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$140+ 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 12/11. Fares are subject to change and may not be available on all flights or dates of travel.
YTO — SEA
Nov 19 — Nov 261
Tue 11/19
Tue 11/26
1 adult, Economy
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The best prices from Toronto to Seattle/Tacoma Intl are usually found in October or November, 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 November 14, 2024.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Popular in

March

Cheapest in

October

Round-trip from

$248
(Air Canada)

One-way from

$140
(Kiwi.com)
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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High demand for flights, 18% potential price rise
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Best time to find cheap flights, 22% potential price drop
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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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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 November 14, 2024.

This Alaska Airlines deal was found by Cheapflights users on 11/13. 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.
Fri 12/64:20 pmYYZ - SEA
Nonstop5h 19mAlaska Airlines
Tue 12/107:22 amSEA - YYZ
Nonstop4h 33mAlaska Airlines
Deal found 11/13$261
This Delta deal was found by Cheapflights users on 11/13. 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.
Sun 12/155:04 pmYYZ - SEA
1 stop8h 21mDelta
Sun 1/1211:05 pmSEA - YYZ
1 stop7h 15mDelta
Deal found 11/13$268
This United Airlines deal was found by Cheapflights users on 11/14. 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 12/57:45 pmYYZ - SEA
Nonstop5h 25mMultiple Airlines
Wed 12/115:00 amSEA - YYZ
1 stop7h 02mMultiple Airlines
Deal found 11/14$270
This Trip.com deal was found by Cheapflights users on 11/13. 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.
Sun 12/1510:35 pmYYZ - SEA
1 stop18h 46mWestJet
Thu 1/163:15 pmSEA - YYZ
2 stops11h 45mWestJet
Deal found 11/13$297
This United Airlines deal was found by Cheapflights users on 11/13. 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.
Sat 12/79:00 amYYZ - SEA
2 stops15h 05mUnited Airlines
Wed 12/115:00 amSEA - YYZ
1 stop7h 02mUnited Airlines
Deal found 11/13$299
This American Airlines deal was found by Cheapflights users on 11/13. 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.
Sat 12/75:14 pmYYZ - SEA
1 stop8h 55mAmerican Airlines
Tue 12/1012:45 amSEA - YYZ
1 stop9h 25mAmerican Airlines
Deal found 11/13$308
This Mytrip deal was found by Cheapflights users on 11/14. 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.
Fri 12/134:10 pmYTZ - SEA
3 stops35h 00mMultiple Airlines
Mon 12/169:21 pmSEA - YTZ
2 stops19h 44mMultiple Airlines
Deal found 11/14$347
This Air Canada deal was found by Cheapflights users on 11/14. 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 12/57:45 pmYYZ - SEA
Nonstop5h 25mAir Canada
Wed 12/113:05 pmSEA - YYZ
1 stop6h 59mAir Canada
Deal found 11/14$375
This Trip.com deal was found by Cheapflights users on 11/14. 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.
Tue 11/266:30 amYKF - SEA
1 stop10h 51mWestJet
Fri 11/293:15 pmSEA - YKF
1 stop7h 01mWestJet
Deal found 11/14$445
This oojo deal was found by Cheapflights users on 11/13. 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.
Mon 12/96:05 pmYHM - SEA
1 stop23h 16mWestJet
Wed 12/113:15 pmSEA - YHM
1 stop22h 58mWestJet
Deal found 11/13$462
This Kiwi.com deal was found by Cheapflights users on 11/14. 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.
Sun 12/89:15 pmYKF - SEA
2 stops29h 55mMultiple Airlines
Wed 12/113:15 pmSEA - YKF
1 stop7h 01mMultiple Airlines
Deal found 11/14$482
This Mytrip deal was found by Cheapflights users on 11/14. 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.
Sun 12/87:05 pmYHM - SEA
2 stops32h 05mMultiple Airlines
Wed 12/115:15 amSEA - YHM
2 stops32h 58mMultiple Airlines
Deal found 11/14$528

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 2,752,363 searches. Data last updated November 14, 2024.

