This is live pricing from Travelpayouts' aggregation of 40+ booking engines. The $418 fare is the cheapest current round-trip from Miami (MIA) to SJO on Avianca flight AV605, departing 2026-09-01 at 14:15 with return on 2026-09-08.

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