What is the earliest time in the morning that the trains run in this region? Or do they run 24 hours a day. Let’s say that we need to arrive at the Zurich airport by 7:30 am and we are starting from Wengen.
You will find all schedules, as always, on www.sbb.ch
But if you have to be at ZRH at 7:30 (but do you? When is your flight?) you will need to travel the day before.
Flight is at 9:50
You won’t be able to make a 9:50 flight from Wengen, as trains don’t start running until after 5 am. You’ll need to stay at the Zurich airport or somewhere close by the night before. We always schedule flights after noon if trying to make it to the airport from the mountains.