Sit on the Right side of the plane for the best views on flights from Singapore to Seoul. The right side wins overall because the Seoul approach on the right delivers the most dramatic and sustained views — the Han River, Bukhansan peaks, and the full Seoul urban panorama are genuinely spectacular on a clear day. The left side at takeoff from Singapore is excellent but shorter-lived. Switching to the right side for the Seoul arrival is the better single-seat strategy if you can only pick one side.

During takeoff from Singapore Changi (SIN), sit on the Left side for the best views. Changi typically departs eastward on runway 02L/20R or 02C/20C. A left-side seat after takeoff heading north gives views back over Singapore's central business district skyline, Marina Bay, and the southern islands as the aircraft banks left over the Strait of Singapore. The dense urban grid of Singapore city is clearly visible before the aircraft heads out over the South China Sea. Notable sights include: Marina Bay Sands and CBD skyline, Sentosa Island and Keppel Harbour, Batam Island (Indonesia) to the south, Johor Strait and southern Malaysia coastline.

When landing at Gimpo (GMP), sit on the Right side for the best views. GMP sits on the Han River's south bank and aircraft typically approach from the south or southeast on runway 32L/32R, heading northwest. A right-side seat on approach gives a direct view of the Han River, the Bukhansan massif north of Seoul, and the dense urban sprawl of the city. The approach path over the Han River puts the river and central Seoul squarely on the right side. Notable sights include: Han River and its bridges through central Seoul, Bukhansan National Park granite peaks north of the city, Namsan hill and N Seoul Tower in central Seoul, dense Gangnam district grid south of the Han River.

The flight from Singapore Changi (SIN) to Gimpo (GMP) takes Approximately 6 hours 30 minutes.

The route tracks north-northeast over the South China Sea, passing east of Vietnam's coastline and the Gulf of Tonkin, then over southern China's Guangdong and Fujian provinces with their hilly interior terrain, across the East China Sea, and over the Yellow Sea before descending into Seoul. The Yellow Sea crossing and the Korean Peninsula's western coastal plains are visible in the final hour of flight.