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Cheap flights from Toronto to Seattle from C$ 217

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 15/3. Fares are subject to change and may not be available on all flights or dates of travel.
YTO — SEA
25 Feb — 4 Mar1
1 adult

The best prices from Toronto to Seattle/Tacoma Intl are usually found in January or February, booked 84 days in advance, depart on a Thursday or Tuesday 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 20 February 2025.

Round-trip from

C$ 332

One-way from

C$ 217

Popular in

May

Cheapest in

January

Average price

C$ 378

Good round-trip deal

C$ 380 or less

Good one-way deal

C$ 260 or less
4/4-9/4
  • 4/4-9/4
  • 2 total stops
  • 30h 56m total
  • Toronto to Seattle
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Alaska Airlines
  • Alaska Airlines
  • 15/3
  • Nonstop
  • 5h 24m total
  • Toronto to Seattle
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Highest demand for flights based on searches. 14% potential increase in price (C$ 139 potential increase over avg. RT price).
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Cheapest flight prices on average. 1% potential price decrease (C$ 16 potential savings vs. average RT price).
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Average for round-trip flights in February 2025
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Price to beat on a round-trip flight from Toronto (YTO) to Seattle/Tacoma Intl.
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Price to beat on a 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 20 February 2025.

Fri 4/48:00 p.m.YYZ - SEA
1 stop15h 43mMultiple Airlines
Wed 9/412:30 p.m.SEA - YYZ
1 stop15h 13mMultiple Airlines
Deal found 20/2C$ 332
Tue 8/47:05 p.m.YYZ - SEA
Nonstop5h 21mUnited Airlines
Tue 15/46:05 a.m.SEA - YYZ
Nonstop4h 55mUnited Airlines
Deal found 19/2C$ 345
Thu 13/34:20 p.m.YYZ - SEA
Nonstop5h 24mAlaska Airlines
Wed 19/37:15 a.m.SEA - YYZ
Nonstop4h 40mAlaska Airlines
Deal found 20/2C$ 352
Fri 4/47:05 p.m.YYZ - SEA
Nonstop5h 21mAir Canada
Sun 6/46:05 a.m.SEA - YYZ
Nonstop4h 55mAir Canada
Deal found 20/2C$ 364
Tue 13/59:00 a.m.YYZ - SEA
2 stops14h 28mWestJet
Tue 20/57:05 a.m.SEA - YYZ
2 stops14h 28mWestJet
Deal found 19/2C$ 384
Tue 8/412:14 p.m.YYZ - SEA
1 stop13h 20mDelta
Mon 14/412:40 a.m.SEA - YYZ
1 stop7h 54mDelta
Deal found 19/2C$ 389
Sun 23/312:35 p.m.YYZ - SEA
1 stop12h 30mAmerican Airlines
Sat 29/311:14 p.m.SEA - YYZ
1 stop20h 30mAmerican Airlines
Deal found 20/2C$ 398
Wed 2/410:00 a.m.YTZ - SEA
3 stops25h 43mMultiple Airlines
Tue 15/49:06 p.m.SEA - YTZ
2 stops18h 47mMultiple Airlines
Deal found 20/2C$ 416
Mon 28/46:00 a.m.YHM - SEA
1 stop9h 58mWestJet
Sat 3/51:50 p.m.SEA - YHM
1 stop7h 51mWestJet
Deal found 20/2C$ 425
Sun 18/56:00 a.m.YKF - SEA
1 stop9h 58mWestJet
Sun 25/57:05 a.m.SEA - YKF
1 stop14h 41mWestJet
Deal found 19/2C$ 470
Sun 6/49:05 p.m.YKF - SEA
2 stops15h 55mMultiple Airlines
Sun 13/43:15 p.m.SEA - YKF
1 stop7h 01mMultiple Airlines
Deal found 20/2C$ 484
Thu 22/512:25 p.m.YTZ - SEA
1 stop10h 12mAir Canada
Sun 25/57:20 a.m.SEA - YTZ
1 stop9h 30mAir Canada
Deal found 20/2C$ 518

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 629,999 searches. Data last updated 20 February 2025.

Fly from

Toronto

Fly to

Seattle

Route

Depart

Return

Price

TorontoSeattle

YYZ - SEA

YYZSEA

Toronto Pearson Intl

Fri 4/4

8:00 p.m.-8:43 a.m.

1 stop15h 43m

Seattle/Tacoma Intl

Wed 9/4

12:30 p.m.-6:43 a.m.

1 stop15h 13m

C$ 332

TorontoSeattle

YYZ - SEA

YYZSEA

Toronto Pearson Intl

Tue 8/4

7:05 p.m.-9:26 p.m.

