The bus between GMM Grammy and Siam Square takes 24 min. The bus runs at least 3 times per hour from GMM Grammy 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 GMM Grammy and Siam Square. The earliest departure is at 6:18 AM in the morning, and the last departure from GMM Grammy is at 11:03 PM which arrives into Siam Square at 11:37 PM. All services require a transfer at Indra Square Pratunam and take an average of 24 min. The schedules shown below are for the next available departures.

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24 min • 1 changeWant to know about travelling from GMM Grammy 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 GMM Grammy to Siam Square. However, there are services departing from Midtown Asoke station and arriving at Siam Square station via Indra Square Pratunam station. The journey, including transfers, takes approximately 24 min.
GMM Grammy to Siam Square bus services, operated by Thai Smile Bus, depart from Midtown Asoke station.
GMM Grammy to Siam Square bus services, operated by Bangkok Mass Transit Authority, arrive at Siam Square station.
Book your GMM Grammy to Siam Square bus tickets online with 12go.asia.
The distance between GMM Grammy and Siam Square is 3.1 km.
You can take a bus from Midtown Asoke to Siam Square via Indra Square Pratunam and Siam Square in around 22 min.