Flights within your home country can be pricey enough, but when you are talking about crossing international waters, it gets a little crazy. I plan to stay in BA for the holidays, what about you guys?
Most Christmases in Texas I spent on the porch in shorts with a bottle of beer in my hand anyway Usually had to go North to see the folks to get any kind of cold weather or a chance of snow...of course, there were the exceptional ice storms that would come in and wreak havoc every once in awhile! Something even in the wintertime here in BA I haven't seen.
I am in Santiago for the moment (and in Chile until January 12). Chile definitely is different from Buenos Aires, though whether it is better I can't say. However I felt the crazyness of Buenos Aires was starting to affect me, so I am glad I could escape it for a while to feel sane again.
Joking aside, usually here but that's my choice as I avoid traveling to the US (esp the northeast where I'm from) in winter. Brrrrrrrr!!! We host Xmas dinner for his family/friends and often we go away for NYE for a few days somewhere within Argentina but this year we're staying here.