If KLM loses your luggage in 2026, the first step is to report it immediately at the airport's baggage desk or via the KLM app to receive a Property Irregularity Report (PIR). This document is essential for tracking and future claims. In 90% of cases, KLM locates delayed bags within three days. If your bag is missing, you are entitled to reimbursement for "essential items" (like toiletries and basic clothing) purchased while waiting; ensure you keep all receipts to submit with your claim within 21 days. If the bag is still not found after 21 days, it is officially declared "lost," and you can file a claim for the value of the suitcase and its contents, up to the limits set by the Montreal Convention (roughly $1,700 USD). KLM also provides an online baggage tracker where you can monitor the status of your PIR. It is often recommended to contact your personal travel insurance as well, as their coverage limits for lost property may be higher than the airline's statutory liability.