One of The Oldest Passenger Train of Northeast Frontier Railway 15703 / 04 New Jalpaiguri - Bongaigaon Express is an Express train belonging to Indian Railways Northeast Frontier Railway zone that runs between of Siliguri, West Bengal and Bongaigaon of Assam in India.
It operates as train number 15703 from to Bongaigaon and as train number 15704 in the reverse direction serving the state of West Bengal and Assam.
The train starts from Bongaigaon at 06:25 everyday and reaches at 16:15.The train starts from at 07:30 everyday and reaches Bongaigaon at 15:55. The train covers total distance of 253 Kilometres.
Siliguri Loco Shed - based WAP-7 electric locomotive hauls the train from to Bongaigaon and vice versa.
The train shares its rake with New Jalpaiguri -Malda Town Express.