The better part of 3 days of travel. With travel delays, cancellations and any other possible thing that can go wrong. We decided it prudent to leave a day early...complete our domestic flights in one day, then spend the night...get a good nights sleep before attempting our 2 international flights. It has been many years since we have traveled to Europe and this was well before Covid...so its been an epic adventure trying to navigate each countries latest restrictions and battle the technology age of digital information, tickets, reservations and such. Remember we are old fuddy duddies who yell at our computers and phones in futile attempts that it will hear us and do what we need! We had a small emergency in both our domestic and international flights. Someone (we won't name who because its too humiliating to say it was me) left her fanny pack (containing only my important documents...passport, ID, vaccine card, credit card and hubby's international drivers license) on our 1st flight as we sprinted to our next flight some 3 concourses away! Hubby sprinted back to the old gate and I huffed and puffed my way to the next flight in the hopes of delaying them long enough to make our flight. We got lucky twice that day...his international DL was in my fanny pack so they allowed him to retrieve our documents and our next flight was delayed 30 minutes...so we both got our cardio in for the day!! We also never splurge and travel in anything other than economy, but decided if we ever would...this would be the time! So Business Class Swiss Air was our choice. We were pleasantly surprised. The business lounge in Boston was spacious, comfortable, quiet with most amenities you could wish for...including a private entrance to board (no more gate crowds). The seats were rooming and so much room for your legs, I could not touch the seat in front of me! Dinner service started with a linen covered table and a very tasty well rounded meal. Breakfast was similar, but had to feel my way through my chair ate my glasses sometime during the night! Because the chairs recline into beds there is no open space underneath, somehow my glass fell between the desk and bed portion and managed to get wedged underneath. No one could get them out including a very determined stewardess who spend 20 minutes on the floor. So in Zurich, we waited after everyone deplaned and maintenance came and saved the day. Amazingly enough, they were not damaged at all. Interesting side note for any future European travelers out there...the European country you enter first (even if its just a plane change) is the one where you will do immigration and get your passport stamped- there is no customs check. So our big Italy trip has only a Zurich Switzerland stamp :/