How to Prove Flight Delay Financial Losses

Additional financial loss needs proof of amount and causation.

Start here

Save the original booking, replacement purchase, receipts and written airline decision; do not treat a claimed amount as an award.

1. Check the route and the rule in force on the flight date.
2. Record actual arrival and the carrier’s written explanation.
3. Keep receipts for costs you paid yourself.

What the rights mean

A fixed award isn’t the same as getting a hotel bill repaid. Proven damages and insurance have their own evidence rules, too. Start with the remedy you’re actually claiming.

Your next step

Attach the notice, arrival record, and relevant receipts to a claim through the official airline path. The rule guide can help you explain why you think it applies.

Official sources

• Air passenger rights — European Union / Your Europe; checked 2026-10-31
• International air travel liability limits set to increase — ICAO; checked 2026-10-31