Traveling from Idukki to Guwahati is a cross-country journey from the southern tip to the northeast. You must first reach Kochi or Ernakulam. From there, you can fly to Lokpriya Gopinath Bordoloi International Airport or take a long-distance train. The train journey is one of the longest in India, crossing several states.
Total Distance: 3200 km by road, 2600 km by air.
This is a very long journey; ensure you have enough supplies.
Flights are the only practical way to cover this distance in a reasonable time.
October to April for pleasant weather.