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. 1 rajdhani train runs from New Bongaigaon to Allahabad - RAJDHANI EXP (12423).

New Bongaigaon to Allahabad RAJDHANI EXP (12423) departs from New Bongaigaon station (NBQ) at 09:25 and arrives Prayagraj Allahabad Junction station (PRYJ) at 02:53. This train has 12 stoppages. New Bongaigaon to Allahabad rajdhani fare is Rs.3820 in First AC, Rs.2250 in Second AC and Rs.1595 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 New Bongaigaon to Allahabad - PORVOTR S KRNTI (14037) and PORVOTR S KRNTI (22449).

New Bongaigaon to Allahabad PORVOTR S KRNTI (14037) departs from New Bongaigaon station (NBQ) at 09:15 and arrives Prayagraj Allahabad Junction station (PRYJ) at 04:00. This train has 6 stoppages. New Bongaigaon to Allahabad sampark-kranti fare is Rs.3285 in First AC, Rs.1945 in Second AC, Rs.1355 in Third AC and Rs.505 in Sleeper for this train.

New Bongaigaon to Allahabad PORVOTR S KRNTI (22449) departs from New Bongaigaon station (NBQ) at 09:15 and arrives Prayagraj Allahabad Junction station (PRYJ) at 04:00. This train has 7 stoppages. New Bongaigaon to Allahabad sampark-kranti fare is Rs.3365 in First AC, Rs.1990 in Second AC, Rs.1400 in Third AC and Rs.535 in Sleeper for this train.