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$151+ 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 1/14. Fares are subject to change and may not be available on all flights or dates of travel.
YTO — SEA
Dec 23 — Dec 301
Mon 12/23
Mon 12/30
1 adult, Economy
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The best prices from Toronto to Seattle/Tacoma Intl are usually found in November or October, 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 December 18, 2024.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$254
(United Airlines)

One-way from

$151
(Air Canada)

Popular in

March

Cheapest in

November

Average price

$456
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, 10% 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 December 2024
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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 December 18, 2024.

This Kiwi.com deal was found by Cheapflights users on 12/17. 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 12/316:30 amYYZ - SEA
2 stops14h 31mMultiple Airlines
Wed 1/82:16 pmSEA - YYZ
1 stop13h 30mMultiple Airlines
Deal found 12/17$426
This FlightHub deal was found by Cheapflights users on 12/17. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/2910:40 pmYYZ - SEA
1 stop12h 25mWestJet
Thu 1/93:15 pmSEA - YYZ
2 stops11h 45mWestJet
Deal found 12/17$439
This United Airlines deal was found by Cheapflights users on 12/17. 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 12/246:30 amYYZ - SEA
1 stop11h 55mUnited Airlines
Tue 1/215:25 pmSEA - YYZ
1 stop19h 01mUnited Airlines
Deal found 12/17$497
This Delta deal was found by Cheapflights users on 12/17. 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.
Fri 12/277:15 amYYZ - SEA
1 stop8h 30mDelta
Tue 1/76:00 amSEA - YYZ
1 stop10h 09mDelta
Deal found 12/17$506
This American Airlines deal was found by Cheapflights users on 12/17. 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.
Mon 12/235:14 pmYYZ - SEA
1 stop10h 43mAmerican Airlines
Tue 1/2110:18 pmSEA - YYZ
1 stop17h 08mAmerican Airlines
Deal found 12/17$510
This Alaska Airlines deal was found by Cheapflights users on 12/17. 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 12/244:22 pmYYZ - SEA
Nonstop5h 20mAlaska Airlines
Sat 2/17:27 amSEA - YYZ
Nonstop4h 38mAlaska Airlines
Deal found 12/17$533
This WestJet deal was found by Cheapflights users on 12/17. 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 WestJet is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/246:05 pmYHM - SEA
2 stops25h 55mWestJet
Tue 1/213:15 pmSEA - YHM
1 stop22h 58mWestJet
Deal found 12/17$557
This Air Canada deal was found by Cheapflights users on 12/17. 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.
Wed 12/188:45 amYYZ - SEA
1 stop8h 40mAir Canada
Sat 1/186:05 amSEA - YYZ
Nonstop4h 45mAir Canada
Deal found 12/17$583
This WestJet deal was found by Cheapflights users on 12/17. 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 WestJet is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/246:30 amYKF - SEA
1 stop10h 51mWestJet
Wed 1/13:15 pmSEA - YKF
1 stop7h 01mWestJet
Deal found 12/17$601
This Mytrip deal was found by Cheapflights users on 12/16. 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.
Mon 12/302:00 pmYTZ - SEA
2 stops21h 05mMultiple Airlines
Thu 1/29:21 pmSEA - YTZ
2 stops18h 32mMultiple Airlines
Deal found 12/16$608
This Mytrip deal was found by Cheapflights users on 12/17. 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.
Mon 12/231:05 pmYKF - SEA
3 stops31h 24mMultiple Airlines
Thu 1/23:15 pmSEA - YKF
1 stop12h 00mMultiple Airlines
Deal found 12/17$917
This Air Canada deal was found by Cheapflights users on 12/16. 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.
Mon 12/168:25 pmYTZ - SEA
2 stops25h 00mAir Canada
Mon 12/235:45 amSEA - YTZ
2 stops11h 05mAir Canada
Deal found 12/16$1,614

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 December 18, 2024.

