There are only two entry points to Bhutan. While most travelers arrive by air at Paro, some arrive by road at Phuntsholing, which lies on the southern border with India. In either case, tourists have to fly in as well as out by the national carrier, Druk Air. Druk Air has no interline agreements with other carriers. Hence, tourists need to arrange for their own tickets to and from wherever they connect with Druk Air, as that is the only airline that flies into Bhutan. The flight from Kathmandu to Paro provides the most spectacular view of Himalayan vistas of any scheduled flight. Druk Air does not issue tickets until they have received the visa clearance. Paro airport is less than two hours from Thimphu. The best way to journey by road is to start at Kathmandu.