You can reach to the Ho Chi Minh Airport through numerous connecting flights via Bangkok and Hong Kong. Some of the flights which operate on this route include Air India, Bangkok Airways etc. From this aiport you can either take a cab or can take a flight to the Phu Bai Airport.
Visa is required by the citizens of India to enter the country of Vietnam. You can either apply for Visa at New Delhi or can apply for the same online. You can also apply for Visa on arrival. Cost of a single entry visa is approximately Rs. 1500/- while for multiple entry it is Rs. 3000/-
This area is known to have Phu Bai airport within it which has flights entering from the city of Hanoi. Reaching the aiport you can take a cab to the centre of the city.
You can always take a train or bus from the city of Hanoi, however cabs are also available which offer you a greater advantage of sight seeing while on your way. Travelling by cab you can see the Marble mountains as well as the Cham Museum.
You can get inter city trains from Hanoi, Danang to the city of Hue which includes all the basic amenities and services.
You would find numerous methods of travelling around in this city. You can either opt for going by taxi or you can rent a motorbike in case you want to have something personal to travel on. In case you want to be in and around the town then bicycles are also available on rent to try on. However if you want you can travel this area on foot as this area is compact and quite easy to navigate into.