All checked and carry-on bags leaving Hawaii for the US mainland, Alaska and Guam must be inspected by a US Department of Agriculture (USDA) x-ray machine at the airport.
The majority of incoming flights from overseas and the US mainland arrive at Honolulu International Airport on Oʻahu. Flights to Lanaʻi and Molokaʻi usually originate from Honolulu or Maui.
The main Neighbor Island airports include the following:
Hilo International Airport East Hawaiʻi (Big Island).
Kona International Airport at Keahole West Hawaiʻi (Big Island).
Lihuʻe Airport Kauaʻi.
Molokaʻi Airport Molokaʻi.
Hawaii is a competitive market for US domestic and international airfares, which vary tremendously by season, day of the week and demand. Competition is highest among airlines flying to Honolulu from major US mainland cities, especially between Hawaiian Airlines and Alaska Airlines, while Allegiant Air serves smaller US regional airports.
The ʻlowest fare' fluctuates constantly. In general, return fares from the US mainland to Hawaii cost from $400 (in low season from the West Coast) to $800 or more (in high season from the East Coast). Pleasant Holidays offers competitive vacation packages from the US mainland.
Offered by major airlines and online travel booking sites, vacation packages that include airfare, accommodations and possibly car rental, tours and activities may cost less than booking everything separately yourself. Pleasant Holidays and Apple Vacations offer competitive vacation packages from the US mainland.