Route guide
Cheap Flights from Seattle to Toronto: Book Airline Tickets
- Distance
- about 2,050 mi
- Typical flight time
- 4 h 15 min – 5 h 15 min
- Airports
- 1 × 2
- Time difference
- 3 h ahead
This page covers the practical side of flying between Seattle and Toronto: which airports to compare, how long the trip takes, and when it is busy. It works for either direction. For a price on your dates, ask a specialist.
Quick answer: Seattle to Toronto is about 2,050 miles (3,300 km) and a typical flight takes 4 h 15 min to 5 h 15 min. Toronto is 3 hours ahead of Seattle. Seattle has 1 airport to compare and Toronto has 2.
Airport pairs to compare
Seattle's airport is connected to downtown by light rail, which makes arrival simple even at busy times. Toronto has a large main airport west of downtown and a small island airport close to the city center.
| Pair | Departure airport | Arrival airport |
|---|---|---|
| SEA to YYZ | Seattle-Tacoma International | Toronto Pearson International |
| SEA to YTZ | Seattle-Tacoma International | Billy Bishop Toronto City |
About the airports
- SEA · Seattle-Tacoma International
Connected to downtown by Link light rail. - YYZ · Toronto Pearson International
The main airport, west of downtown, with a direct express train. - YTZ · Billy Bishop Toronto City
A small airport on the waterfront close to downtown.
Airlines with a major base at either end
- At Seattle: Delta Air Lines, Alaska Airlines
- At Toronto: Air Canada
Airlines with a base at one end often connect through their hub. A specialist can compare nonstop and connecting options on your dates.
When to go and what to expect
Seattle
July through September is the driest and busiest period. From November to March it is rainy, and fares are often lower.
Toronto
Summer and early fall are the most popular. Winters are cold and snowy, and flights can be delayed by weather.
International trip: you will need a valid passport, and possibly a visa or entry authorization. Our international checklist covers what to check.
How long is Seattle to Toronto?
At about 2,050 miles, Seattle to Toronto is a long domestic-style flight of several hours. Meal options, seat choice and baggage rules matter more on a trip this long, so compare the full total rather than just the base fare.
Time zones and timing
Toronto is 3 hours ahead of Seattle, so you land at a local time 3 hours later than departure time plus flight time would suggest. Plan your arrival day around local time at the destination. Check the arrival date on any overnight itinerary, since it can differ from the departure date.
Getting between the airport and town
Seattle: Link light rail runs from the airport to downtown in roughly 40 minutes.
Toronto: The UP Express train runs between Pearson and Union Station in roughly 25 minutes.
Planning ground transport too? See our car rental guide.
Good to know
- Check every airport pairing when you compare fares. Schedules and airline options can differ between them.
- Alaska cruises depart from the city roughly from spring through early fall, which can lift demand and hotel prices at that time.
- U.S. citizens need a passport to fly to Canada. Check entry requirements before you travel.
- International travel: check passport, visa and entry rules well before you pay. See our international checklist.
- U.S. citizens need a passport to fly to Canada. Check entry requirements before you travel.
- Compare the total with bags included, not just the base fare. See baggage fees and taxes and fees.
Flying Toronto to Seattle?
This route guide works in both directions. For other trips, see all flights from Seattle or all flights from Toronto.
Frequently asked questions
How far is Seattle from Toronto?
The straight-line distance between the main airports is about 2,050 miles (3,300 km). Routes can be longer in practice because of air traffic and weather.
How long is a flight from Seattle to Toronto?
A typical scheduled flight takes roughly 4 h 15 min to 5 h 15 min in the air, depending on winds, the aircraft and the airports. Connecting itineraries take longer, and nonstop availability depends on the airline and dates.
Which airports can I use?
At Seattle: SEA (Seattle-Tacoma International). At Toronto: YYZ (Toronto Pearson International), YTZ (Billy Bishop Toronto City). Ask for prices on more than one pairing.
Is there a time difference?
Toronto is 3 hours ahead of Seattle.
When is the best time to fly from Seattle to Toronto?
In Seattle: July through September is the driest and busiest period. From November to March it is rainy, and fares are often lower. In Toronto: Summer and early fall are the most popular. Winters are cold and snowy, and flights can be delayed by weather. Fares are usually highest in the busy periods described for each city, so flexible dates can help.
Which airlines should I compare for Seattle to Toronto?
Airlines with a major base at either end include Delta Air Lines, Alaska Airlines and Air Canada. A specialist compares them with other carriers on your dates, since schedules and availability change.
Do you show fares on this page?
No. Fares change constantly, so we do not publish prices that might be out of date. A specialist checks live availability and confirms the full total, including taxes and bags, before you pay.
What documents do I need?
A valid passport is required. Entry rules depend on your citizenship, so check the official guidance for the destination. See our international checklist.
Route details updated October 18, 2026.