The average bus between Chiang Rai and Sai Mai takes 14h 57m and the fastest bus takes 12h 30m. The bus service runs several times per day from Chiang Rai to Sai Mai. 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 4 times a day between Chiang Rai and Sai Mai. The earliest departure is at 8:30 AM in the morning, and the last departure from Chiang Rai is at 7:20 PM which arrives into Sai Mai at 7:50 AM. All services require a transfer at Bangkok Nakhonchai Air Terminal and take an average of 14h 57m. The schedules shown below are for the next available departures.
Arrives next day


22h 5m • 2 changes
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12h 55m • 2 changes
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12h 35m • 2 changes
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12h 35m • 2 changes
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22h 5m • 2 changes
Arrives next day


12h 55m • 2 changes
Arrives next day


12h 35m • 2 changes
Arrives next day


12h 35m • 2 changes
Arrives next day


22h 5m • 2 changes
Arrives next day


12h 55m • 2 changes
Arrives next day


12h 35m • 2 changes
Arrives next day


12h 35m • 2 changes
Want to know about travelling from Chiang Rai to Sai Mai? 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 Chiang Rai to Sai Mai. However, there are services departing from Chiang Rai station and arriving at Sai Mai station via Bangkok Nakhonchai Air Terminal. The journey, including transfers, takes approximately 14h 57m.
Chiang Rai to Sai Mai bus services, operated by Sombat Tour, depart from Chiang Rai station.
Chiang Rai to Sai Mai bus services, operated by Sombat Tour, arrive at Bangkok Nakhonchai Air Terminal station.
The distance between Chiang Rai and Sai Mai is 673 km. The road distance is 778 km.
Nakhonchai Air operates a bus from Chiang Rai to Bangkok Nakhonchai Air Terminal twice daily. Tickets cost ฿950–1,200 and the journey takes 10h 10m.