This is live pricing from Travelpayouts' aggregation of 40+ booking engines. The $622 fare is the cheapest current round-trip from Montreal (YUL) to ATH on American Airlines flight AA6011, departing 2026-06-15 at 13:03 with return on 2026-06-22.

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