Sit on the Right side of the plane for the best views on flights from London to Colombo. The right side wins overall. The London departure view is genuinely spectacular with the Thames and city skyline, and throughout the flight the right side faces generally south, picking up the Persian Gulf coastline, the Indian subcontinent's western Ghats coast, and the approach to Sri Lanka from the northwest gives reasonable coastal views on both sides. The London departure experience on the right is the single most dramatic moment of the flight.

During takeoff from Heathrow (LHR), sit on the Right side for the best views. Heathrow departures heading east on runway 27L/27R (westerly wind departures) or climbing out eastbound on 09L/09R give the right side views over central London. A right-side seat captures the Thames snaking through the city, the City of London skyline, and the O2 Arena dome as the aircraft banks southeast toward its route. Notable sights include: River Thames bends through central London, City of London skyscrapers (Shard, Gherkin cluster), Windsor Castle to the west during initial climb, O2 Arena dome at Greenwich.

When landing at Bandaranaike International (CMB), sit on the Left side for the best views. Aircraft approaching Bandaranaike from the west or northwest typically align with runway 04/22. On approach from the northwest descending over the Indian Ocean, the left side faces east toward the Sri Lankan coastline and Colombo's urban waterfront. The left seat gets the coastal lagoons, Colombo harbour, and the green interior hills as the aircraft turns onto final. Notable sights include: Colombo harbour and port, Negombo Lagoon just north of the airport, Sri Lankan coastline and Indian Ocean surf line, Colombo city skyline along the waterfront.

The flight from Heathrow (LHR) to Bandaranaike International (CMB) takes Approximately 10 to 11 hours.

The route typically tracks southeast over Europe, then across Turkey and the eastern Mediterranean, descending over the Persian Gulf region where the UAE coastline and Arabian Peninsula desert are visible. The aircraft then crosses the Arabian Sea, with the Indian coastline appearing around Mumbai and Goa on the right side, before the final overwater leg across the Laccadive Sea to Sri Lanka.