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

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? If you want to travel next month, return fares start from £285. Find the lowest prices on one-way and return tickets right here.

Toronto.£124 per passenger.Departing Mon, 14 Sep.One-way flight with WestJet.Outbound indirect flight with WestJet, departs from Seattle / Tacoma International on Mon, 14 Sep, arriving in Toronto Pearson International.Price includes taxes and charges.From £124, select.

Toronto.£125 per passenger.Departing Mon, 5 Oct.One-way flight with WestJet.Outbound indirect flight with WestJet, departs from Seattle / Tacoma International on Mon, 5 Oct, arriving in Toronto Pearson International.Price includes taxes and charges.From £125, select.

Toronto.£134 per passenger.Departing Mon, 16 Nov.One-way flight with WestJet.Outbound indirect flight with WestJet, departs from Seattle / Tacoma International on Mon, 16 Nov, arriving in Toronto Pearson International.Price includes taxes and charges.From £134, select.

Toronto.£143 per passenger.Departing Tue, 25 Aug.One-way flight with WestJet.Outbound indirect flight with WestJet, departs from Seattle / Tacoma International on Tue, 25 Aug, arriving in Toronto Pearson International.Price includes taxes and charges.From £143, select.

Toronto.£143 per passenger.Departing Thu, 10 Dec.One-way flight with WestJet.Outbound indirect flight with WestJet, departs from Seattle / Tacoma International on Thu, 10 Dec, arriving in Toronto Pearson International.Price includes taxes and charges.From £143, select.

Toronto.£143 per passenger.Departing Tue, 28 Jul.One-way flight with WestJet.Outbound indirect flight with WestJet, departs from Seattle / Tacoma International on Tue, 28 Jul, arriving in Toronto Pearson International.Price includes taxes and charges.From £143, select.

Toronto.£147 per passenger.Departing Sat, 26 Sep.One-way flight with Air Canada.Outbound direct flight with Air Canada departs from Seattle / Tacoma International on Sat, 26 Sep, arriving in Toronto Pearson International.Price includes taxes and charges.From £147, select.

Toronto.£148 per passenger.Departing Sat, 12 Dec.One-way flight with Air Canada.Outbound direct flight with Air Canada departs from Seattle / Tacoma International on Sat, 12 Dec, arriving in Toronto Pearson International.Price includes taxes and charges.From £148, select.

Toronto.£149 per passenger.Departing Mon, 15 Feb.One-way flight with Air Canada.Outbound direct flight with Air Canada departs from Seattle / Tacoma International on Mon, 15 Feb, arriving in Toronto Pearson International.Price includes taxes and charges.From £149, select.

Toronto.£149 per passenger.Departing Sat, 16 Jan.One-way flight with Air Canada.Outbound direct flight with Air Canada departs from Seattle / Tacoma International on Sat, 16 Jan, arriving in Toronto Pearson International.Price includes taxes and charges.From £149, select.

Toronto.£149 per passenger.Departing Sat, 7 Nov.One-way flight with Air Canada.Outbound direct flight with Air Canada departs from Seattle / Tacoma International on Sat, 7 Nov, arriving in Toronto Pearson International.Price includes taxes and charges.From £149, select.

Toronto.£149 per passenger.Departing Sun, 18 Oct.One-way flight with Air Canada.Outbound direct flight with Air Canada departs from Seattle / Tacoma International on Sun, 18 Oct, arriving in Toronto Pearson International.Price includes taxes and charges.From £149, select.

Toronto.£161 per passenger.Departing Tue, 21 Jul.One-way flight with Air Canada.Outbound direct flight with Air Canada departs from Seattle / Tacoma International on Tue, 21 Jul, arriving in Toronto Pearson International.Price includes taxes and charges.From £161, select.

Toronto.£203 per passenger.Departing Sun, 6 Jun.One-way flight with Air Canada.Outbound indirect flight with Air Canada, departs from Seattle / Tacoma International on Sun, 6 Jun, arriving in Toronto Pearson International.Price includes taxes and charges.From £203, select.

Toronto.£209 per passenger.Departing Sun, 6 Jun.One-way flight with Air Canada.Outbound direct flight with Air Canada departs from Seattle / Tacoma International on Sun, 6 Jun, arriving in Toronto Pearson International.Price includes taxes and charges.From £209, select.

