u/SnikeF

The airline KLM managed to delay our bags for 3 days, which led to expenses >2k USD as there were 4 individuals affected. We've opened a Property Irregularity Report and a refund claim like we're supposed to and have not received a reaction since the creation, 08 April 2026.

KLM also managed to lose one bag completely. Regarding the Montreal Convention it's considered "lost" after 21 or more days. I've opened a second refund claim for this bag on 08 April 2026.

Is there some kind of international law that an airline has to react in a certain timeframe?

Location: Germany / Netherlands / UK (depending on the flight route)

Has anyone had any success with their lost baggage claim? If yes, what did help? I'm currently loosing my mind chatting with the WhatsApp customer service.

KLM has delivered 3 of our bags with a three day delay and lost the 4th one entirely. Our flight was on the 3rd of April, which is long over the 21 day deadline regarding the Montreal Convention.

How long does it take for KLM to process/respond to a claim? Do the "delayed for 21+ days" claims get processed faster?