Rajdhani express are premium category trains by the Indian Railways that redefines luxury travelling in India. It is a fully air-conditioned train which connects country capital (Delhi) with state capitals. That is why they are called 'Rajdhani' which translates to 'Capital' in English. These train runs at very high speed and therefore it usually takes least time to reach destination compared to other trains on the same route. Mumbai rajdhani is the fastest rajdhani train which attains a maximum speed of 140 kmph on some stretch. Rajdhani Express offers catering facilities inside the train the fare of which is included in ticket fare. Rajdhani trains have 3 classes - First AC (1A), AC II-tier (2A) and AC III-tier (3A) only and they are coupled with LHB coaches that have higher safety features. The ticket fare for Rajdhani is maximum amongst all trains on the same route and has dynamic fare (Flexi Fare) system. Waitlisted passengers are strictly not allowed inside this train. Rajdhani train coaches are usually painted in red with a grey colored strip outside. 3 rajdhani trains run from Delhi to Guwahati - DBRT RAJDHANI (12424), AGTL TEJAS RAJ (20502) and DBRG RAJDHANI (20504).

Delhi to Guwahati DBRT RAJDHANI (12424) departs from New Delhi station (NDLS) at 16:20 and arrives Guwahati station (GHY) at 19:25. Delhi to Guwahati rajdhani fare is Rs.5950 in First AC, Rs.3610 in Second AC and Rs.2610 in Third AC for this train which includes meal charges also.

Delhi to Guwahati AGTL TEJAS RAJ (20502) departs from Anand Vihar Trm station (ANVT) at 19:50 and arrives Guwahati station (GHY) at 03:20. Delhi to Guwahati rajdhani fare is Rs.6300 in First AC, Rs.3840 in Second AC and Rs.2775 in Third AC for this train which includes meal charges also.

Delhi to Guwahati DBRG RAJDHANI (20504) departs from New Delhi station (NDLS) at 11:25 and arrives Guwahati station (GHY) at 18:25. Delhi to Guwahati rajdhani fare is Rs.6145 in First AC, Rs.3745 in Second AC and Rs.2715 in Third AC for this train which includes meal charges also.

Sampark Kranti is a series of express trains in India that connects different states of India to the national capital - New Delhi. Sampark in Hindi means connectivity while Kranti is also a word in Hindi language meaning revolution. Thus these trains have revolutionized the state connectivity with center. These trains have a combination of all the classes - AC, Sleeper and Unreserved coaches. Sampark Kranti trains are for long distance journeys. These trains are named after states and Sampark Kranti train for a particular state has most of the stoppages in that state only. 2 sampark-kranti trains run from Delhi to Guwahati - PORVOTR S KRNTI (22450) and NDLS SCL EXP (14038).

Delhi to Guwahati PORVOTR S KRNTI (22450) departs from New Delhi station (NDLS) at 23:45 and arrives Guwahati station (GHY) at 08:00. Delhi to Guwahati sampark-kranti fare is Rs.4915 in First AC, Rs.2885 in Second AC, Rs.2000 in Third AC and Rs.765 in Sleeper for this train.

Delhi to Guwahati NDLS SCL EXP (14038) departs from New Delhi station (NDLS) at 23:45 and arrives Guwahati station (GHY) at 07:40. Delhi to Guwahati sampark-kranti fare is Rs.4835 in First AC, Rs.2835 in Second AC, Rs.1950 in Third AC and Rs.735 in Sleeper for this train.