To change a flight on Hawaiian Airlines, go to their website and log in to My Trips using your confirmation code and last name. Click “Change Flight”, review available options, and pay any fare difference if applicable. Hawaiian generally does not charge change fees for Main Cabin and higher fares, though Basic fares are more restrictive. If you booked through a third-party site, you’ll need to make changes through them. You can also call customer service for assistance with complex itineraries or award bookings.