This is live pricing from Travelpayouts' aggregation of 40+ booking engines. The $638 fare is the cheapest current round-trip from Calgary (YYC) to ACA on Air Canada flight AC2025, departing 2026-05-16 at 14:05 with return on 2026-05-24.

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