This is actually a worthwhile question for anyone considering joining a particular airline, since it certainly can cause a lot of heartache when you have a young family.
How would your family take to re-rostering "Christmas" to another day as soon as you were home?
My last employment I would ask for a 'request trip' of about ten days that got back to base on the 23rd, rostered days off would cover Christmas, back into the fray for New Year. New York via Europe in mid winter was never a popular trip anyway.