Originally Posted by
JanoSicek
I would only add a possibility of routing BOS-JFK-GVA on LX, which might offer you better schedule when you fly to Europe (no transfer in the very morning for you, you will arrive directly to your destination). And JFK-GVA has the 333 plane with new C and new F.
So maybe you can consider BOS-JFK-GVA // GVA-ZRH-BOS
That would be convenient, but I'm afraid there are no *A flights between BOS and JFK. You'd have to switch between EWR/LGA to JFK, and that might non be so fun.