How to file an EU 261/2004 compensation claim with KLM: the official channel, the deadline, and where to escalate if they don't respond.
If your flight (departing the EU, or arriving in the EU on an EU carrier) was delayed 3+ hours, cancelled, or overbooked and it wasn't an extraordinary circumstance, EU 261/2004 entitles you to EUR 250-600 per passenger.
Use KLM's official channel above. Include your booking reference, flight number and date, and your bank details.
Claim within 2 years (the NL limitation period for EU261).
If KLM rejects or ignores your claim, you can take it (free) to:
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