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$145+ 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 2/2. Fares are subject to change and may not be available on all flights or dates of travel.
YTO — SEA
Jan 22 — Jan 291
Wed 1/22
Wed 1/29
1 adult, Economy
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The best prices from Toronto to Seattle/Tacoma Intl are usually found in January or February, booked 84 days in advance, depart on a Tuesday or Wednesday and return on a Wednesday

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 January 17, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$234
(Kiwi.com)

One-way from

$145
(Trip.com)

Popular in

March

Cheapest in

January

Average price

$266
Provider with most accurate pricing for Toronto (YTO)-Seattle/Tacoma Intl flight deals.
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Provider most trusted by Cheapflights users for Toronto (YTO)-Seattle/Tacoma Intl flights.
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From Toronto (YTO) to Seattle/Tacoma Intl
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One-way flight from Toronto (YTO) to Seattle/Tacoma Intl
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High demand for flights, 2% potential price rise
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Best time to find cheap flights, 1% potential price drop
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Average for round-trip flights in January 2025
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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 January 17, 2025.

This Kiwi.com deal was found by Cheapflights users on 1/15. 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 2/218:00 pmYYZ - SEA
1 stop16h 30mMultiple Airlines
Tue 2/253:48 pmSEA - YYZ
1 stop11h 55mMultiple Airlines
Deal found 1/15$234
This Alaska Airlines deal was found by Cheapflights users on 1/15. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 2/114:20 pmYYZ - SEA
Nonstop5h 23mAlaska Airlines
Tue 2/187:18 amSEA - YYZ
Nonstop4h 37mAlaska Airlines
Deal found 1/15$241
This Air Canada deal was found by Cheapflights users on 1/16. 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.
Fri 2/217:05 pmYYZ - SEA
Nonstop5h 25mAir Canada
Tue 2/256:05 amSEA - YYZ
Nonstop4h 45mAir Canada
Deal found 1/16$247
This Kiwi.com deal was found by Cheapflights users on 1/15. 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.
Tue 2/117:55 amYYZ - SEA
1 stop9h 26mWestJet
Wed 2/1911:30 amSEA - YYZ
2 stops9h 56mWestJet
Deal found 1/15$248
This United Airlines deal was found by Cheapflights users on 1/15. 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.
Thu 2/137:05 pmYYZ - SEA
Nonstop5h 25mUnited Airlines
Sun 2/236:05 amSEA - YYZ
Nonstop4h 45mUnited Airlines
Deal found 1/15$252
This Air Canada deal was found by Cheapflights users on 1/16. 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 5/112:25 pmYTZ - SEA
1 stop10h 12mAir Canada
Sat 5/37:20 amSEA - YTZ
1 stop9h 30mAir Canada
Deal found 1/16$270
This Delta deal was found by Cheapflights users on 1/15. 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 2/116:30 amYYZ - SEA
1 stop7h 15mDelta
Thu 2/206:00 amSEA - YYZ
1 stop7h 09mDelta
Deal found 1/15$271
This American Airlines deal was found by Cheapflights users on 1/16. 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.
Sun 2/95:14 pmYYZ - SEA
1 stop10h 52mAmerican Airlines
Mon 2/1712:59 amSEA - YYZ
1 stop9h 01mAmerican Airlines
Deal found 1/16$290
This eDestinos deal was found by Cheapflights users on 1/16. 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 eDestinos is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/36:30 amYKF - SEA
2 stops30h 30mMultiple Airlines
Mon 3/103:15 pmSEA - YKF
1 stop12h 25mMultiple Airlines
Deal found 1/16$300
This Mytrip deal was found by Cheapflights users on 1/16. 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 2/136:45 amYTZ - SEA
2 stops20h 40mMultiple Airlines
Mon 2/177:47 pmSEA - YTZ
2 stops22h 43mMultiple Airlines
Deal found 1/16$356
This Kissandfly.com deal was found by Cheapflights users on 1/16. 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 Kissandfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 2/66:30 amYKF - SEA
1 stop10h 51mWestJet
Wed 2/123:15 pmSEA - YKF
1 stop7h 01mWestJet
Deal found 1/16$376
This oojo deal was found by Cheapflights users on 1/15. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 2/266:15 pmYHM - SEA
1 stop23h 06mWestJet
Sat 4/53:15 pmSEA - YHM
1 stop23h 46mWestJet
Deal found 1/15$385

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 January 17, 2025.

