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Cheap flights from Seattle to Toronto

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Compare Seattle to Toronto flight deals

Find the cheapest month or even day of the year to fly to Toronto

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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.P12,205 per passenger.Departing Tue, 8 Apr, returning Tue, 15 Apr.Return flight with Spirit Airlines and Porter Airlines (Canada) Ltd.Outbound indirect flight with Spirit Airlines, departs from Seattle / Tacoma International on Tue, 8 Apr, arriving in Toronto Pearson International.Inbound indirect flight with Porter Airlines (Canada) Ltd, departs from Toronto Pearson International on Tue, 15 Apr, arriving in Seattle / Tacoma International.Price includes taxes and charges.From P12,205, select.
Toronto.P16,440 per passenger.Departing Mon, 10 Mar, returning Fri, 14 Mar.Return flight with Spirit Airlines and WestJet.Outbound indirect flight with Spirit Airlines, departs from Seattle / Tacoma International on Mon, 10 Mar, arriving in Toronto Pearson International.Inbound indirect flight with WestJet, departs from Toronto Pearson International on Fri, 14 Mar, arriving in Seattle / Tacoma International.Price includes taxes and charges.From P16,440, select.
Toronto.P16,572 per passenger.Departing Sat, 31 May, returning Wed, 11 Jun.Return flight with WestJet.Outbound indirect flight with WestJet, departs from Seattle / Tacoma International on Sat, 31 May, arriving in Toronto Pearson International.Inbound indirect flight with WestJet, departs from Kitchener / Waterloo on Wed, 11 Jun, arriving in Seattle / Tacoma International.Price includes taxes and charges.From P16,572, select.
Toronto.P17,189 per passenger.Departing Wed, 21 May, returning Fri, 30 May.Return flight with WestJet.Outbound indirect flight with WestJet, departs from Seattle / Tacoma International on Wed, 21 May, arriving in Kitchener / Waterloo.Inbound indirect flight with WestJet, departs from Kitchener / Waterloo on Fri, 30 May, arriving in Seattle / Tacoma International.Price includes taxes and charges.From P17,189, select.
Toronto.P18,874 per passenger.Departing Thu, 12 Jun, returning Thu, 19 Jun.Return flight with WestJet.Outbound indirect flight with WestJet, departs from Seattle / Tacoma International on Thu, 12 Jun, arriving in Toronto Pearson International.Inbound indirect flight with WestJet, departs from Hamilton on Thu, 19 Jun, arriving in Seattle / Tacoma International.Price includes taxes and charges.From P18,874, select.
Toronto.P20,150 per passenger.Departing Wed, 26 Mar, returning Wed, 2 Apr.Return flight with Spirit Airlines and WestJet.Outbound indirect flight with Spirit Airlines, departs from Seattle / Tacoma International on Wed, 26 Mar, arriving in Toronto Pearson International.Inbound indirect flight with WestJet, departs from Toronto Pearson International on Wed, 2 Apr, arriving in Seattle / Tacoma International.Price includes taxes and charges.From P20,150, select.
Toronto.P23,495 per passenger.Departing Thu, 18 Sep, returning Sat, 20 Sep.Return flight with WestJet.Outbound indirect flight with WestJet, departs from Seattle / Tacoma International on Thu, 18 Sep, arriving in Toronto Pearson International.Inbound indirect flight with WestJet, departs from Toronto Pearson International on Sat, 20 Sep, arriving in Seattle / Tacoma International.Price includes taxes and charges.From P23,495, select.
Toronto.P24,392 per passenger.Departing Wed, 2 Apr, returning Fri, 2 May.Return flight with Spirit Airlines and Alaska Airlines.Outbound indirect flight with Spirit Airlines, departs from Seattle / Tacoma International on Wed, 2 Apr, arriving in Toronto Pearson International.Inbound indirect flight with Alaska Airlines, departs from Toronto Pearson International on Fri, 2 May, arriving in Seattle / Tacoma International.Price includes taxes and charges.From P24,392, select.

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 April.
Feb
Find prices
Mar
from P16,440
Apr
from P12,205
May
from P17,189
Jun
from P18,874
Jul
from P26,555
Aug
from P30,606
Sep
from P23,495
Oct
from P33,859
Nov
Find prices
Dec
from P33,859
Jan
from P30,452

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 foundP12,205
Cheapest month to flyApril
Average flight time4 hrs, 45 mins
Most popular airlineUnited
Average flights per week37

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 P12,205. 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 45 minutes is the average flight time from Seattle to Toronto.
United, Air Canada and Alaska Airlines fly direct from Seattle to Toronto.
As of February 2025, there are 37 flights per week flying from Seattle to Toronto.
The cheapest month to fly from Seattle to Toronto is usually February 2025.
If you're flying from Seattle, the cheapest airport near Toronto is Toronto Pearson International – which is 20.4 km away from the centre of Toronto. We've found flights into this airport from P12,205.
After crunching the numbers on our flight calendar, we found that it is currently cheapest to fly from Seattle to Toronto on Tuesday, 8 April 2025.
Yes – the average flight time is 4 hours and 45 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 February, the average temperature is usually around -5°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 Spirit Airlines. And the cheapest airline that flies to Toronto Pearson International Airport is Air Canada.

Flying from Seattle to Toronto: what you need to know

  • Seattle has two main airports that could be the jumping-off point for your adventure. Explore your options for reserving a flight from Seattle to Toronto leaving from Seattle-Tacoma International Airport (SEA) or Lake Union Sea Plane Base (LKE).

