Nov 3, 2016 - 10:14 AM
No problem, you can always and every day from Lauterbrunnen to Jungfraujoch. After 10 december 2016 there is a new timetable in Europa, and also in Switserland. But nothing change on this route.
Reservation or buy tickets in advance is not necessary for this route. You can buy yout ticket in the morning on the Lauterbrunnen railway station.
Only by very nice weather it is worth to go to Jungfraujoch.