Location of Saha Institute of Nuclear Physics :

This campus is located around 3 K.M. from Ultadanga down the 1st Avenue in Block AF. 

Nearby landmark: 
Calcutta Armed Police Camp (popularly known as "C.A.P camp") Bus Stop on 1st avenue at the 4th island. 
OR
Baisakhi Bus Stop (or Baisakhi Island) on 1st avenue at the 5th island. Water Tank No. 5 is in between these two islands.

How to reach: 
From Ultadanga: Taxi, Bus, Auto rickshaw. 

Take a left turn at the C.A.P. Camp Island or Baishaki Island. Move till you reach the road at the side of the canal. If you are coming from C.A.P. side take a right turn. SINP  campus will be on your right side.
If you are coming from the Baishaki side, take a left turn after reaching the canal side. SINP gate is around 100 meters from that end.

Airport:
Both the domestic and international terminals of Kolkata Airport (Netaji Subhash Chandra Bose International Airport) is situated further North/North-East of Salt Lake. The Airport is more popularly known as Dum Dum Airport. One has to take Nazrul Islam Sarani (erstwhile V.I.P. Road)or Jessore Road from the airport to reach the city. The N.I. Sarani actually originates from near the airport and leads to Ultadanga. The distance from airport to Ultadanga through V.I.P. Road is around 8 K.M. Coming from airport, down the V.I.P. road towards Ultadanga, one has to pass through a place called "Kestopur" (around 5 K.M. from the airport). After Kestopur, till Ultadanga (the rest 3 K.M.),one fringe of Salt Lake City runs parallel to V.I.P. road, de-marketed by a running canal called "Kestopur Canal". Unfortunately no bridge for vehicular traffic is in existence to connect VIP road and Salt Lake over the Kestopur Canal. There are a few foot-bridges. For this reason one has to go tillUltadanga and take a turn to enter Bidhannagar.