Sit on the Left side of the plane for the best views on flights from Hong Kong to Calcutta. While takeoff offers excellent Hong Kong harbor views on the right, the landing approach into Calcutta on the left provides more sustained scenic interest—the Ganges Delta and Hooghly River are visually distinctive and occupy a longer portion of the descent. Left seats capture the more dramatic geographical transition.

During takeoff from Hong Kong International (HKG), sit on the Right side for the best views. Right-side seats capture the Victoria Harbour waterfront and Kowloon Peninsula as the aircraft climbs westward out of Hong Kong. The urban sprawl and harbor geometry are distinctive and visible for the first 10-15 minutes of flight. Notable sights include: Victoria Harbour, Kowloon Peninsula, New Territories, Hong Kong Island urban grid.

When landing at Netaji Subhash Chandra Bose International (CCU), sit on the Left side for the best views. Left-side seats provide views of the Ganges River delta and the approach into Calcutta from the east. The river's distinctive braided channels and the city's position on the Hooghly River are visible during descent, particularly in the final 20 minutes. Notable sights include: Hooghly River, Ganges Delta wetlands, Calcutta urban area, Sundarbans mangrove region (distant).

The flight from Hong Kong International (HKG) to Netaji Subhash Chandra Bose International (CCU) takes Approximately 4 hours 45 minutes to 5 hours 15 minutes.

The flight path crosses the Bay of Bengal heading northwest. Notable features include the Irrawaddy Delta and Myanmar coast (visible around the 2-hour mark if flying at cruise altitude), followed by the eastern coast of India and the transition into the Ganges Delta region. The Bay of Bengal itself offers open water views for roughly 2-3 hours of the flight. No major mountain ranges are visible at cruise altitude on this route, though the Eastern Ghats are distant and typically too hazy to distinguish clearly.