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Route · Asia

GMP Seoul ⇄ CJU Jeju

Seoul Gimpo International Airport (South Korea) and Jeju International Airport (South Korea): great-circle distance, estimated scheduled flight time each way, time difference and jet lag.

Distance451 km280 mi243 nautical miles
GMP → CJU1 h 35 minestimated block time
CJU → GMP1 h 35 minestimated block time
Clock change±0 hJeju vs Seoul, today
Great-circle route from Seoul (GMP) to Jeju (CJU)GMPSeoulCJUJeju
The shortest path over the Earth’s surface (great circle), drawn on a Natural Earth projection. Real flight paths bend around weather, winds and closed airspace.

Flight time each way

GMP → CJU

1 h 35 min

Estimated gate-to-gate scheduled time. Initial heading 184° (S).

Leave Seoul Sat 7 Nov, 10:00 local → arrive Jeju Sat 7 Nov, 11:35 local.

CJU → GMP

1 h 35 min

Estimated gate-to-gate scheduled time. Initial heading 3° (N).

Leave Jeju Sat 7 Nov, 10:00 local → arrive Seoul Sat 7 Nov, 11:35 local.

The two directions differ by 0 minutes in our estimate: this route runs mostly north–south, so the prevailing westerly winds make little difference. How we estimate it.

Distance

Great-circle distance451 km · 280 mi · 243 nmi
Initial heading184° (S) from GMP; 3° (N) from CJU
Farthest from the equator37.6°N
Crossesneither the equator nor the 180th meridian
Share of the longest possible trip2% of the 20,015 km to the far side of the Earth

Time zones and jet lag

GMPAsia/Seoul — UTC+9 now; UTC+9 all year (no daylight saving time)
CJUAsia/Seoul — UTC+9 now; UTC+9 all year (no daylight saving time)
DifferenceJeju is on the same clock as Seoul today.

Jet lag, flying GMP → CJU. No time-zone change, so no jet lag from the clock — only the usual tiredness of travel.

General information, not medical advice.

The two airports

GMP Seoul Gimpo International AirportSeoul, South Korea · longest runway 11,811 ft3,600 m CJU Jeju International AirportJeju, South Korea · longest runway 10,433 ft3,180 m

More routes from GMP and CJU

GMPHND Seoul – Tokyo 1,181 km734 mi · 2 h 15 min

Routes of a similar length

LHRDUB London – Dublin 449 km279 mi · 1 h 35 min MEXGDL Mexico City – Guadalajara 459 km285 mi · 1 h 35 min MUCBER Munich – Berlin 462 km287 mi · 1 h 35 min FRABER Frankfurt – Berlin 431 km268 mi · 1 h 30 min

Need a different pair? The flight-time calculator works for any two of 3,245 airports. Not covered: which airlines fly this route, schedules, fares and live status — that data is proprietary and we don’t guess it.

Photos on airport pages are credited there. Estimates are rounded to 5 minutes; typical error about 13 minutes (validation).