Cheap Flights from Toronto to Seattle

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Flight deals from Toronto to Seattle

Looking for a cheap last-minute deal or the best return flight from Toronto to Seattle? If you want to travel next month, return fares start from $604. Find the lowest prices on one-way and return tickets right here.

Seattle.$500 per passenger.Departing Fri, 6 Nov, returning Wed, 11 Nov.Return flight with WestJet.Outbound indirect flight with WestJet, departs from Toronto Pearson International on Fri, 6 Nov, arriving in Seattle / Tacoma International.Inbound indirect flight with WestJet, departs from Seattle / Tacoma International on Wed, 11 Nov, arriving in Toronto Pearson International.Price includes taxes and charges.From $500, select.

Seattle.$538 per passenger.Departing Wed, 9 Sep, returning Sun, 20 Sep.Return flight with WestJet.Outbound indirect flight with WestJet, departs from Toronto Pearson International on Wed, 9 Sep, arriving in Seattle / Tacoma International.Inbound indirect flight with WestJet, departs from Seattle / Tacoma International on Sun, 20 Sep, arriving in Toronto Pearson International.Price includes taxes and charges.From $538, select.

Seattle.$560 per passenger.Departing Mon, 12 Oct, returning Mon, 19 Oct.Return flight with WestJet.Outbound indirect flight with WestJet, departs from Toronto Pearson International on Mon, 12 Oct, arriving in Seattle / Tacoma International.Inbound indirect flight with WestJet, departs from Seattle / Tacoma International on Mon, 19 Oct, arriving in Toronto Pearson International.Price includes taxes and charges.From $560, select.

Seattle.$561 per passenger.Departing Mon, 7 Dec, returning Fri, 11 Dec.Return flight with WestJet.Outbound indirect flight with WestJet, departs from Toronto Pearson International on Mon, 7 Dec, arriving in Seattle / Tacoma International.Inbound indirect flight with WestJet, departs from Seattle / Tacoma International on Fri, 11 Dec, arriving in Toronto Pearson International.Price includes taxes and charges.From $561, select.

Seattle.$573 per passenger.Departing Thu, 24 Sep, returning Thu, 1 Oct.Return flight with WestJet.Outbound indirect flight with WestJet, departs from Toronto Pearson International on Thu, 24 Sep, arriving in Seattle / Tacoma International.Inbound indirect flight with WestJet, departs from Seattle / Tacoma International on Thu, 1 Oct, arriving in Toronto Pearson International.Price includes taxes and charges.From $573, select.

Seattle.$584 per passenger.Departing Mon, 5 Oct, returning Fri, 20 Nov.Return flight with WestJet.Outbound indirect flight with WestJet, departs from Toronto Pearson International on Mon, 5 Oct, arriving in Seattle / Tacoma International.Inbound indirect flight with WestJet, departs from Seattle / Tacoma International on Fri, 20 Nov, arriving in Toronto Pearson International.Price includes taxes and charges.From $584, select.

Seattle.$594 per passenger.Departing Sun, 1 Nov, returning Sun, 6 Dec.Return flight with WestJet.Outbound indirect flight with WestJet, departs from Toronto Pearson International on Sun, 1 Nov, arriving in Seattle / Tacoma International.Inbound indirect flight with WestJet, departs from Seattle / Tacoma International on Sun, 6 Dec, arriving in Toronto Pearson International.Price includes taxes and charges.From $594, select.

Seattle.$604 per passenger.Departing Fri, 14 Aug, returning Fri, 21 Aug.Return flight with WestJet.Outbound indirect flight with WestJet, departs from Kitchener / Waterloo on Fri, 14 Aug, arriving in Seattle / Tacoma International.Inbound indirect flight with WestJet, departs from Seattle / Tacoma International on Fri, 21 Aug, arriving in Toronto Pearson International.Price includes taxes and charges.From $604, select.

Seattle.$617 per passenger.Departing Thu, 15 Oct, returning Fri, 23 Oct.Return flight with Air Canada.Outbound direct flight with Air Canada departs from Toronto Pearson International on Thu, 15 Oct, arriving in Seattle / Tacoma International.Inbound direct flight with Air Canada departs from Seattle / Tacoma International on Fri, 23 Oct, arriving in Toronto Pearson International.Price includes taxes and charges.From $617, select.

