The average bus between Udon Thani and Rayong takes 13h 13m and the fastest bus takes 11h 50m. The bus service runs several times per day from Udon Thani to Rayong. 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 every 4 hours between Udon Thani and Rayong. The earliest departure is at 8:30 AM in the morning, and the last departure from Udon Thani is at 10:30 PM which arrives into Rayong at 10:35 AM. All services require a transfer at Bangkok Nakhonchai Air Terminal and take an average of 13h 13m. The schedules shown below are for the next available departures.


12h 30m • 2 changes


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11h 50m • 2 changes
Want to know about travelling from Udon Thani to Rayong? 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 Udon Thani to Rayong. However, there are services departing from Udon Thani station and arriving at Rayong station via Bangkok Nakhonchai Air Terminal. The journey, including transfers, takes approximately 13h 13m.
Udon Thani to Rayong bus services, operated by Nakhonchai Air, depart from Udonthani station.
Udon Thani to Rayong bus services, operated by Nakhonchai Air, arrive at Rayong Tour Office Sai 4 station.
Book your Udon Thani to Rayong bus tickets online with Nakhonchai Air, Thai Smile Bus and 2 other operators.
The distance between Udon Thani and Rayong is 551.4 km. The road distance is 739 km.
You can take a bus from Udonthani to Rayong Tour Office Sai 4 via Bangkok Nakhonchai Air Terminal, นครชัยแอร์;Nakhonchai Air, หน้าท่ารถตู้ต่างจังหวัด หมอชิต 2;Front Mochit 2 Intercty Van Terminal, and Mochit Terminal Platform 3 in around 12h 10m.