THE SHORT VERSION
Vientiane to Siem Reap at a glance.
- From
- Vientiane ວຽງຈັນ
- To
- Siem Reap សៀមរាប
- Road distance
- About 695 km
- Straight line
- 529 km
- Car time, no stops
- ~9 h 30 min buses take longer
- Return route
- Siem Reap to Vientiane →
- Border
- Laos → Cambodia. Passport and visa needed
THE DETAILS THAT MAKE A DIFFERENCE
Right place. Right bus. Better start.
Leaving Vientiane
Vientiane is the capital of Laos and has several bus terminals, each serving a different direction. International buses to Vietnam leave from the Southern Bus Terminal.
- Central Bus Terminal (Talat Sao)
City buses, plus buses to the Thai border and some regional routes. - Southern Bus Terminal
About 10 km from the centre. Routes south and many international buses to Vietnam. - Northern Bus Terminal
About 9 km from the centre. Routes north, such as Luang Prabang.
Arriving in Siem Reap
From the out-of-town station, take a tuk-tuk into the centre. If you arrive from the west, you can sometimes get off in town before the station.
- Siem Reap bus station and company offices
Many buses use an out-of-town station east of the centre; some companies use their own offices.
Keep the essentials offline
Save your ticket, the exact meeting point and the operator's phone number before you set off. Follow the check-in time on your confirmation.
- Journeys to Phnom Penh vary a lot by company. Premium operators make fewer stops.
KEEP GOING
From Siem Reap, the road continues.
Other ways to reach Siem Reap
More buses from Vientiane
USEFUL FOR THIS TRIP
Sort the small things before you go.
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GOOD QUESTIONS
Before you take your seat.
How far is Vientiane from Siem Reap by road?+
About 695 km by road (529 km in a straight line). Distance is an OpenStreetMap routing estimate, not an operator figure.
How long does the bus from Vientiane to Siem Reap take?+
We don't publish timetables. As a guide, the drive takes roughly 9 h 30 min by car without stops; bus journeys are usually longer. Check the duration of your chosen departure on 12Go before booking.
Where does the bus leave from in Vientiane?+
It depends on the operator. Main options in Vientiane include Central Bus Terminal (Talat Sao), Southern Bus Terminal, Northern Bus Terminal, and many tourist companies collect from offices or hotels. Your ticket shows the exact boarding point.
Is there a bus back from Siem Reap to Vientiane?+
Yes, 12Go also lists services in the opposite direction. See our Siem Reap to Vientiane guide.
Where does the bus from Vientiane arrive in Siem Reap?+
It depends on the operator. In Siem Reap, services use Siem Reap bus station and company offices. From the out-of-town station, take a tuk-tuk into the centre. If you arrive from the west, you can sometimes get off in town before the station.
How do I get from the bus stop to the centre of Siem Reap?+
From the out-of-town station, take a tuk-tuk into the centre. If you arrive from the west, you can sometimes get off in town before the station.
What kind of bus runs from Vientiane to Siem Reap?+
It varies by operator and departure. Routes in this region are served by a mix of sleeper buses, seated coaches and smaller limousine vans. Check the vehicle type, seat layout and luggage allowance for your departure on 12Go before you book.
Can I book the Vientiane to Siem Reap bus online?+
Yes. 12Go lists departures on this route. You choose a date, compare operators and pay online, and the provider issues the ticket. BusConnects doesn't sell tickets itself.
Where can I go next from Siem Reap by bus?+
Direct buses from Siem Reap include Poipet, Battambang, Phnom Penh, Trat, Bangkok and more. See all connections on our Siem Reap bus page.
Do I need a visa to take the bus from Vientiane to Siem Reap?+
This journey crosses from Laos into Cambodia. Check the current entry and visa rules for your nationality before you travel, and keep your passport with you on the bus.
FOLLOW THE INFORMATION
Clear sources. Better decisions.
Route listed in 12Go's public route index (checked 2026-10-09). Station information reviewed 2026-10-09. Distance: OpenStreetMap data via OSRM (approximate driving distance). Listings change and are not live inventory. Confirm the departure, pickup, price and conditions before paying.
12Go: Vientiane to Siem Reap bus route listing ↗Wikivoyage: Vientiane (Get in) ↗Wikivoyage: Siem Reap (Get in) ↗How BusConnects uses sources →