This is live pricing from Travelpayouts' aggregation of 40+ booking engines. The $708 fare is the cheapest current round-trip from Detroit (DTW) to LON on WestJet flight WS1051, departing 2026-09-09 at 17:30 with return on 2026-09-16.

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