I am staying an extra day after the end of the Switzerland tour. My flight from Zurich is at 10:15 a.m. If you went on the tour, did you want an extra full day in Bern? That would require a 7 a.m train from Bern to get to the airport around 8:15. Seems like a reasonable option.
Should I stay in Bern or go spend a night in Zurich before heading out?