Island · Laos · Southeast Asia
Hammocks and Mekong sunsets in the 4000 Islands of southern Laos
Photo: Paul Read / Pexels
Don Det is a small island in Si Phan Don, the 4000 Islands group on the Mekong in southern Laos. Hostels and bungalows cluster on the north-east and sunset sides, with Don Khon next door.
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Best for: Backpacker bars and the main strip
The north-east of the island is where many hostels, restaurants and bars sit along the riverbank. It is the busiest part of Don Det, with boat arrivals, shops and tour desks close together. Evenings are social but low-key. Expect to walk everywhere along a single path.
Best for: Sunset views and a quieter feel
Across the island, the sunset side has bungalows and small hostels facing west over the Mekong. It is typically quieter than the sunrise side, with fewer bars. A short walk or bicycle ride connects the two coasts. It suits travellers who prefer calm evenings and river views.
Best for: Waterfalls, cycling and a calmer base
A bridge links Don Det with Don Khon, where a few guesthouses and cafés are spread out near the Li Phi waterfall and the old French-era railway. Don Khon is quieter and less developed than Don Det. It is easy to reach by bicycle and suits travellers who want peace or a base for day trips.
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Si Phan Don, or the 4000 Islands, is a group of small islands scattered across the Mekong in the far south of Laos, close to the Cambodian border. Laos's tourism authority describes Don Det and Don Khong as the most visited islands, with the rest mostly uninhabited. Don Det is described as the more laid-back of the two, with some bars and restaurants.
Days here are about slowing down. Bicycles are the usual way to get around, with paths linking Don Det to its neighbour Don Khon, where the Li Phi waterfall is nearby. The Khone Phapheng Falls, described as the largest waterfall by water volume in Southeast Asia, lie about 6 km south of Don Det and about 13 km from the Cambodian border. Endangered Irrawaddy dolphins inhabit the Mekong near the border and can be seen from locally chartered boats.
Accommodation is typically simple, from bungalows to small dorms, many with hammocks and river views. Facilities can be limited compared with the mainland, so bring cash and plan for patchy connectivity. Don Det is a natural stop on the way between Pakse and the Cambodian border towards Kratie and Phnom Penh, or the other way round.
The usual route is by road from Pakse, which has an airport (PKZ), to the Nakasong boat landing on the Mekong bank. This is roughly 150 km along Route 13 south, according to Laos's tourism authority, and typically takes around two and a half to four hours by bus or minibus. From Nakasong, small boats cross to Don Det in a short journey. Travellers coming from Cambodia typically cross the border and continue by road to Nakasong. Check the FCDO's advice on river and road travel and make sure boats carry life jackets.
The rainy season runs from May to October, when the Mekong rises and flash floods and landslides are possible elsewhere in Laos, according to the FCDO. The months from around November to February are typically drier and cooler, followed by hot weather in March and April. Water levels affect the waterfalls and boat trips, so ask locally before planning excursions. Khone Phapheng is most impressive when the river is high.
Si Phan Don means 4000 Islands, a group of small islands scattered across the Mekong in the far south of Laos near the Cambodian border. Don Det is one of the most visited islands, described by Laos's tourism authority as the more laid-back of the two main visited islands. It has some bars and restaurants and is reached by boat from the Nakasong landing on the mainland.
Most travellers take a bus or minibus from Pakse to the Nakasong boat landing, about 150 km south along Route 13 according to Laos's tourism authority, which typically takes a few hours. From there a short boat ride crosses to Don Det. Hostels and tour desks in Pakse can usually arrange the combined ticket. Check the FCDO's advice on road and river travel.
Laos's tourism authority says endangered Irrawaddy dolphins inhabit the Mekong near the Lao-Cambodian border and can be seen from locally chartered boats. Sightings are not guaranteed, and numbers are small. Check that your boat has life jackets, follow the guidance of your boatman and ask your hostel about responsible operators.
Most visitors relax in hammocks, cycle between Don Det and Don Khon, visit the Li Phi waterfall and take boat trips on the Mekong. Khone Phapheng Falls, described as the largest waterfall by volume in Southeast Asia, lie about 6 km south of Don Det. Evenings are low-key, with riverside restaurants and a few bars.
The rainy season runs from May to October, when the Mekong rises and heavy rain is common, according to the FCDO. The months from around November to February are typically drier and cooler, with hot weather in March and April. River levels affect the waterfalls and boat trips, so check conditions locally before booking excursions.
Don Det (Si Phan Don) is a stop on The Laos slow route: Chiang Rai to Don Det.
Reviewed by the HostelConnect editorial team on 8 November 2026. Check entry rules, transport and conditions with official sources before you travel.
