One can reach Chennai to Manali via flight or via train. Chennai to Manali is almost an hour and a half long flight. It will cost somewhere between Rs.1800-3000. Once you are in Delhi you can take a bus from Delhi to Manali which will almost take 15 hours to reach Manali. The bus ticket would be somewhere between Rs.750-1800. You can opt for a train from Chennai to Delhi which will take almost 28 hours to reach the capital of India. The train tickets will cost you somewhere Rs.460-2800. Once you reach Delhi you can take a bus from there. The cost of the bus tickets are mentioned above. A flight from Chandigarh to Chennai can also be an option. It will take somewhere between 3-5 hours to reach Chandigarh. The cost of the tickets would be between Rs.3000-5000. Once you are in Chandigarh you can take a bus from there to Manali which will take 10 hours to reach. The tickets will be between Rs.700-1400.