Seattle to Toronto Flight Time & Schedules

How Long Is the Flight from Seattle to Toronto?

A nonstop flight from Seattle to Toronto usually takes around 4 hours 35 minutes to 5 hours. Flights operate between Seattle-Tacoma International Airport (SEA) and Toronto Pearson International Airport (YYZ), connecting the Pacific Northwest with Canada’s largest city.

The total travel time can vary slightly depending on the airline, aircraft type, weather conditions and air traffic. For travellers looking for the quickest option, nonstop flights provide a more convenient journey by avoiding additional connection time and airport transfers.

What Is the Typical Nonstop Flight Time from Seattle to Toronto?

Direct flights from Seattle to Toronto generally take around 4 hours 45 minutes.

The scheduled flight duration may vary depending on the direction of travel, seasonal schedules and operating conditions. Flights heading east across North America can experience differences due to wind patterns and air traffic levels.

A nonstop SEA to YYZ service allows passengers to complete the journey on a single aircraft without changing planes, making it a practical option for business and leisure travellers.

A nonstop flight from Seattle-Tacoma International Airport (SEA) to Toronto Pearson International Airport (YYZ) typically takes approximately 4 hours 35 minutes to 5 hours.

Direct services offer a simpler travel experience by reducing the need for connecting airports, additional boarding procedures and extended waiting periods.

Nonstop availability depends on airline schedules and seasonal operations, so travellers should check current flight options before booking.

Travellers can also choose connecting flights between Seattle and Toronto through major North American hubs.

Some faster one-stop itineraries may take approximately:

Around 6 hours via Vancouver
Around 6 hours 30 minutes via Calgary
Around 7 hours via Chicago
Around 7 hours 30 minutes via Denver

These journey times are estimates and may vary depending on the airline, connection airport and layover duration. Longer connections can increase the overall travel time.

One-stop flights between Seattle and Toronto are available through several major airports in North America.

Common connection points include:

Vancouver
Calgary
Chicago
Denver
Minneapolis

The fastest available route depends on the departure date, airline timetable and connection time. When comparing flights, travellers should consider the complete journey duration rather than only the individual flight segments.

Seattle to Toronto Flight Duration by Route

Departure Airport	Arrival Airport	Route Code	Estimated Flight Time
Seattle–Tacoma International Airport (SEA)	Toronto Pearson International Airport (YYZ)	SEA–YYZ	Around 4 hrs 35 mins–5 hrs nonstop
Seattle–Tacoma International Airport (SEA)	Toronto Pearson International Airport (YYZ) via Vancouver	SEA–YVR–YYZ	Around 6 hrs with one stop
Seattle–Tacoma International Airport (SEA)	Toronto Pearson International Airport (YYZ) via Calgary	SEA–YYC–YYZ	Around 6 hrs 30 mins with one stop
Seattle–Tacoma International Airport (SEA)	Toronto Pearson International Airport (YYZ) via Chicago	SEA–ORD–YYZ	Around 7 hrs with one stop
Seattle–Tacoma International Airport (SEA)	Toronto Pearson International Airport (YYZ) via Denver	SEA–DEN–YYZ	Around 7 hrs 30 mins with one stop

Flight times are approximate and may change depending on airline schedules, aircraft availability, weather conditions and connection duration.

Which airlines fly from Seattle to Toronto?

Air Canada

WestJet

Delta Air Lines

Alaska Airlines

United Airlines

Time Difference Between Seattle and Toronto

Seattle follows Pacific Time, while Toronto follows Eastern Time.

For most of the year, Toronto is generally 3 hours ahead of Seattle. The difference remains consistent during daylight saving changes because both regions adjust their clocks according to their respective schedules.

For example, when it is 12:00 noon in Seattle, it is usually 3:00 PM in Toronto.

Travellers should consider the time difference when planning meetings, arrivals or onward travel arrangements after landing.

Explore More Flight Times & Routes

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.