The expedition
Son Doong with Oxalis, six days and five nights, from January to August.
Son Doong is its own expedition, six days and five nights with Oxalis from January to August. The published prices are 3,000 USD a person and 80,000,000 VND. Be in Dong Hoi by 15:00 for the briefing. As of 21 Oct 2026 the 2027 and 2028 departures are fully booked.
The evening in the village is after the boards close. The summer boat board ends at 16:30, and the winter boat board ends at 15:45.
Tu Lan is a separate cave system, usually a booked multi-day trip rather than a walk-up ticket. The fee, the number of days, and whether a departure is open: Check on arrival.
