HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Toronto

$122+ Cheap flights from Seattle (SEA) to Toronto (YTO)

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 1/21. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — YTO
Nov 25 — Dec 21
Mon 11/25
Mon 12/2
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Seattle to Toronto 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 Seattle/Tacoma Intl to Toronto are usually found in January or September, booked 68 days in advance, depart on a Wednesday or Tuesday and return on a Tuesday

Cheap flight deals from Seattle to Toronto

Discover tips and strategies to find the most affordable flight options for your journey from Seattle (SEA) to Toronto (YTO). 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 20, 2024.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Popular in

March

Cheapest in

January

Round-trip from

$257
(Alaska Airlines)

One-way from

$122
(Trip.com)
Provider with most accurate pricing for Seattle/Tacoma Intl-Toronto (YTO) flight deals.
Search Deals
Provider most trusted by Cheapflights users for Seattle/Tacoma Intl-Toronto (YTO) flights.
Search Deals
High demand for flights, 22% potential price rise
Search Deals
Best time to find cheap flights, 43% potential price drop
Search Deals
From Seattle/Tacoma Intl to Toronto (YTO)
Search Deals
One-way flight from Seattle/Tacoma Intl to Toronto (YTO)
Search Deals

Find flight deals from Seattle to Toronto

Cheapest flights from Seattle to Toronto
Explore the most affordable flight options available from Seattle to Toronto. Find the lowest fares from popular airlines and budget airlines, with prices last updated on November 20, 2024.

This Alaska Airlines deal was found by Cheapflights users on 11/19. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/107:22 amSEA - YYZ
Nonstop4h 33mAlaska Airlines
Thu 12/124:20 pmYYZ - SEA
Nonstop5h 19mAlaska Airlines
Deal found 11/19$276
This Expedia deal was found by Cheapflights users on 11/19. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/107:22 amSEA - YYZ
Nonstop4h 33mMultiple Airlines
Thu 12/127:55 amYYZ - SEA
1 stop9h 26mMultiple Airlines
Deal found 11/19$280
This Justfly.com deal was found by Cheapflights users on 11/20. 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 Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/253:15 pmSEA - YYZ
2 stops11h 45mWestJet
Tue 1/147:55 amYYZ - SEA
1 stop9h 26mWestJet
Deal found 11/20$285
This United Airlines deal was found by Cheapflights users on 11/20. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/256:05 amSEA - YYZ
Nonstop4h 45mUnited Airlines
Tue 1/147:05 pmYYZ - SEA
Nonstop5h 25mUnited Airlines
Deal found 11/20$304
This Delta deal was found by Cheapflights users on 11/20. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/912:50 amSEA - YYZ
1 stop9h 51mDelta
Thu 12/126:15 pmYYZ - SEA
1 stop9h 06mDelta
Deal found 11/20$316
This Air Canada deal was found by Cheapflights users on 11/19. 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.
Mon 12/306:05 amSEA - YYZ
Nonstop4h 45mAir Canada
Tue 1/711:00 pmYYZ - SEA
1 stop13h 50mAir Canada
Deal found 11/19$328
This American Airlines deal was found by Cheapflights users on 11/19. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/912:15 amSEA - YYZ
1 stop7h 41mAmerican Airlines
Fri 12/136:20 pmYYZ - SEA
1 stop7h 55mAmerican Airlines
Deal found 11/19$329
This Trip.com deal was found by Cheapflights users on 11/20. 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.
Wed 12/43:15 pmSEA - YKF
1 stop7h 01mWestJet
Sat 12/76:30 amYKF - SEA
1 stop11h 08mWestJet
Deal found 11/20$353
This Mytrip deal was found by Cheapflights users on 11/19. 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.
Mon 12/99:21 pmSEA - YTZ
2 stops19h 44mMultiple Airlines
Fri 12/134:10 pmYTZ - SEA
3 stops35h 00mMultiple Airlines
Deal found 11/19$390
This Gotogate deal was found by Cheapflights users on 11/19. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/125:45 amSEA - YTZ
2 stops13h 05mAir Canada
Sun 12/158:25 pmYTZ - SEA
2 stops21h 00mAir Canada
Deal found 11/19$529
This Travelocity deal was found by Cheapflights users on 11/19. 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 Travelocity is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/43:15 pmSEA - YKF
1 stop7h 01mMultiple Airlines
Sat 12/76:30 amYKF - SEA
1 stop8h 57mMultiple Airlines
Deal found 11/19$529
This Kiwi.com deal was found by Cheapflights users on 11/19. 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.
Wed 12/113:15 pmSEA - YHM
1 stop22h 58mMultiple Airlines
Sun 12/157:05 pmYHM - SEA
2 stops28h 45mMultiple Airlines
Deal found 11/19$560

