National Highway 47, commonly referred to as NH 47, is a long highway connecting the city of Salem to Kanyakumari town in southern India. The highway runs through the states of Kerala and Tamil Nadu. The important towns are Salem, Palakkad, Thrissur, Alappuzha, Kollam, Thiruvananthapuram, Nagercoil and Kanyakumari. The NH 47 runs within a few kilometers of Coimbatore International Airport (within Coimbatore city limits), Cochin International Airport (Nedumbassery) and the Thiruvananthapuram (Trivandrum) International Airport.