This is live pricing from Travelpayouts' aggregation of 40+ booking engines. The $803 fare is the cheapest current round-trip from Edmonton (YEG) to LON on Air Canada flight AC8143, departing 2026-08-20 at 17:30 with return on 2026-08-24.

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