This is live pricing from Travelpayouts' aggregation of 40+ booking engines. The $401 fare is the cheapest current round-trip from Zagreb (ZAG) to BRU on OU flight OU4456, departing 2026-07-15 at 18:00 with return on 2026-07-16.

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