This is live pricing from Travelpayouts' aggregation of 40+ booking engines. The $342 fare is the cheapest current round-trip from Porto (OPO) to IST on W4 flight W46108, departing 2026-06-17 at 19:00 with return on 2026-06-20.

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