Find flights from Seattle to Toronto within your budget

Customize your flight search to find flights from Seattle to Toronto 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 2,629,791 searches. Data last updated November 20, 2024.

Fly from

Any airport

Fly to

Any airport

Route

Depart

Return

Price

SeattleToronto

SEA - YYZ

SEAYYZ

Seattle/Tacoma Intl

Fri 1/31

7:27 am-3:05 pm

Nonstop4h 38m

Toronto Pearson Intl

Mon 2/3

4:20 pm-6:43 pm

Nonstop5h 23m

$257

SeattleToronto

SEA - YYZ

SEAYYZ

Seattle/Tacoma Intl

Fri 1/31

7:27 am-3:05 pm

Nonstop4h 38m

Toronto Pearson Intl

Mon 2/3

7:55 am-2:21 pm

1 stop9h 26m

$259

SeattleToronto

SEA - YYZ

SEAYYZ

Seattle/Tacoma Intl

Fri 1/31

3:15 pm-5:58 am

2 stops11h 43m

Toronto Pearson Intl

Mon 2/3

8:00 am-2:21 pm

1 stop9h 21m

$261

SeattleToronto

SEA - YYZ

SEAYYZ

Seattle/Tacoma Intl

Wed 12/25

6:05 am-1:50 pm

Nonstop4h 45m

Toronto Pearson Intl

Tue 1/14

7:05 pm-9:30 pm

Nonstop5h 25m

$304

SeattleToronto

SEA - YYZ

SEAYYZ

Seattle/Tacoma Intl

Tue 3/4

6:05 am-1:50 pm

Nonstop4h 45m

Toronto Pearson Intl

Fri 3/7

7:05 pm-9:30 pm

Nonstop5h 25m

$305

SeattleToronto

SEA - YYZ

SEAYYZ

Seattle/Tacoma Intl

Mon 12/9

12:50 am-1:41 pm

1 stop9h 51m

Toronto Pearson Intl

Thu 12/12

6:15 pm-12:21 am

1 stop9h 06m

$316

SeattleToronto

SEA - YYZ

SEAYYZ

Seattle/Tacoma Intl

Thu 1/30

12:45 am-4:15 pm

1 stop12h 30m

Toronto Pearson Intl

Mon 2/3

5:10 pm-11:11 pm

1 stop9h 01m

$329

SeattleToronto

SEA - YTZ

SEAYTZ

Seattle/Tacoma Intl

Thu 1/9

5:45 am-8:43 pm

2 stops11h 58m

Toronto Island

Wed 1/15

8:25 pm-2:30 pm

2 stops21h 05m

$350

SeattleToronto

SEA - YKF

SEAYKF

Seattle/Tacoma Intl

Wed 12/4

3:15 pm-1:16 am

1 stop7h 01m

Toronto Region of Waterloo Intl

Sat 12/7

6:30 am-2:38 pm

1 stop11h 08m

$353

SeattleToronto

SEA - YTZ

SEAYTZ

Seattle/Tacoma Intl

Mon 12/9

9:21 pm-8:05 pm

2 stops19h 44m

Toronto Island

Fri 12/13

4:10 pm-12:10 am

3 stops35h 00m

$390

Flights are sorted by cheapest round-trip flights first.

