The cost of traveling to Gangtok or Darjeeling depends on several factors such as your travel style, the time of year, and the cost of living in each place. However, in general, Gangtok is often considered to be more expensive than Darjeeling.
Gangtok is known for its high-end hotels and restaurants, and the cost of living is generally higher compared to Darjeeling. There are also many activities that have entrance fees, such as visiting the Nathula Pass and the Tashi Viewpoint, which can add to the cost of your trip.
In Darjeeling, while there are also high-end options available, there are also many budget-friendly accommodations, street food stalls, and local markets selling affordable souvenirs. The cost of transportation is relatively low in Darjeeling, and there are many free or low-cost activities such as visiting the Darjeeling Himalayan Railway, Rock Garden and Ganga Maya Park, and Mall Road.
Ultimately, the cost of traveling to Gangtok or Darjeeling will depend on your personal travel style, budget, and the activities you plan to do. You may find that Gangtok is more affordable for you or vice versa.