Hi There are frequent TNSTC bus services between Pondicherry - Chennai , train also available shared cab services are also available which will take around 4hr journey. So you can take any mode of transport. Its a busy route and there is no problem in finding transport from one another. Thank you See You on the Road...👌👌
Hey, there are plenty of buses. Pondicherry is only 3.5 Hrs away from Chennai. There are TNSTC Ultra Deluxe buses which costs only ₹175 and also private operators that costs ₹400-500. I suggest you download the Redbus App and book the bus as per your schedule and convenience.