I'm 17 and am thinking about traveling to Hawaii alone next summer?

Airfares can vary greatly between now and next year and whether you're traveling from a hub airport or need a couple transfers to get here bumps up the price. Just go on Travelocity or one similar and price it out for airfare and hotel to get a better idea coming from where YOU live. Most of the car rental companies will NOT rent to someone under 25 unless they're married or have an older co-signer. Many hotels do not have much parking and the ones that do charge a lot for daily parking fees. You don't need a vehicle to get around though. We have an awesome bus system on Oahu that will take you anywhere on the island.