Fly from

Any airport

Fly to

Any airport

Route

Depart

Return

Price

TorontoSeattle

YYZ - SEA

YYZSEA

Toronto Pearson Intl

Mon 1/20

4:20 pm-6:43 pm

Nonstop5h 23m

Seattle/Tacoma Intl

Mon 1/27

7:27 am-3:05 pm

Nonstop4h 38m

$257

TorontoSeattle

YYZ - SEA

YYZSEA

Toronto Pearson Intl

Thu 1/9

7:05 pm-9:30 pm

Nonstop5h 25m

Seattle/Tacoma Intl

Mon 1/13

7:05 pm-6:52 am

1 stop8h 47m

$266

TorontoSeattle

YYZ - SEA

YYZSEA

Toronto Pearson Intl

Thu 1/9

6:00 am-10:45 am

1 stop7h 45m

Seattle/Tacoma Intl

Mon 1/13

11:05 pm-11:59 am

1 stop9h 54m

$268

TorontoSeattle

YYZ - SEA

YYZSEA

Toronto Pearson Intl

Thu 12/5

7:45 pm-10:10 pm

Nonstop5h 25m

Seattle/Tacoma Intl

Wed 12/11

5:00 am-3:02 pm

1 stop7h 02m

$270

TorontoSeattle

YYZ - SEA

YYZSEA

Toronto Pearson Intl

Mon 1/27

9:00 am-9:11 pm

2 stops15h 11m

Seattle/Tacoma Intl

Mon 1/27

11:59 pm-1:42 pm

1 stop10h 43m

$294

TorontoSeattle

YYZ - SEA

YYZSEA

Toronto Pearson Intl

Sun 12/15

10:35 pm-2:21 pm

1 stop18h 46m

Seattle/Tacoma Intl

Thu 1/16

3:15 pm-6:00 am

2 stops11h 45m

$297

TorontoSeattle

YYZ - SEA

YYZSEA

Toronto Pearson Intl

Sat 12/7

5:14 pm-11:09 pm

1 stop8h 55m

Seattle/Tacoma Intl

Tue 12/10

12:45 am-1:10 pm

1 stop9h 25m

$308

TorontoSeattle

YTZ - SEA

YTZSEA

Toronto Island

Thu 1/9

8:25 pm-2:30 pm

2 stops21h 05m

Seattle/Tacoma Intl

Wed 1/15

5:45 am-9:50 pm

2 stops13h 05m

$318

TorontoSeattle

YTZ - SEA

YTZSEA

Toronto Island

Fri 12/13

4:10 pm-12:10 am

3 stops35h 00m

Seattle/Tacoma Intl

Mon 12/16

9:21 pm-8:05 pm

2 stops19h 44m

$347

TorontoSeattle

YKF - SEA

YKFSEA

Toronto Region of Waterloo Intl

Mon 5/5

6:15 am-12:56 pm

1 stop9h 41m

Seattle/Tacoma Intl

Sun 5/18

1:50 pm-1:10 am

1 stop8h 20m

$433

Flights are sorted by cheapest round-trip flights first.

Deals found on 11/14

Showing 1-10 of 27 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 November.
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 November 8, 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 November 14, 2024.

A simple way to save on the total cost of your ticket is to fly from Toronto to Seattle in the afternoon. If you’re flexible enough to do this you can expect to save up to 10% 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 November 10, 2024.

Travelers seeking maximum savings on their Toronto to Seattle flight should consider departing on Monday afternoons 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 November 14, 2024.

The most flights from YTO to SEA are scheduled on a Thursday (4 on average). You will have fewer flight options on Monday, which is when the least amount of flights are scheduled (3 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 November 14, 2024.
Read reviews from past customers who have flown Alaska Airlines, WestJet 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
9,439 reviews

Comfort

7.9

Boarding

8.2

Overall

8.0

Entertainment

7.1

Crew

8.6

Food

7.2

Reviews

1 / 10

It was the first time I have flown Alaska and I don’t think I can recommend it to others. It was so hot on the plane, food was preordered but I never received it.

Alaska Airlines
8.0
Very good
9,439 reviews
Alaska Airlines
8.0
Very good
9,439 reviews

Comfort

7.9

Boarding

8.2

Overall

8.0

Entertainment

7.1

Crew

8.6

Food

7.2

Reviews

1 / 10

It was the first time I have flown Alaska and I don’t think I can recommend it to others. It was so hot on the plane, food was preordered but I never received it.

Delta
8.0
Very good
8,788 reviews
Alaska Airlines
8.0
Very good
9,439 reviews

Comfort

7.9

Boarding

8.2

Overall

8.0

Entertainment

7.1

Crew

8.6

Food

7.2

Reviews

1 / 10

It was the first time I have flown Alaska and I don’t think I can recommend it to others. It was so hot on the plane, food was preordered but I never received it.

Austrian Airlines
7.6
Good
810 reviews
Alaska Airlines
8.0
Very good
9,439 reviews

Comfort

7.9

Boarding

8.2

Overall

8.0

Entertainment

7.1

Crew

8.6

Food

7.2

Reviews

1 / 10

It was the first time I have flown Alaska and I don’t think I can recommend it to others. It was so hot on the plane, food was preordered but I never received it.

United Airlines
7.4
Good
9,194 reviews
Alaska Airlines
8.0
Very good
9,439 reviews

Comfort

7.9

Boarding

8.2

Overall

8.0

Entertainment

7.1

Crew

8.6

Food

7.2

Reviews

1 / 10

It was the first time I have flown Alaska and I don’t think I can recommend it to others. It was so hot on the plane, food was preordered but I never received it.

WestJet
7.3
Good
2,804 reviews
Alaska Airlines
8.0
Very good
9,439 reviews

Comfort

7.9

Boarding

8.2

Overall

8.0

Entertainment

7.1

Crew

8.6

Food

7.2

Reviews

1 / 10

It was the first time I have flown Alaska and I don’t think I can recommend it to others. It was so hot on the plane, food was preordered but I never received it.

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 $248. Additional round-trip tickets that might be worth considering are offered by Alaska Airlines and WestJet, with the lowest prices starting at $249 and $264, respectively. Users have found that Air Canada is 46% 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 $153. WestJet flights start at $154 while deals on Air Canada start at $158 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 Hawaiian Airlines (97%), Alaska Airlines (92%) and Brussels Airlines (78%).

  • What are the cheapest flights from Toronto to Seattle?

    On average you can expect to pay $569 for a flight from Toronto to Seattle. The cheapest flight overall is $149 while the most popular route, (Toronto Pearson Intl - Seattle/Tacoma Intl) is currently priced at $249.

  • 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

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 2,752,363 searches. Data last updated November 14, 2024.
AirlineCheapestAverageFlexibilityOn-time
WestJetCheapest$163Average$471FlexibilityNo cancel feeOn-time60%
Alaska AirlinesCheapest$248Average$414FlexibilityNo cancel feeOn-time75%
DeltaCheapest$292Average$475FlexibilityNo cancel feeOn-timeN/A
Air CanadaCheapest$317Average$508FlexibilityNo cancel feeOn-time67%
United AirlinesCheapest$329Average$581FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$402Average$695FlexibilityNo cancel feeOn-time71%
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