This is live pricing from Travelpayouts' aggregation of 40+ booking engines. The $40 fare is the cheapest current round-trip from Barcelona (BCN) to MIL on W4 flight W46330, departing 2026-06-12 at 22:25 with return on 2026-06-15.

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