Seattle.$620 per passenger.Departing Wed, 17 Feb, returning Sun, 21 Feb.Return flight with Air Canada.Outbound direct flight with Air Canada departs from Toronto Pearson International on Wed, 17 Feb, arriving in Seattle / Tacoma International.Inbound direct flight with Air Canada departs from Seattle / Tacoma International on Sun, 21 Feb, arriving in Toronto Pearson International.Price includes taxes and charges.From $620, select.

Seattle.$628 per passenger.Departing Wed, 11 Nov, returning Wed, 18 Nov.Return flight with Air Canada.Outbound direct flight with Air Canada departs from Toronto Pearson International on Wed, 11 Nov, arriving in Seattle / Tacoma International.Inbound direct flight with Air Canada departs from Seattle / Tacoma International on Wed, 18 Nov, arriving in Toronto Pearson International.Price includes taxes and charges.From $628, select.

Seattle.$631 per passenger.Departing Thu, 26 Nov, returning Tue, 1 Dec.Return flight with Air Canada.Outbound direct flight with Air Canada departs from Toronto Pearson International on Thu, 26 Nov, arriving in Seattle / Tacoma International.Inbound direct flight with Air Canada departs from Seattle / Tacoma International on Tue, 1 Dec, arriving in Toronto Pearson International.Price includes taxes and charges.From $631, select.

Seattle.$633 per passenger.Departing Wed, 30 Sep, returning Tue, 6 Oct.Return flight with Air Canada.Outbound direct flight with Air Canada departs from Toronto Pearson International on Wed, 30 Sep, arriving in Seattle / Tacoma International.Inbound direct flight with Air Canada departs from Seattle / Tacoma International on Tue, 6 Oct, arriving in Toronto Pearson International.Price includes taxes and charges.From $633, select.

Seattle.$637 per passenger.Departing Thu, 20 Aug, returning Sat, 12 Sep.Return flight with WestJet.Outbound indirect flight with WestJet, departs from Toronto Pearson International on Thu, 20 Aug, arriving in Seattle / Tacoma International.Inbound indirect flight with WestJet, departs from Seattle / Tacoma International on Sat, 12 Sep, arriving in Toronto Pearson International.Price includes taxes and charges.From $637, select.

Seattle.$639 per passenger.Departing Sat, 10 Oct, returning Mon, 14 Dec.Return flight with WestJet.Outbound indirect flight with WestJet, departs from Toronto Pearson International on Sat, 10 Oct, arriving in Seattle / Tacoma International.Inbound indirect flight with WestJet, departs from Seattle / Tacoma International on Mon, 14 Dec, arriving in Toronto Pearson International.Price includes taxes and charges.From $639, select.

Seattle.$648 per passenger.Departing Thu, 7 Jan, returning Thu, 14 Jan.Return flight with WestJet.Outbound indirect flight with WestJet, departs from Kitchener / Waterloo on Thu, 7 Jan, arriving in Seattle / Tacoma International.Inbound indirect flight with WestJet, departs from Seattle / Tacoma International on Thu, 14 Jan, arriving in Toronto Pearson International.Price includes taxes and charges.From $648, select.

Find the cheapest month to fly from Toronto to Seattle

We’re always keeping an eye on fares, so you can find the best one in seconds. It looks like Toronto to Seattle flights are currently cheapest in November.

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Direct flights from Toronto to Seattle

Alternative Toronto to Seattle routes

Looking for the cheapest, fastest or easiest route from Toronto to Seattle? You could fly into the following airports instead.

Toronto to Seattle: Flight information

The things to know before you go.

Cheapest flight found	$500
Cheapest month to fly	November
Average flight time	5 hrs, 25 mins
Most popular airline	Alaska Airlines
Average flights per week	29

Finding cheap flights from Toronto to Seattle: Frequently asked questions

How many airports are there in Seattle?

There are 4 airports in Seattle: Seattle Lake Union SPB, Seattle Boeing Fld, Seattle / Tacoma International, and Paine Field.

How much are return flights from Toronto to Seattle?

The best price we found for a return flight from Toronto to Seattle is $500. This is an estimate based on information collected from different airlines and travel providers over the last 4 days and is subject to change and availability.

How long does it take to fly from Toronto to Seattle?

5 hours and 25 minutes is the average flight time from Toronto to Seattle.

Which airlines fly direct from Toronto to Seattle?

Alaska Airlines, Air Canada and United fly direct from Toronto to Seattle.

How many flights are there a week from Toronto to Seattle?

As of July 2026, there are 29 flights per week flying from Toronto to Seattle.

