That depends on where you're coming from, and your country of citizenship. If you're a US citizen and flying from Los Angeles, it's about as difficult to enter Hawaii as it is to enter Santa Monica. Remember that Hawaii is one of the US of A.
Yes, you generally need a passport to leave the US and enter another country.
No, Hawaii is one of the 50 states.
Hawaii is one state of the United States, and has the same passport requirements as entry to any other part of the US. If you are a US resident, and traveling to Hawaii, then you would not need a passport any more than if traveling to North Carolina. If you are NOT a US resident, then same passport rules apply as to entry to any other part of the US. Aloha
You only need a valid passport to enter Mexico.
yes
when does a us citizen need a passport to drive to Canada
Yes, now you must have a passport to leave or enter the US.
Since Guam is part of the Unites States Teritory then no, not necessarily unless needed by the airline that you are to use for the travel. However, if you are not a US citizen then you need a passport to enter together with your Visa unless stated otherwise by their law and ntrance requirement.
Hawaii is a US state - if you don't need a passport to go to Nevada or Michigan, you don't need a passport to go to Hawaii.
No. Both are in the United States. You do not need a passport to travel from state to state.
No, you cannot enter the US without a passport.