Nonstop5h 21m

Seattle/Tacoma Intl

Tue 15/4

6:05 a.m.-2:00 p.m.

Nonstop4h 55m

C$ 345

TorontoSeattle

YYZ - SEA

YYZSEA

Toronto Pearson Intl

Thu 13/3

4:20 p.m.-6:44 p.m.

Nonstop5h 24m

Seattle/Tacoma Intl

Wed 19/3

7:15 a.m.-2:55 p.m.

Nonstop4h 40m

C$ 352

TorontoSeattle

YYZ - SEA

YYZSEA

Toronto Pearson Intl

Fri 4/4

7:05 p.m.-9:26 p.m.

Nonstop5h 21m

Seattle/Tacoma Intl

Sun 6/4

6:05 a.m.-2:00 p.m.

Nonstop4h 55m

C$ 364

TorontoSeattle

YYZ - SEA

YYZSEA

Toronto Pearson Intl

Thu 1/5

9:00 a.m.-8:28 p.m.

2 stops14h 28m

Seattle/Tacoma Intl

Tue 6/5

2:05 p.m.-12:24 a.m.

1 stop7h 19m

C$ 372

TorontoSeattle

YYZ - SEA

YYZSEA

Toronto Pearson Intl

Tue 8/4

12:14 p.m.-10:34 p.m.

1 stop13h 20m

Seattle/Tacoma Intl

Mon 14/4

12:40 a.m.-11:34 a.m.

1 stop7h 54m

C$ 389

TorontoSeattle

YYZ - SEA

YYZSEA

Toronto Pearson Intl

Sun 23/3

12:35 p.m.-10:05 p.m.

1 stop12h 30m

Seattle/Tacoma Intl

Sat 29/3

11:14 p.m.-10:44 p.m.

1 stop20h 30m

C$ 398

TorontoSeattle

YTZ - SEA

YTZSEA

Toronto Island

Wed 2/4

10:00 a.m.-8:43 a.m.

3 stops25h 43m

Seattle/Tacoma Intl

Tue 15/4

9:06 p.m.-6:53 p.m.

2 stops18h 47m

C$ 416

HamiltonSeattle

YHM - SEA

YHMSEA

Hamilton

Mon 28/4

6:00 a.m.-12:58 p.m.

1 stop9h 58m

Seattle/Tacoma Intl

Sat 3/5

1:50 p.m.-12:41 a.m.

1 stop7h 51m

C$ 425

TorontoSeattle

YKF - SEA

YKFSEA

Toronto Region of Waterloo Intl

Sun 18/5

6:00 a.m.-12:58 p.m.

1 stop9h 58m

Seattle/Tacoma Intl

Sun 25/5

7:05 a.m.-12:46 a.m.

1 stop14h 41m

C$ 470

Flights are sorted by cheapest round-trip flights first.

Deals found on 20/2

Showing 1-10 of 26 results
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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 14 February 2025.

Booking 84 days in advance of your planned departure date is, on average, the best time to get cheap flights from Toronto to Seattle. 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 Toronto to Seattle?

Currently, January is the cheapest month in which you can book a flight from Toronto to Seattle (average of C$ 262). Flying from Toronto to Seattle in April is currently the most expensive (average of C$ 382). 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 20 February 2025.

A simple way to save on the total cost of your ticket is to fly from Toronto to Seattle at noon. If you’re flexible enough to do this you can expect to save up to 30% 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 16 December 2024.

Travelers seeking maximum savings on their Toronto to Seattle flight should consider departing on Tuesday at noon when fares are most often at their lowest. Saturday mornings 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 20 February 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 18.0 - 168.0 mm per month. November is typically the wettest month, when rainfall can reach 168.0 mm. July is typically the driest time to visit Seattle when rainfall is around 18.0 mm.

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 19.0 C. Travellers hoping to avoid the cold should look outside of December, when temperatures are typically at their lowest (around 5.0 C).

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 20 February 2025.
Get a feel of what it's like to fly with Alaska Airlines, Delta and United Airlines from Toronto to Seattle by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Alaska Airlines
8.0
Very good
9,697 reviews
Check prices

Comfort

7.9

Food

7.1

Boarding

8.2

Overall

8.0

Crew

8.5

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
9,697 reviews
Alaska Airlines
8.0
Very good
9,697 reviews
Check prices

Comfort

7.9

Food

7.1

Boarding

8.2

Overall

8.0

Crew

8.5

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
8,219 reviews
Alaska Airlines
8.0
Very good
9,697 reviews
Check prices

Comfort

7.9

Food

7.1

Boarding

8.2

Overall

8.0

Crew

8.5

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
8,765 reviews
Alaska Airlines
8.0
Very good
9,697 reviews
Check prices

Comfort

7.9

Food

7.1

Boarding

8.2

Overall

8.0

Crew

8.5

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
9,697 reviews
Check prices

Comfort

7.9

Food

7.1

Boarding

8.2

Overall

8.0

Crew

8.5

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

WestJet
7.2
Good
2,801 reviews
Alaska Airlines
8.0
Very good
9,697 reviews
Check prices

Comfort

7.9

Food

7.1

Boarding

8.2

Overall

8.0

Crew

8.5

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?

