For the treks in Sikkim and Darjeeling , one has to reach the city of Siliguri (considered the corridor to the North-East) in West Bengal.

 The nearest railway Station is New Jalpaiguri (NJP), 5 Km from Siliguri and the Airport Bagdogra is 10 KM

You can fly or by train reach Siliguri from Kolkata ( good for the trekkers coming from South/central or Western India) or Delhi as per your convenience from any part within India.

Direct flights are available from New Delhi and Kolkata. All the flights to Bagdogra reaches late in the morning or early afternoon. It becomes difficult to reach the trek base like Yuksom/Hilley/Uttarey on the same day unless a car is booked (takes around 8 hours to reach). One can stay the night in Siliguri and start the travel to the trek base next morning. It is better to reach Siliguri by flight/train to Kolkata and then take an overnight train to NJP unless you are coming from northern India. 

 From Kolkata to Siliguri:

 1.)  By Train:

There are several overnight trains running between Kolkata (Howrah or Sealdah) to NJP. Day trains are also available.

From airport (Dumdum, CCU) , Sealdah railway station is 15 Km and may take 1 to 2 hours depending upon the time you travel. Howrah is 17 Km and may take up to 2 hours during the heavy traffic in the rush hours. Howrah and Sealdah are only 5 Km apart, though it may take an hour to travel. Pre Paid taxi booths are available.

DARJEELING MAIL – Train No. – 12343 (Very good option to reach NJP in the morning. Starts around 10 pm in the night and reaches NJP 8 am in the morning.)
PADATIK EXPRESS – Train No. – 12377 (Very good option to reach NJP in the morning. Starts around 10 pm in the night and reaches NJP 9 am in the morning.)
KANCHANKANYA EXPRESS – Train No. – 13149 (Starts at 8:30 pm in the evening and reaches NJP 7:30 am in the morning)
SHATABDI EXPRESS – Train No. – 12041 (Day train, starts 2:15 pm in the afternoon and reaches NP at 10:20 pm in the night. There are hotels/lodges outside the railway station at a walking distance of 5 minutes. Otherwise book an auto rickshaw/taxi to Siliguri, which takes around 15 minutes. There are several hotels around Siliguri Junction/Tenzing Norgay Bus Terminus/S.N.T (Sikkim Nationalised Transport stand).

There are other trains also of which some run daily and some on particular days of week.

Avoid booking wait listed (WL) tickets in AC classes (1A/2A/3A) or Chair Car (CC). Book Sleeper class (SL)/Second Sitting class (2S) tickets which have normally more seats/berths and hence much better chance to get confirmed.

 2.)   By Flight:

From Kolkata(CCU)  take a flight to Bagdogra (IXB). From airport book a taxi to reach Siliguri which is 10 Km away.

 From Delhi to Silguri:

 1.)  By Train:

Following trains are good to reach NJP and run daily.

DIBRUGARH RAJDHANI – Train No. 12424 (arrives NJP late in the morning @ 10:45 am)
NORTH EAST EXP – Train No. 12506 (arrives NJP @ 8:20 am in the morning)
BRAHMAPUTRA MAIL – Train No. 12424 (arrives NJP at 5 am in the morning. But this train runs late frequently.

Always avoid booking waitlisted (WL) tickets in AC classes (1A/2A/3A) or Chair Car (CC). Book Sleeper class (SL)/Second Sitting class (2S) tickets which have normally more seats/berth and hence much better chance to get confirmed.

 2.)  By Flight:

From Delhi (DEL) take a flight to Bagdogra (IXB). From airport book a taxi to reach Siliguri which is 10 Km away.

For night stay in NJP/SIliguri:

Trekkers reaching on the previous day before the journey to the actual trek base need to stay the night in Siliguri/NJP. There are several options in Siliguri for spending a night while staying in Standard or Budget accommodation. It is better to reach to the centre of SIliguri called Siliguri Junction (adjacent to Tenzing Norgay Bus Terminus and Sikkim nationalised Transport/S.N.T stand). It takes 30 minutes from Bagdogra or 15 minutes from NJP. There are hotels 5 minutes walking from NJP also.

 Return from NJP/Bagdogra:

Normally you reach NJP/Bagdogra from any trek base  by 5/6 pm in the evening. You can take any train after 7 pm to Kolkata safely, which reach early in the morning. Accordingly arrange your homeward journey from Kolkata onwards.