Jun 19, 2016 - 7:07 PM
Hi 19angie66! Welcome to MySwissAlps.
I suggest you look into the Regional-Pass Bernese Oberland as it provides excellent coverage for the region you'll be exploring. Quite some cable cars and mountain trains are for free. The validity map shows all details. The Jungfrau Travel Pass may be too limited for your plans. Meiringen, for example, is not included. Moreover it only comes 3, 4, 5 of 6 day variants whereas the Regional-Pass has 8 and 10 day variants too.
As the validity maps shows, the Regional-Pass Bernese Oberland won't cover the entire inbound and outbound rides from/to Basel Airport, but part of it. Traveling between Bern and Grindelwald will be covered with a valid pass, so you'd need additional tickets Basel EuroAirport-Grindelwald on your way in. If I were you I'd get an 8 day Regional-Pass and pay the additional full fare for Grindelwald-Basel EuroAirport on the 9th day. I just checked and this would be slightly cheaper than getting a 10 day Regional-Pass and only paying for an additional ticket Bern-Basel EuroAirport.
Of course there are alternatives, such as the Swiss Half Fare Card or the Swiss Transfer Ticket Combi (easier but slightly more expensive than the Swiss Half Fare Card in your case), but these only provide discounts and no free traveling. That doesn't seem to be what you're looking for.