Transport is one of the most important issues when you plan to go somewhere. So... And how to reach Nakhchivan?!
You can come to Nakhchivan by planes and buses. Nakhchivan International Airport is one of the biggest and modern airports of the country. There are Baki-Nakhchivan, Nakhchivan-Ganja-Istanbul, Nakhchivan-Moscow flights.
Look at this: http://www.airportnakhchivan.az
3 customs checkpoints operate in the autonomous republic. Two of them (Julfa and Shahtakhti) are located on the border with Iran Islamic Republic and the third one (Sederek) is located on the border with the Republic of Turkey.
Public transport is provided by buses and taxis. You can use these vehicles services at any time of the day.