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C$ 216+ 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 9/5. Fares are subject to change and may not be available on all flights or dates of travel.
— SEA
30 Mar — 6 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 25 March 2025.

Round-trip from

C$ 352

One-way from

C$ 216

Popular in

May

Cheapest in

February

Average price

C$ 511

Good round-trip deal

C$ 515 or less

Good one-way deal

C$ 319 or less
29/4-30/4
  • 29/4-30/4
  • 3 total stops
  • 23h 20m total
  • Toronto to Seattle
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9/5
  • 9/5
  • 2 total stops
  • 20h 10m total
  • Toronto to Seattle
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Highest demand for flights based on searches. 13% potential increase in price (C$ 121 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease (C$ 18 potential savings vs. average RT price).
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Average for round-trip flights in March 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 25 March 2025.

Tue 15/76:00 a.m.YKF - SEA
1 stop9h 58mWestJet
Tue 29/77:05 a.m.SEA - YKF
1 stop8h 51mWestJet
Deal found 24/3C$ 348
Tue 29/48:00 a.m.YYZ - SEA
1 stop7h 58mMultiple Airlines
Wed 30/412:30 p.m.SEA - YYZ
2 stops15h 22mMultiple Airlines
Deal found 24/3C$ 352
Tue 29/46:00 a.m.YHM - SEA
1 stop9h 58mWestJet
Wed 30/41:50 p.m.SEA - YHM
1 stop7h 51mWestJet
Deal found 24/3C$ 360
Tue 29/46:00 a.m.YKF - SEA
2 stops32h 35mMultiple Airlines
Wed 30/41:50 p.m.SEA - YKF
1 stop12h 25mMultiple Airlines
Deal found 24/3C$ 367
Tue 15/47:55 a.m.YYZ - SEA
1 stop9h 26mWestJet
Wed 23/43:15 p.m.SEA - YYZ
2 stops11h 43mWestJet
Deal found 24/3C$ 367
Fri 9/512:25 p.m.YTZ - SEA
1 stop10h 12mAir Canada
Sun 18/57:20 a.m.SEA - YTZ
1 stop9h 30mAir Canada
Deal found 24/3C$ 401
Thu 1/512:00 p.m.YYZ - SEA
1 stop10h 37mAir Canada
Thu 8/52:55 p.m.SEA - YYZ
1 stop7h 14mAir Canada
Deal found 23/3C$ 414
Tue 29/46:00 a.m.YHM - SEA
2 stops32h 35mMultiple Airlines
Wed 30/41:50 p.m.SEA - YHM
1 stop7h 51mMultiple Airlines
Deal found 24/3C$ 427
Thu 24/44:45 p.m.YYZ - SEA
Nonstop5h 14mAlaska Airlines
Sun 27/47:15 a.m.SEA - YYZ
Nonstop4h 45mAlaska Airlines
Deal found 25/3C$ 428
Thu 8/55:50 p.m.YYZ - SEA
1 stop9h 09mDelta
Sun 25/511:50 p.m.SEA - YYZ
1 stop8h 50mDelta
Deal found 23/3C$ 444
Thu 29/58:30 a.m.YYZ - SEA
Nonstop5h 21mUnited Airlines
Wed 4/611:40 a.m.SEA - YYZ
Nonstop4h 57mUnited Airlines
Deal found 24/3C$ 458
Tue 6/55:20 p.m.YYZ - SEA
1 stop8h 37mAmerican Airlines
Mon 12/51:10 a.m.SEA - YYZ
1 stop8h 20mAmerican Airlines
Deal found 24/3C$ 464

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 25 March 2025.
Use the filters below to find and compare flights to Seattle that are best for you.

Fly from

Toronto

Route

Depart

Return

Price

TorontoSeattle

YKF - SEA

YKFSEA

Toronto Region of Waterloo Intl

Tue 15/7

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

1 stop9h 58m

Seattle/Tacoma Intl

Tue 29/7

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

1 stop8h 51m

C$ 348

TorontoSeattle

YYZ - SEA

YYZSEA

Toronto Pearson Intl

Tue 29/4

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

1 stop7h 58m

Seattle/Tacoma Intl

Wed 30/4

12:30 p.m.-6:52 a.m.

2 stops15h 22m

C$ 352

HamiltonSeattle

YHM - SEA

YHMSEA

Hamilton

Tue 29/4

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

1 stop9h 58m

Seattle/Tacoma Intl

Wed 30/4

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

1 stop7h 51m

C$ 360

TorontoSeattle

YKF - SEA

YKFSEA

Toronto Region of Waterloo Intl

Tue 29/4

6:00 a.m.-11:35 a.m.

