$3,120 (79.500.000 ₫)Son Doong
Hang Sơn Đoòng
The biggest cave on earth, with its own jungle, river and weather inside. The bucket-list trip everyone has seen on 60 Minutes.

Phong Nha-Kẻ Bàng National Park · Central Vietnam
Your honest guide to the Phong Nha caves and the best Phong Nha tours, from an $11 self-guided walk to a $3,000 Son Doong expedition. Real prices, every route into Phong Nha-Kẻ Bàng National Park, and a plan you can actually book.
Every fee in dollars and dong, checked and dated. No vague 'affordable'.
From Son Doong to the boat cave, and how to get here from any city.
What's worth it, what to skip, and the crowds and scams nobody warns you about.
Written from the ground, not rewritten from other blogs.
Start here
From a gentle boardwalk to the world's biggest cavern, these are the Phong Nha caves worth knowing, with what the Phong Nha cave tours cost and whether each one is worth it.
$3,120 (79.500.000 ₫)Hang Sơn Đoòng
The biggest cave on earth, with its own jungle, river and weather inside. The bucket-list trip everyone has seen on 60 Minutes.
$310 (7.900.000 ₫)Hang Pygmy
Camp deep inside one of the planet's biggest caves, with abseiling and an underground river. The smart Son Doong alternative you can actually book.
$11 (270.000 ₫)Động Thiên Đường
The prettiest cave you can see without a guide or a big budget. A lit boardwalk leads into enormous, jaw-dropping chambers.
$345 (8.800.000 ₫)Hang Én
Sleep on a beach inside a vast cave and wake to thousands of swifts pouring out at sunrise. The single most-loved moment in Phong Nha.
$6 (150.000 ₫)Động Phong Nha
The original river cave that named the park. You glide in by dragon boat along an underground river, past lit formations.
$18 (450.000 ₫)Hang Tối
A full afternoon of fun: a 400m zipline over the river, a natural mud bath, kayaking and headlamp caving.
Not sure which one?
Most people bounce between four blog posts trying to choose. Our cave finder asks five quick questions and points you to the right Phong Nha cave tour, with the price and how to book.
Getting here
Quick truth first: Dong Hoi is the gateway city with the airport and train station, and Phong Nha town (Son Trach) is about 45km further on. Here's the run from each major city.
A tourist bus or a private car. Both take about 4 to 4.5 hours.
See all options →Sleeper bus (7 to 8 hours) or the train to Dong Hoi plus a short transfer.
See all options →Fly to Dong Hoi (about 1h15) for speed, or take the overnight train to sleep through it.
See all options →An overnight sleeper bus, or the train to Dong Hoi.
See all options →The local bus B4 if you're counting pennies, or a quick private transfer.
See all options →Sleeper bus from Hoi An direct, or a private car via Hai Van Pass.
See all options →Fly to Dong Hoi (about 1h45), then 45km transfer. Don't try the bus.
See all options →Sleeper bus or train. Allow most of the day.
See all options →Why trust us
The big sites either have no prices or can't be honest about operators. We give you the real numbers, the honest verdict, and a quick way to enquire when you're ready. Then we point you to the right people to book with.
Tell us your dates, your group and what you're into. We'll send back a real plan for your Phong Nha tour, with caves, transport and where to stay, and connect you to the right operator.