    For a flight from Toronto to Seattle, you will be flying into Seattle/Tacoma Intl. Seattle/Tacoma Intl (SEA) is just 18.4 km from the centre of the city. Seattle/Tacoma Intl is the only Seattle airport and it handles 3 inbound flights from Toronto per day. 6 airlines have flights to Seattle/Tacoma Intl from Toronto on a regular basis.

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

    According to our current data, United Airlines (C$ 345), Alaska Airlines (C$ 352), and Air Canada (C$ 364) offers the cheapest pricing from Toronto to Seattle. These flights start at 39% lower than the current average price 3 months from now.

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

    For one-way options, check prices for Alaska Airlines. According to our data, you can fly for as low as C$ 217. Users have also found prices from C$ 220 and C$ 233 on WestJet and United Airlines, respectively.

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

    While some choose either Toronto Region of Waterloo Intl - Seattle/Tacoma Intl or Hamilton - Seattle/Tacoma Intl, Toronto Pearson Intl - Seattle/Tacoma Intl is the most popular 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?

    Looking at all options, your cheapest flight can be booked for C$ 210. While the most popular route (Toronto Pearson Intl - Seattle/Tacoma Intl) can be booked for C$ 270 on average our data indicates C$ 1,262 when flying from Toronto to Seattle.

  • 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 C$ 262). Flying from Toronto to Seattle in April is currently the most expensive (average of C$ 382). 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

Travelling to a place near Toronto?

Book flights to Toronto if you plan to visit one of these locations
SeaTac
Tukwila
Marysville
Bothell
Leavenworth
Tacoma
Olympia
Lynnwood

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Fly from Toronto to Seattle on these airlines

Choose from the following airlines for your flight from Toronto to Seattle. Flights are based on user searches made on Cheapflights and were last updated on 20 February 2025.
Air Canada flights from Toronto to Seattle/Tacoma Intl
WestJet flights from Toronto to Seattle/Tacoma Intl
United Airlines flights from Toronto to Seattle/Tacoma Intl

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 629,999 searches. Data last updated 20 February 2025.
AirlineCheapestAverageFlexibilityOn-time
WestJetCheapestC$ 304AverageC$ 529FlexibilityNo cancel feeOn-time60%
Search WestJet flights
Alaska AirlinesCheapestC$ 338AverageC$ 564FlexibilityNo cancel feeOn-time75%
Search Alaska Airlines flights
Air CanadaCheapestC$ 376AverageC$ 689FlexibilityNo cancel feeOn-time67%
Search Air Canada flights
United AirlinesCheapestC$ 379AverageC$ 721FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
DeltaCheapestC$ 415AverageC$ 618FlexibilityNo cancel feeOn-timeN/A
Search Delta flights
American AirlinesCheapestC$ 454AverageC$ 656FlexibilityNo cancel feeOn-time71%
Search American Airlines flights

Fly with Cheapflights

Find the best flight deals on Cheapflights, where travelers can enjoy low prices and a wide availability of flights to their desired destinations.

How does Cheapflights help users find flights from Toronto to Seattle?

Deals for Toronto to Seattle flights are sourced from 900+ travel sites when you use Cheapflights. When all flight results come back, Cheapflights lets you sort and filter flights using different criteria to choose better, like price, airport, cabin class, and plenty of other options.

Why should you use Cheapflights to find cheap flight tickets from Toronto to Seattle?

Millions of users choose and trust Cheapflights to book the best flight deals from Toronto to Seattle for free. We help you search and compare prices from hundreds of airlines for the right flight just for you.

Can Cheapflights find flights from Toronto to Seattle with no change fees?

Users can book flights with no change fees policies with our dedicated filters. Book flights from Toronto to Seattle flexibly with Cheapflights today.

Can Cheapflights notify me if prices for flights from Toronto to Seattle become cheaper?

Yes, Cheapflights offers price alerts on Toronto to Seattle flights so you can book your travel at the perfect time. Price Alerts can be enabled by clicking the bell icon next to the flight deals above and providing your email address where you want to receive the alerts.

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