HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Seattle

$147+ Cheap flights from Toronto (YTO) to Seattle (SEA)

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 3/19. Fares are subject to change and may not be available on all flights or dates of travel.
YTO — SEA
Feb 25 — Mar 41
Tue 2/25
Tue 3/4
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Toronto to Seattle with Cheapflights

1. Tell us where you want to go
Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”
2. Select your favorite providers
We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.
3. Compare prices and book
Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

The best prices from Toronto to Seattle/Tacoma Intl are usually found in January or February, booked 84 days in advance, depart on a Wednesday or Monday and return on a Thursday

Cheap flight deals from Toronto to Seattle

Discover tips and strategies to find the most affordable flight options for your journey from Toronto (YTO) to Seattle (SEA). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated February 20, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$233
(Mytrip)

One-way from

$147
(Air Canada)

Popular in

May

Cheapest in

January

Average price

$266

Good round-trip deal

$250 or less

Good one-way deal

$182 or less
Provider with most accurate pricing for Toronto (YTO)-Seattle/Tacoma Intl flight deals.
Search Deals
Provider most trusted by Cheapflights users for Toronto (YTO)-Seattle/Tacoma Intl flights.
Search Deals
From Toronto (YTO) to Seattle/Tacoma Intl
Search Deals
One-way flight from Toronto (YTO) to Seattle/Tacoma Intl
Search Deals
Highest demand for flights based on searches. 14% potential increase in price ($69 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 1% potential price decrease ($8 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in February 2025
Search Deals
Price to beat on a round-trip flight from Toronto (YTO) to Seattle/Tacoma Intl.
Search Deals
Price to beat on a one-way flight from Toronto (YTO) to Seattle/Tacoma Intl.
Search Deals

Find flight deals from Toronto to Seattle

Cheapest flights from Toronto to Seattle
Explore the most affordable flight options available from Toronto to Seattle. Find the lowest fares from popular airlines and budget airlines, with prices last updated on February 20, 2025.

This Mytrip deal was found by Cheapflights users on 2/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 3/207:25 pmYYZ - SEA
1 stop16h 18mMultiple Airlines
Tue 3/258:04 pmSEA - YYZ
2 stops30h 51mMultiple Airlines
Deal found 2/19$233
This Air Canada deal was found by Cheapflights users on 2/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 3/207:05 pmYYZ - SEA
Nonstop5h 25mAir Canada
Tue 3/256:05 amSEA - YYZ
Nonstop4h 45mAir Canada
Deal found 2/19$242
This United Airlines deal was found by Cheapflights users on 2/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/87:05 pmYYZ - SEA
Nonstop5h 21mUnited Airlines
Tue 4/156:05 amSEA - YYZ
Nonstop4h 55mUnited Airlines
Deal found 2/19$243
This Trip.com deal was found by Cheapflights users on 2/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 3/134:20 pmYYZ - SEA
Nonstop5h 24mAlaska Airlines
Wed 3/197:15 amSEA - YYZ
Nonstop4h 40mAlaska Airlines
Deal found 2/20$248
This Booking.com deal was found by Cheapflights users on 2/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/84:20 pmYTZ - SEA
2 stops8h 43mAir Canada
Tue 4/155:45 amSEA - YTZ
2 stops11h 05mAir Canada
Deal found 2/19$260
This Vakatrip deal was found by Cheapflights users on 2/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Vakatrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/141:30 pmYYZ - SEA
1 stop9h 58mWestJet
Thu 6/127:05 amSEA - YYZ
2 stops10h 58mWestJet
Deal found 2/19$262
This Delta deal was found by Cheapflights users on 2/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/812:14 pmYYZ - SEA
1 stop13h 20mDelta
Mon 4/1412:40 amSEA - YYZ
1 stop7h 54mDelta
Deal found 2/19$274
This American Airlines deal was found by Cheapflights users on 2/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 3/265:14 pmYYZ - SEA
1 stop10h 34mAmerican Airlines
Sun 3/3011:14 pmSEA - YYZ
1 stop8h 01mAmerican Airlines
Deal found 2/20$288
This Flysmarter deal was found by Cheapflights users on 2/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Flysmarter is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 3/1312:35 pmYYZ - SEA
2 stops11h 21mBritish Airways
Wed 3/1911:14 pmSEA - YYZ
1 stop8h 01mBritish Airways
Deal found 2/19$290
This Kiwi.com deal was found by Cheapflights users on 2/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 4/49:30 pmYKF - SEA
1 stop20h 04mMultiple Airlines
Wed 4/911:30 amSEA - YKF
2 stops10h 46mMultiple Airlines
Deal found 2/19$293
This Kiwi.com deal was found by Cheapflights users on 2/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/36:30 amYKF - SEA
2 stops30h 30mWestJet
Wed 4/93:15 pmSEA - YKF
1 stop7h 01mWestJet
Deal found 2/19$296
This Trip.com deal was found by Cheapflights users on 2/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/226:00 amYHM - SEA
1 stop9h 58mWestJet
Sun 5/257:05 amSEA - YHM
1 stop14h 36mWestJet
Deal found 2/20$300

