Sit on the Left side of the plane for the best views on flights from Paris to Seoul. The left side wins overall because the Paris departure view is genuinely spectacular and hard to beat — central Paris laid out below you is one of the best urban departure views in the world. En route, the left side also faces south during the Siberian overfly, keeping you oriented toward the more interesting terrain of Central Asia and Mongolia rather than the Arctic Ocean. The landing right-side advantage at ICN is real but the views are more industrial than scenic.

During takeoff from Charles De Gaulle (CDG), sit on the Left side for the best views. CDG typically departs eastbound on runways 09L/09R or northeastbound on 27R/27L depending on wind. On the dominant eastbound departure, the left side gives you a clear view south over Paris — the Seine river bends, the Eiffel Tower, and the dense urban grid of central Paris are all visible before you climb out over the Marne valley. The right side faces north toward flat Picardy farmland with little of interest. Notable sights include: Seine river bends through central Paris, Eiffel Tower (visible as a thin spire from altitude), Bois de Boulogne forest patch west of the city, Marne river valley to the southeast.

When landing at Incheon International (ICN), sit on the Right side for the best views. ICN sits on reclaimed land between Yeongjong Island and the mainland, and aircraft typically approach from the east or southeast on runway 33L/33R or 15L/15R. On the common northwestbound approach (runway 33), the right side faces east toward the Korean mainland, giving views over the Han River estuary, the western edge of Seoul's urban sprawl, and the mountainous terrain of Gyeonggi Province. The left side faces out over the Yellow Sea with little to see. Notable sights include: Han River estuary and tidal flats, western Seoul urban grid visible in the distance, Gyeonggi mountain ridgelines to the east, Incheon port container terminals.

The flight from Charles De Gaulle (CDG) to Incheon International (ICN) takes Approximately 11 to 12 hours.

The route tracks northeast over Germany and Poland, then across Belarus and into Russian airspace over western Siberia. The flight crosses the vast West Siberian Plain — flat, river-laced taiga and wetlands. Over central Siberia the terrain rises slightly with the Central Siberian Plateau visible below. The route then crosses Lake Baikal (one of the most distinctive features from altitude — a long narrow dark blue slash in the landscape), continues over the Mongolian steppe and the Gobi Desert fringe, crosses the Yellow Sea, and descends into Incheon. Lake Baikal is the single most visually striking midpoint feature on this route.