Toronto.£209 per passenger.Departing Thu, 27 May.One-way flight with Air Canada.Outbound direct flight with Air Canada departs from Seattle / Tacoma International on Thu, 27 May, arriving in Toronto Pearson International.Price includes taxes and charges.From £209, 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 September.

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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	£124
Cheapest month to fly	September
Average flight time	4 hrs, 45 mins
Most popular airline	Alaska Airlines
Average flights per week	34

Finding cheap flights from Seattle to Toronto: Frequently asked questions

How many airports are there in Toronto?

There are 4 airports in Toronto: Toronto Island, Toronto Pearson International, John C. Munro Hamilton, and Kitchener / Waterloo.

How much are return flights from Seattle to Toronto?

The best price we found for a return flight from Seattle to Toronto is £244. 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 Seattle to Toronto?

4 hours and 45 minutes is the average flight time from Seattle to Toronto.

Which airlines fly direct from Seattle to Toronto?

Alaska Airlines, United and Qatar Airways fly direct from Seattle to Toronto.

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

As of July 2026, there are 34 flights per week flying from Seattle to Toronto.

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

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

Which is the cheapest airport to fly into in Toronto?

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 £244.

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

After crunching the numbers on our flight calendar, we found that it is currently cheapest to fly from Seattle to Toronto on Friday, 23 October 2026.

Can I get a direct flight from Seattle to Toronto?

Yes – the average flight time is 4 hours and 45 minutes.

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

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.

When is the best time to book flights to Toronto?

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.

What’s the weather like in Toronto?

In July, the average temperature is usually around 21°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.

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

The cheapest airline that flies to Toronto is WestJet. And the cheapest airline that flies to Toronto Pearson International Airport is Air Canada.

Travelling from Seattle to Toronto: what you need to know

Seattle has a couple of airports where you can kick off your travels. Check out your options for booking a flight from Seattle to Toronto departing from Seattle / Tacoma International Airport (SEA) or Seattle Lake Union SPB Airport (LKE).
Step off the plane at one of Toronto's major entry points like Toronto Pearson International Airport (YYZ). You can also touch down at Toronto Island Airport (YTZ) or John C. Munro Hamilton Airport (YHM).
Around 4 hours 45 minutes is how long you'll be travelling on a direct Seattle to Toronto flight.
Toronto's timezone is UTC-5, making Toronto three hours ahead of Seattle.
Seattle / Tacoma International Airport (SEA) to Toronto Pearson International Airport (YYZ) is the most traveled route between these two cities. There are 13 weekly departures to choose from. If you have things to finalize before heading off, the last flight from Seattle to Toronto is with Air Canada at 12:20. Opt for the first SEA to YYZ departure operated by Air Canada at 06:00 to maximise your time in Toronto.
To ensure you make your Seattle to Toronto flight, leave plenty of time to check in and drop off your luggage. Arriving two hours before international departures and one hour before domestic flights is the standard rule.
Flying during a peak time such as July? Major public holidays and other popular seasons can lead to longer lines at security. Play things extra safe and arrive up to four hours before international flights and two hours before domestic departures.

How to find the cheapest flights from Seattle to Toronto

To pick up cheap Seattle to Toronto flights, book as early as possible. Airlines typically offer lower fares when flights first go on sale.
Getting cheap plane tickets from Seattle to Toronto is more likely if you're flexible with your trip dates. Try using the 'Whole month' search function to see the lowest fares across each month and snap up a sweet deal.
You don't need to check back in every day to find out if fares have dropped when you create a Price Alert. We'll notify you as soon as a better deal comes up on cheap flights from Seattle to Toronto.
Find an affordable Seattle to Toronto flight with the help of our filters. Choose your preferred times, airlines and number of stops, then sort the results by 'Cheapest' to see the best deals.

Flying from Seattle

Seattle / Tacoma International Airport (SEA)

Set out from Seattle / Tacoma International Airport (SEA) on a nonstop flight from Seattle to Toronto. From SEA, you can land directly at Toronto Pearson International Airport (YYZ).
Secure your Seattle to Toronto plane tickets with Air Canada. This carrier is a top pick for direct flights from SEA.
Think about adding a stopover to possibly find a cheaper Seattle to Toronto flight. Simply deselect 'Direct flights only' when searching for departures from Seattle / Tacoma International Airport. Take a break (and maybe save some cash) by stopping at one of these popular options:
- Orlando International Airport (MCO)
- Minneapolis St Paul Airport (MSP)
- Vancouver International Airport (YVR)
Travelling from central Seattle to SEA takes around 35 minutes on public transport. If you ride-share, drive or grab a taxi, you'll cover the 19 kms (12 miles) in 25 minutes or so, depending on traffic.
Looking for a convenient hotel near Seattle / Tacoma International Airport? If you're boarding an early flight from Seattle to Toronto, these stays will have you moments from check-in:
Seattle / Tacoma International Airport scores high marks for its on-time performance. 80% of flights that depart SEA reach their destination without delay.

