Use the quicklinks below to jump to the desired section regarding transport in and around Phong Nha.
The Phong Nha bus station is across the street from the boat landing.
There are three daily departures to Dong Hoi at 08:00, 10:00, and 16:00 with the trip costing 100,000 VND and taking about an hour. You pay on the bus.
For all other destinations you'll have to head into Dong Hoi, though if you're headed north, you may save some backtracking by walking out to the main road and flagging down a bus.