This is live pricing from Travelpayouts' aggregation of 40+ booking engines. The $133 fare is the cheapest current round-trip from Madrid (MAD) to SOF on W4 flight W46016, departing 2026-10-09 at 22:55 with return on 2026-10-12.

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