It’s everyone’s dream to receive a free upgrade on their flight – but there’s a few things you can do to get a little closer to that dream becoming a reality, according to flight attendants.

As well as ways to charm the flight attendants into possibly giving you a freebie, there are some things you should absolutely avoid.

These are not just because they’ll put you on the wrong side of the staff, but also because they could be unhygienic and run the risk of you catching…