By Air:

Guwahati is well connected by Air and railway to Delhi and Kolkata. Flight time between Guwahati –Delhi is approximately 2.5 hrs. For details and reservation check Indian railways and Indian Airlines website

By Rail:

Journey by train from Delhi may take anywhere from 24 –36 hrs covering a distance of nearly 2000 Km. Rajdhani Express is the best train between Delhi -Guwahati.