When is the cheapest time to fly from Toronto to Seattle?

The cheapest month to fly from Toronto to Seattle is usually November.

Which is the cheapest airport to fly into in Seattle?

If you're flying from Toronto, the cheapest airport near Seattle is Seattle / Tacoma International – which is 19.5 km away from the centre of Seattle. We've found flights into this airport from $500.

Which upcoming date is cheapest to fly from Toronto to Seattle on?

After crunching the numbers on our flight calendar, we found that it is currently cheapest to fly from Toronto to Seattle on Friday, 6 November 2026.

Can I get a direct flight from Toronto to Seattle?

Yes – the average flight time is 5 hours and 25 minutes.

How can I get the best flight deal from Toronto to Seattle?

We show every price from over 1,200 airlines and travel agents, comparing them all so you don’t have to. If you know you want to fly to Seattle but you’re not ready to book, set up a Price Alert. We’ll track prices for you, and let you know when they rise or fall.

When is the best time to book flights to Seattle?

We crunched all the numbers in our flight calendar and it looks like the cheapest time to book a flight to Seattle is around 40 days in advance, so don’t leave your flight to the last minute.

What’s the weather like in Seattle?

In July, the average temperature is usually around 17°C. August is typically the warmest month in Seattle, when it usually averages around 23°C. You can expect the least rain in July. The coldest month is December, with temperatures averaging 0°C. The rainiest month is November.

Which is the cheapest airline to fly from Toronto to Seattle with?

The cheapest airline that flies to Seattle is WestJet. And the cheapest airline that flies to Seattle Boeing Fld Airport is Air Canada.

Flying from Toronto to Seattle: what you need to know

Planning your flight from Toronto to Seattle begins with finding the right airport to start your trip. Toronto Pearson International Airport (YYZ), Toronto Island Airport (YTZ) and John C. Munro Hamilton Airport (YHM) are the main terminals in Toronto.
When it comes to planning your arrival in Seattle, Seattle / Tacoma International Airport (SEA) and Seattle Lake Union SPB Airport (LKE) are the primary gateways.
Take a direct Toronto to Seattle flight and you'll be travelling for an average of 5 hours 25 minutes.
The timezone in Seattle is UTC-8, which is three hours behind Toronto.
The most popular route for flights from Toronto to Seattle is from Toronto Pearson International Airport (YYZ) to Seattle / Tacoma International Airport (SEA). You can choose from 13 services every week between these two airports. If you'd like to set off at the first opportunity, the earliest flight from YYZ to SEA is the 08:15 Air Canada service. If you prefer to travel later, the last available departure is at 19:20 with Air Canada.
Give yourself plenty of time to get on your Toronto to Seattle flight. As a general rule, arrive two hours before international departures and an hour ahead for domestic flights.
Be prepared for bigger queues in popular months such as August. Arriving up to four hours in advance for international flights and two hours for a domestic departure is a wise move.

How to find the cheapest flights from Toronto to Seattle

Don't wait until the last moment. You're more likely to get cheap Toronto to Seattle flights if you book early. Airlines often have some amazing early bird rates.
Finding cheap plane tickets from Toronto to Seattle is more likely if you're flexible with your travel dates. Use the 'Whole month' tool to see the lowest prices across each month and snap up a great deal.
There's no need to check every day to find out if fares have dropped when you set up a Price Alert. We'll tell you the moment a better deal is available on cheap flights from Toronto to Seattle.
Pick your preferred arrival and departure times, number of stops and airlines with the filters. Alternatively, sort your Toronto to Seattle flight results by 'Fastest,' 'Best' or 'Cheapest.'

Flying from Toronto

Toronto Pearson International Airport (YYZ)

You can book a direct flight from Toronto to Seattle taking off from Toronto Pearson International Airport (YYZ). Begin your journey at YYZ and come in for landing at Seattle / Tacoma International Airport (SEA).
Air Canada is a popular airline that offers direct Toronto to Seattle plane tickets leaving from YYZ.
Located around 21 kilometres from the centre of Toronto, YYZ can be reached in about 30 minutes by car (depending on traffic). The journey on public transport is roughly 25 minutes.
Want a handy hotel close to Toronto Pearson International Airport? If you've booked an early flight from Toronto to Seattle, these accommodation options will have you nice and close to your departure gate:
Of all flights departing from Toronto Pearson International Airport, 68% touch down on time at their destination.

