Non-U.S. citizens must follow the same travel rules to go to Hawaii as they would the continental United States. However, if you are a U.S. citizen, you may travel to the Hawaiian Islands without worrying about international travel rules, but you must have a current photo ID.
Non-U.S. citizens, including children, must present a current passport upon entering Hawaii. According to the Los Angeles Times, these passport rules also apply to citizens of Bermuda, Canada, Central America, the Caribbean and South America, in accordance to federal rules updated in January 2007.
If you are not a U.S. citizen, you are allowed to stay in Hawaii for a period of up to 90 days with an applicable visa, according to the Los Angeles Times.
Non-U.S. citizens will not be subjected to a medical exam upon entering Hawaii, unless they are traveling from a country in which there is a health epidemic.
According to the Los Angeles Times, non-U.S. citizens older than 21 may bring certain items to Hawaii free of duty, including gifts valued up to $100; 100 non-Cuban cigars and 200 cigarettes; 1 liter of liquor or wine; and up to $10,000. You may not bring any food or plants.
According to the University of Hawaii, snakes are banned from the Islands, as they pose a danger to native plants and animals. Do not attempt to bring snakes of any kind to Hawaii, even if they are pets.