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C$ 210+ 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 25/4. Fares are subject to change and may not be available on all flights or dates of travel.
— SEA
11 Jan — 18 Jan1
1 adult
1 adult, Economy, 0 bags

Flights to Seattle in 2025

Enter your travel dates to find the best prices.

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 12 December 2025.

Thu 25/1210:00 a.m.YYZ - SEA
1 stop13h 57mUnited Airlines
Wed 7/110:58 a.m.SEA - YYZ
1 stop7h 23mUnited Airlines
Deal found 10/12C$ 485
Wed 31/127:40 p.m.YYZ - SEA
2 stops17h 15mUnited Airlines
Sun 15/211:35 p.m.SEA - YYZ
1 stop9h 13mUnited Airlines
Deal found 10/12C$ 512
Fri 26/126:30 a.m.YYZ - SEA
1 stop17h 37mUnited Airlines
Wed 7/12:10 p.m.SEA - YYZ
1 stop16h 48mUnited Airlines
Deal found 11/12C$ 548
Thu 25/1210:00 a.m.YYZ - SEA
1 stop13h 57mUnited Airlines
Thu 1/111:59 p.m.SEA - YYZ
1 stop6h 59mUnited Airlines
Deal found 9/12C$ 549
Wed 24/128:30 a.m.YYZ - SEA
1 stop12h 36mUnited Airlines
Tue 6/19:00 a.m.SEA - YYZ
2 stops22h 40mUnited Airlines
Deal found 9/12C$ 570
Wed 24/126:30 a.m.YYZ - SEA
1 stop15h 15mUnited Airlines
Thu 1/111:59 p.m.SEA - YYZ
1 stop6h 59mUnited Airlines
Deal found 9/12C$ 610
Mon 29/1210:45 a.m.YYZ - SEA
1 stop13h 22mUnited Airlines
Wed 31/125:02 a.m.SEA - YYZ
1 stop14h 39mUnited Airlines
Deal found 10/12C$ 629
Thu 25/1210:00 a.m.YYZ - SEA
1 stop13h 57mUnited Airlines
Fri 26/1211:15 p.m.SEA - YYZ
1 stop16h 42mUnited Airlines
Deal found 9/12C$ 639
Thu 25/123:00 p.m.YTZ - SEA
1 stop11h 05mMultiple Airlines
Sat 27/125:49 p.m.SEA - YTZ
2 stops13h 46mMultiple Airlines
Deal found 11/12C$ 786
Tue 30/126:30 p.m.YTZ - SEA
2 stops23h 01mAir Canada
Mon 5/18:00 p.m.SEA - YTZ
2 stops22h 35mAir Canada
Deal found 12/12C$ 870
Mon 29/126:30 p.m.YTZ - SEA
2 stops31h 16mAir Canada
Mon 5/18:00 p.m.SEA - YTZ
2 stops22h 35mAir Canada
Deal found 12/12C$ 896
Wed 24/126:10 p.m.YHM - SEA
1 stop23h 10mWestJet
Tue 6/13:10 p.m.SEA - YHM
1 stop23h 07mWestJet
Deal found 9/12C$ 987

Find flight deals to Seattle

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 12 December 2025.

Round-trip from

C$ 274

One-way from

C$ 210

Popular in

June

Cheapest in

February

Average price

C$ 556

Good round-trip deal

C$ 357 or less

Good one-way deal

C$ 292 or less
Alaska Airlines
  • Alaska Airlines
  • 11/4-14/4
  • Nonstop
  • 10h 00m total
  • Toronto to Seattle
Search Deals
Air Canada
  • Air Canada
  • 25/4
  • Nonstop
  • 5h 21m total
  • Toronto to Seattle
Search Deals
Highest demand for flights based on searches. 10% potential increase in price (C$ 57 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 1% potential price decrease (C$ 8 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in December 2025
Search Deals
Price to beat on a round-trip flight from Toronto to Seattle/Tacoma Intl.
Search Deals
Price to beat on a one-way flight from Toronto to Seattle/Tacoma Intl.
Search Deals

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 12 December 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

YYZ - SEA

YYZSEA

Toronto Pearson Intl

Sat 14/3

4:45 p.m.-7:18 p.m.

Nonstop5h 33m

Seattle/Tacoma Intl

Tue 17/3

7:55 a.m.-3:35 p.m.

Nonstop4h 40m

C$ 290

TorontoSeattle

YYZ - SEA

YYZSEA

Toronto Pearson Intl

Wed 21/1

4:45 p.m.-7:17 p.m.

Nonstop5h 32m

Seattle/Tacoma Intl

Sun 1/2

7:55 a.m.-3:35 p.m.

Nonstop4h 40m

C$ 301

TorontoSeattle

YYZ - SEA

YYZSEA

Toronto Pearson Intl

Wed 28/1

4:45 p.m.-7:17 p.m.

Nonstop5h 32m

Seattle/Tacoma Intl

Thu 5/2

7:55 a.m.-3:35 p.m.

Nonstop4h 40m

C$ 302

TorontoSeattle

YYZ - SEA

YYZSEA

Toronto Pearson Intl

Sun 25/1

7:50 p.m.-10:16 p.m.

Nonstop5h 26m

Seattle/Tacoma Intl

Sun 1/2

8:10 a.m.-3:53 p.m.