Toronto Island Airport (YTZ)

You can get to YTZ from the centre of Toronto in about 10 minutes by car, depending on traffic conditions. The journey by public transport takes roughly 20 minutes to cover the 3 kilometres or so.
It's your holiday, so why not spend another night away? Think about kicking back in one of these hotels near Toronto Island Airport the day before your flight from Toronto to Seattle:
70% of flights leaving Toronto Island Airport meet their expected arrival time.

John C. Munro Hamilton Airport (YHM)

YHM is roughly 72 kilometres from central Toronto. The drive from the city centre to the terminal takes about 1 hour 10 minutes. If you're considering public transport, you can expect a journey of around 1 hour 50 minutes.
An early-morning Toronto to Seattle flight shouldn't feel like a mad dash. Book a room near John C. Munro Hamilton Airport at Super 8 by Wyndham Mt Hope Hamilton Intl Arpt on or Homestead House Bed & Breakfast and get to the terminal with plenty of time to spare.
Airports have an on-time performance rating that tracks how often flights reach their destinations without delays. At YHM, that figure is 68%.

Arriving in Seattle

Seattle / Tacoma International Airport (SEA)

Seattle / Tacoma International Airport (SEA) is approximately 19 kilometres from the centre of Seattle. If you're catching a taxi or a ride-share, the drive takes around 25 minutes.
If you're travelling by public transport, expect a journey time of roughly 35 minutes.
Reserve a hotel close to SEA if you have a late flight from Toronto to Seattle. Settle into one of these accommodation options and avoid the hassle of a long transfer:
Follow your own route with a Seattle / Tacoma International Airport rental car. Book your wheels from Thrifty, Europcar or Budget and discover more of Seattle and beyond.
Reserving your ride from Seattle / Tacoma International Airport about one week ahead can help you secure the lowest rate.

Paine Field Airport (PAE)

Once your flight from Toronto to Seattle has hit the runway, you can reach the city centre in about 20 minutes by car. Central Seattle is roughly 32 kilometres from Paine Field Airport (PAE).
Travelling by public transport will take about 40 minutes.
After your flight from Toronto to Seattle, rest your head at a hotel close to PAE. These are some comfortable options that'll help you slip into relaxation mode:
Touch down, grab your Paine Field Airport rental car, and drive off without skipping a beat. Budget and Enterprise are popular companies to pick from here.
Generally speaking, the earlier you book, the more you save and the better your options. Reserve your ride from PAE once your travel dates are set.

Seattle Boeing Fld Airport (BFI)

Step off your flight from Toronto to Seattle and travel to your hotel or start exploring right away. The centre of Seattle is around 11 kilometres from Seattle Boeing Fld Airport (BFI) and typically takes 20 minutes to drive there.
The journey will take about 35 minutes if you use public transport.
Whether you want a zippy mini for a solo adventure or an SUV to move the whole family, you'll find the perfect Seattle Boeing Fld Airport rental car for your needs. Explore the types of wheels available from names such as Alamo, Budget and Avis.
Rental companies sometimes offer deals for early bookings, so secure your ride from BFI well ahead of your flight from Toronto to Seattle. A bit of planning goes a long way in savings.

Best time to go to Seattle

March is the quietest month for flights from Toronto to Seattle, while July is the most popular. Find the ideal time to visit Seattle based on whether you want a laid-back vibe or a more bustling atmosphere.
Book a Toronto to Seattle ticket departing in August if you want to experience the city during its warmest month. Expect temperatures in Seattle to range from 12ºC to 28ºC.
If you like cooler conditions, look for a cheap flight from Toronto to Seattle in February when temperatures average between -1ºC and 11ºC.

More about Seattle

When it comes to searching for somewhere to lay your head, you'll find the most popular stays in Seattle right here. Browse these options as soon as you've locked in your flight from Toronto to Seattle:
All great adventures should include a little sightseeing. Space Needle, Pike Place Fish Market and The Museum of Flight are attractions you won't want to skip in Seattle.

Explore more of the United States

Seattle has its own special appeal, but there are so many other corners of the United States just waiting to be discovered. About 241 kilometres south of Seattle, a trip to Portland will keep you on the move. Don't miss top attractions like Portland Japanese Garden, Peninsula Park Rose Garden and International Rose Test Garden.
Around 370 kilometres east of Seattle, Spokane is another essential stop in the United States. Start your sightseeing at Riverside State Park, Spokane Falls (Upper Falls) and Cathedral of Our Lady of Lourdes.