This is live pricing from Travelpayouts' aggregation of 40+ booking engines. The $564 fare is the cheapest current round-trip from Calgary (YYC) to BOS on American Airlines flight AA2389, departing 2026-07-08 at 13:53 with return on 2026-07-10.

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