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Cheap Flights from Seattle (SEAA) to Toronto (YTOA)

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Compare Seattle to Toronto flight deals

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Flight deals from Seattle to Toronto

Looking for a cheap last-minute deal or the best return flight from Seattle to Toronto? Find the lowest prices on one-way and return tickets right here.
Toronto.£165 per passenger.Departing Thu, 17 Jul, returning Sun, 20 Jul.Return flight with WestJet.Outbound indirect flight with WestJet, departs from Seattle / Tacoma International on Thu, 17 Jul, arriving in Toronto Pearson International.Inbound indirect flight with WestJet, departs from Toronto Pearson International on Sun, 20 Jul, arriving in Seattle / Tacoma International.Price includes taxes and charges.From £165, select.
Thu, 17 JulSEA - YYZ with WestJet
1 stop
Sun, 20 JulYYZ - SEA with WestJet
1 stop
from £165
Toronto.£191 per passenger.Departing Thu, 21 Aug, returning Tue, 2 Sep.Return flight with WestJet.Outbound indirect flight with WestJet, departs from Seattle / Tacoma International on Thu, 21 Aug, arriving in Toronto Pearson International.Inbound indirect flight with WestJet, departs from Toronto Pearson International on Tue, 2 Sep, arriving in Seattle / Tacoma International.Price includes taxes and charges.From £191, select.
Thu, 21 AugSEA - YYZ with WestJet
1 stop
Tue, 2 SepYYZ - SEA with WestJet
1 stop
from £191
Toronto.£199 per passenger.Departing Thu, 24 Jul, returning Mon, 11 Aug.Return flight with WestJet.Outbound indirect flight with WestJet, departs from Seattle / Tacoma International on Thu, 24 Jul, arriving in Toronto Pearson International.Inbound indirect flight with WestJet, departs from Toronto Pearson International on Mon, 11 Aug, arriving in Seattle / Tacoma International.Price includes taxes and charges.From £199, select.
Thu, 24 JulSEA - YYZ with WestJet
1 stop
Mon, 11 AugYYZ - SEA with WestJet
1 stop
from £199
Toronto.£204 per passenger.Departing Tue, 10 Jun, returning Thu, 12 Jun.Return flight with WestJet.Outbound indirect flight with WestJet, departs from Seattle / Tacoma International on Tue, 10 Jun, arriving in Hamilton.Inbound indirect flight with WestJet, departs from Hamilton on Thu, 12 Jun, arriving in Seattle / Tacoma International.Price includes taxes and charges.From £204, select.
Tue, 10 JunSEA - YHM with WestJet
1 stop
Thu, 12 JunYHM - SEA with WestJet
1 stop
from £204
Toronto.£214 per passenger.Departing Tue, 5 Aug, returning Thu, 7 Aug.Return flight with WestJet.Outbound indirect flight with WestJet, departs from Seattle / Tacoma International on Tue, 5 Aug, arriving in Toronto Pearson International.Inbound indirect flight with WestJet, departs from Toronto Pearson International on Thu, 7 Aug, arriving in Seattle / Tacoma International.Price includes taxes and charges.From £214, select.
Tue, 5 AugSEA - YYZ with WestJet
1 stop
Thu, 7 AugYYZ - SEA with WestJet
1 stop
from £214
Toronto.£215 per passenger.Departing Tue, 2 Sep, returning Wed, 15 Oct.Return flight with Alaska Airlines and WestJet.Outbound indirect flight with Alaska Airlines, departs from Seattle / Tacoma International on Tue, 2 Sep, arriving in Toronto Pearson International.Inbound indirect flight with WestJet, departs from Toronto Pearson International on Wed, 15 Oct, arriving in Seattle / Tacoma International.Price includes taxes and charges.From £215, select.
Tue, 2 SepSEA - YYZ with Alaska Airlines
1 stop
Wed, 15 OctYYZ - SEA with WestJet
1 stop
from £215
Toronto.£225 per passenger.Departing Tue, 9 Sep, returning Sat, 13 Sep.Return flight with Alaska Airlines and WestJet.Outbound indirect flight with Alaska Airlines, departs from Seattle / Tacoma International on Tue, 9 Sep, arriving in Toronto Pearson International.Inbound indirect flight with WestJet, departs from Toronto Pearson International on Sat, 13 Sep, arriving in Seattle / Tacoma International.Price includes taxes and charges.From £225, select.
Tue, 9 SepSEA - YYZ with Alaska Airlines
1 stop
Sat, 13 SepYYZ - SEA with WestJet
1 stop
from £225
Toronto.£228 per passenger.Departing Tue, 4 Nov, returning Fri, 7 Nov.Return flight with Alaska Airlines and Air Canada.Outbound direct flight with Alaska Airlines departs from Seattle / Tacoma International on Tue, 4 Nov, arriving in Toronto Pearson International.Inbound direct flight with Air Canada departs from Toronto Pearson International on Fri, 7 Nov, arriving in Seattle / Tacoma International.Price includes taxes and charges.From £228, select.
Alaska Airlines
Tue, 4 NovSEA - YYZ with Alaska Airlines
Direct
Air Canada
Fri, 7 NovYYZ - SEA with Air Canada
Direct
from £228
How did we find these deals? The deals you see here are the lowest prices for flight tickets from Seattle to Toronto found in the last 4 days, and are subject to change and availability.

