The cost of a trip to Darjeeling from Kolkata depends on several factors such as the mode of transportation, length of stay, and your travel itinerary. On average, a budget trip from Kolkata to Darjeeling can cost anywhere from 5,000 to 10,000 Indian Rupees ($67 to $135 USD) per person for a 7-day trip, including local transportation, food, and accommodation.
If you want to travel by air, you can expect to spend more, with airfare prices ranging from 3,000 to 6,000 Indian Rupees ($40 to $80 USD) or more, depending on the airline and time of booking.
Note: This estimate is based on average costs and is intended to be used as a rough guide only. Your actual costs may be higher or lower, depending on your specific travel needs and preferences.