You can enter Bhutan by air or overland via the southern borders with India. Majority of the travelers enter Bhutan by air. Some travelers who are traveling to Sikkim or Darjeeling or North-eastern states of India may enter or exit overland.Bhutan government has made it mandatory to use at least one way air travel though
Druk Air and Bhutan Airlines are the only two airlines connecting Bhutan with outside world.
Paro is the only international airport in Bhutan. The airlines connect Paro with regional cities such as Kathmandu (Nepal), Delhi, Kolkatta, Mumbai, Guwahati and Bagdogra (India), Bangkok (Thailand) and Dhaka (Bagladesh).
We can also enter Bhutan by surface.Bhutan is bordered with India from three sides: East, South and West. While Phutsholing (Southern border) and Sandrupjongkhar (East) are two border towns that serve as ports for tourists to get in and out of Bhutan.
Phuntsholing, the southern Bhutan border town is 169km (106 miles) from Thimpu. The Indian side is called Jaigaon and connected by road with Siligurhi of West Bengal. Siligurhi has NJP train station and Bagdogra airport. NJP train station has connections with major Indian cities. Bagdogra airport connects Delhi, Kolkatta and Guwahati. From Siligurhi, Nepal border is one hour drive and another half an hour brings you to Bhadrapur airport from where you can fly to Kathmandu (1 hr).
If you are visiting Sikkim and Darjeeling before or after Bhutan, you will use Phuntsoling as the port of entry or exit. From Phuntsoling, Siligurhi is mere 6 hours drive and further one hour drive will bring you to Nepal border. Bhutan Transport operates regular bus service between Phuntsoling and Siligurhi. On request of our clients, we can arrange a private jeep transportation to Siligurhi (5 hrs), Kalimpong (6 hrs), Gangtok (8 hrs), Darjeeling (8 hrs) and Bhadrapur (9 hrs).
Samdrup Jongar served as the port in eastern Bhutan but following a Ulfa and Bodo Separatist acitivities, it has been temporarily closed.