  • Toronto has a number of airports you can fly into. Touch down at Pearson International Airport (YYZ), Billy Bishop Toronto City Airport (YTZ) or Region of Waterloo International Airport (YKF).

  • 4 hours 36 minutes is the average journey time for a direct flight from Seattle to Toronto. Based in the UTC-4 timezone, Toronto is 3 hours ahead of Seattle.

  • With 23 flights a week between the two airports, Seattle-Tacoma International Airport (SEA) to Pearson International Airport (YYZ) is the busiest route. Board the earliest flight from Seattle to Toronto with Alaska Airlines at 06:52. If you'd like to get more out of your day before jetting off, the last flight from SEA to YYZ is with Air Canada at 23:10.

  • To ensure you catch your flight from Seattle to Toronto, leave enough time to check in and find your gate. Turning up two hours ahead of international departures and an hour before domestic flights is the general rule.

  • Travelling over a peak time like July? School holidays and other high seasons can mean longer queues at check-in and security. Play things extra safe and arrive up to four hours ahead of an international flight and two hours before domestic departures.

  • You don't need a visa for Canada if you hold a passport from United States and are travelling for tourism purposes. Travel documentation and visa requirements can be subject to change. So before booking your cheap flights from Seattle to Toronto, be sure to check with your airline and your destination country's local embassy or consulate for the latest rules.

Flying from Seattle

Seattle-Tacoma International Airport (SEA)

  • You can catch a direct flight from Seattle to Toronto leaving from Seattle-Tacoma International Airport (SEA). Begin your trip at SEA and arrive at Pearson International Airport (YYZ).

  • Air Canada is a popular carrier that offers direct flights from Seattle to Toronto departing from SEA.

  • Think about adding a stopover to potentially save on your flight from Seattle to Toronto. Just deselect 'Direct flights only' when searching for departures from Seattle-Tacoma International Airport. Break up the journey at one of these popular options:

    • Tampa International Airport (TPA)

    • Orlando International Airport (MCO)

    • Calgary International Airport (YYC)

  • SEA is about 23 kilometres from central Seattle. If you're catching a cab, driving or ride-sharing from the centre, it'll take 18 minutes or so to get there, depending on the traffic. If you're using public transport, expect the trip time to be around 54 minutes.

  • In search of a handy hotel near Seattle-Tacoma International Airport? If you've booked an early flight from Seattle to Toronto, these stays will put you moments from check-in:

Lake Union Sea Plane Base Airport (LKE)

  • Break up your flight from Seattle to Toronto with a stop so you can recharge or perhaps go somewhere you've never been before. Some great stopovers between Seattle-Tacoma International Airport and Toronto include:

    • Tampa International Airport (TPA)

    • Orlando International Airport (MCO)

    • Calgary International Airport (YYC)

  • With public transport, you can travel from central Seattle to LKE in about 23 minutes. The airport is roughly 3 kilometres away, and making the trip by car will take approximately 11 minutes.

  • Want to enjoy an extra night away before your flight from Seattle to Toronto? Kick back in a hotel near Lake Union Sea Plane Base Airport before your trip officially starts. Here's where you can stay:

Arriving in Toronto

Pearson International Airport (YYZ)

  • Pearson International Airport (YYZ) to central Toronto is approximately 27 kilometres. It'll take you about 26 minutes to reach the centre driving.

  • Getting to the centre on public transport takes about 49 minutes.

  • The last thing you want is a long journey to your hotel if you're getting in late on a flight from Seattle to Toronto. Reserve one of these accommodation options near YYZ instead:

Billy Bishop Toronto City Airport (YTZ)

  • After your flight from Seattle to Toronto has hit the runway, you can make your way to the city centre in about 35 minutes by car. Central Toronto is roughly 3 kilometres from Billy Bishop Toronto City Airport (YTZ).

  • You can also opt for public transport, which will take roughly 39 minutes.

  • After your flight from Seattle to Toronto, kick back at a hotel close to YTZ. These are some great options that'll help you switch to relaxation mode:

How to find the cheapest flights from Seattle to Toronto

  • The lowest price we've seen for a one-way ticket from Seattle to Toronto is P4,601. For a return flight on this route, the best price is P12,205. Depending on when you book and the availability, these fares can change.

  • Get cheap tickets from Seattle to Toronto by booking 9 months ahead. According to our research, that's the sweet spot for finding a bargain.

  • May is the cheapest month for tickets from Seattle to Toronto. If you want to travel during a different time of year, the 'Whole month' tool will show you the lowest prices across every month.

  • Finding a cheap ticket from Seattle to Toronto couldn't be easier with Price Alerts. Simply create one of these automatic alerts and we'll get in touch when the price has fallen.

  • Tailor your flights using filters. Pick your ideal departure and arrival times, airlines and total journey duration. You can also sort the results by 'Cheapest,' 'Fastest' or 'Best' flights from Seattle to Toronto.

Best time to go to Toronto

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

  • Lock in your flight from Seattle to Toronto for July if you'd like to visit the city during its warmest month. Expect temperatures in Toronto to range from 14ºC to 28ºC.

  • January sees average temperatures of between -12ºC and 1ºC. Search for cheap tickets from Seattle to Toronto sometime then if you want to travel in cooler conditions.

More about Toronto

Complete your Toronto trip with a car rental

  • Explore our range of car rentals once you've found your hotel and cheap flight from Seattle to Toronto. Whether you're searching for a compact ride, family sedan or something with all the extras, you can compare companies in one go to find the perfect deal.

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Plan the rest of your trip from Seattle to Toronto

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