When I was interviewing cabin crew for a feature on how to pack a carry-on, every air hostess I spoke to told me that what you wear to the airport can influence whether you get upgraded or not. The idea of dressing up for a flight might seem terribly outdated (why would you want to wear anything but stretchy pants for a 10-hour flight, right?), but according to these flight attendants, dressing smartly can increase your chances of getting bumped up to first class.
I personally think that comfort is the main priority when travelling and see no problem with flying in trainers and tracksuits. However, I was intrigued by what an "upgrade outfit" looks like. When trying to move up to business class, two other factors help: travelling alone and being part of the airline's frequent-flyer programme. Apparently, so does making an effort in the fashion stakes. "It definitely helps your chances," one air hostess admitted. "When we fly, we have a strict dress code to follow. No jeans or trainers—so I always go for tight black trousers and a blazer or a dress. For men, chinos or trousers and a shirt are worn."