Da Nang is connected with Vietnam and rest of the world by air, land, rail and water.
For India, airlines recommended are AirAsia Berhad, Melando Air and Bangkok Airways. They usually have one or two stops. There are no direct flights.
Cabs can be booked from cities like Hue and Hoi An for around 450,000 VND. They can be booked from any taxi services (Mai Linh and Vinasun are few of the goog service providers) or even hotels can arrange one for you.
Da Nang railway station is located at Hai Phong street, 5 km away from the city centre. It is connected with Hue, Hanoi and Saigon via rail network. It's cheaper than the bus for short distances.
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