Find the cheapest month to fly from Seattle to Toronto

We’re always keeping an eye on fares, so you can find the best one in seconds. It looks like Seattle to Toronto flights are currently cheapest in July.
May
from £714
Jun
from £204
Jul
from £165
Aug
from £214
Sep
from £225
Oct
from £247
Nov
from £228
Dec
Find prices
Jan
from £414
Feb
from £446
Mar
Find prices
Apr
Find prices

Direct flights from Seattle to Toronto

Alternative Seattle to Toronto routes

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

Seattle to Toronto: Flight information

The things to know before you go.
Cheapest flight found£165
Cheapest month to flyJuly
Average flight time4 hrs, 43 mins
Most popular airlineAir Tahiti Nui
Average flights per week64

Finding cheap flights from Seattle to Toronto: Frequently asked questions

There are 4 airports in Toronto: Toronto Island, Toronto Pearson International, Hamilton, and Kitchener / Waterloo.
The best price we found for a return flight from Seattle to Toronto is £165. 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.
4 hours and 43 minutes is the average flight time from Seattle to Toronto.
Air Tahiti Nui, Qatar Airways and Air Canada fly direct from Seattle to Toronto.
As of May 2025, there are 64 flights per week flying from Seattle to Toronto.
The cheapest month to fly from Seattle to Toronto is usually May 2025.
If you're flying from Seattle, the cheapest airport near Toronto is Toronto Pearson International – which is 12.7 miles away from the centre of Toronto. We've found flights into this airport from £165.
After crunching the numbers on our flight calendar, we found that it is currently cheapest to fly from Seattle to Toronto on Thursday, 17 July 2025.
Yes – the average flight time is 4 hours and 43 minutes.
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 Toronto 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.
We crunched all the numbers in our flight calendar and it looks like the cheapest time to book a flight to Toronto is around 40 days in advance, so don’t leave your flight to the last minute.
In May, the average temperature is usually around 12°C. July is typically the warmest month in Toronto, when it usually averages around 25°C. You can expect the least rain in February. The coldest month is January, with temperatures averaging -8°C. The rainiest month is September.
The cheapest airline that flies to Toronto is WestJet. And the cheapest airline that flies to Toronto Pearson International Airport is Alaska Airlines.

Flying from Seattle to Toronto: what you need to know

  • There are a couple of main airports you can start your trip from in Seattle. Check out your options leaving from Seattle-Tacoma International Airport (SEA) or Lake Union Sea Plane Base Airport (LKE) when booking your flight from Seattle to Toronto.

