The bus between Indra Square Pratunam and Terminal 21 takes 15 min. The bus runs at least 3 times per hour from Indra Square Pratunam to Terminal 21. 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 Indra Square Pratunam and Terminal 21. The earliest departure is at 5:23 AM in the morning, and the last departure from Indra Square Pratunam is at 11:32 PM which arrives into Terminal 21 at 11:56 PM. All services require a transfer at Big C Rajdamri and take an average of 15 min. The schedules shown below are for the next available departures.

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15 min • 1 changeWant to know about travelling from Indra Square Pratunam to Terminal 21? 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 Indra Square Pratunam to Terminal 21. However, there are services departing from Big C Rajdamri station and arriving at Robinsonsukhumvit station via Robinsonsukhumvit station. The journey, including transfers, takes approximately 15 min.
Indra Square Pratunam to Terminal 21 bus services, operated by Thai Smile Bus, depart from Big C Rajdamri station.
Indra Square Pratunam to Terminal 21 bus services, operated by Thai Smile Bus, arrive at Robinsonsukhumvit station.
Book your Indra Square Pratunam to Terminal 21 bus tickets online with 12go.asia.
The distance between Indra Square Pratunam and Terminal 21 is 2.7 km.
Thai Smile Bus operates a bus from Big C Rajdamri to Robinsonsukhumvit every 10 minutes. Tickets cost ฿17–23 and the journey takes 10 min. Bangkok Mass Transit Authority also services this route every 15 minutes.