Prove the complete itinerary
Keep the booking confirmation showing all sectors. The assessment should use the first departure and final booked destination, together with the carriers operating each sector.
Document the replacement journey
The airline may need to reroute you and provide care during the wait. Record replacement flight numbers, overnight accommodation and actual final arrival.
Calculate the final-arrival impact
Under current EU guidance, a protected missed connection can support compensation when the final destination is reached more than three hours late, subject to coverage and cause.
Documents to prepare
Booking confirmationBoarding passAirline messagesActual arrival timeExpense receiptsPassenger details
Before sending the request
State the remedy clearly. Fixed compensation, reasonable expenses, reimbursement and rerouting are separate requests even when they arise from the same disruption.