The average bus between Thon Buri and Siam Square takes 31 min and the fastest bus takes 26 min. The bus runs at least 3 times per hour from Thon Buri to Siam Square. 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 20 minutes between Thon Buri and Siam Square. The earliest departure is at 5:16 AM in the morning, and the last departure from Thon Buri is at 5:34 PM which arrives into Siam Square at 6:07 PM. All services require a transfer at แยกเอสเอบี;S. A. B. Intersection and take an average of 31 min. The schedules shown below are for the next available departures.

35 min • 1 change

35 min • 1 change

35 min • 1 change

35 min • 1 change
Want to know about travelling from Thon Buri to Siam Square? 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 Thon Buri to Siam Square. However, there are services departing from Thon Buri station and arriving at Siam Square station via แยกเอสเอบี;S. A. B. Intersection. The journey, including transfers, takes approximately 31 min.
Thon Buri to Siam Square bus services, operated by Thai Smile Bus, depart from หลังแยกบางยี่เรือ;After Bang Yi Ruea Junction station.
Thon Buri to Siam Square bus services, operated by Thai Smile Bus, arrive at สยามเซ็นเตอร์;Siam Center station.
Book your Thon Buri to Siam Square bus tickets online with Thai Smile Bus and Bangkok Mass Transit Authority.
The distance between Thon Buri and Siam Square is 5.2 km. The road distance is 7 km.
You can take a bus from หลังแยกบางยี่เรือ;After Bang Yi Ruea Junction to Siam Square via แยกเอสเอบี;S. A. B. Intersection and สยามเซ็นเตอร์;Siam Center in around 27 min.