Find flights from Toronto to Seattle within your budget

Customize your flight search to find flights from Toronto to Seattle that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated February 20, 2025.

Fly from

Toronto

Fly to

Seattle

Route

Depart

Return

Price

TorontoSeattle

YYZ - SEA

YYZSEA

Toronto Pearson Intl

Thu 3/20

7:25 pm-8:43 am

1 stop16h 18m

Seattle/Tacoma Intl

Tue 3/25

8:04 pm-5:55 am

2 stops30h 51m

$233

TorontoSeattle

YYZ - SEA

YYZSEA

Toronto Pearson Intl

Thu 3/20

7:05 pm-9:30 pm

Nonstop5h 25m

Seattle/Tacoma Intl

Tue 3/25

7:05 pm-6:09 am

1 stop8h 04m

$242

TorontoSeattle

YYZ - SEA

YYZSEA

Toronto Pearson Intl

Tue 4/8

7:05 pm-9:26 pm

Nonstop5h 21m

Seattle/Tacoma Intl

Tue 4/15

6:05 am-2:00 pm

Nonstop4h 55m

$243

TorontoSeattle

YYZ - SEA

YYZSEA

Toronto Pearson Intl

Thu 3/13

4:20 pm-6:44 pm

Nonstop5h 24m

Seattle/Tacoma Intl

Wed 3/19

7:15 am-2:55 pm

Nonstop4h 40m

$248

TorontoSeattle

YTZ - SEA

YTZSEA

Toronto Island

Tue 4/8

4:20 pm-10:03 pm

2 stops8h 43m

Seattle/Tacoma Intl

Tue 4/15

5:45 am-7:50 pm

2 stops11h 05m

$260

TorontoSeattle

YYZ - SEA

YYZSEA

Toronto Pearson Intl

Wed 5/14

1:30 pm-8:28 pm

1 stop9h 58m

Seattle/Tacoma Intl

Thu 6/12

7:05 am-9:03 pm

2 stops10h 58m

$262

TorontoSeattle

YYZ - SEA

YYZSEA

Toronto Pearson Intl

Tue 4/8

12:14 pm-10:34 pm

1 stop13h 20m

Seattle/Tacoma Intl

Mon 4/14

12:40 am-11:34 am

1 stop7h 54m

$274

TorontoSeattle

YYZ - SEA

YYZSEA

Toronto Pearson Intl

Wed 3/26

5:14 pm-12:48 am

1 stop10h 34m

Seattle/Tacoma Intl

Sun 3/30

11:14 pm-10:15 am

1 stop8h 01m

$288

TorontoSeattle

YYZ - SEA

YYZSEA

Toronto Pearson Intl

Thu 3/13

12:35 pm-8:56 pm

2 stops11h 21m

Seattle/Tacoma Intl

Wed 3/19

11:14 pm-10:15 am

1 stop8h 01m

$290

TorontoSeattle

YKF - SEA

YKFSEA

Toronto Region of Waterloo Intl

Fri 4/4

9:30 pm-2:34 pm

1 stop20h 04m

Seattle/Tacoma Intl

Wed 4/9

11:30 am-1:16 am

2 stops10h 46m

$293

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/19

Showing 1-10 of 27 results
1
2
3

Compare providers for flights from Toronto to Seattle

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Toronto to Seattle in February.
ProviderPrice AccuracyTrust Score*
FlightHubPrice Accuracy3 starsTrust Score*3 stars
ExpediaPrice Accuracy1 starTrust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on Toronto-Seattle flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Toronto-Seattle flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Toronto-Seattle flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Toronto-Seattle flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Toronto-Seattle flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Best time to book a flight from Toronto to Seattle

Have a flexible travel schedule? Discover the best time to fly to Seattle from Toronto 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.

Travel insights for flights from Toronto to Seattle

Get recent, data-driven insights about flights from Toronto to Seattle including ideal travel times, pricing trends, and more.

How far ahead should I book a flight from Toronto 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 February 14, 2025.

The price you pay for your flight from Toronto to Seattle may vary depending on when you book. For the best chance of a lower fare, look to book 84 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.

