The 24-hour rule for Lufthansa generally refers to the airline’s online check-in policy, which permits passengers to check in starting approximately 23 to 24 hours before their scheduled flight departure time. This timeframe is intended to give travelers enough time to select or change seats, update travel documentation, and obtain boarding passes in advance, helping to avoid last-minute issues at the airport. The check-in window closes one hour before departure for most international flights and 40 minutes before for European flights. This rule allows Lufthansa to ensure compliance with immigration and security regulations by verifying passenger information and travel documents during the check-in process. Passengers are encouraged to check in online within this window for a smoother airport experience and to maximize seat selection opportunities. Certain exceptions may apply based on the fare type or destination, so reviewing the specific conditions of your ticket and flight details is important. In addition, the 24-hour rule enables the airline to manage passenger flow efficiently and prepare for boarding in an orderly manner, which is especially important on busy routes and during peak travel seasons.