The 24-hour rule for Lufthansa refers to the airline's policy allowing passengers to cancel or change their flight within 24 hours of booking without incurring any penalty, provided the booking is made at least 7 days before the scheduled departure. This rule is part of Lufthansa's customer-friendly measures, designed to give passengers a grace period to reconsider their plans after booking a flight. It applies to most tickets, including both domestic and international flights. If changes or cancellations are made within this period, the passenger typically receives a full refund or can modify the reservation without additional fees, though this may not apply to all fare types.