Click the Manage Flights link at the top of the Hawaiian Airlines webpage, then click My Trips.
the last name of the traveller and the itinerary number or confirmation code.
Click the Change Flight link that is directly above the trip summary on the itinerary page.
Click Continue after selecting the traveller(s) you wish to switch flights for.
Pick the flights you want to alter. Click "Search for New Flights" after modifying the destination and departure dates.
Choose your next flight.
Click Continue after reviewing the itinerary.
Pick fresh seats.
Click Book This Trip to make a purchase after reviewing the itinerary and seats.
Contact Hawaiian Airlines customer service if you experience a mistake or are unable to modify your travel plans.

Also Check : United Airlines change flight