The aviation industry has changed from a time when flying was considered a special occasion and people wore formal attire when they caught a flight, NBC News reported.
There was a certain status that came with flying, said Janet Bednarek, an aviation historian and professor at the University of Dayton. It was considered glamorous, she said, and flyers treated it the way they treated dress codes in the office.
United Airlines received backlash over the weekend after stopping two girls wearing leggings from boarding a flight. The girls were "pass travelers," meaning they were relatives or friends of an airline employee. United said pass travelers have a dress code to follow, as they are representing the airline.