Fly from

Any airport

Fly to

Any airport

Route

Depart

Return

Price

TorontoSeattle

YYZ - SEA

YYZSEA

Toronto Pearson Intl

Fri 2/21

8:00 pm-9:30 am

1 stop16h 30m

Seattle/Tacoma Intl

Tue 2/25

3:48 pm-6:43 am

1 stop11h 55m

$234

TorontoSeattle

YYZ - SEA

YYZSEA

Toronto Pearson Intl

Tue 2/11

4:20 pm-6:43 pm

Nonstop5h 23m

Seattle/Tacoma Intl

Wed 2/19

7:18 am-2:55 pm

Nonstop4h 37m

$241

TorontoSeattle

YYZ - SEA

YYZSEA

Toronto Pearson Intl

Fri 2/21

7:05 pm-9:30 pm

Nonstop5h 25m

Seattle/Tacoma Intl

Tue 2/25

6:05 am-1:50 pm

Nonstop4h 45m

$247

TorontoSeattle

YYZ - SEA

YYZSEA

Toronto Pearson Intl

Tue 2/11

7:55 am-2:21 pm

1 stop9h 26m

Seattle/Tacoma Intl

Wed 2/19

11:30 am-12:26 am

2 stops9h 56m

$248

TorontoSeattle

YYZ - SEA

YYZSEA

Toronto Pearson Intl

Wed 3/26

7:05 pm-9:30 pm

Nonstop5h 25m

Seattle/Tacoma Intl

Sun 3/30

6:05 am-1:55 pm

Nonstop4h 50m

$256

TorontoSeattle

YTZ - SEA

YTZSEA

Toronto Island

Thu 5/1

12:25 pm-7:37 pm

1 stop10h 12m

Seattle/Tacoma Intl

Sat 5/3

7:20 am-7:50 pm

1 stop9h 30m

$270

TorontoSeattle

YYZ - SEA

YYZSEA

Toronto Pearson Intl

Tue 2/11

6:30 am-10:45 am

1 stop7h 15m

Seattle/Tacoma Intl

Fri 2/21

6:00 am-4:09 pm

1 stop7h 09m

$271

TorontoSeattle

YYZ - SEA

YYZSEA

Toronto Pearson Intl

Sun 2/9

5:14 pm-1:06 am

1 stop10h 52m

Seattle/Tacoma Intl

Mon 2/17

12:59 am-1:00 pm

1 stop9h 01m

$290

TorontoSeattle

YKF - SEA

YKFSEA

Toronto Region of Waterloo Intl

Mon 3/3

6:30 am-10:00 am

2 stops30h 30m

Seattle/Tacoma Intl

Mon 3/10

3:15 pm-6:40 am

1 stop12h 25m

$300

TorontoSeattle

YTZ - SEA

YTZSEA

Toronto Island

Thu 2/13

6:45 am-12:25 am

2 stops20h 40m

Seattle/Tacoma Intl

Mon 2/17

7:47 pm-9:30 pm

2 stops22h 43m

$356

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/16

Showing 1-10 of 26 results
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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 January.
ProviderPrice AccuracyTrust Score*
FlightHubPrice Accuracy3 starsTrust Score*3 stars
eDreamsPrice 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 January 10, 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 January 17, 2025.

A simple way to save on the total cost of your ticket is to fly from Toronto to Seattle in the morning. If you’re flexible enough to do this you can expect to save up to 11% on your trip compared to booking a flight at noon.

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 Saturday 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 January 17, 2025.

The most flights from YTO to SEA are scheduled on a Wednesday (4 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 January 17, 2025.
Read reviews from past customers who have flown Alaska Airlines, WestJet and United 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
9,681 reviews

Food

7.1

Entertainment

7.1

Crew

8.5

Boarding

8.2

Overall

8.0

Comfort

7.9

Reviews

1 / 10

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
9,681 reviews
Alaska Airlines
8.0
Very good
9,681 reviews

Food

7.1

Entertainment

7.1

Crew

8.5

Boarding

8.2

Overall

8.0

Comfort

7.9

Reviews

1 / 10

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
8,511 reviews
Alaska Airlines
8.0
Very good
9,681 reviews

Food

7.1

Entertainment

7.1

Crew

8.5

Boarding

8.2

Overall

8.0

Comfort

7.9

Reviews

1 / 10

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
8,965 reviews
Alaska Airlines
8.0
Very good
9,681 reviews

Food

7.1

Entertainment

7.1

Crew

8.5

Boarding

8.2

Overall

8.0

Comfort

7.9

Reviews

1 / 10

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
9,681 reviews

Food

7.1

Entertainment

7.1

Crew

8.5

Boarding

8.2

Overall

8.0

Comfort

7.9

Reviews

1 / 10

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
2,824 reviews
Alaska Airlines
8.0
Very good
9,681 reviews

Food

7.1

Entertainment

7.1

Crew

8.5

Boarding

8.2

Overall

8.0

Comfort

7.9

Reviews

1 / 10

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 Alaska Airlines is currently your cheapest option to Seattle, with prices starting at $241. Additional round-trip tickets that might be worth considering are offered by WestJet and Air Canada, with the lowest prices starting at $248 and $249, respectively. Users have found that Alaska Airlines is 41% 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 Alaska Airlines, which is currently one of the cheapest options available, starting at $147. Air Canada flights start at $152 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 Hamilton - 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 Qatar Airways (88%), Alaska Airlines (82%) and Hawaiian Airlines (82%).

  • What are the cheapest flights from Toronto to Seattle?

    On average you can expect to pay $432 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 $252.

  • 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
Federal Way
Ocean Shores
Leavenworth
Olympia
Marysville
Centralia
Cle Elum
Mukilteo
Aberdeen
Lakewood
Issaquah
Shoreline
Lynnwood
Shelton
Silverdale

Browse thousands of different options on Cheapflights for your next trip

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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 January 17, 2025.
AirlineCheapestAverageFlexibilityOn-time
Air CanadaCheapest$139Average$518FlexibilityNo cancel feeOn-time67%
WestJetCheapest$163Average$434FlexibilityNo cancel feeOn-time60%
United AirlinesCheapest$243Average$534FlexibilityNo cancel feeOn-time69%
Alaska AirlinesCheapest$246Average$424FlexibilityNo cancel feeOn-time75%
DeltaCheapest$292Average$464FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$402Average$695FlexibilityNo cancel feeOn-time71%
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