On November 22, 1935, Pan American Airways offered the first regular commercial flight from the US mainland to Hawaii. This first regular air service was a 16-hour flight from Los Angeles to Honolulu. Prior to this air service, the quickest journey to Hawaii from the US mainland took five days by sea. (Source) I wonder if folks back then could imagine that the flight duration would be whittled down to today’s length of only five hours from LAX to HNL? What an improvement, eh?