Sit on the Right side of the plane for the best views on flights from Calcutta to Dehra Dun. While takeoff favors left for river views, the landing approach to Dehradun's dramatic Shivalik foothills and the visual climax of the flight strongly favor right seats. The Doon Valley's mountain-rimmed geography is one of India's most striking aerial views.

During takeoff from Netaji Subhash Chandra Bose International (CCU), sit on the Left side for the best views. CCU typically departs eastbound (Runway 09) or westbound (Runway 27). For either direction, left seats offer views of the Hooghly River's serpentine path through Calcutta's industrial zones and the broader Ganges Delta wetlands. Right seats face inland toward built-up areas with less geographic interest. Notable sights include: Hooghly River (immediate foreground, winding through city), Ganges Delta wetlands (eastern expanse), Calcutta's port infrastructure (southern approach), Eastern Bypass corridor.

When landing at Dehradun (DED), sit on the Right side for the best views. Approaching Dehradun typically uses Runway 15 (southeast approach) or Runway 33 (northwest approach). Right seats on a southeast approach capture the Shivalik Range's foothills rising dramatically from the Doon Valley floor. On a northwest approach, right seats still favor views of the valley's eastern rim and the Mussoorie Ridge. Notable sights include: Shivalik Range foothills (eastern and northern rim of valley), Doon Valley floor (agricultural plains), Mussoorie Ridge (northern skyline), Rajpur Road corridor (southern approach).

The flight from Netaji Subhash Chandra Bose International (CCU) to Dehradun (DED) takes Approximately 1 hour 15 minutes.

The flight path crosses the Indo-Gangetic Plain northwestward. Notable features include the Ganges River's main channel (visible as a wide, meandering brown ribbon around 45 minutes into flight), the transition from flat delta to gently rolling terrain near Meerut, and the progressive appearance of the Himalayan foothills' blue silhouette on the horizon as the aircraft approaches Dehradun. The Shivalik Range becomes increasingly prominent in the final 20 minutes of descent.