I arrived from Coimbatore flying Air India. There was no indication on my ticket that I was flying out of the international terminal and had I not checked in, even tho I already had my boarding pass, which did not mention which terminal, I would have not figured out that because my flight wasn’t listed I was at the wrong terminal. I was directed to the shuttle after being told the gate had been changed. The shuttle driver pointed to the sign for the shuttle and said, “5 minutes” which I knew I couldn’t trust so I took the confusing walk due to all the construction. During this long walk, I did not see the shuttle go by. The connecting flight was already boarding by the time I got there. VERY POOR COMMUNICATION.