The 24-hour policy established by Lufthansa enables passengers to modify or cancel their Flight reservations without incurring any penalties or fees. This policy applies to most fare categories, including economy, business, and first class, and can be availed of by contacting Lufthansa's customer service at For USA} And or through their website. It's important to note that reservations made less than 7 days prior to the scheduled departure date are not eligible for the Lufthansa Airlines 24-hour rule.