  • Toronto has a good selection of airports you can jet into. Hop off the plane at Pearson International Airport (YYZ), Billy Bishop Toronto City Airport (YTZ) or Region of Waterloo International Airport (YKF).

  • The average length of a direct Seattle to Toronto flight is 4 hours 45 minutes.

  • The timezone in Toronto is UTC-4, which is three hours ahead of Seattle.

  • With 14 flights a week between the two airports, Seattle-Tacoma International Airport (SEA) to Pearson International Airport (YYZ) is the busiest route. Hop on the first flight from Seattle to Toronto with Alaska Airlines at 06:52. If you prefer to make the most of your day before flying, the last departure from SEA to YYZ is with Air Canada at 23:10.

  • Leave enough time to get on your Seattle to Toronto flight. Generally, it's best to arrive at least two hours before international departures and an hour ahead for domestic flights.

  • Peak months like July or holiday periods such as spring break and Christmas will mean longer waits at check-in and security. Play it safe and get to the terminal even earlier. Arriving two hours before domestic flights and four hours ahead of an international departure is a smart idea.

How to find the cheapest flights from Seattle to Toronto

  • To score cheap Seattle to Toronto flights, book your trip two months before your planned departure.

  • The best month for finding cheap plane tickets from Seattle to Toronto is May. Use the 'Whole month' tool to compare flight prices, then select the dates offering the lowest fares.

  • Finding a cheap flight from Seattle to Toronto is a breeze with Price Alerts. All you need to do is create one of these automatic alerts and we'll let you know when a better deal is available.

  • Pick your preferred arrival and departure times, airlines and number of stops by using the filters. Or sort your Seattle to Toronto flight results by 'Best,' 'Cheapest' or 'Fastest.'

Flying from Seattle

Seattle-Tacoma International Airport (SEA)

  • You can catch a direct flight from Seattle to Toronto jetting off from Seattle-Tacoma International Airport (SEA). Begin your trip at SEA and come in for landing at Pearson International Airport (YYZ).

  • Lock in your Seattle to Toronto plane tickets with Air Canada. This airline is a top pick for direct flights from SEA.

  • A stopover is the perfect opportunity to break up your trip — and maybe even explore another city. When browsing Seattle to Toronto flights leaving from Seattle-Tacoma International Airport, uncheck the 'Direct flights only' box to see where you can stop along the way. Top options include:

    • Calgary International Airport (YYC)

    • Montreal-Pierre Elliott Trudeau International Airport (YUL)

    • Vancouver International Airport (YVR)

  • Located around 11 miles from central Seattle, SEA can be reached in about 20 minutes by car (depending on traffic). The journey on public transport is roughly 55 minutes.

  • Catching an early flight from Seattle to Toronto? Avoid the stress of rushing to the terminal (and sneak in some extra precious sleep) by choosing one of these stays close to Seattle-Tacoma International Airport:

    • Red Roof Inn Seattle Airport - Seatac

    • DoubleTree by Hilton Seattle Airport

    • Days Inn by Wyndham Seatac Airport

  • Seattle-Tacoma International Airport scores top marks for its on-time performance. 81.27% of flights that take off from SEA arrive at their destination without delay.

Arriving in Toronto

Pearson International Airport (YYZ)

  • Pearson International Airport (YYZ) to central Toronto takes around 25 minutes to reach by car. The centre is roughly 12 miles away.

  • When travelling by public transport, expect a journey time of roughly 50 minutes.

  • The last thing you need is a lengthy journey to your hotel if you're arriving on a late flight from Seattle to Toronto. Book one of these accommodation options near YYZ instead:

    • Best Western Plus Travel Hotel Toronto Airport

    • Holiday Inn Toronto International Airport, an IHG Hotel

    • Delta Hotels Toronto Airport & Conference Centre

  • Get on the fast track to adventure by picking up a Pearson International Airport rental car. Grab a set of wheels from Routes Car Rentals, Green Motion or Thrifty and experience the lesser-explored corners of Toronto and beyond.

