AirportMiles

Chiang Mai (CNX) – Seoul (ICN)

Flights on GoogleSkyscanner
Distance, flight time and the airlines that fly it, from open data.
Distance
3,382 km
2,101 mi · 1,826 nm
Flight time
4 h 50 min
Estimate from distance
Time difference
2 h
CO2 per passenger
425 kg
One way, economy, incl. RF (251 kg CO2 only)
Passengers, 6 months
162,392
Jan 2026 – Jun 2026
Flights / week
37
Both directions, average
Seats filled
—
Airlines nonstop
5
ZE, 7C, KE

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

The way there

Heading from CNX
46°
Heading from ICN
240°
Halfway point
28.82, 111.48
Great-circle km
3,382 km (sphere, for EU261)
Clocks
Seoul is 2 h ahead of Chiang Mai

The estimate for a route without real times is 4 h 50 min; how it is worked out is on Sources.

Passengers per month, both directions (Jan 2026 – Jun 2026)Busiest: January 2026: 53,260 passengers
020K40K60KJan53.3KFebMarAprMayJun
Show as a table
Month Passengers
Jan 202653,260
Feb 202647,816
Mar 202627,542
Apr 202611,691
May 202612,187
Jun 20269,896
Flights per month, both directions (Jan 2026 – Jun 2026)Busiest: January 2026: 305 flights
0200400Jan305FebMarAprMayJun
Show as a table
Month Flights
Jan 2026305
Feb 2026276
Mar 2026163
Apr 202670
May 202676
Jun 202659

Airlines flying CNX–ICN nonstop

Airline Flights / week Share of passengers
ZEEastar Jet9.5
26%
7CJeju Air9.0
24%
KEKorean Air Lines6.7
21%
LJJin Air6.6
17%
TWTrinity Airways4.7
12%

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: 3,382 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 Chiang Mai and Seoul

ICNGMP
CNX3,3823,413

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

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

Chiang Mai (CNX) and Seoul (ICN) are 3,382 km (2,101 miles, 1,826 nautical miles) apart, measured along the shortest path over the earth's surface.