Sit on the Right side of the plane for the best views on flights from Delhi to London. The right side wins overall because the Delhi departure view over the historic city core — Red Fort, the Yamuna, the Rajpath axis — is genuinely spectacular and hard to match. During the cruise, the right side also faces south over Afghanistan and Iran where the Zagros Mountains and Caspian coastline are visible. The Heathrow landing advantage on the left is real but shorter in duration.

During takeoff from Indira Gandhi International (DEL), sit on the Right side for the best views. IGI Airport typically departs westward or northwestward on runways 28/29, so the right side (north-facing) gives you a clear view over central Delhi — Connaught Place, the Red Fort area, and the dense urban grid of Old Delhi. The left side faces south toward less distinctive suburban sprawl. Notable sights include: Red Fort and Old Delhi's dense urban core, Connaught Place's circular road layout visible from low altitude, Yamuna River snaking northeast through the city, New Delhi's Rajpath/Kartavya Path ceremonial axis.

When landing at Heathrow (LHR), sit on the Left side for the best views. Heathrow's primary landing runways (09L/09R) bring aircraft in from the west heading east, so the left side (north-facing) looks over Windsor, the Thames Valley, and central London on the approach. The right side faces south toward Surrey's less distinctive suburban landscape. Notable sights include: Windsor Castle and Windsor Great Park directly below on final approach, Thames River winding eastward toward central London, Wembley Stadium arch visible to the northeast in the middle distance, the City of London skyline on the horizon to the east.

The flight from Indira Gandhi International (DEL) to Heathrow (LHR) takes Approximately 8 to 9 hours.

The route tracks northwest from Delhi over Pakistan's Punjab plains, then over the Hindu Kush foothills near Kabul, across eastern Iran and the Zagros Mountain range (a dramatic series of parallel folded ridges visible from cruise altitude), over the Caspian Sea's southern shoreline, across the Caucasus or Black Sea depending on routing, then over Eastern Europe — Poland or Germany — before descending across the North Sea into England. The Zagros Mountains over Iran and the snow-capped Hindu Kush near the Afghan-Pakistan border are the most visually striking features at cruise altitude.