Traveling from the U.S. to Bhutan is easy. All you need to do is to travel from the U.S. to Bangkok or Singapore in Thailand, and then after you get the Bhutan visa for Us citizens, transfer to Bhutan for a Royal Bhutan airline flight. One option is that since Bhutan is close to Nepal and India, you can also fly to Bhutan from Kathmandu, Nepal or New Delhi or Kolkata, India