The Ottanchathiram to Chennai bus route covers approximately 450 kms and takes about 8 hrs 44 mins. A total of 54 direct buses operated by 30 bus operators run on this route. The first bus departs at 00:20, and the last bus leaves at 23:59.
Major boarding points in Ottanchathiram include Palani Road Bypass, while common drop locations in Chennai are Alandur, Ambattur, Anna Nagar, Anna University, Arumbakkam, Ashok Pillar, Avadi, Chemmenchery, Chengalpattu, Chepauk.
RTC and private operators such as APS Travels, Sri Krishna Travels, Suhara Travels (SRK), Chakra Travels, CMB Travels offer Volvo, AC, and non-AC seater and sleeper buses. Ticket prices on redBus range from INR 500 - INR 5999.00 depending on the bus type and features.



