Cheju to Seoul is 280 miles (451 km), a flight of about 1 hour.
The right side combines Jeju's volcanic Hallasan scenery at departure with Seoul's river and skyline views at arrival, giving it clearly more visual variety than the left side's largely featureless Yellow Sea crossing.
Flight Path
Cruise is brief and mostly over the Yellow Sea along Korea's southwest coast, with occasional views of small islands such as Chuja-do before the route curves north toward Incheon Bay and the Han River estuary near Seoul.
Great circle distance and headings ›Phase by phase

Takeoff from CJU
RIGHTClimbing out of Jeju, the right side faces the island's interior, where Hallasan's broad volcanic cone and the scattering of smaller parasitic cones (oreum) dominate the view. The left side mostly shows open Yellow Sea with little definition.

Landing at GMP
RIGHTOn approach into Gimpo, the eastern side typically offers views over the Han River and Seoul's dense skyline, including landmarks like Namsan and the city's high-rise districts, as the aircraft aligns with the runway. The western side mainly shows flatter Incheon-area terrain and tidal mudflats with less visual interest.
Landmarks on this routeAll landmarks →
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About This Route
Which side of the plane should I sit on flying from Jeju International (CJU) to Gimpo (GMP)?
Sit on the Right side of the plane for the best views on flights from Cheju to Seoul. The right side combines Jeju's volcanic Hallasan scenery at departure with Seoul's river and skyline views at arrival, giving it clearly more visual variety than the left side's largely featureless Yellow Sea crossing.
What can I see during takeoff from Jeju International in Cheju?
During takeoff from Jeju International (CJU), sit on the Right side for the best views. Climbing out of Jeju, the right side faces the island's interior, where Hallasan's broad volcanic cone and the scattering of smaller parasitic cones (oreum) dominate the view. The left side mostly shows open Yellow Sea with little definition. Notable sights include: Hallasan volcanic peak, Jeju's oreum cinder cones, coastal cliffs near Seongsan Ilchulbong, Jeju Strait.
What can I see when landing at Gimpo in Seoul?
When landing at Gimpo (GMP), sit on the Right side for the best views. On approach into Gimpo, the eastern side typically offers views over the Han River and Seoul's dense skyline, including landmarks like Namsan and the city's high-rise districts, as the aircraft aligns with the runway. The western side mainly shows flatter Incheon-area terrain and tidal mudflats with less visual interest. Notable sights include: Han River, Seoul skyline near Yeouido and Namsan, Bukhansan mountain silhouette, Gimpo's riverside farmland.
How long is the flight from Cheju to Seoul?
The flight from Jeju International (CJU) to Gimpo (GMP) takes about 1 hour. The shortest flight path between them is 280 miles (451 km); winds and air traffic control usually add a few percent.
What does the Cheju to Seoul flight path pass over?
Cruise is brief and mostly over the Yellow Sea along Korea's southwest coast, with occasional views of small islands such as Chuja-do before the route curves north toward Incheon Bay and the Han River estuary near Seoul.