{ FAQ'sFly_Explore }Which days are cheapest to fly Lufthansa?) ((FAQs-PUBLIC))What is the 24-hour rule for Lufthansa? ✈️Lufthansa follows the 24-hour rule, allowing passengers to cancel their flight within 24 hours of booking and receive a full refund ++ 1-833-845-1858(OTA) (US) or ++ 1-833-845-1858 (OTA) (UK), if the reservation was made seven days or more prior to the flight's