Alaska and Hawaii
Alaska and Texas.
You don't need a passport to fly within the continental US or your birth certificate.
Alaska and Hawaii
Hawaii and Alaska.
That would be Alaska and Hawaii. The continental US are all the states that are connected together and not separated by land mass or ocean. There are 48 states in the continental US. Hawaii is Ocean bound off the Western coast of America and Alaska connects via Canada on the Western side of North America.
None within the continental U.S.
sierra nevada, continental divide
Alaska Hawaii
Alaska, Hawaii
sierra Nevada, continental divide
The Rocky Mountains