Is there any commercial air service from TLV (or SDV) to RPN?
I can't imagine. It's a rather small town.
To the best of my knowledge, it's been a while since there has been regular service to Rosh Pina.
There is a small airport at Rosh Pina but I am not sure if it operational right now. I know it has been in use in the past couple of years though I haven't personally used it. When I was there this past summer I seem to recall someone telling me it was not operating then. Perhaps the Israelis on the forum have more up to date info.
The airport in Rosh Pina works only for private flights. There is a commericial service to Haifa from Eilat.