The Mekong doesn't cross Thailand, it runs along it: in the north, from the Golden Triangle to Chiang Khong, then all along Isaan, facing Laos. 7 riverside stops, far from the usual tours.
Photo by Shutterstock
The river forms the border with Laos on two stretches. Between Chiang Khong and Chiang Khan, it heads into the Lao mountains: the road, or the slow boat on the Lao side, links the two.
An old town on the riverbank, a few kilometers from the Sop Ruak viewpoint where Thailand, Laos and Myanmar meet.
Our guide to Chiang Saen and the Golden Triangle →Next : Chartered boat · about 1.5 hrs
Across from Huay Xai, in Laos. You cross the 4th Friendship Bridge here to catch the slow boat to Luang Prabang.
Our guide to Chiang Khong →Next : Road · 9 hrs by car, 14 by bus or The slow boat to Luang Prabang
Where the river becomes the border again, in Loei province. A street of wooden houses along the bank, very popular with Thai visitors.
Next : Road · 3 hrs by car
Across from Vientiane, linked by the 1st Friendship Bridge. The town of the naga fireballs, at the end of Buddhist Lent.
Our guide to Nong Khai →Next : Road · about 4 hours
A long riverside promenade facing the limestone hills of Khammouane, in Laos. 3rd Friendship Bridge to Thakhek.
Our guide to Nakhon Phanom →Next : Minibus · about 1.5 hrs
Across from Savannakhet, via the 2nd Friendship Bridge. A large Indochina market on the riverbank.
Next : Minibus via Ubon Ratchathani
Where the Mun meets the Mekong, two waters of different colors side by side. Just downstream, the river enters Laos.
Six must-sees in the north and Isan away from the Mekong, each from the nearest stop. Letters refer to the stops map.
Photo by JJ Harrison on Wikimedia Commons · CC BY-SA 3.0
Wat Rong Khun, a contemporary art temple by Chalermchai Kositpipat, in white plaster set with mirror chips and still being built; entry 200 baht. The Blue Temple, Wat Rong Suea Ten, is 4 km from the bus station.
From Chiang Saen · local bus, 2 to 2.5 hrs
Photo by PONGSATHORNCH09041980 on Wikimedia Commons · CC BY-SA 4.0
A rocky ridge above 1,200 m on the Lao border, known for its sea of mist at sunrise, mostly December to February. No public transport to the top: people sleep in Ban Rom Fa Thai village.
From Chiang Khong · car or motorbike, 73 km
Photo by Amnart Khampon on Wikimedia Commons · CC BY-SA 4.0
A World Heritage site since 2024: the largest collection of sacred sīma stones from the Dvaravati period, around the 8th century, among mushroom-shaped sandstone rocks and shelters with prehistoric paintings. Little public transport: plan on a car.
From Nong Khai · car, 65 km
Photo by Kiwiodysee on Wikimedia Commons · CC BY-SA 3.0
Southeast Asia's most important prehistoric settlement according to UNESCO, listed in 1992: red-painted pottery, early bronzes and more than a hundred burials. A national museum, and an excavation pit left in place at Wat Pho Si Nai; entry 150 baht.
From Nong Khai · bus to Udon Thani, 1 hr, then 50 km
Photo by Nicetory on Wikimedia Commons · CC BY-SA 4.0
A 60 km² sandstone plateau at nearly 1,300 m, a national park since 1962. You hike up, 5.5 km of trail, and sleep on top. Open October 1 to May 31; the climb must start between 6 am and noon.
From Chiang Khan · via Loei, 3 to 3.5 hrs
Photo by PhiPhiUbon on Wikimedia Commons
The capital of southern Isan, on the Mun River. Its Candle Festival parades huge carved wax candles at the start of Buddhist Lent, in July; a 22 m candle monument stands year-round in Thung Si Mueang park.
From Khong Chiam · 80 km by roadNovember to February: dry and cool, the best time. March and April: intense heat. May to October: the monsoon and a high river, with the end of Buddhist Lent in October.
| J (current month) | F (current month) | M (current month) | A (current month) | M (current month) | J (current month) | J (current month) | A (current month) | S (current month) | O (current month) | N (current month) | D (current month) | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Our takenorth and Isaan | Ideal | Ideal | Fair | Fair | Fair | Difficult | Difficult | Difficult | Difficult | Good | Ideal | Ideal |
| The Mekongat Nong Khai | Low | Low | Low | Low | Low | Rising | Rising | High | High | High | Falling | Low |
| Festivalsmain ones | Songkran | Ok Phansa, naga fireballs | Loy Krathong |
| Month | Our take | River | Festivals |
|---|---|---|---|
| Jan (current month) | Ideal | Low | |
| Feb (current month) | Ideal | Low | |
| Mar (current month) | Fair | Low | |
| Apr (current month) | Fair | Low | Songkran |
| May (current month) | Fair | Low | |
| Jun (current month) | Difficult | Rising | |
| Jul (current month) | Difficult | Rising | |
| Aug (current month) | Difficult | High | |
| Sep (current month) | Difficult | High | |
| Oct (current month) | Good | High | Ok Phansa, naga fireballs |
| Nov (current month) | Ideal | Falling | Loy Krathong |
| Dec (current month) | Ideal | Low |
Festival dates follow the lunar calendar and change every year. Mekong level: Mekong River Commission, median of 2020-2025.
When to go to the Mekong, month by month →2 days · from Chiang Khong
US travelers can stay 30 days visa-free for tourism (60 days before September 15, 2026), extendable once by 30 days in Thailand. The free TDAC digital arrival card is required: fill it in within 3 days before arrival.
Royal Thai Embassy in Washington, page updated September 17, 2026, checked October 8, 2026. Visa-free entries by land: two per calendar year (TTG Asia, September 2026).
Five Friendship Bridges link the two banks, from Chiang Khong to Mukdahan; the latest, in Bueng Kan, opened in late 2025. Hours vary by checkpoint: at the 4th bridge, it's open 8 a.m. to 8 p.m. The Lao e-Visa is only accepted at Bridges I, II and IV: at Bridge III, you need a visa on arrival. Ferries also cross the river at other points.
Visas at the 5th bridge, Bueng Kan – Paksan: not confirmed yet.
The Friendship Bridges over the Mekong →Buses between Isaan towns and domestic flights from Bangkok Don Mueang to Chiang Rai, Loei, Udon Thani, Nakhon Phanom and Ubon Ratchathani, notably on Thai AirAsia.
Air routes: airport websites and Wikipedia, October 2026
1,750 baht a day traveling simply, 3,100 in comfort, excluding flights.
Nomadic Matt, September 2026
Budget for Thailand →