Jun 22, 2017 - 3:57 PM
in reply to Norfolkite
Hi Norfolkite and welcome to MySwissAlps!
It depends on which gondolas you are referring to in that area. Your best bet would probably be the Jungfrau Travel Pass - you can read about where it is valid here.
The Swiss Half Fare Card is a good option as well - it will give you 50% off all trains, gondolas, boats etc. within Switzerland (none are free) but you will get a discount as you said on the train from (Zurich?) airport. The only drawback here is you still have to buy a ticket for every trip you make.
Lastly, you could look at the Swiss Travel Pass which will cover all trains and many but not all gondolas (and boats etc) in Switzerland. Some areas are only discounted though - so be sure to read the where it is valid page before you decide. It may be more than you need if you are just taking a few gondolas in the Grindelwald area and just the train to/from the airport though.
I hope that helps with your decision!