Sit on the Left side of the plane for the best views on flights from Bangkok to London. Left side wins at both ends of the flight. During the long cruise over Central Asia and Eastern Europe, the left side also tends to offer better views of the Himalayas on departure and the Alps on approach into Europe depending on exact routing, making it the stronger choice throughout.

During takeoff from Bangkok International (BKK), sit on the Left side for the best views. Suvarnabhumi's primary departure runway 19L/R sends aircraft southward before turning northwest toward Europe. A left-side seat gives you the Bangkok cityscape and the Chao Phraya River snaking through the urban grid as you climb out. The Gulf of Thailand briefly appears to the south before the turn. Notable sights include: Chao Phraya River bends through central Bangkok, Bangkok CBD skyline including Baiyoke Tower II, Gulf of Thailand coastline to the south, Samut Prakan industrial waterfront.

When landing at Gatwick (LGW), sit on the Left side for the best views. Gatwick predominantly uses runway 08R/26L, with westbound landings on 26L bringing aircraft in from the east over the Surrey and Sussex countryside. A left-side seat on approach gives you views over the North Downs and the urban sprawl of Croydon and south London in the distance. The right side faces open farmland with less visual interest. Notable sights include: North Downs chalk ridge in Surrey, Crawley town grid directly below on short final, M23 motorway corridor, Ashdown Forest heathland to the southeast.

The flight from Bangkok International (BKK) to Gatwick (LGW) takes Approximately 11 to 12 hours.

The route typically tracks northwest over Myanmar and Bangladesh, then across the Himalayas or northern India, over Pakistan and Afghanistan, across the Caspian Sea, then over the Caucasus or Black Sea region, continuing over Romania, Hungary, Austria, and Germany before descending into southern England. Notable features include the Ganges plain, Hindu Kush and Pamir mountain ranges visible as distant ridgelines, the Caspian Sea as a large inland body of water, the Alps as a dramatic snow-covered barrier in central Europe, and the Rhine valley before crossing the English Channel.