You can take a flight till Delhi which will take around 2 hour 30 minutes to reach Delhi from Visakhapatnam. The cost of the flight would be somewhere between Rs.4000-6000. Once you reach Delhi you can take a bus to Manali which will take 15 hours. The cost of the tickets would be somewhere between Rs.750-1800. You can take a train to Delhi. It will take around 30 hours to reach. The tickets of the same would be in between Rs.250-2500. You can take a flight from Chandigarh which will take around 5 hours. The cost would be Rs.5000-9000. You can take a bus to Manali which will take 10 hours to reach Manali. The cost of the bus would be in between Rs.700-1400. Visakhapatnam to Manali journey via flight is always best option here.