Passengers, Lufthansa Airlines follows the 24-hour rule.The 24-hour rule with Lufthansa allows passengers to cancel their flight reservation within 24 hours of booking without facing any penalty fees. do it from their website or their customer service.
For more info,visit the visit airflyreservations website. or get their customer service at 1800 102 5838 or -1-888-829-1330 (OTA Skip-Waiting).
https://www.airflyreservations.com/blog/what-is-lufthansa-rule