To book with HawaiianMiles, log into your Hawaiian Airlines account on their website. Choose your route and travel dates, then select the “Pay with Miles” option during booking. You’ll see available award flights, which are priced based on demand and distance. If you don’t have enough miles, you can pay part cash and part miles or transfer points from partners like American Express Membership Rewards or Marriott Bonvoy. Keep an eye out for Saver Awards, which offer the best value. Booking early usually gives you more options and lower mileage rates.