If you would like to cancel your last minutes flight ticket, you can either contact the airline directly or inform the airline agent at the airport. Before proceeding with the cancellation, you can also let them know the reason and whether you would want an alternative ticket on a different day. If you would like to cancel your ticket, you can either contact the airline directly or inform the airline agent at the airport. Before proceeding with the cancellation, you can also let them know the reason and whether you would want an alternative ticket on a different day.