If circumstances change, you could have to postpone a Hawaiian Airlines flight that you had been looking forward to for months. You are aware of the cost and inconvenience if you have ever had to delay or cancel a Hawaiian Airlines flight. Please use this site if you need to change or cancel a reservation you made with Hawaiian Airlines. Hawaiian Airlines has introduced a 24-hour cancellation policy because they value their customers. Travelers have more advantages & possibilities while making preparations. Travelers may alter or cancel their reservation up to 24 hours after making it, provided they adhere to the airline's 24-hour cancellation policy. If you booked your flight more than 7 days in advance, Hawaiian Airlines will give you a full refund. Hawaiian Airlines reserves the right to modify its 24-hour cancellation policy at any time.