Lufthansa offers a 24-hour cancellation rule for flights. According to the Lufthansa Cancellation Policy, you can cancel your reservation within 24 hours of booking without incurring any cancellation fees, provided that your booking was made at least 7 days before the flight's departure date. Contact Lufthansa at 800-645-3880 or 1-844-902-4930 (OTA-Skip Waiting) for more information or assistance. Checkout the link to access the AirlinesPetPolicy blog for more thorough information.