I have read past posts on this but things are always changing and we have a trip late September to plan for, as many others seem to have too. Our AA/BA flight was just canceled (again) and adjusted this morning to change Geneva to Zurich. Seems BA has been changing flights lately and has limited service to Switzerland now. Times aren't ideal...but at least its booked again without any miles fee or cost fee. Turns out more convenient since we were going to start in Geneva and end in Zurich...but since we were going to go from GVA to Zermatt right away, its faster from Zurich anyway.
Latest Covid test requirements for vaccinated travelers. Seems you need a test prior to arrival if going through London airport (flight change only). I think within 72 hours but there are some mixed signals on PCR vs Antigen for hours before. Then to get back to US its 72 hours (for US...not sure about through UK).
Any recommendations on the right kits to order so we can just do via video at our hotel vs. finding a test site? That are valid for testing getting into the UK and US? Switzerland seems fine for vaccinated so far.