Deals found on 11/20

Showing 1-10 of 28 results
1
2
3

Compare providers for flights from Seattle to Toronto

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 Seattle to Toronto in November.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars
eDreamsPrice Accuracy3 starsTrust Score*3 stars
MytripPrice Accuracy3 starsTrust Score*3 stars
CheapfaremartPrice Accuracy-Trust Score*1 star
SmartFaresPrice Accuracy2 starsTrust Score*3 stars
CheapflightsfaresPrice Accuracy3 starsTrust Score*1 star

*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 Seattle-Toronto flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Seattle-Toronto flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Seattle-Toronto flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Seattle-Toronto 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 Seattle-Toronto 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 Seattle to Toronto

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

Travel insights for flights from Seattle to Toronto

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

How far ahead should I book a flight from Seattle to Toronto?

Use this chart to determine the optimal time to book a round-trip flight from Seattle to Toronto. Price data was last updated on November 15, 2024.

Booking 68 days in advance of your planned departure date is, on average, the best time to get cheap flights from Seattle to Toronto. The general trend is that the closer you book to the departure date, the more expensive your flight will be.

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

Currently, January is the cheapest month in which you can book a flight from Seattle to Toronto (average of $242). Flying from Seattle to Toronto in July is currently the most expensive (average of $359). 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 SEA to YTO?

Find hourly flight availability from Seattle to Toronto. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated November 20, 2024.

A simple way to save on the total cost of your ticket is to fly from Seattle to Toronto in the afternoon. If you’re flexible enough to do this you can expect to save up to 49% on your trip compared to booking a flight in the morning.

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

Use this chart to determine the cheapest time to fly round-trip from Seattle to Toronto. Price data was last updated on November 18, 2024.

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

Weekly flight availability from Seattle to Toronto

Explore weekly flight availability from Seattle to Toronto. 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 20, 2024.

The most flights from SEA to YTO are scheduled on a Monday (5 on average). You will have fewer flight options on Thursday, which is when the least amount of flights are scheduled (1 on average).

Rainfall in Toronto by month

Plan your trip to Toronto by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Toronto ranges from 2.0 - 3.3 inches per month. June is typically the wettest month, when rainfall can reach 3.3 in. February is typically the driest time to visit Toronto when rainfall is around 2.0 in.

Temperature in Toronto by month

Plan your trip to Toronto by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Toronto, 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 69.8 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 21.2 F).

Reviews of airlines servicing Toronto

Get insights into the airlines that provide service to Toronto. 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 Toronto. Reviews last updated November 20, 2024.
Peruse reviews from past customers who have flown with Air Canada, American Airlines and Alaska Airlines from Seattle to Toronto to help guide your decision. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Alaska Airlines
8.0
Very good
9,461 reviews

Food

7.2

Comfort

7.9

Entertainment

7.1

Overall

8.0

Boarding

8.2

Crew

8.5

Reviews

1 / 10

Seats were not that comfy especially for someone with big hips 😥

Alaska Airlines
8.0
Very good
9,461 reviews
Alaska Airlines
8.0
Very good
9,461 reviews

Food

7.2

Comfort

7.9

Entertainment

7.1

Overall

8.0

Boarding

8.2

Crew

8.5

Reviews

1 / 10

Seats were not that comfy especially for someone with big hips 😥

Delta
8.0
Very good
8,756 reviews
Alaska Airlines
8.0
Very good
9,461 reviews

Food

7.2

Comfort

7.9

Entertainment

7.1

Overall

8.0

Boarding

8.2

Crew

8.5

Reviews

1 / 10

Seats were not that comfy especially for someone with big hips 😥

United Airlines
7.4
Good
9,171 reviews
Alaska Airlines
8.0
Very good
9,461 reviews

Food

7.2

Comfort

7.9

Entertainment

7.1

Overall

8.0

Boarding

8.2

Crew

8.5

Reviews

1 / 10

Seats were not that comfy especially for someone with big hips 😥

WestJet
7.3
Good
2,811 reviews
Alaska Airlines
8.0
Very good
9,461 reviews

Food

7.2

Comfort

7.9

Entertainment

7.1

Overall

8.0

Boarding

8.2

Crew

8.5

Reviews

1 / 10

Seats were not that comfy especially for someone with big hips 😥

American Airlines
7.2
Good
10,000 reviews
Alaska Airlines
8.0
Very good
9,461 reviews

Food

7.2

Comfort

7.9

Entertainment

7.1

Overall

8.0

Boarding

8.2

Crew

8.5

Reviews

1 / 10

Seats were not that comfy especially for someone with big hips 😥

Related info for your journey

Find useful and relevant information for your journey from Seattle to Toronto. 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 from for flights from Seattle to Toronto?

