Hawaiian Airlines Cancellation Policy 24 Hours is applicable on refundable or non-refundable fares. It means if you are cancel your tickets within 24 hours then you are able to receive full refund. In 7 to 10 days your refund will be transferred to your account if you have purchased your ticket by debit or credit card on the other hand if you have purchased your tickets by cash or cheque then a refund will be issued in 20 days.

https://airlinespolicy.com/cancellation-policy/hawaiian-airlines-cancellation-policy/