How to get to Azeri exclave of Nakhchivan

I'm reading a Lonely Planet travel guide that briefly covers every nation on Earth. I was on Azerbaijan and wondered how Azeris travel from the "mainland" to its exclave of Nakhchivan, since they're separated by Public Enemy Number One-- Armenia.

So I asked our resident Azeri, Tarlan. He tells me that the Azeri government has heavily subsidized air tickets from Baku to the exclave for $30-$35US one-way. The plane does not fly over Armenian airspace. And if you prefer to travel by land, there is a roadway through Iran that connects mainland Azerbaijan with Nakhchivan.

Incidentally, Tarlan is working as a marshal this weekend in Sector 2 of Abu Dhabi near the pit exit. This is the third race he's worked in 2016 (Bahrain and Azerbaijan being the first two)!