To tell or not to tell.

I live across the world from my parents but they’re coming for a visit for Christmas, I’m torn if I should wait to tell them in person that I am pregnant (I’d be 11 weeks by then and this will be their first grandchild) or do I tell them earlier over Skype? If I could tell them in person earlier I would prefer that but due to the distance that’s not an option. I’m quite close with my family and would be happy for them to know early, just wondering if y’all think the in person option is worth a solid wait. Help!