score:6
There is no direct bus from the Airport to Lake Bohinj. Having said that you already had the answer by yourself but maybe where looking at the wrong place.
The bus from the Airport is going first to Kranj where you have to change to the bus to Bohinj.
First Bus going to Kranj, second from Kranj to Bohinj.
If you want to double check or just get times for the specific date you are travelling you can head over to the Alpetour's site and search in two steps first for the bus to Kranj and then from Kranj to Bohinj. On their site they refer to the airport as "Letališče Brnik" (Airport Brnik) which is the "old" name for the airport and also the nearest town Brnik.
Letališče Brnik = Airport, Kranj AP = Kranj Bus station, Bohinj Jezero = Bus stop at the lake, btw. there is a faster and a slower bus to Kranj
People in Slovenia are very friendly and helpful. Also most of them are speaking pretty good english, so you won't have any serious language troubles.
Don't forget to look outside the window while travelling with the bus. The landscape at this part of Slovenia is one of the most beautiful, especially in spring!
Upvote:2
Forgive me for not directly answering your question, I want to offer some alternatives to the particular solution you're seeking. To be honest you seem to have done most of the work to answering your own question already!
First off, Ljubljana is a lovely city with things worth seeing and a decent nightlife, is there any reason you don't want to head there from the airport, spend a night there, then continue on to Bled (essentially use the Google-suggested route, but make it enjoyable)? How tight is your travel schedule?
Secondly, I found Slovenia to be a pretty friendly country when I was there, so you might want to even think about hitch-hiking. There's quite a hitching culture in much of Europe, centered in particular on Germany, but I think you'd go well in Slovenia too.
Depending on your personality (and their English!), it can even be possible to make friends on the flight or at the airport, and score a ride with someone leaving the airport in your direction. I've saved myself the cost of a bus fare many times with this - all it takes is the courage to ask, or better yet approach strangers and ask.
Finally, there exists a kind of middle-ground between road-side hitching and paid transport, the glorious Mitfahrgelegenheit, or its english equivalent, carpooling.co.uk. I'm not sure what your travel dates are, but my search turned up someone driving from Ljubljana to Kranj with three spare seats on the 11th of May.
Upvote:4
I found it easy to get around Slovenia on the bus, despite not speaking the language.
We didn't travel directly from the airport to the lakes but got a bus into Ljubljana. The next day we got a bus from Ljubljana bus station to Bled, where we stayed for two days. Then we got another bus to Bohinj. After that we got another bus back from Bohinj to the airport. I think we had to change buses on the way back but that was straightforward - there are lots of signs and timetables at all the stations, and the drivers were pretty nice to us.
The timetables we used were on this site: Avtobusna postaja Ljubljana