What is the cheapest month to book a flight from Toronto to Seattle?

Currently, January is the cheapest month in which you can book a flight from Toronto to Seattle (average of $238). Flying from Toronto to Seattle in July is currently the most expensive (average of $411). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from YTO to SEA?

Find hourly flight availability from Toronto to Seattle. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated February 20, 2025.

A simple way to save on the total cost of your ticket is to fly from Toronto to Seattle in the evening. If you’re flexible enough to do this you can expect to save up to 28% on your trip compared to booking a flight in the morning.

What is the cheapest day to fly from Toronto to Seattle?

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

Travelers seeking maximum savings on their Toronto to Seattle flight should consider departing on Monday evenings when fares are most often at their lowest. Monday at noon flights should be avoided if possible as fares are typically the most expensive at this time.

Weekly flight availability from Toronto to Seattle

Explore weekly flight availability from Toronto to Seattle. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated February 20, 2025.

The most flights from YTO to SEA are scheduled on a Wednesday (5 on average). You will have fewer flight options on Tuesday, which is when the least amount of flights are scheduled (2 on average).

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 0.7 - 6.6 inches per month. November is typically the wettest month, when rainfall can reach 6.6 in. July is typically the driest time to visit Seattle when rainfall is around 0.7 in.

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 66.2 F. Travelers looking to avoid the cold should look outside of December, when temperatures are typically at their lowest (around 41.0 F).

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 February 20, 2025.
Read reviews from past customers who have flown Alaska Airlines, Delta and Austrian Airlines from Toronto to Seattle. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Alaska Airlines
8.0
Very good
9,692 reviews

Crew

8.5

Food

7.1

Comfort

7.9

Overall

8.0

Boarding

8.2

Entertainment

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
9,692 reviews
Alaska Airlines
8.0
Very good
9,692 reviews

Crew

8.5

Food

7.1

Comfort

7.9

Overall

8.0

Boarding

8.2

Entertainment

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
8,220 reviews
Alaska Airlines
8.0
Very good
9,692 reviews

Crew

8.5

Food

7.1

Comfort

7.9

Overall

8.0

Boarding

8.2

Entertainment

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

Austrian Airlines
7.6
Good
773 reviews
Alaska Airlines
8.0
Very good
9,692 reviews

Crew

8.5

Food

7.1

Comfort

7.9

Overall

8.0

Boarding

8.2

Entertainment

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
8,766 reviews
Alaska Airlines
8.0
Very good
9,692 reviews

Crew

8.5

Food

7.1

Comfort

7.9

Overall

8.0

Boarding

8.2

Entertainment

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
9,692 reviews

Crew

8.5

Food

7.1

Comfort

7.9

Overall

8.0

Boarding

8.2

Entertainment

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

Related info for your journey

Find useful and relevant information for your journey from Toronto to Seattle. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly into for flights to Seattle from Toronto?

