Upvote:3
The official site has:
Inter-terminal transport facility is available on arrival, at Chhatrapati Shivaji International Airport. It is a dedicated paid Inter Terminal Taxi service available at T1B and T2, on chargeable basis.
There are 2 options of cars with fixed rate as follows:
T1B to T2
Sedan – Rs. 245
SUV – Rs. 750T2 to T1B
Sedan – Rs. 230
SUV – Rs. 750The counters are located at T1B - Inter-Terminal counter at Arrivals, next to Coffee & more. T2 – Level 2 International Arrival beside the Prepaid Taxi counter, next to Makemytrip counter.
Contact details:
T2 Inter-Terminal Counter - (022) 65882672
T1B Inter-Terminal Counter - 8767350021
There did used to be a free bus service, but it seems no longer.