Take a flight from Ahmedabad to Guwahati..... From Guwahati, you will have MTC buses to Shillong from 6AM till 5PM. The travel time is around 2:30hrs. Places to visit: Shillong
Dawki
Cherrapunjee
Nohkalikai Waterfalls
Living Root Bridges
Mawlynnong
Nongriat