Dec 29, 2016 - 11:53 AM
The easiest way is to just buy such upgrade tickets at manned ticket desk before boarding.
I haven't used the app for upgrade tickets myself yet and the procedure seems to be a bit complicated. At the SBB website, you'll find some information under "Travelcards and Tickets" and "First-class upgrade". As for the app: the renewed app presents an introductory tutorial, so that may help you out. Tutorials are available on YouTube as well.
The general timetable shows expected occupancy for each connection well in advance, so that may help you to decide whether or not an upgrade ticket comes in handy.
I'm not sure if you've ordered your 15 day Swiss Travel Pass Flex yet. If not, please find retailers here. Since you'll be traveling next summer, you can wait a while and see if any interesting promotions come along. If they're available, they'll be announced in our forum and you'll find details here.
Last modified on Dec 29, 2016 - 1:02 PM by Arno