfort

7.9

Entertainment

7.1

Food

7.1

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
American Airlines
7.2
Good
10,000 reviews
Alaska Airlines
8.0
Very good
9,918 reviews
Check prices

Crew

8.5

Boarding

8.2

Overall

8.0

Comfort

7.9

Entertainment

7.1

Food

7.1

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
WestJet
7.2
Good
2,816 reviews
Alaska Airlines
8.0
Very good
9,918 reviews
Check prices

Crew

8.5

Boarding

8.2

Overall

8.0

Comfort

7.9

Entertainment

7.1

Food

7.1

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. 7 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 3 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$ 44, while round-trip flights cost around C$ 66.

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

    A round-trip flight to Seattle will typically cost around C$ 1,074, 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, Vancouver offers the quickest one-way flight (0 hours 55 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
Tukwila
SeaTac
Tacoma
Marysville
Bothell
Olympia
Lynnwood
Leavenworth

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Yes! Cheapflights helps users easily find flights to Seattle with no change fees.

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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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