Bhutan is connected to the Indian state of Delhi, Kolkota, Bodh Gaya, Bagdogra, and Guwahati in Assam, Kathmandu, Dhaka, Bangkok and Singapore by the national airline, Druk Air. With effect from post 2013 a private Bhutan Airlines has joined the Bhutan Airline industry connecting Indian state of Kolkota and Bangkok.
Both the airlines offer a competitive price and unparalleled services. Choice is yours and in terms of airfare Bhutan Airlines is bit cheaper.
Both the Airlines accept online ticket purchase and if you wish to buy ticket directly from their websites, kindly click the following web link:
Follow the link to access Bhtuan Airline Website