  • For the best deal, book your ride from Pearson International Airport about three weeks ahead of your Seattle to Toronto flight.

Billy Bishop Toronto City Airport (YTZ)

  • Billy Bishop Toronto City Airport (YTZ) is around 2 miles from the centre of Toronto. After your flight from Seattle to Toronto, it'll take you approximately 35 minutes to get to the heart of the city in a cab or ride-share.

  • You can expect the journey to take roughly 40 minutes on public transport.

  • After your flight from Seattle to Toronto, unwind at a hotel near YTZ. These are some comfortable options that'll help you switch to relaxation mode:

    • Chelsea Hotel Toronto

    • One King West Hotel and Residence

    • Cambridge Suites Toronto

  • The fastest way to reach your destination is with a Billy Bishop Toronto City Airport rental car. Pick up your wheels from Hertz, National or Avis and hit the road in a heartbeat.

  • Get the pick of the lot. Reserving your ride from YTZ one week ahead of time often means better deals and a wider selection of vehicles.

Region of Waterloo International Airport (YKF)

  • Travel to the centre after your flight from Seattle to Toronto has arrived. Central Toronto is around 50 miles from Region of Waterloo International Airport (YKF) and takes roughly 1 hour 15 minutes to get to by car.

  • If you're using public transport, the journey takes around 4 hours 5 minutes.

  • Enjoy an unhurried start to your break by staying at a hotel near YKF after your Seattle to Toronto flight. Recharge after a day of travel or simply take a moment to get your bearings in a new city at:

    • DoubleTree by Hilton Kitchener

    • Courtyard by Marriott Kitchener

    • Radisson Hotel Kitchener Waterloo

  • Whether you're after a zippy mini for a solo trip or a full-size SUV to fit everyone and their gear, you'll find the ideal Region of Waterloo International Airport rental car for you. Explore the types of wheels available here from names such as Avis, Enterprise and Budget.

  • Booking a couple of weeks in advance of your flight from Seattle to Toronto is a smart move. As well as better deals, you'll have a wider selection of vehicle makes and models at YKF.

Best time to go to Toronto

  • August is the busiest month for flights from Seattle to Toronto. To escape the crowds, go to Toronto in February.

  • Book a Seattle to Toronto ticket departing in July if you want to visit the city during its warmest month. You can expect temperatures in Toronto to range from 14ºC (57ºF) to 28ºC (82ºF).

  • January has average temperatures of between -12ºC (10ºF) and 1ºC (34ºF). Search for cheap flights from Seattle to Toronto around that time if you like travelling in cooler conditions.

More about Toronto

  • When it comes to looking for somewhere to lay your head, you'll find the best places to stay in Toronto right here. Browse these options as soon as you've locked in your flight from Seattle to Toronto:

    • Chelsea Hotel Toronto

    • One King West Hotel and Residence

    • Cambridge Suites Toronto

  • All great journeys should include a little sightseeing. CN Tower, Royal Ontario Museum and Go Tours Canada - Distillery District are must-visits when exploring Toronto.

Explore more of Canada

  • You've done Toronto, now it's time to explore other parts of Canada. Travel around 310 miles north-east to Montreal to check off its must-visit sights. From Mount Royal Park to Montreal Botanical Garden and Saint Joseph's Oratory of Mount Royal, you'll have a packed itinerary ahead.

  • If you want to check out another major stop in Canada, consider Ottawa, about 220 miles north-east of Toronto. Parliament Hill, Rideau Canal and National Gallery of Canada are the start of reasons to visit.

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Plan the rest of your trip from Seattle to Toronto

  • Car hire in Toronto
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Prices shown on this page are estimated lowest prices only. Found in the last 45 days.

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