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The Mekong River at sunset in Bokeo Province, Laos, the province Huay Xai sits in

Laos → Thailand · Verified 23 September 2026

Chiang Khong to Huay Xai: the 4th Friendship Bridge, Step by Step

The 4th Thai–Lao Friendship Bridge links Chiang Khong and Huay Xai, open 06:00–22:00. A paid shuttle crosses the bridge itself in about five minutes; walking across is not allowed.

  • Open 06:00–22:00
  • Shuttle, about 20 baht
  • Lao VOA, approx US$40
  • Onward to Chiang Rai, approx 1.5 hrs

How do I actually cross at Chiang Khong and Huay Xai?

The 4th Thai-Lao Friendship Bridge links Chiang Khong and Huay Xai, open 06:00 to 22:00. You cannot walk it: a shuttle bus covers the bridge itself in about five minutes, roughly 20 baht, more outside standard hours. Lao visa on arrival is about US$40, and this is one of the few Laos land borders where the Lao eVisa is also reliably accepted.

The crossing itself

The 4th Thai-Lao Friendship Bridge, from the Lao Department of Immigration register.
CrossingConnectsHoursLao visa on arrival
4th Thai–Lao Friendship Bridge
Also written Huay Xai–Chiang Khong Bridge
Huay Xai, Bokeo → Chiang Khong, Thailand 06:00–22:00 Yes
Huay Xai 4th Friendship Bridge 06:00–22:00 Chiang Khong

Five steps, in order, drawn from traveller reports rather than the official notice board, which does not spell any of this out: clear Thai exit immigration in Chiang Khong; buy a shuttle ticket at the booth just past the counters (cash, small baht notes, no advance booking); ride the shuttle across, about five minutes; clear Lao entry immigration on the Huay Xai side, where visa on arrival is issued; then walk or tuk tuk out to Huay Xai's bus station or slow boat pier, both a short ride rather than a walk from the immigration building. The whole thing, excluding queues, rarely takes more than 30 to 45 minutes.

The Lao visa here, specifically

This bridge is one of the more forgiving Laos entry points on visas. Visa on arrival costs about US$40 for most nationalities, payable in cash, plus a passport photo and a US$1 surcharge outside office hours or at weekends. Pay in baht instead and expect roughly 1,500 to 1,800 baht, since the counter sets its own exchange rate rather than the market one; carry clean, recent-series US notes if you can, since worn or old-series bills are commonly refused here and elsewhere in Laos. The Lao eVisa is also reliably accepted at this crossing according to the official register, one of only a handful of land borders where that is true rather than a source of dispute.

Coming the other way, into Thailand, the visa position depends on your nationality and, since 15 September 2026, on whether you are arriving by land: the 30-day exemption for 60 nationalities now caps land-border entries at twice per calendar year. Full detail, including the Thailand Digital Arrival Card, is on Laos to Thailand crossings, which covers every Friendship Bridge, not just this one.

A Thai-Lao Friendship Bridge over the Mekong at dusk, with a gilded Lao boundary marker in the foreground
A Thai-Lao Friendship Bridge at dusk. Not identified to a specific one of the five bridges.

Onward from Huay Xai: Chiang Rai, about 1.5 hours

Checked live on 23 September 2026: Huay Xai to Chiang Rai runs 15 departures a day, van and bus, as late as 19:30, fastest journey about 1 hour 30 minutes door to door, current operators K Buddy, LaoLuang Travel and Yortdoy Travel. This is the short final hop for anyone who has just taken the two-day Mekong slow boat down from Luang Prabang and is heading on into northern Thailand, and it is worth booking as its own leg rather than assuming the border shuttle covers it: the shuttle only crosses the bridge itself.

Onward from Huay Xai: Luang Prabang, by road or by boat

Two genuinely different journeys share this starting point. The road option, about 8 hours by van or bus door to door on current online listings, is the fast way to arrive. The Mekong slow boat, a public riverboat with a compulsory overnight stop in Pakbeng, takes two full days and is the reason many travellers come to this crossing at all rather than flying past it. Neither is the "right" answer; they are different trips. The full comparison, fares, exact slow boat departure times and what actually goes wrong on the boat, is on the Chiang Mai to Luang Prabang page.

Book Huay Xai to Chiang Rai

What Huay Xai itself is, and is not

Huay Xai is a border town, not a destination most people linger in. The slow boat pier sits roughly a kilometre outside the small centre, and the bus station is a separate short ride again, so budget a tuk tuk between whichever terminal you need and the immigration building rather than assuming you can walk it with luggage. Almost everyone who arrives here is either about to cross into Thailand or has just crossed in and is heading straight on to Chiang Rai, Chiang Mai or Luang Prabang; treat an overnight here as a practical stopover for an early departure, not a stop worth planning a full day around.

Common questions

Can I walk across the bridge?
No. A shuttle bus covers the roughly 5-minute crossing; walking and cycling are banned.
How much is the shuttle, and where do I buy it?
Around 20 baht in standard hours, more outside them. Bought at a booth after Thai immigration, not online.
What time does it close?
06:00 to 22:00, but visa counters often stop earlier, sometimes mid-afternoon.
Does the Lao eVisa work here?
Yes, reliably, one of the few Laos land borders where that holds. Visa on arrival, about US$40, also works.
How do I get onward to Luang Prabang?
By road, about 8 hours, or the 2-day Mekong slow boat via Pakbeng. See the full comparison.

More on this border

For every Laos-Thailand bridge, the 15 September 2026 visa change, and the Vientiane-Bangkok corridor, see Laos to Thailand crossings. For the full official checkpoint list, see all Laos border checkpoints, and for a nationality-by-nationality visa rundown, the Laos visa guide. For every other route we cover, start at all bus routes from Laos.

Laos Bus Tickets

Written and maintained from Vientiane. The people behind this site have lived in Laos for two decades and cross these borders themselves. Routes and visa rules get rechecked whenever something changes, not on a fixed schedule that lets stale information sit for months.

Sources for this page

  1. Lao Department of Immigration: checkpoint list, opening hours and visa status
  2. Tourism Authority of Thailand: the visa exemption change in force since 15 September 2026
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