This is live pricing from Travelpayouts' aggregation of 40+ booking engines. The $409 fare is the cheapest current round-trip from Barcelona (BCN) to AER on W4 flight W46020, departing 2026-06-12 at 21:45 with return on 2026-07-03.

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