Know how to cancel an Etihad flight online. Online cancellation is another vital method to cancel their booking. As per Etihad cancellation policy, the passenger can cancel their reservation free of cost within 24 hours of the booking period.If any traveller cancels their booking after the risk-free period needs to pay a cancellation fee which depends upon the fare class and other important factors.If any traveller cancels their tickets within 96 hours of departure, they need to pay an additional 10% cancellation fee to cancel their reservation. Travelers can call the Etihad 1-800-364-9405 toll-free number 24x7 and request cancellation.