    Seattle/Tacoma Intl (SEA), located 11.4 mi from the city center, is the airport you fly into when you book flights from Toronto to Seattle. 6 airlines have flights to Seattle/Tacoma Intl from Toronto on a regular basis. Booking flights from Toronto to Seattle/Tacoma Intl should not be difficult; the airport handles an average of 3 inbound flights from Toronto per day.

  • What are the cheapest airlines flying from Toronto to Seattle round-trip?

    Flying on Air Canada is currently your cheapest option to Seattle, with prices starting at $242. Additional round-trip tickets that might be worth considering are offered by United Airlines and Alaska Airlines, with the lowest prices starting at $243 and $248, respectively. Users have found that Air Canada is 39% cheaper than the other options available to this destination.

  • What are the cheapest airlines to fly from Toronto to Seattle one-way?

    To fly one-way, consider booking your trip with Air Canada, which is currently one of the cheapest options available, starting at $147. Alaska Airlines flights start at $153 while deals on WestJet start at $155 one-way.

  • What are the most popular routes from Toronto to Seattle?

    Most travelers choose Toronto Pearson Intl - Seattle/Tacoma Intl, Toronto Region of Waterloo Intl - Seattle/Tacoma Intl or Toronto Island - Seattle/Tacoma Intl when deciding on the best route from Toronto to Seattle.

  • What are the most reliable airlines from Toronto to Seattle?

    The top 3 most reliable airlines when flying from Toronto to Seattle are Alaska Airlines (82%), Hawaiian Airlines (82%) and Qatar Airways (69%).

  • What are the cheapest flights from Toronto to Seattle?

    On average you can expect to pay $277 for a flight from Toronto to Seattle. The cheapest flight overall is $144 while the most popular route, (Toronto Pearson Intl - Seattle/Tacoma Intl) is currently priced at $190.

  • Can I find deals for flights from Toronto to Seattle that include hotel bookings?

    Yes. In addition to deals on Toronto to Seattle flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Toronto to Seattle?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Toronto to Seattle.

  • Can I find deals for business class flights from Toronto to Seattle?

    Yes. Cheapflights offers flight deals from Toronto to Seattle by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Toronto to Seattle?

    Currently, January is the cheapest month in which you can book a flight from Toronto to Seattle (average of $238). Flying from Toronto to Seattle in July is currently the most expensive (average of $411). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Traveling to a place near Toronto?

Book flights to Toronto if you plan to visit one of these locations
SeaTac
Tukwila
Renton
Tacoma
Lacey
Ocean Shores
Leavenworth
Olympia
Federal Way
Centralia
Marysville
Cle Elum
Mukilteo
Aberdeen
Lakewood
Issaquah
Shoreline
Lynnwood
Shelton
Silverdale

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.

Top 6 airlines flying from Toronto to Seattle

Discover the top 6 airlines that operate flights from Toronto to Seattle. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated February 20, 2025.
AirlineCheapestAverageFlexibilityOn-time
Air CanadaCheapest$139Average$515FlexibilityNo cancel feeOn-time67%
WestJetCheapest$163Average$428FlexibilityNo cancel feeOn-time60%
United AirlinesCheapest$240Average$466FlexibilityNo cancel feeOn-time69%
Alaska AirlinesCheapest$246Average$419FlexibilityNo cancel feeOn-time75%
DeltaCheapest$292Average$464FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$402Average$695FlexibilityNo cancel feeOn-time71%
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.