This is live pricing from Travelpayouts' aggregation of 40+ booking engines. The $512 fare is the cheapest current round-trip from Calgary (YYC) to LIR on United Airlines flight UA550, departing 2026-05-11 at 06:00 with return on 2026-05-14.

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