Way back before Hawaii was a state we flew to Hawaii on a C-54
Douglas C-54 Skymaster - Wikipedia, the free encyclopedia
190 MPH facing the rear of the airplane. It was over 13 hours of flight time.
Un-pressurized at 6,000 feet. My mom was in formal dress with long gloves and high heels. Dad was in uniform of course.
I only remember it seemed to last for days on end and there was no TV or anything to do. Just try to sit there, belted in and be bored. It was torture.