Find flights
Deals
Airlines
Travel Guide

C$ 176+ 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 2/3. Fares are subject to change and may not be available on all flights or dates of travel.
— SEA
29 Jan — 5 Feb1
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 30 December 2025.

Wed 31/124:45 p.m.YYZ - SEA
Nonstop5h 26mAlaska Airlines
Tue 13/17:55 a.m.SEA - YYZ
Nonstop4h 40mAlaska Airlines
Deal found 28/12C$ 755
Wed 31/126:30 a.m.YYZ - SEA
1 stop9h 09mMultiple Airlines
Mon 12/17:55 a.m.SEA - YYZ
Nonstop4h 40mMultiple Airlines
Deal found 28/12C$ 770
Wed 31/125:55 p.m.YYZ - SEA
1 stop10h 04mUnited Airlines
Sun 11/17:00 a.m.SEA - YYZ
1 stop11h 21mUnited Airlines
Deal found 28/12C$ 821
Wed 31/124:45 p.m.YYZ - SEA
Nonstop5h 26mAlaska Airlines
Sat 10/17:55 a.m.SEA - YYZ
Nonstop4h 40mAlaska Airlines
Deal found 28/12C$ 869
Wed 31/126:30 a.m.YYZ - SEA
1 stop13h 15mWestJet
Sun 11/13:10 p.m.SEA - YYZ
2 stops11h 48mWestJet
Deal found 28/12C$ 886
Sun 28/1210:30 a.m.YYZ - SEA
1 stop9h 15mDelta
Sat 10/15:37 p.m.SEA - YYZ
1 stop9h 31mDelta
Deal found 28/12C$ 892
Wed 31/126:05 a.m.YYZ - SEA
1 stop11h 37mDelta
Sat 10/19:35 a.m.SEA - YYZ
1 stop9h 18mDelta
Deal found 28/12C$ 900
Sun 28/1210:15 p.m.YYZ - SEA
1 stop14h 49mMultiple Airlines
Sat 10/17:55 a.m.SEA - YYZ
Nonstop4h 40mMultiple Airlines
Deal found 28/12C$ 962
Sun 28/127:40 p.m.YYZ - SEA
1 stop18h 47mUnited Airlines
Thu 15/17:00 a.m.SEA - YYZ
1 stop13h 20mUnited Airlines
Deal found 28/12C$ 990
Sun 28/1210:15 p.m.YYZ - SEA
1 stop12h 05mWestJet
Sat 10/111:55 a.m.SEA - YYZ
2 stops15h 03mWestJet
Deal found 28/12C$ 1,030
Wed 31/125:55 p.m.YYZ - SEA
1 stop10h 04mUnited Airlines
Sat 10/18:10 a.m.SEA - YYZ
Nonstop4h 43mUnited Airlines
Deal found 28/12C$ 1,094
Tue 30/126:20 a.m.YKF - SEA
2 stops17h 26mWestJet
Sun 4/15:30 p.m.SEA - YKF
2 stops8h 58mWestJet
Deal found 29/12C$ 1,129

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 30 December 2025.

Round-trip from

C$ 271

One-way from

C$ 176

Popular in

December

Cheapest in

February

Average price

C$ 616

Good round-trip deal

C$ 301 or less

Good one-way deal

C$ 250 or less
WestJet
  • WestJet
  • 13/1-21/1
  • 2 total stops
  • 17h 20m total
  • Toronto to Seattle
Search Deals
WestJet
  • WestJet
  • 2/3
  • 1 total stop
  • 23h 09m total
  • Toronto to Seattle
Search Deals
Highest demand for flights based on searches. 0% potential increase in price.
Search Deals
Cheapest flight prices on average. 2% potential price decrease (C$ 14 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 30 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

HamiltonSeattle

YHM - SEA

YHMSEA

Hamilton

Wed 22/4

6:10 p.m.-2:19 p.m.

1 stop23h 09m

Seattle/Tacoma Intl

Wed 29/4

7:05 a.m.-5:10 p.m.

1 stop7h 05m

C$ 259

TorontoSeattle

YYZ - SEA

YYZSEA

Toronto Pearson Intl

Fri 27/3

7:45 a.m.-2:19 p.m.

1 stop9h 34m

Seattle/Tacoma Intl

Sat 11/4

11:55 a.m.-11:38 p.m.

2 stops8h 43m

C$ 280

TorontoSeattle

YYZ - SEA

YYZSEA

Toronto Pearson Intl

Sat 14/3

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

Nonstop5h 33m

Seattle/Tacoma Intl

Sun 15/3

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

Nonstop4h 40m

C$ 283

HamiltonSeattle

YHM - SEA

YHMSEA

Hamilton

Thu 2/4

6:10 p.m.-2:19 p.m.

