If you fly shorthaul then you will find that many, if not all, flights are cancelled on Christmas day itself, but that will still leave some crew overseas if your airline has nightstops. Longhaul carries on as usual.
If on the other hand you want a job with leave in the school holidays, weekends off to take the kids to football matches, and shifts that means you get to see the children before bed, then I suggest you sue your careers advisor for whatever your training has cost you, and try something else.
