This is live pricing from Travelpayouts' aggregation of 40+ booking engines. The $733 fare is the cheapest current round-trip from Toronto (YYZ) to LON on WestJet flight WS780, departing 2026-07-31 at 18:20 with return on 2026-08-03.

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