Sit on the Right side of the plane for the best views on flights from Seoul to Singapore. The right side wins overall because the takeoff view over the Han River and Seoul is genuinely spectacular and hard to beat. During the cruise over the South China Sea the views are largely open water on both sides, so the takeoff experience tips the balance. The landing left-side view of the port is impressive but more industrial than scenic.

During takeoff from Gimpo (GMP), sit on the Right side for the best views. Gimpo typically departs southward on runway 14R/32L or uses runway 14L. A southbound departure on the right side gives you views over the Han River, central Seoul's dense urban grid, and Namsan hill with N Seoul Tower. The left side faces west toward the Yellow Sea mudflats which are less dramatic. Notable sights include: Han River and its bridges through central Seoul, Namsan hill and N Seoul Tower, Bukhansan granite peaks to the north receding behind, Incheon coastal mudflats on the far left horizon.

When landing at Singapore Changi (SIN), sit on the Left side for the best views. Changi typically lands on runways 02L/02C from the south, meaning the aircraft approaches from the south heading north. The left side faces west over the Singapore Strait, Sentosa Island, and the southern harbor with its massive container port at Tanjong Pagar and Pasir Panjang. The right side faces east over open sea and Batam Island in Indonesia. Notable sights include: Singapore container port at Tanjong Pagar and Pasir Panjang terminals, Sentosa Island and its causeway, Singapore Strait shipping lanes with anchored vessels, southern Singapore urban skyline including CBD towers.

The flight from Gimpo (GMP) to Singapore Changi (SIN) takes Approximately 6 hours 30 minutes to 7 hours.

The flight tracks south-southwest over the Yellow Sea, crossing the southern tip of the Korean Peninsula near Busan, then over the East China Sea. It passes over or near the northern Philippines or skirts the South China Sea depending on routing, with the Vietnamese coastline sometimes visible to the right. The Malay Peninsula coastline and Strait of Malacca appear in the final hour of descent, with Johor Bahru and the Causeway visible just before Singapore.