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 Delhi to Chennai - NZM MAS RAJDHANI (12434).

Delhi to Chennai NZM MAS RAJDHANI (12434) departs from Delhi H Nizamuddin station (NZM) at 15:35 and arrives Chennai Central station (MAS) at 21:00. Delhi to Chennai rajdhani fare is Rs.6505 in First AC, Rs.3970 in Second AC and Rs.2895 in Third AC for this train which includes meal charges also.

Duronto express is a newer premium class of train which runs as fast as Rajdhanis. Duronto word comes from restless in Bengali as these trains had no intermediate commercial stops when they started. But since Indian Railways incurred losses for these trains, some technical stops were converted to commercial stops. On some routes (such as Delhi-Kolkata) they take lesser time than corresponding Rajdhani express. Unlike rajdhani some durontos also have non-air conditioned sleeper class. Thus, Duronto trains have classes First AC (1A), AC II-tier, AC III-tier and Sleeper. Bed-rolls in sleeper class of Mixed Duronto Express trains will be supplied to passengers on demand, on payment of stipulated charges. Duronto trains are distinguished by vibrant and colorful vinyl coating on the outer surface of the coaches. 1 duronto train runs from Delhi to Chennai - MAS DURONTO EXP (12270).

Delhi to Chennai MAS DURONTO EXP (12270) departs from Delhi H Nizamuddin station (NZM) at 15:55 and arrives Chennai Central station (MAS) at 21:00. Delhi to Chennai duronto fare is Rs.6505 in First AC, Rs.3970 in Second AC, Rs.2895 in Third AC and Rs.1225 in Sleeper for this train which includes meal charges also.

The concept of Garib Rath started with the vision to provide air conditioned berths at a comparatively low price for the people who could not afford to travel in AC coaches. Garib-rath phrase translates to poor man's chariot in English. The fare in this train is almost two-thirds of regular third ac fare. Usually Garib Rath have Third AC (3A) class only excepting some 1-2 trains which also have Chair Car (CC) class. The compartments of these train coaches have 9 berths making an extra space for side middle berth which is not there in any other train in India. In case passengers want to have bedrolls they need to pay separately for it. Some garib-raths run as fast as rajdhani, but they have lesser priority for track clearance compared to them. These trains are painted green with a yellow colored strip along the window panes. 1 garib-rath train runs from Delhi to Chennai - MAS GARIB RATH (12612).

Delhi to Chennai MAS GARIB RATH (12612) departs from Delhi H Nizamuddin station (NZM) at 15:35 and arrives Chennai Central station (MAS) at 21:00. Delhi to Chennai garib-rath fare is Rs.1470 in Third AC for this train.

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. 1 sampark-kranti train runs from Delhi to Chennai - SMPARK KRNT EXP (12652).

Delhi to Chennai SMPARK KRNT EXP (12652) departs from Delhi H Nizamuddin station (NZM) at 05:20 and arrives Tambaram station (TBM) at 16:38. Delhi to Chennai sampark-kranti fare is Rs.3115 in Second AC, Rs.2150 in Third AC and Rs.825 in Sleeper for this train.