Nonstop4h 43m

C$ 303

TorontoSeattle

YYZ - SEA

YYZSEA

Toronto Pearson Intl

Fri 30/1

4:45 p.m.-7:17 p.m.

Nonstop5h 32m

Seattle/Tacoma Intl

Mon 2/2

7:55 a.m.-3:35 p.m.

Nonstop4h 40m

C$ 313

TorontoSeattle

YYZ - SEA

YYZSEA

Toronto Pearson Intl

Fri 30/1

4:45 p.m.-7:17 p.m.

Nonstop5h 32m

Seattle/Tacoma Intl

Sun 1/2

7:55 a.m.-3:35 p.m.

Nonstop4h 40m

C$ 313

TorontoSeattle

YKF - SEA

YKFSEA

Toronto Region of Waterloo Intl

Fri 22/5

6:00 a.m.-8:28 p.m.

1 stop17h 28m

Seattle/Tacoma Intl

Mon 25/5

7:05 a.m.-12:45 a.m.

1 stop14h 40m

C$ 317

TorontoSeattle

YKF - SEA

YKFSEA

Toronto Region of Waterloo Intl

Thu 30/4

6:00 a.m.-8:28 p.m.

1 stop17h 28m

Seattle/Tacoma Intl

Thu 7/5

7:05 a.m.-12:45 a.m.

1 stop14h 40m

C$ 319

TorontoSeattle

YYZ - SEA

YYZSEA

Toronto Pearson Intl

Sat 24/1

6:50 a.m.-6:28 p.m.

2 stops14h 38m

Seattle/Tacoma Intl

Sat 31/1

11:45 p.m.-11:48 a.m.

1 stop9h 03m

C$ 334

TorontoSeattle

YYZ - SEA

YYZSEA

Toronto Pearson Intl

Wed 14/1

10:00 a.m.-6:26 p.m.

2 stops11h 26m

Seattle/Tacoma Intl

Wed 21/1

5:00 a.m.-7:45 p.m.

2 stops11h 45m

C$ 334

Flights are sorted by cheapest round-trip flights first.

Deals found on 11/12

Showing 1-10 of 60 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 5 December 2025.

The best time to book flights to Seattle is 87 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 9 hours 14 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 evenings, when prices are usually at their highest.

Weekly flight availability to Seattle

The most flights from Toronto to Seattle are scheduled on a Thursday (7 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (5 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$ 142
Alaska Airlines
Alaska Airlines
From C$ 184
United Airlines
United Airlines
From C$ 180

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 12 December 2025.
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
8.0
Very good
11,429 reviews
Check prices

Entertainment

7.0

Overall

8.0

Comfort

7.8

Boarding

8.1

Crew

8.5

Food

7.1

Reviews

1 / 20
10.0
Excellent

Anonymous,Dec 2025

SJC - SEA

The flight was great. Don’t have to make it better. Everything was OK.
Alaska Airlines
8.0
Very good
11,429 reviews
Alaska Airlines
8.0
Very good
11,429 reviews
Check prices

Entertainment

7.0

Overall

8.0

Comfort

7.8

Boarding

8.1

Crew

8.5

Food

7.1

Reviews

1 / 20
10.0
Excellent

Anonymous,Dec 2025

SJC - SEA

The flight was great. Don’t have to make it better. Everything was OK.
Delta
7.9
Good
8,008 reviews
Alaska Airlines
8.0
Very good
11,429 reviews
Check prices

Entertainment

7.0

Overall

8.0

Comfort

7.8

Boarding

8.1

Crew

8.5

Food

7.1

Reviews

1 / 20
10.0
Excellent

Anonymous,Dec 2025

SJC - SEA

The flight was great. Don’t have to make it better. Everything was OK.
United Airlines
7.4
Good
9,095 reviews
Alaska Airlines
8.0
Very good
11,429 reviews
Check prices

Entertainment

7.0

Overall

8.0

Comfort

7.8

Boarding

8.1

Crew

8.5

Food

7.1

Reviews

1 / 20
10.0
Excellent

Anonymous,Dec 2025

SJC - SEA

The flight was great. Don’t have to make it better. Everything was OK.
WestJet
7.2
Good
3,194 reviews
Alaska Airlines
8.0
Very good
11,429 reviews
Check prices

Entertainment

7.0

Overall

8.0

Comfort

7.8

Boarding

8.1

Crew

8.5

Food

7.1

Reviews

1 / 20
10.0
Excellent

Anonymous,Dec 2025

SJC - SEA

The flight was great. Don’t have to make it better. Everything was OK.
Air Canada
7.1
Good
10,514 reviews
Alaska Airlines
8.0
Very good
11,429 reviews
Check prices

Entertainment

7.0

Overall

8.0

Comfort

7.8

Boarding

8.1

Crew

8.5

Food

7.1

Reviews

1 / 20
10.0
Excellent

Anonymous,Dec 2025

SJC - SEA

The flight was great. Don’t have to make it better. Everything was OK.

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 6 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$ 28, while round-trip flights cost around C$ 67.

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

    A round-trip flight to Seattle will typically cost around C$ 160, however they can be found for as little as C$ 67.

  • 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
Leavenworth
SeaTac
Tukwila
Mukilteo
Tacoma
Bothell
Cashmere
Olympia
Renton
Marysville
Lynnwood

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