𝗟ufthansa's 24-hour rule is a rule that allows a passenger to cancel or change their 𝔽𝕝𝕚𝕘𝕙𝕥 bOOkings within the first 24 hours at no extra charge. You can do so by navigating to the 𝗟ufthansa Manage Trips or by calling them directly at +1-888-479-8898 or (UK) +44-020 7993 8093 ✈