    Seattle/Tacoma Intl (SEA) is the airport you will fly out of if you book a flight from Seattle to Toronto. You should not have trouble finding flights to Toronto from Seattle/Tacoma Intl; the airport handles an average of 3 outbound flights to Toronto per day. You should also have plenty of airline options to choose from since 6 airlines have flights from the Seattle airport to Toronto. It is only a 11.4 mi journey to Seattle/Tacoma Intl (SEA) from Seattle’s city center.

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

    Currently priced at $257, Alaska Airlines will fly you from Seattle to Toronto and back. In addition to Alaska Airlines, many other airlines offer competitively priced options for your trip. Search Cheapflights for deals from WestJet and United Airlines - these airlines can fly you to your destination from $261 and $304, respectively. You may be able to fly from Seattle to Toronto for 49% less than the average price by searching for these airlines.

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

    One-way options have recently been found by users for as low as $122 on WestJet. Other airlines that offer cheap prices include United Airlines from $128 and Delta from $132 one-way.

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

    When deciding which route to take from Seattle to Toronto consider Seattle/Tacoma Intl - Toronto Pearson Intl, Seattle/Tacoma Intl - Toronto Island or Seattle/Tacoma Intl - Toronto Region of Waterloo Intl as they are the most popular.

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

    Consider Alaska Airlines (75%), United Airlines (71%) or Hawaiian Airlines (70%) when booking your flight. These represent the most reliable airlines when flying from Seattle to Toronto.

  • What are the cheapest flights from Seattle to Toronto?

    On average you can expect to pay $535 for a flight from Seattle to Toronto. The cheapest flight overall is $109 while the most popular route, (Seattle/Tacoma Intl - Toronto Pearson Intl) is currently priced at $276.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Seattle to Toronto 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 Seattle to Toronto?

    Currently, January is the cheapest month in which you can book a flight from Seattle to Toronto (average of $242). Flying from Seattle to Toronto in July is currently the most expensive (average of $359). 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

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

Alternative routes for Seattle to Toronto

See prices for flight routes from nearby airports that may be better suited for you.
Seattle to Pearson Intl flights
Seattle to Pierre Elliott Trudeau Intl flights
Portland to Pearson Intl flights
Seattle to Region of Waterloo Intl flights
Seattle to Toronto Island flights
Portland to Pierre Elliott Trudeau Intl flights
Seattle to Ottawa flights
Seattle to Hamilton flights
Spokane to Pearson Intl flights
Seattle to London flights
Portland to Toronto Island flights
Portland to Ottawa flights
Pasco to Pearson Intl flights
Bellingham to Pearson Intl flights
Pasco to Pierre Elliott Trudeau Intl flights
Seattle to Timmins flights
Seattle to Thunder Bay flights
Walla Walla to Pierre Elliott Trudeau Intl flights
Spokane to Hamilton flights
Bellingham to Pierre Elliott Trudeau Intl flights
Bellingham to Ottawa flights

Top 6 airlines flying from Seattle to Toronto

Discover the top 6 airlines that operate flights from Seattle to Toronto. 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 2,629,791 searches. Data last updated November 20, 2024.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$172Average$528FlexibilityNo cancel feeOn-time69%
Air CanadaCheapest$178Average$589FlexibilityNo cancel feeOn-time67%
WestJetCheapest$235Average$528FlexibilityNo cancel feeOn-time60%
Alaska AirlinesCheapest$248Average$516FlexibilityNo cancel feeOn-time75%
American AirlinesCheapest$464Average$844FlexibilityNo cancel feeOn-time71%
DeltaCheapest$474Average$593FlexibilityNo cancel feeOn-timeN/A
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.
View all available airlines