Flights from Seattle to Toronto
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From $413 · Prices update daily
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The quick answer
Flights from Seattle to Toronto start around $413 round-trip. Main carrier: WestJet. Cheapest month to fly: December. Visa-free for US passport holders (Canada).
Price calendar — next 60 days
★ Cheapest: $413 on Fri, Dec 25 · WS
Lowest return fares · Prices update daily · Final price confirmed at booking
Price calendar — Seattle to Toronto
Month-by-month lowest fares. Green = cheapest dates.
Flying to Toronto? Compare from other US cities
Sometimes a nearby airport is cheaper. See Toronto fares from other departure cities.
Canada essentials
🟢 Visa-free for US passport holders · up to 6 months
Visa-free for US citizens; passport required.
Full Toronto visa guide →🆘 Emergency
911
💱 Currency
Canadian Dollar (C$)
🕐 Time zone
UTC−3.5 to −8
🗣️ Language
English, French
🔌 Plugs
Type A/B · 120V
🚗 Driving
Right side
💡 Tipping
Expected — 15–20%
📞 Dial code
+1
🏛️ US Embassy
Ottawa · +1 613-688-5335
Entry rules can change — always confirm with official sources before booking.
Stay connected in Toronto
Skip roaming fees — get a local eSIM before you land. Works in 200+ countries and activates instantly, so you’re online the moment you touch down.
Travel insurance
Protect your Seattle to Toronto trip against delays, cancellations, and medical emergencies. US travelers can compare plans from top insurers.
Airport transfer in Toronto
Pre-book your ride into Toronto. Fixed price, meet & greet, and a driver waiting at arrivals — no meter anxiety after a long flight.
Flight delayed or cancelled?
If your Seattle to Toronto flight was delayed more than 3 hours or cancelled, you may be entitled to up to €600 in compensation under EU/UK rules — even if you flew a non-EU airline. Free to check, no win no fee.
More resources
Seattle to Toronto — frequently asked
How much is a flight from Seattle to Toronto?+
Fares start around $413 round-trip. Prices update daily across 800+ airlines.
What is the cheapest month to fly Seattle to Toronto?+
December typically has the lowest fares.
Are there direct flights from Seattle to Toronto?+
This route is usually served by connecting flights. Use the search above to check for any direct options on your dates.
Which airlines fly from Seattle to Toronto?+
Carriers on this route include WestJet. Compare them side by side in the search above.
Do US citizens need a visa for Canada?+
Visa-free for US passport holders for stays up to 6 months. Visa-free for US citizens; passport required.
What currency is used in Canada?+
The Canadian Dollar (CAD, C$). The emergency number is 911.
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