Air
The best way to enter Bhutan is by Druk Air, the national air carrier. Following stations are connected with Druk Air flight
India Delhi & Calcutta
Nepal Kathmandu
Bangladesh Dacca
Myanmar Yangoon ( Rangoon)
Thailand Bangkok

By Surface
Entry or exit is also possible through Phuntsoling, the southern Bhutanese border town. From here the nearest airport is Bagdogra in West Bengal (India). For travelers wishing to visit Indian states of Sikkim, West Bengal along with Bhutan, Phuntsoling serves as the convenient point. Exit from Bhutan can be also made through Samdrup Jongkhar, an important link for visiting further Northeastern states of India. However,Government rule of Bhutan has made it mandatory to use at least one way by air.