The average bus between Ubon Ratchathani and Phnom Penh takes 24h 24m and the fastest bus takes 21h 45m. The bus service runs several times per day from Ubon Ratchathani to Phnom Penh. The journey time may be longer on weekends and holidays; use the search form on this page to search for a specific travel date.
Buses run twice daily between Ubon Ratchathani and Phnom Penh. The earliest departure is at 10:30 AM in the morning, and the last departure from Ubon Ratchathani is at 9:45 PM which arrives into Phnom Penh at 7:30 PM. All services require a transfer at Bangkok Nakhonchai Air Terminal and take an average of 24h 24m. The schedules shown below are for the next available departures.
Arrives next day


27h 30m • 2 changes
Arrives next day


21h 45m • 2 changes
Arrives next day


27h 30m • 2 changes
Arrives next day


21h 45m • 2 changes
Arrives next day


27h 30m • 2 changes
Arrives next day


21h 45m • 2 changes
Arrives next day


27h 30m • 2 changes
Arrives next day


21h 45m • 2 changes
Want to know about travelling from Ubon Ratchathani to Phnom Penh? We have put together a list of the most frequently asked questions from our users such as: What is the cheapest mode of transport? What is the quickest option? How much do tickets usually cost? and many more.
No, there is no direct bus from Ubon Ratchathani to Phnom Penh. However, there are services departing from Ubon Ratchathani station and arriving at Phnom Penh station via Bangkok Nakhonchai Air Terminal. The journey, including transfers, takes approximately 24h 24m.
Ubon Ratchathani to Phnom Penh bus services, operated by Nakhonchai Air, depart from Ubon Ratchathani station.
Ubon Ratchathani to Phnom Penh bus services, operated by Nakhonchai Air, arrive at Phnom Penh station.
The distance between Ubon Ratchathani and Phnom Penh is 408.8 km. The road distance is 1,234 km.
You can take a bus from Ubon Ratchathani to Phnom Penh via Bangkok Nakhonchai Air Terminal, นครชัยแอร์;Nakhonchai Air, หน้าท่ารถตู้ต่างจังหวัด หมอชิต 2;Front Mochit 2 Intercty Van Terminal, and Bangkok Mochit Bus Terminal in around 21h 42m.