This is live pricing from Travelpayouts' aggregation of 40+ booking engines. The $458 fare is the cheapest current round-trip from Seattle (SEA) to YTO on Air Canada flight AC8801, departing 2026-08-14 at 05:50 with return on 2026-08-18.

Clicking "Book this flight" opens Kiwi.com with this exact flight pre-filtered — same airline, same dates, same passenger count.