JetSetAuthority

Route · Asia

GMP Seoul ⇄ HND Tokyo

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

Distance1,181 km734 mi638 nautical miles
GMP → HND2 h 15 minestimated block time
HND → GMP2 h 35 minestimated block time
Clock change±0 hTokyo vs Seoul, today
Great-circle route from Seoul (GMP) to Tokyo (HND)GMPSeoulHNDTokyo
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 → HND

2 h 15 min

Estimated gate-to-gate scheduled time. Initial heading 97° (E).

Leave Seoul Sat 7 Nov, 10:00 local → arrive Tokyo Sat 7 Nov, 12:15 local.

HND → GMP

2 h 35 min

Estimated gate-to-gate scheduled time. Initial heading 285° (WNW).

Leave Tokyo Sat 7 Nov, 10:00 local → arrive Seoul Sat 7 Nov, 12:35 local.

GMP-bound flights are the slower direction by about 15 minutes in our estimate: the route runs mostly east–west through latitudes where the prevailing westerly winds at cruise height are strong, so heading east rides a tailwind and heading west fights a headwind. How we estimate it.

Distance

Great-circle distance1,181 km · 734 mi · 638 nmi
Initial heading97° (E) from GMP; 285° (WNW) from HND
Farthest from the equator37.6°N
Crossesneither the equator nor the 180th meridian
Share of the longest possible trip6% 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)
HNDAsia/Tokyo — UTC+9 now; UTC+9 all year (no daylight saving time)
DifferenceTokyo is on the same clock as Seoul today.

Jet lag, flying GMP → HND. 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 HND Tokyo Haneda International AirportTokyo, Japan · longest runway 11,024 ft3,360 m

More routes from GMP and HND

GMPCJU Seoul – Jeju 451 km280 mi · 1 h 35 min HNDITM Tokyo – Osaka 404 km251 mi · 1 h 35 min SHAHND Shanghai – Tokyo 1,777 km1,104 mi · 2 h 55 min YVRHND Vancouver – Tokyo 7,558 km4,697 mi · 10 h 25 min SFOHND San Francisco – Tokyo 8,286 km5,148 mi · 11 h 30 min LHRHND London – Tokyo 9,592 km5,960 mi · 11 h 35 min JFKHND New York – Tokyo 10,875 km6,758 mi · 13 h 55 min

Routes of a similar length

LGAORD New York – Chicago 1,177 km731 mi · 2 h 35 min ATLDFW Atlanta – Dallas–Fort Worth 1,175 km730 mi · 2 h 30 min JFKORD New York – Chicago 1,188 km738 mi · 2 h 35 min SYDADL Sydney – Adelaide 1,164 km723 mi · 2 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).