2 stops32h 35m

Seattle/Tacoma Intl

Wed 30/4

1:50 p.m.-5:15 a.m.

1 stop12h 25m

C$ 367

TorontoSeattle

YYZ - SEA

YYZSEA

Toronto Pearson Intl

Tue 15/4

7:55 a.m.-2:21 p.m.

1 stop9h 26m

Seattle/Tacoma Intl

Wed 23/4

3:15 p.m.-5:58 a.m.

2 stops11h 43m

C$ 367

TorontoSeattle

YTZ - SEA

YTZSEA

Toronto Island

Fri 9/5

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

1 stop10h 12m

Seattle/Tacoma Intl

Sun 18/5

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

1 stop9h 30m

C$ 401

TorontoSeattle

YYZ - SEA

YYZSEA

Toronto Pearson Intl

Thu 1/5

12:00 p.m.-7:37 p.m.

1 stop10h 37m

Seattle/Tacoma Intl

Thu 8/5

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

1 stop7h 14m

C$ 414

HamiltonSeattle

YHM - SEA

YHMSEA

Hamilton

Tue 29/4

6:00 a.m.-11:35 a.m.

2 stops32h 35m

Seattle/Tacoma Intl

Wed 30/4

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

1 stop7h 51m

C$ 427

TorontoSeattle

YYZ - SEA

YYZSEA

Toronto Pearson Intl

Thu 24/4

4:45 p.m.-6:59 p.m.

Nonstop5h 14m

Seattle/Tacoma Intl

Sun 27/4

7:15 a.m.-3:00 p.m.

Nonstop4h 45m

C$ 428

TorontoSeattle

YYZ - SEA

YYZSEA

Toronto Pearson Intl

Tue 29/4

2:45 p.m.-10:43 p.m.

1 stop10h 58m

Seattle/Tacoma Intl

Wed 30/4

6:00 a.m.-1:57 p.m.

Nonstop4h 57m

C$ 443

Flights are sorted by cheapest round-trip flights first.

Deals found on 23/3

Showing 1-10 of 31 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 21 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 21 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 Monday (5 on average). You will have fewer flight options on Tuesday, 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$ 264

Alaska Airlines

Alaska Airlines

From C$ 239

WestJet

WestJet

From C$ 214

United Airlines

United Airlines

From C$ 266

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 25 March 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
9,785 reviews
Check prices

Entertainment

7.1

Crew

8.5

Comfort

7.9

Food

7.1

Boarding

8.2

Overall

8.0

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
9,785 reviews
Alaska Airlines
8.0
Very good
9,785 reviews
Check prices

Entertainment

7.1

Crew

8.5

Comfort

7.9

Food

7.1

Boarding

8.2

Overall

8.0

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
7,890 reviews
Alaska Airlines
8.0
Very good
9,785 reviews
Check prices

Entertainment

7.1

Crew

8.5

Comfort

7.9

Food

7.1

Boarding

8.2

Overall

8.0

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
2,330 reviews
Alaska Airlines
8.0
Very good
9,785 reviews
Check prices

Entertainment

7.1

Crew

8.5

Comfort

7.9

Food

7.1

Boarding

8.2

Overall

8.0

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
8,605 reviews
Alaska Airlines
8.0
Very good
9,785 reviews
Check prices

Entertainment

7.1

Crew

8.5

Comfort

7.9

Food

7.1

Boarding

8.2

Overall

8.0

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
9,785 reviews
Check prices

Entertainment

7.1

Crew

8.5

Comfort

7.9

Food

7.1

Boarding

8.2

Overall

8.0

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 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$ 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$ 427, 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).

  • Which airport is closest to Showbox SoDo?

    If being close to Showbox SoDo is important to you, you’ll want to land at Seattle/Tacoma Intl Airport.

  • 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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How does Cheapflights help users find flights to Seattle?

Deals for Seattle flights are sourced from 900+ travel sites when you use Cheapflights. When all flight results come back, Cheapflights lets you sort and filter flights using different criteria to choose to your preference, such as price, airport, cabin class, and plenty of other options.

Why should you use Cheapflights to find cheap flight tickets to Seattle?

It’s simple! Cheapflights, which is free to use for everyone, saves millions of users time and money every year by helping them find the cheapest and most suitable flights to Seattle.

Can Cheapflights find flights to Seattle with no change fees?

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

Can Cheapflights notify me if prices for flights to Seattle become cheaper?

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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