Booking with HawaiianMiles online is straightforward. Go to the Hawaiian Airlines website, log into your frequent flyer account, and choose the “Book” option. When searching for flights, check the box that says “Pay with Miles.” You’ll then see available award flights along with the mileage required for each. Once you select your preferred flight, follow the normal booking process to confirm your ticket. If you don’t have enough miles, you can use a mix of miles and cash, or transfer points from partners like American Express or Marriott Bonvoy to top up your balance.