Book Cheap Flights from Toronto with Alaska Airlines
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1 Passenger
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Find round-trip flight deals from Toronto.*
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Toronto (YYZ)to
Seattle (SEA)Oct 1, 2026 - Oct 10, 2026
From
$453
Seen: 1 hour ago
Round-trip
Saver
*Displayed prices have been available within the past 24 hours and may not be available at the time of booking. Fares listed may be Saver fares, which is our most restrictive fare option and subject to additional restrictions. For roundtrip journeys, the price displayed—available within the past 24 hours—is the aggregate of the lowest available fare each way. Additional baggage charges and fees for optional products and services may apply. Other terms and conditions may apply.
One-way flight deals from Toronto.*
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From | To | Fare Type | Dates | Price | |
|---|---|---|---|---|---|
| Toronto (YYZ) | Seattle (SEA) | One-way | Saver | Depart: Sep 22, 2026 | From $245 Seen: 2 hours ago | |
| Toronto (YYZ) | Seattle (SEA) | One-way | Saver | Depart: Jul 5, 2027 | From $283 Seen: 7 hours ago | |
| Toronto (YYZ) | Seattle (SEA) | One-way | Saver | Depart: Sep 11, 2026 | From $304 Seen: 12 minutes ago | |
| Toronto (YYZ) | Seattle (SEA) | One-way | Saver | Depart: Oct 14, 2026 | From $352 Seen: 12 hours ago | |
| Toronto (YYZ) | Seattle (SEA) | One-way | Saver | Depart: Oct 28, 2026 | From $352 Seen: 12 hours ago | |
| Toronto (YYZ) | Seattle (SEA) | One-way | Saver | Depart: Sep 23, 2026 | From $352 Seen: 12 hours ago |
*Displayed prices have been available within the past 24 hours and may not be available at the time of booking. Fares listed may be Saver fares, which is our most restrictive fare option and subject to additional restrictions. For roundtrip journeys, the price displayed—available within the past 24 hours—is the aggregate of the lowest available fare each way. Additional baggage charges and fees for optional products and services may apply. Other terms and conditions may apply.