https://opendata.utah.gov/nominate/228252

Yes, Hawaiian Airlines allows passengers to cancel their flight within 24 hours of booking without penalty 𝟏-𝟖𝟑𝟑-𝟒𝟔𝟎-𝟏𝟖𝟑𝟖 if the ticket is purchased at least one week before departure. Passengers can receive a full refund for refundable tickets, and non-refundable tickets can be changed or canceled without a fee or call at 𝟏-𝟖𝟑𝟑-𝟒𝟔𝟎-𝟏𝟖𝟑𝟖 but the passenger will receive a travel credit instead