This is live pricing from Travelpayouts' aggregation of 40+ booking engines. The $615 fare is the cheapest current round-trip from Toronto (YYZ) to LON on American Airlines flight AA6917, departing 2026-08-08 at 18:05 with return on 2026-08-12.

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