AirportMiles

Sapporo (CTS) – Seoul (ICN)

Flights on GoogleSkyscanner
Distance, flight time and the airlines that fly it, from open data.
Distance
1,424 km
885 mi · 769 nm
Flight time
2 h 30 min
Estimate from distance
Time difference
none
CO2 per passenger
179 kg
One way, economy, incl. RF (106 kg CO2 only)
Passengers, 6 months
600,165
Jan 2026 – Jun 2026
Flights / week
119
Both directions, average
Seats filled
—
Airlines nonstop
6
KE, ZE, LJ

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

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

The way there

Heading from CTS
251°
Heading from ICN
61°
Halfway point
40.37, 133.77
Great-circle km
1,421 km (sphere, for EU261)
Clocks
Same time in both

The estimate for a route without real times is 2 h 30 min; how it is worked out is on Sources.

Passengers per month, both directions (Jan 2026 – Jun 2026)Busiest: January 2026: 144,163 passengers
050K100K150KJan144.2KFebMarAprMayJun
Show as a table
Month Passengers
Jan 2026144,163
Feb 2026131,679
Mar 202689,771
Apr 202654,460
May 202677,135
Jun 2026102,957
Flights per month, both directions (Jan 2026 – Jun 2026)Busiest: January 2026: 681 flights
05001KJan681FebMarAprMayJun
Show as a table
Month Flights
Jan 2026681
Feb 2026616
Mar 2026548
Apr 2026324
May 2026434
Jun 2026484

Airlines flying CTS–ICN nonstop

Airline Flights / week Share of passengers
KEKorean Air Lines26
23%
ZEEastar Jet27
21%
LJJin Air17
18%
7CJeju Air21
15%
TWTrinity Airways14
13%
OZAsiana Airlines14
11%

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: 1,421 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 Sapporo and Seoul

ICNGMP
CTS1,4241,393
OKD1,4131,382

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

More routes from CTS

Route Distance Passengers / year
CTS → SYD8,550 km 18,591

More routes from ICN

Route Distance Passengers
ICN → NRT1,260 km 2,519,026 (6 mo)
ICN → KIX862 km 2,313,960 (6 mo)
ICN → FUK563 km 1,708,245 (6 mo)
ICN → HKG2,067 km 1,316,010 (6 mo)
ICN → TPE1,460 km 1,184,972 (6 mo)
ICN → PVG821 km 1,111,272 (6 mo)
ICN → BKK3,665 km 950,069 (6 mo)
ICN → DAD2,976 km 941,076 (6 mo)
ICN → SIN4,614 km 900,158 (6 mo)
ICN → TAO580 km 797,360 (6 mo)

Questions

Sapporo (CTS) and Seoul (ICN) are 1,424 km (885 miles, 769 nautical miles) apart, measured along the shortest path over the earth's surface.