By Air (Most Convenient) : Fly directly to Paro International Airport, the only major international airport in Bhutan.
Direct flights operate from Delhi, Kolkata, Bagdogra, Guwahati, and sometimes Mumbai, as well as Kathmandu, Bangkok and Singapore.
Airlines: Druk Air and Bhutan Airlines.
By Road (Via India) : You can enter Bhutan from India through two main borders: Jaigaon (West Bengal) → Phuentsholing (Bhutan) Most popular and easiest land entry point.
Reach Jaigaon by road/train from Siliguri, Bagdogra, Hasimara or New Jalpaiguri.
After immigration at Phuentsholing, continue by road to Thimphu or Paro.
Gelephu or Samdrup Jongkhar – Less commonly used.
Entry allowed depending on your itinerary and permits.