Arriving in Toronto

Toronto Pearson International Airport (YYZ)

The distance from Toronto Pearson International Airport (YYZ) to central Toronto is roughly 21 kms (13 miles). It takes about 30 minutes to reach the centre driving.
Getting to the centre by public transport will take you around 25 minutes.
The last thing you need is a long journey to your hotel if you're landing late on a flight from Seattle to Toronto. Stay at one of these accommodation options near YYZ instead:
Get your adventure underway by picking up a Toronto Pearson International Airport rental car. Grab your wheels from Routes Car Rentals, Green Motion or Thrifty and experience the lesser-explored corners of Toronto and beyond.
Reserving your ride from Toronto Pearson International Airport about three weeks in advance can help you secure the lowest rate.

Toronto Island Airport (YTZ)

The centre of Toronto is about 3 kms (2 miles) from Toronto Island Airport (YTZ). Once your flight from Seattle to Toronto has hit the runway and you've made your way through the terminal, expect a drive of around 10 minutes.
You can expect the journey to take about 20 minutes on public transport.
You'll find some great places to call home for the night near YTZ. Tuck yourself in after your Seattle to Toronto flight at one of these perfectly located options:
Forget about public transport schedules or long taxi lines. Pick up a Toronto Island Airport rental car and blaze your own trail. Compare availability and rates from Hertz, National and Avis.
Lock in the best price by securing your ride from YTZ one week ahead of time. You'll also have access to a wider range of vehicles.

John C. Munro Hamilton Airport (YHM)

John C. Munro Hamilton Airport (YHM) is roughly 72 kms (45 miles) from central Toronto. It'll take you about 1 hour 10 minutes to reach the city centre in a car once you've stepped off your flight from Seattle to Toronto.
The journey takes around 1 hour 50 minutes by public transport.
If it's your first trip to the city, take the stress out of arrival day by staying someplace near YHM. Kick back at Super 8 by Wyndham Mt Hope Hamilton Intl Arpt on or Homestead House Bed & Breakfast after your Seattle to Toronto flight.
Whether you're after a compact for solo travel or a roomy SUV to move the whole family, you'll find the right John C. Munro Hamilton Airport rental car for your needs. Check out the types of wheels available from providers such as Avis, National and Budget.
Rental providers sometimes offer promotions for early bookings, so reserve your vehicle from YHM well ahead of your flight from Seattle to Toronto. A bit of planning goes a long way for your wallet.

Best time to go to Toronto

It's time to work out your travel dates for your flight from Seattle to Toronto. August is the most popular month for a trip to Toronto. If you like a more relaxed atmosphere, go in November.
The warmest month in Toronto is July, with temperatures ranging between 15ºC and 28ºC. Lock in your Seattle to Toronto ticket then if you enjoy this type of weather.
If you like cooler conditions, search for a cheap flight from Seattle to Toronto in February when temperatures average between -15ºC and 3ºC.

More about Toronto

When it comes to searching for somewhere to lay your head, you'll find the top stays in Toronto right here. Check out these hotels once you've booked your flight from Seattle to Toronto:
There are so many things to see and do in this city it can be tricky to know where to begin. CN Tower, Royal Ontario Museum and Toronto Islands are top attractions which should be on any good Toronto itinerary.

Explore more of Canada

Ottawa is just one of the many cities in Canada waiting to be explored after you've experienced Toronto. Around 354 kms (220 miles) to the northeast, check out popular attractions including Rideau Canal National Historic Site, Parliament Hill and Rideau Canal, Locks 1 - 8 - Ottawa.
If you're interested in discovering another corner of Canada, consider Mississauga, about 23 kms (14 miles) west of Toronto. Lake Ontario, Living Arts Centre and Rattray Marsh Conservation Area are among the biggest draws.