How long is the flight from ICN to KOJ?

About 1 h 40 min gate to gate, estimated from the distance. Real times depend on winds and the routing.

Which airlines fly nonstop between ICN and KOJ?

Korean Air Lines, Jeju Air, Eastar Jet flew the route in Jan 2026 – Jun 2026, with 24 flights a week in both directions together.

How much EU261 compensation is a delay on ICN–KOJ worth?

Neither EU261 nor UK261 applies: the route neither starts nor ends in the EU, EEA, Switzerland or the UK.

How much CO2 does a flight from ICN to KOJ emit?

About 93 kg CO2e per economy passenger one way, including the extra warming effect of flying high (55 kg without it), using the UK government's 2026 conversion factors.

AirportMiles

Seoul (ICN) – Kagoshima (KOJ)

Flights on Google Skyscanner

Distance, flight time and the airlines that fly it, from open data.

Distance: 740 km; 460 mi · 400 nm
Flight time: 1 h 40 min; Estimate from distance
Time difference: none
CO2 per passenger: 93 kg; One way, economy, incl. RF (55 kg CO2 only)
Passengers, 6 months: 109,527; Jan 2026 – Jun 2026
Flights / week: 24; Both directions, average
Seats filled: —
Airlines nonstop: 3; KE, 7C, ZE

Traffic: Incheon International Airport Corporation (Korea), scheduled passenger flights, Jan 2026 – Jun 2026. Distance: WGS-84 ellipsoid. CO2: UK DESNZ 2026 factors. Sources

Shortest path over the earth's surface (great circle). Real flights bend around weather, winds and airspace.

The way there

Heading from ICN: 147°
Heading from KOJ: 329°
Halfway point: 34.66, 128.66
Great-circle km: 741 km (sphere, for EU261)
Clocks: Same time in both

The estimate for a route without real times is 1 h 40 min; how it is worked out is on Sources.

Passengers per month, both directions (Jan 2026 – Jun 2026)Busiest: January 2026: 33,867 passengers

Show as a table

Month	Passengers
Jan 2026	33,867
Feb 2026	31,572
Mar 2026	22,187
Apr 2026	9,330
May 2026	9,274
Jun 2026	3,297

Flights per month, both directions (Jan 2026 – Jun 2026)Busiest: January 2026: 186 flights

Show as a table

Month	Flights
Jan 2026	186
Feb 2026	168
Mar 2026	122
Apr 2026	60
May 2026	62
Jun 2026	26

Airlines flying ICN–KOJ nonstop

Airline	Flights / week	Passengers, 6 months	Share of passengers
KEKorean Air Lines	13	60,929	56%
7CJeju Air	6.7	27,166	25%
ZEEastar Jet	4.7	21,432	20%

Both directions, Jan 2026 – Jun 2026. Airlines with at least one flight a month. Incheon International Airport Corporation (Korea), scheduled passenger flights. Sources

Delay compensation (EU261 / UK261)

Measured by great-circle distance: 741 km.

Neither EU261 nor UK261 covers this route: it neither starts nor ends in the EU, EEA, Switzerland or the UK. Other countries have their own rules (for example Canada's APPR or Brazil's ANAC rules).

Also owed for a cancellation with less than 14 days' notice or denied boarding. Not owed for extraordinary circumstances. On a connection, the distance to the final destination counts. From 23 October 2027 the EU's Regulation 2026/2202 applies; it keeps these amounts (what changes in 2027). Information, not legal advice.

Every airport pair between Seoul and Kagoshima

	KOJ
ICN	740
GMP	733

Kilometres. Linked numbers have a page of their own. All Seoul airports

More routes from ICN

Route	To	Distance	Passengers
ICN → NRT	Tokyo, Japan	1,260 km	2,519,026 (6 mo)
ICN → KIX	Osaka, Japan	862 km	2,313,960 (6 mo)
ICN → FUK	Fukuoka, Japan	563 km	1,708,245 (6 mo)
ICN → HKG	Hong Kong, Hong Kong	2,067 km	1,316,010 (6 mo)
ICN → TPE	Taoyuan, Taiwan	1,460 km	1,184,972 (6 mo)
ICN → PVG	Shanghai, China	821 km	1,111,272 (6 mo)
ICN → BKK	Bangkok, Thailand	3,665 km	950,069 (6 mo)
ICN → DAD	Da Nang, Vietnam	2,976 km	941,076 (6 mo)
ICN → SIN	Singapore, Singapore	4,614 km	900,158 (6 mo)
ICN → TAO	Qingdao, China	580 km	797,360 (6 mo)

Questions

Seoul (ICN) and Kagoshima (KOJ) are 740 km (460 miles, 400 nautical miles) apart, measured along the shortest path over the earth's surface.