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Cheap flights from Toronto Island Airport to Seattle from C$ 238

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 4/6. Fares are subject to change and may not be available on all flights or dates of travel.
YTZ — SEA
4 May — 11 May1
1 adult

Cheap flight deals from Toronto Island to Seattle

Discover tips and strategies to find the most affordable flight options for your journey from Toronto Island (YTZ) 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 29 April 2025.

Round-trip from

C$ 443

One-way from

C$ 238

Popular in

July

Cheapest in

February

Average price

C$ 548
Air Canada
  • Air Canada
  • 21/5-27/5
  • 2 total stops
  • 21h 27m total
  • Toronto to Seattle
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Air Canada
  • Air Canada
  • 4/6
  • 1 total stop
  • 10h 12m total
  • Toronto to Seattle
Search Deals
Highest demand for flights based on searches. 10% potential increase in price (C$ 82 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 1% potential price decrease (C$ 14 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in April 2025
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Find flight deals from Toronto Island to Seattle

Cheapest flights from Toronto Island to Seattle
Explore the most affordable flight options available from Toronto Island to Seattle. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 29 April 2025.

Sun 25/512:25 p.m.YTZ - SEA
1 stop10h 12mAir Canada
Wed 4/67:20 a.m.SEA - YTZ
1 stop11h 15mAir Canada
Deal found 28/4C$ 411
Tue 12/87:55 a.m.YTZ - SEA
1 stop18h 29mMultiple Airlines
Tue 19/85:54 p.m.SEA - YTZ
1 stop23h 08mMultiple Airlines
Deal found 29/4C$ 556

Cheapflights Fare Finder

Customize your flight search to find flights from Toronto Island 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 29 April 2025.
Use the filters below to find and compare flights from Toronto Island Airport to Seattle that are best for you.

Fly from

Toronto Island

Fly to

Seattle

Route

Depart

Return

Price

TorontoSeattle

YTZ - SEA

YTZSEA

Toronto Island

Sun 25/5

12:25 p.m.-7:37 p.m.

1 stop10h 12m

Seattle/Tacoma Intl

Wed 4/6

7:20 a.m.-9:35 p.m.

1 stop11h 15m

C$ 411

TorontoSeattle

YTZ - SEA

YTZSEA

Toronto Island

Tue 12/8

7:55 a.m.-11:24 p.m.

1 stop18h 29m

Seattle/Tacoma Intl

Tue 19/8

5:54 p.m.-8:02 p.m.

1 stop23h 08m

C$ 556

TorontoSeattle

YTZ - SEA

YTZSEA

Toronto Island

Wed 4/6

12:25 p.m.-7:37 p.m.

1 stop10h 12m

C$ 238

TorontoSeattle

YTZ - SEA

YTZSEA

Toronto Island

Mon 14/7

3:35 p.m.-8:37 a.m.

1 stop20h 02m

C$ 257

Flights are sorted by cheapest round-trip flights first.

Deals found on 29/4

Best time to book a flight from Toronto Island to Seattle

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

Cheapflights Insights

Everything you need to know about your flight from Toronto Island Airport to Seattle

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 29 April 2025.
Air Canada
7.0
Good
9,242 reviews
Check prices

Boarding

7.3

Comfort

7.0

Overall

7.0

Crew

7.8

Entertainment

6.8

Food

6.3

Reviews

1 / 20
4.0
Okay

Anonymous,Oct 2024

YYZ - SJO

One of us is celiac and there are no food options on any of the flights from Montreal to Toronto to San Jose. Least co operative airline we have travelled with and just a bag of pretzels for a 5 hour flight, pretty cheap and disgusting. In future, if there are other airline options, we will choose the others.
Air Canada
7.0
Good
9,242 reviews
Air Canada
7.0
Good
9,242 reviews
Check prices

Boarding

7.3

Comfort

7.0

Overall

7.0

Crew

7.8

Entertainment

6.8

Food

6.3

Reviews

1 / 20
4.0
Okay

Anonymous,Oct 2024

YYZ - SJO

One of us is celiac and there are no food options on any of the flights from Montreal to Toronto to San Jose. Least co operative airline we have travelled with and just a bag of pretzels for a 5 hour flight, pretty cheap and disgusting. In future, if there are other airline options, we will choose the others.

Related info for your journey

Find useful and relevant information for your journey from Toronto Island 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 Island?

    Seattle/Tacoma Intl (SEA), located 18.4 km from the city centre, is the airport you fly into when you book flights from Toronto Island to Seattle. 0 airlines have flights to Seattle/Tacoma Intl from Toronto Island on a regular basis. Booking flights from Toronto Island to Seattle/Tacoma Intl should not be difficult; the airport handles an average of 0 inbound flights from Toronto Island per day.

  • What is the cheapest airline to fly from Toronto Island Airport to Seattle round-trip?

    Cheapflights users have booked flights from Toronto Island Airport to Seattle round-trip from C$ 443.

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

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

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

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

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

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

    Currently, January is the cheapest month in which you can book a flight from Toronto Island Airport to Seattle (average of C$ 261). Flying from Toronto Island Airport to Seattle in December is currently the most expensive (average of C$ 353). 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 Island Airport?

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

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