Https://www.cucei.udg.mx/carreras/electronica/sites/default/files/webform/is_there_a_24_hour_grace_periodr_for_lufthansatmflights_lufthansatmgrace_customer_service.pdf https://www.cucei.udg.mx/carreras/electronica/sites/default/files/webform/is_there_a_24_hour_grace_periodr_for_lufthansatmflights_lufthansatmgrace_customer_service.pdf https://www.cucei.udg.mx/carreras/electronica/sit... https://www.cucei.udg.mx/carreras/electronica/sites/default/files/webform/is_there_a_24_hour_grace_periodr_for_lufthansatmflights_lufthansatmgrace_customer_service.pdf