[Travelandtourism] passports

[Julie J.]

I'm hoping that someone on the list can clear up a passport question for 
me. I'm planning on a trip to Alaska with my teenage son in early 
June.   We are flying from Nebraska to Denver and then to Anchorage.  We 
are at no point entering Canada by land or sea.  I checked on the 
necessity of passports and read from several sources that have clearly 
stated that I do not need a passport.  My understanding is that this 
trip is no different than traveling from any other state to state in the 
U.S.  then my father was telling me that a friend of his went to Alaska 
by plane transferring in Seattle and they all needed passports.

So do I need a passport?  And if so  how can I get it in time?  I'm very 
concerned about this and would appreciate your help.
Julie