Place, Delhi Train Station and many hotels in the city centre, departing from both airport terminals every 60 minutes from 10AM-11:10PM. The Delhi Transport Corporation (DTC) (schedule: [3]) offers 8 bus routes to both the city center and the more outlying areas of Delhi. Tickets can be bought and a fixed seat can be booked at a desk in the Arrivals Hall. One way fare for both companies: Rs 50 per adult, Rs 25 per child below 12 years, Rs 25 for heavy luggage.
If you'd prefer to go directly to your destination and are willing to sit around in traffic, or are arriving on the many long-distance flights that land in the dead of night, take a taxi. The easiest and safest way is to arrange transport ahead of time through your hotel (some hotels provide this service for free). Alternatively, you can pay for a taxi at the prepaid taxi booths in the international terminal. Prefer the pre-paid booth run by Delhi Police. Depending on the destination, they will ask you to pay the taxi fare to them, which they later pay to the taxi driver after he shows a receipt from you proving that you were taken to your destination. The pre-paid booths are visible as soon as you exit customs. The one on the left is managed by the Delhi police. You may be approached by touts offering pre-paid taxis; just ignore them and ask someone the direction to the Delhi Police prepaid taxi kiosk or booth managed by the cops. To the right of the exit door are private taxi operators. They are more expensive but the cars are air-conditioned. The number of the taxi assigned to you will be on the receipt. Then, go straight through the airport and turn right immediately outside the front doors and someone will help you find your taxi. There are several options, but the booth operated by the "Delhi Police" is considered the best, with non-A/C taxis to most points in the city for Rs 200-300.
Do not give the receipt to the driver until you get to the destination as this is what they are paid on
