This is live pricing from Travelpayouts' aggregation of 40+ booking engines. The $91 fare is the cheapest current round-trip from Porto (OPO) to PAR on Ryanair flight FR4637, departing 2026-09-18 at 21:35 with return on 2026-09-21.

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