Air
Purnea Airport located within the cantonment area has sporadic flights to Patna and Kolkata. The nearest commercial airport is about 150 km away at Bagdogra.
Rail
Purnia railway junction is situated on Katihar-Jogbani broad gauge railway line of North East Frontier Railway (NFR). The railway line earlier was metre gauge. Another metre gauge line of East Central Railway (ECR) connects Purnia with Saharsa via Banmankhi. Conversion of the 36 km long Purnia-Banmankhi stretch in Purnia-Saharsa section to broad gauge is likely to be completed in 2013. There are daily and weekly trains to Kolkata, New Delhi and other neighboring cities.
Road
National Highways NH 31, NH 57 and NH 107 give access to the other states and cities, where state highways connect the neighboring cities and villages. The east-west corridor connecting Silchar in Assam to Porbandar in Gujarat passes through Purnea. It is a modern six-lane highway constructed by NHAI (National Highway Authority of India). State Highways 62, 65 and 77 also pass through Purnea.
Intra-city Transport
A large number of cycle-rickshaws, auto-rickshaws and city buses serve the city
