This is live pricing from Travelpayouts' aggregation of 40+ booking engines. The $180 fare is the cheapest current round-trip from Sofia (SOF) to ZRH on LOT Polish flight LO634, departing 2026-10-15 at 18:45 with return on 2026-10-19.

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