This is live pricing from Travelpayouts' aggregation of 40+ booking engines. The $444 fare is the cheapest current round-trip from Boston (BOS) to GUA on Copa flight CM312, departing 2026-06-20 at 08:52 with return on 2026-08-14.

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