How long is the flight from ICN to YNJ?

About 1 h 35 min gate to gate, estimated from the distance. Real times depend on winds and the routing.

Which airlines fly nonstop between ICN and YNJ?

Asiana Airlines, China Southern Airlines, Korean Air Lines, Air China, Jeju Air, China Eastern Airlines flew the route in Jan 2026 – Jun 2026, with 70 flights a week in both directions together.

How much EU261 compensation is a delay on ICN–YNJ 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 YNJ emit?

About 82 kg CO2e per economy passenger one way, including the extra warming effect of flying high (49 kg without it), using the UK government's 2026 conversion factors.

AirportMiles

Seoul (ICN) – Yanji (YNJ)

Flights on Google Skyscanner

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

Distance: 653 km; 406 mi · 353 nm
Flight time: 1 h 35 min; Estimate from distance
Time difference: 1 h
CO2 per passenger: 82 kg; One way, economy, incl. RF (49 kg CO2 only)
Passengers, 6 months: 263,045; Jan 2026 – Jun 2026
Flights / week: 70; Both directions, average
Seats filled: —
Airlines nonstop: 6; OZ, CZ, KE

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: 22°
Heading from YNJ: 204°
Halfway point: 40.19, 127.89
Great-circle km: 654 km (sphere, for EU261)
Clocks: Yanji is 1 h behind Seoul

The estimate for a route without real times is 1 h 35 min; how it is worked out is on Sources.

Passengers per month, both directions (Jan 2026 – Jun 2026)Busiest: June 2026: 53,968 passengers

Show as a table

Month	Passengers
Jan 2026	38,193
Feb 2026	40,015
Mar 2026	41,063
Apr 2026	42,769
May 2026	47,037
Jun 2026	53,968

Flights per month, both directions (Jan 2026 – Jun 2026)Busiest: June 2026: 346 flights

Show as a table

Month	Flights
Jan 2026	270
Feb 2026	272
Mar 2026	300
Apr 2026	302
May 2026	330
Jun 2026	346

Airlines flying ICN–YNJ nonstop

Airline	Flights / week	Passengers, 6 months	Share of passengers
OZAsiana Airlines	14	53,101	20%
CZChina Southern Airlines	14	52,099	20%
KEKorean Air Lines	14	49,732	19%
CAAir China	12	46,150	18%
7CJeju Air	9.1	36,250	14%
MUChina Eastern Airlines	7.2	25,713	10%

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: 654 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 Yanji

	YNJ
ICN	653
GMP	633

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 Yanji (YNJ) are 653 km (406 miles, 353 nautical miles) apart, measured along the shortest path over the earth's surface.