This is live pricing from Travelpayouts' aggregation of 40+ booking engines. The $399 fare is the cheapest current round-trip from Zurich (ZRH) to AMS on KLM flight KL1924, departing 2026-07-17 at 17:35 with return on 2026-07-19.

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