The average person should budget $5000 - $10,000 per person for 10 days in Hawaii if they plan on island hopping. This breaks down per person as follows:
Flights to/from Hawaii: $500-$1000 Inter-island flights (3 total): $150-$300 Food & Drinks: $500-$1000 Accommodation (1-2 people): $3000-$6000 Transportation: $250-$500 Tours / Activities / Misc: $600-$1000