Hawaii on a budget: Save money and have fun on Hawaii vacation?! If you like beaches, snorkeling, hikes, then yes! ;) What you pack and wear can add costs for your Hawaii packing list, but you can find cheap (er) flights, hotels (airbnb vacation rentals), food, activities. Find free things to do in Hawaii. Oahu is a good Hawaiian island to choose to save money on travel because of the bus. Travel tips with prices to see if you can go to this USA bucket list destination!