Swiss pass

• Should we buy a 4 days or 8 days
• Can we buy the pass at Zurich airport , our flight reaches at around 8:00AM
• Can the pass be used to get discounted fare in Glacier trains and which would be best for us since we are in luzern

Hi Manoj, and welcome the the forum. If you intend to travel throughout the country with Lucerne as your base, I assume you'll be making quite some long and expensive train trips. In that case an 8 day Swiss Saver Pass would definitely be the best option. If there are some days with shorter local trips as well, a Swiss Saver Flexi Pass is a good alternative. In both cases, children under 16 will travel along for free with the free STS Family Card.

Purchase options can be found on both pages I linked to; just fill out your country of residence and other data in the upper right corner. You'll also find links to downloadable maps of validity there, showing the coverage of the passes. The Glacier Express is included in a Swiss Pass, meaning that the trip itself is for free, but you will have to pay separately for seat reservations. It's quite a detour to make this trip from Lucerne. You can use the timetable to plan such trips. The Golden Pass train to Interlaken, Zweisimmen and Gstaad would be easier in your case.