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Wondering how long to fly from Seattle to Toronto? A nonstop flight from Seattle to Toronto usually takes around 4 hrs 45 mins to 5 hrs 15 mins. Flight duration can vary depending on weather conditions, wind direction, aircraft type, and the selected route.
Flights from Seattle-Tacoma International Airport (SEA) to Toronto Pearson International Airport (YYZ) are generally fastest when booked nonstop. One-stop flights through cities such as Vancouver, Calgary, Chicago, or Minneapolis can take around 6 hrs 30 mins or more.
Seattle and Toronto are in different time zones. Toronto follows Eastern Time and is usually 3 hours ahead of Seattle.
For the quickest journey, compare nonstop Seattle to Toronto flights, departure times, airfares, baggage allowances, and airline services before booking.
The average Seattle to Toronto flight time depends on your departure airport, arrival airport, airline, aircraft type, weather, wind direction, and flight path. Most nonstop flights from Seattle to Toronto usually take around 4 hr 30 mins to 4 hr 50 mins.
Toronto Pearson International Airport (YYZ) is the main arrival airport for travellers flying from Seattle and receives nonstop services from Seattle–Tacoma International Airport (SEA). Toronto Billy Bishop Airport (YTZ) may appear on some itineraries, but flights generally require a connection.
| Departure Airport | Arrival Airport | Estimated Flight Time | Travel Tip |
|---|---|---|---|
| Seattle–Tacoma International Airport (SEA) | Toronto Pearson International Airport (YYZ) | Around 4 hr 30 mins – 4 hr 50 mins nonstop | Best option for most travellers, with convenient flight choices and easy access to Toronto. |
| Seattle–Tacoma International Airport (SEA) | Billy Bishop Toronto City Airport (YTZ) | Usually around 6 hr 30 mins – 9 hr+ with one or more stops | Optional arrival airport. It may be convenient for downtown Toronto, but flights from Seattle usually require a connection. |
| Paine Field Airport (PAE) | Toronto airports (YYZ or YTZ) | Usually around 7 hr – 12 hr+ with one or more stops | Optional airport for travellers based north of Seattle. Compare the total journey time carefully because Toronto flights generally require a connection. |
| Bellingham International Airport (BLI) | Toronto airports (YYZ or YTZ) | Usually around 7 hr – 12 hr+ with one or more stops | Optional airport for travellers in northern Washington. Most Toronto journeys require at least one connection. |
For the quickest journey, flights from Seattle–Tacoma International Airport (SEA) to Toronto Pearson International Airport (YYZ) are usually the most practical choice. SEA is the main airport for Seattle departures, while YYZ offers the strongest range of flight options and onward transportation.
Nonstop flights from Seattle to Toronto run about 4 hours 30 minutes. Air Canada, WestJet operate direct service on this route.
Connecting flights through hub cities add travel time. Routes through major airports typically take 6 to 9 hours including layover.
Compare both nonstop and connecting options when booking. Sometimes the longer itineraries cost $150 to $300 less than direct flights.
Toronto is 3 hours ahead of Seattle. Plan your arrival time carefully to minimize jet lag impact.
Eastbound flights typically depart in the afternoon or evening and arrive the next day. Westbound return flights often land the same calendar day you depart.
Book 6 to 8 weeks ahead for the best fares. Shoulder season months often offer better deals than peak travel periods.
Planning beyond this route? Explore more flight times, distances, and travel durations using our tools below. Start with our Flight Time Calculator to estimate journey times worldwide, or browse average travel times from your departure city using the Seattle Flight Times.
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