Sit on the Left side of the plane for the best views on flights from London to Denver. While the right side has a decent London departure view, the left side wins overall for the Rocky Mountain Front Range arrival into Denver — one of the most dramatic airport approaches in the world. The full panorama of the Rockies on final approach is genuinely exceptional and hard to beat.

During takeoff from Luton (LTN), sit on the Right side for the best views. Luton typically departs on runway 08 (eastbound) or 26 (westbound). On a westbound transatlantic departure via runway 26, the right side gives you a clear view south over the Chiltern Hills and the Thames Valley as you climb out. You'll see the urban sprawl of northwest London receding to the south, with the M25 orbital motorway visible as a clear arc. Notable sights include: Chiltern Hills escarpment to the south, northwest London urban spread, M25 motorway arc, Thames Valley corridor.

When landing at Denver International (DEN), sit on the Left side for the best views. Denver International sits on the plains east of the city, and aircraft typically land from the east on runway 16L/R or approach from the north. On a standard approach from the northeast, the left side delivers a spectacular panorama of the entire Front Range — the Rocky Mountains stretching from Pikes Peak in the south to Longs Peak in the north, with Denver's downtown grid clearly visible on the plains below the foothills. Notable sights include: Rocky Mountain Front Range, Denver downtown skyline, Longs Peak and the Indian Peaks, Pikes Peak on the southern horizon.

The flight from Luton (LTN) to Denver International (DEN) takes Approximately 9 to 10 hours.

The flight tracks northwest over Ireland and the Atlantic, crossing southern Greenland where the ice sheet and coastal fjords are visible in clear conditions. It then crosses the Canadian Maritime provinces and Quebec, with the St. Lawrence River and Laurentian highlands visible. Over the US Midwest, the Great Lakes may be visible to the south depending on routing, followed by the flat agricultural grid of Iowa and Nebraska before the terrain rises toward the Colorado Front Range.