Direct (nonstop) flights from Seattle to Toronto
2 airlines fly nonstop from Seattle Tacoma International (SEA) to Pearson International (YYZ). It's 2,060 miles (3,316 km), about 4h 45m in the air. Operated by Air Canada, Alaska Airlines.
Air Canada
Alaska Airlines
Route data last updated: May 26, 2026
Airlines with non-stop flights
AS
Alaska Airlines
Alternative Routes
Other ways to fly from Seattle to Toronto with one stop · direct emits 348 kg CO₂ per passenger
Looking for the return flight?
YYZ → SEA: Flights from Toronto to SeattleOther direct flights from Seattle
Direct flights from Toronto (YYZ)
Frequently Asked Questions
How long is the direct flight from Seattle to Toronto?
A nonstop flight from Seattle (SEA) to Toronto (YYZ) takes approximately 4 hours and 45 minutes. The distance is 2,060 miles (3,316 km).
Which airlines fly nonstop from Seattle to Toronto?
2 airlines: Air Canada, Alaska Airlines.
Is there a nonstop flight from Seattle to Toronto?
Yes. 2 airlines: Air Canada, Alaska Airlines.
How far is Seattle from Toronto?
The flight distance from Seattle to Toronto is 2,060 miles (3,316 km), measured as the great-circle (shortest air) distance. That's roughly the same distance as New York to Los Angeles.
What is the time difference between Seattle and Toronto?
Toronto is 3 hours ahead of Seattle. (America/Los_Angeles vs America/Toronto.)
What type of aircraft flies from Seattle to Toronto?
At 4h 45m, this route typically uses narrow-body or mid-range jets — Boeing 737 MAX or Airbus A320neo. Varies by airline.
Do I need a visa to travel from USA to Canada?
Depends on your passport. Check with the Canada embassy or an official visa portal before booking — requirements change.
What is the carbon footprint of a flight from Seattle to Toronto?
Roughly 348 kg CO2 per passenger one-way. That's about the same as driving 1,740 km.
Is the return flight from Toronto to Seattle also nonstop?
Yes — nonstop flights run both ways. Flight time may differ slightly due to wind patterns.
When is the cheapest time to fly from Seattle to Toronto?
Midweek flights (Tue/Wed) outside holiday peaks are usually cheapest. 3-6 weeks ahead is a good window for this route. Use "Check Prices" above to compare.
How early should I arrive at Seattle Tacoma International for this flight?
3 hours before departure for international flights. You need time for check-in, security, and immigration.