Fly from

Any airport

Fly to

Any airport

Route

Depart

Return

Price

TorontoSeattle

YYZ - SEA

YYZSEA

Toronto Pearson Intl

Sat 2/15

7:05 pm-9:30 pm

Nonstop5h 25m

Seattle/Tacoma Intl

Tue 2/25

5:02 am-3:02 pm

1 stop7h 00m

$254

TorontoSeattle

YYZ - SEA

YYZSEA

Toronto Pearson Intl

Tue 1/14

8:00 am-2:30 pm

1 stop9h 30m

Seattle/Tacoma Intl

Tue 1/21

3:05 pm-12:57 am

1 stop6h 52m

$255

TorontoSeattle

YYZ - SEA

YYZSEA

Toronto Pearson Intl

Wed 1/15

8:00 pm-9:40 am

1 stop16h 40m

Seattle/Tacoma Intl

Wed 1/22

7:10 am-11:35 pm

2 stops13h 25m

$256

TorontoSeattle

YYZ - SEA

YYZSEA

Toronto Pearson Intl

Sun 2/16

1:20 pm-11:00 pm

1 stop12h 40m

Seattle/Tacoma Intl

Mon 2/24

11:05 pm-11:56 am

1 stop9h 51m

$259

TorontoSeattle

YYZ - SEA

YYZSEA

Toronto Pearson Intl

Sun 2/16

4:10 pm-6:34 pm

Nonstop5h 24m

Seattle/Tacoma Intl

Wed 2/26

7:18 am-2:55 pm

Nonstop4h 37m

$263

TorontoSeattle

YYZ - SEA

YYZSEA

Toronto Pearson Intl

Mon 1/20

8:00 pm-2:21 pm

1 stop21h 21m

Seattle/Tacoma Intl

Sat 1/25

3:20 pm-6:00 am

2 stops11h 40m

$289

TorontoSeattle

YTZ - SEA

YTZSEA

Toronto Island

Fri 1/10

6:25 pm-2:25 pm

2 stops23h 00m

Seattle/Tacoma Intl

Fri 1/17

5:45 am-6:43 pm

2 stops9h 58m

$292

TorontoSeattle

YKF - SEA

YKFSEA

Toronto Region of Waterloo Intl

Thu 1/16

6:30 am-2:21 pm

1 stop10h 51m

Seattle/Tacoma Intl

Sun 1/19

7:10 am-6:15 am

2 stops20h 05m

$306

TorontoSeattle

YYZ - SEA

YYZSEA

Toronto Pearson Intl

Thu 1/23

11:46 am-7:00 pm

1 stop10h 14m

Seattle/Tacoma Intl

Sun 1/26

12:45 am-4:15 pm

1 stop12h 30m

$320

TorontoSeattle

YYZ - SEA

YYZSEA

Toronto Pearson Intl

Thu 1/9

3:00 pm-8:57 am

2 stops20h 57m

Seattle/Tacoma Intl

Wed 1/15

7:00 am-4:46 pm

1 stop6h 46m

$325

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/17

Showing 1-10 of 28 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 December.
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 December 13, 2024.

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 December 18, 2024.

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.

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 December 18, 2024.
Read reviews from past customers who have flown Air Canada, United Airlines and Delta 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
9,552 reviews

Boarding

8.2

Comfort

7.9

Crew

8.5

Entertainment

7.1

Overall

8.0

Food

7.2

Reviews

1 / 10

How do online staff who book reservations get a passenger’s birthdate wrong

Alaska Airlines
8.0
Very good
9,552 reviews
Alaska Airlines
8.0
Very good
9,552 reviews

Boarding

8.2

Comfort

7.9

Crew

8.5

Entertainment

7.1

Overall

8.0

Food

7.2

Reviews

1 / 10

How do online staff who book reservations get a passenger’s birthdate wrong

Delta
8.0
Very good
8,604 reviews
Alaska Airlines
8.0
Very good
9,552 reviews

Boarding

8.2

Comfort

7.9

Crew

8.5

Entertainment

7.1

Overall

8.0

Food

7.2

Reviews

1 / 10

How do online staff who book reservations get a passenger’s birthdate wrong

Austrian Airlines
7.6
Good
787 reviews
Alaska Airlines
8.0
Very good
9,552 reviews

Boarding

8.2

Comfort

7.9

Crew

8.5

Entertainment

7.1

Overall

8.0

Food

7.2

Reviews

1 / 10

How do online staff who book reservations get a passenger’s birthdate wrong

United Airlines
7.4
Good
9,059 reviews
Alaska Airlines
8.0
Very good
9,552 reviews

Boarding

8.2

Comfort

7.9

Crew

8.5

Entertainment

7.1

Overall

8.0

Food

7.2

Reviews

1 / 10

How do online staff who book reservations get a passenger’s birthdate wrong

American Airlines
7.2
Good
10,000 reviews
Alaska Airlines
8.0
Very good
9,552 reviews

Boarding

8.2

Comfort

7.9

Crew

8.5

Entertainment

7.1

Overall

8.0

Food

7.2

Reviews

1 / 10

How do online staff who book reservations get a passenger’s birthdate wrong

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 1 inbound flight from Toronto per day.

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

    Flying on United Airlines is currently your cheapest option to Seattle, with prices starting at $254. Additional round-trip tickets that might be worth considering are offered by Air Canada and Delta, with the lowest prices starting at $255 and $259, respectively. Users have found that United Airlines is 43% 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 $151. Delta flights start at $159 while deals on United Airlines start at $163 one-way.

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

    Most travelers choose Toronto Pearson Intl - Seattle/Tacoma Intl, Toronto Island - 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 (100%), Hawaiian Airlines (89%) and Alaska Airlines (88%).

  • What are the cheapest flights from Toronto to Seattle?

    On average you can expect to pay $933 for a flight from Toronto to Seattle. The cheapest flight overall is $157 while the most popular route, (Toronto Pearson Intl - Seattle/Tacoma Intl) is currently priced at $245.

  • 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

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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 December 18, 2024.
AirlineCheapestAverageFlexibilityOn-time
Air CanadaCheapest$139Average$522FlexibilityNo cancel feeOn-time67%
WestJetCheapest$163Average$435FlexibilityNo cancel feeOn-time60%
Alaska AirlinesCheapest$246Average$422FlexibilityNo cancel feeOn-time75%
United AirlinesCheapest$263Average$545FlexibilityNo cancel feeOn-time69%
DeltaCheapest$292Average$472FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$402Average$695FlexibilityNo cancel feeOn-time71%
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