1 stop23h 09m

Seattle/Tacoma Intl

Wed 8/4

3:10 p.m.-5:16 p.m.

1 stop23h 06m

C$ 283

TorontoSeattle

YYZ - SEA

YYZSEA

Toronto Pearson Intl

Sat 10/1

3:45 p.m.-11:01 p.m.

1 stop10h 16m

Seattle/Tacoma Intl

Sat 17/1

5:00 a.m.-3:02 p.m.

1 stop7h 02m

C$ 287

TorontoSeattle

YYZ - SEA

YYZSEA

Toronto Pearson Intl

Mon 9/2

6:10 a.m.-10:59 p.m.

1 stop19h 49m

Seattle/Tacoma Intl

Thu 19/2

10:55 a.m.-9:21 p.m.

1 stop7h 26m

C$ 287

TorontoSeattle

YYZ - SEA

YYZSEA

Toronto Pearson Intl

Thu 19/2

3:30 p.m.-10:43 p.m.

1 stop10h 13m

Seattle/Tacoma Intl

Tue 24/2

11:59 p.m.-9:58 a.m.

1 stop6h 59m

C$ 287

TorontoSeattle

YYZ - SEA

YYZSEA

Toronto Pearson Intl

Mon 2/2

10:15 p.m.-2:19 p.m.

2 stops19h 04m

Seattle/Tacoma Intl

Tue 10/2

3:10 p.m.-5:23 p.m.

2 stops23h 13m

C$ 290

TorontoSeattle

YYZ - SEA

YYZSEA

Toronto Pearson Intl

Tue 20/1

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

Nonstop5h 26m

Seattle/Tacoma Intl

Sun 25/1

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

Nonstop4h 43m

C$ 291

TorontoSeattle

YYZ - SEA

YYZSEA

Toronto Pearson Intl

Tue 10/3

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

Nonstop5h 33m

Seattle/Tacoma Intl

Thu 12/3

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

Nonstop4h 40m

C$ 291

Flights are sorted by cheapest round-trip flights first.

Deals found on 28/12

Showing 1-10 of 60 results
1
2
3
...
6

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 26 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 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.

Weekly flight availability to Seattle

The most flights from Toronto to Seattle are scheduled on a Monday (7 on average). You will have fewer flight options on Friday, which is when the least amount of flights are scheduled (3 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$ 158
Air Canada
Air Canada
From C$ 140
Alaska Airlines
Alaska Airlines
From C$ 183
United Airlines
United Airlines
From C$ 178

What are the cheapest airlines that fly to Seattle?

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

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 30 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
11,574 reviews
Check prices

Comfort

7.8

Crew

8.5

Boarding

8.1

Entertainment

7.0

Food

7.1

Overall

8.0

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
11,574 reviews
Alaska Airlines
8.0
Very good
11,574 reviews
Check prices

Comfort

7.8

Crew

8.5

Boarding

8.1

Entertainment

7.0

Food

7.1

Overall

8.0

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
8,015 reviews
Alaska Airlines
8.0
Very good
11,574 reviews
Check prices

Comfort

7.8

Crew

8.5

Boarding

8.1

Entertainment

7.0

Food

7.1

Overall

8.0

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
9,123 reviews
Alaska Airlines
8.0
Very good
11,574 reviews
Check prices

Comfort

7.8

Crew

8.5

Boarding

8.1

Entertainment

7.0

Food

7.1

Overall

8.0

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
3,226 reviews
Alaska Airlines
8.0
Very good
11,574 reviews
Check prices

Comfort

7.8

Crew

8.5

Boarding

8.1

Entertainment

7.0

Food

7.1

Overall

8.0

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
10,564 reviews
Alaska Airlines
8.0
Very good
11,574 reviews
Check prices

Comfort

7.8

Crew

8.5

Boarding

8.1

Entertainment

7.0

Food

7.1

Overall

8.0

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$ 39, while round-trip flights cost around C$ 80.

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

    A round-trip flight to Seattle will typically cost around C$ 152, however they can be found for as little as C$ 80.

  • 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 53 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
Mukilteo
Tacoma
Kent
Tukwila
Bothell
Cashmere
Olympia
Renton
Marysville
Lynnwood

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Fly with Cheapflights

Find the best flight deals on Cheapflights, where travelers can enjoy low prices and a wide availability of flights to their desired destinations.

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!

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.