The best time to drive from Delhi to Manali is between May and June or September and October roads are clear and the views are stunning.
Start early from Delhi around 4–5 AM to avoid city traffic. Most groups break the journey at Chandigarh or Mandi for a night's rest since the full drive is around 550 km. Day two takes you through Kullu and the beautiful Beas river route before reaching Manali by afternoon.
Once in Manali, spend at least 3–4 days covering Solang Valley, Hadimba Temple, Old Manali, and if permits allow Rohtang Pass.
For a group of 10–12 people, travelling together makes the trip much more comfortable and affordable. If you're wondering about the Delhi to Manali tempo traveller cost, it ranges between ₹18,000 to ₹28,000 depending on the vehicle size and trip duration.