By bus it takes at least 23 hours to travel 1,192 km from Siem Reap to Vientiane via Southern Laos rather than crossing in Thailand, which is the shorter route. The first stage of the involves taking a series of minivan journeys to reach Pakse in Laos where passengers join the big bus to Vientiane.
Bus Times from Siem Reap to Vientiane
There is 1 service a day from Siem Reap to Vientiane available book online.
Siem Reap | Vientiane | Cost | Service | Company |
08:00 | 07:00 | $ 96 | Minivan & Bus | Asia Van Transfer |
The journey from Siem Reap to Vientiane has four stages, with passengers changing vehicle each time:
- Stage 1: Journey by minivan to Stung Treng via Preah Vihear.
- Stage 2: Journey by minivan from Stung Treng to the Cambodia/Laos border.
- Stage 3: Journey by minivan from the Cambodia/Laos border to Pakse.
- Stage 4: Journey by VIP Sleeper bus from Pakse to Vientiane.
Buy Tickets from Siem Reap to Vientiane
Use the Search Box below to buy your tickets from Siem Reap to Vientiane.
North Americans and passport holders from most European countries can apply for a visa on arrival at immigration in Laos.
Siem Reap ATV Bus Stop
- The ATV bus stop in Siem Reap is located at Hup Quang Street Central Market 579, Krong Siem Reap, Cambodia.
Vientiane AVT bus stop
- AVT minivan services from Siem Reap terminate at the Southern Bus Terminal in Vientiane.
About Travel to Vientiane
From Vientiane you have the option of onward travel within Laos or alternatively travelling into Thailand. The three most popular destinations to visit in Laos from Vientiane are Vang Vieng, Luang Prabang and the Plain of Jars. The nearest place to visit from Vientiane is Vang Vieng. The journey by bus from Vientiane to Vang Vieng takes 3 to 4 hours. Van Vieng is on route to Luang Prabang, which is the most popular tourist destination in Laos. The journey by bus from Vientiane to Luang Prabang takes 13 hours. Another interest place to visit is the Plain of Jars, an area with thousands of mysterious giant stone jars clustered across a wide plateau which was heavily bombed during the Vietnam War. The journey by bus from Vientiane to Xiangkhouang on the Plain of Jars takes 11 hours.

Travel to Nong Khai in Thailand takes 1 to 2 hours depending on how you travel. The quickest route is to take a bus or minivan from Vientiane to the Thai/Laos Friendship Bridge and cross over by road to Nong Khao. Alternatively you can travel from Vientiane to the small train station in Dongphosy and take train across the border to Nong Khai. Trains to Nong Khai depart from the train station at Dongphosy at 10:00 and 17:30 every day and take 15 minutes to complete the journey to Nong Khai. From Nong Khai Railway Station there are 4 trains a day to Bangkok.