How should I reply to a denied claim?

Identify the disputed fact or rule, attach missing evidence and ask the airline to explain its reason, exemption and calculation in writing.

What to check

Keep the first claim, case number, airline reply, and any new evidence together. That makes it easier to ask a focused follow-up question or use the right complaint channel.

What to do next

Use the appeal guide to answer the airline’s actual reason, not just repeat the original request.

Official sources

• European Union / Your Europe: Air passenger rights
• U.S. DOT: File a Consumer Complaint
• Canadian Transportation Agency: Air travel complaints