This is live pricing from Travelpayouts' aggregation of 40+ booking engines. The $861 fare is the cheapest current round-trip from Calgary (YYC) to SIN on WestJet flight WS133, departing 2026-08-17 at 21:55 with return on 2026-08-23.

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