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. 2 rajdhani trains run from Patna to New Jalpaiguri - DBRT RAJDHANI (12424) and AGTL TEJAS RAJ (20502).

Patna to New Jalpaiguri DBRT RAJDHANI (12424) departs from Patliputra station (PPTA) at 04:15 and arrives New Jalpaiguri station (NJP) at 12:30. This train has 6 stoppages. Patna to New Jalpaiguri rajdhani fare is Rs.2165 in First AC, Rs.1285 in Second AC and Rs.930 in Third AC for this train which includes meal charges also.

Patna to New Jalpaiguri AGTL TEJAS RAJ (20502) departs from Patna Jn station (PNBE) at 08:10 and arrives New Jalpaiguri station (NJP) at 19:35. Patna to New Jalpaiguri rajdhani fare is Rs.2625 in First AC, Rs.1565 in Second AC and Rs.1110 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 Patna to New Jalpaiguri - NDLS SCL EXP (14038) and PORVOTR S KRNTI (22450).

Patna to New Jalpaiguri NDLS SCL EXP (14038) departs from Patliputra station (PPTA) at 14:00 and arrives New Jalpaiguri station (NJP) at 22:55. This train has 3 stoppages. Patna to New Jalpaiguri sampark-kranti fare is Rs.1825 in First AC, Rs.1090 in Second AC, Rs.765 in Third AC and Rs.285 in Sleeper for this train.

Patna to New Jalpaiguri PORVOTR S KRNTI (22450) departs from Patliputra station (PPTA) at 14:00 and arrives New Jalpaiguri station (NJP) at 22:55. This train has 4 stoppages. Patna to New Jalpaiguri sampark-kranti fare is Rs.1905 in First AC, Rs.1140 in Second AC, Rs.815 in Third AC and Rs.315 in Sleeper for this train.