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Flights between Chiang Mai (CNX) and Seoul (ICN)

Chiang Mai International Airport, Thailand ↔ Incheon International Airport, South Korea

A direct route between Chiang Mai and Seoul appears in the OpenFlights route network.

Airlines currently operating this route:

Observed from recent schedules · as of 21 Jul 2026 — sampled, not a live timetable; confirm with the airline.

Air Busan (BX)EASTAR JET (ZE)Jeju Air (7C)Jin Air (LJ)
Distance
3,382 km
2,101 miles
Est. flight time
4h 44m
great-circle estimate
Time difference
~2h
varies with DST
View this route on the live map →Search fares on Skyscanner ↗

Climate

Typical monthly temperatures in Thailand

Jan
32°
37/27
10mm
Feb
33°
38/28
20mm
Mar
34°
39/29
30mm
Apr
35°
40/30
60mm
May
34°
39/29
180mm
Jun
33°
38/28
200mm
Jul
32°
37/27
200mm
Aug
32°
37/27
250mm
Sep
32°
37/27
300mm
Oct
31°
36/26
200mm
Nov
31°
36/26
50mm
Dec
31°
36/26
10mm

Mean °C (high/low below), avg. rainfall mm · country-level monthly normals, not airport-specific.

Typical monthly temperatures in South Korea

Jan
3°
8/-2
20mm
Feb
6°
11/1
25mm
Mar
11°
16/6
50mm
Apr
18°
23/13
70mm
May
23°
28/18
100mm
Jun
27°
32/22
130mm
Jul
29°
34/24
350mm
Aug
30°
35/25
290mm
Sep
26°
31/21
170mm
Oct
20°
25/15
50mm
Nov
12°
17/7
50mm
Dec
5°
10/0
25mm

Mean °C (high/low below), avg. rainfall mm · country-level monthly normals, not airport-specific.

Travel advisories

Thailand: Caution — some areas (UK FCDO) ↗South Korea: Normal precautions (UK FCDO) ↗

Common questions

How far is Chiang Mai from Seoul?

Chiang Mai (CNX) and Seoul (ICN) are around 3,382 km (2,101 miles) apart — an estimated 4h 44m by air. Distances and flight times are great-circle estimates.

Which airlines have operated the CNX–ICN route?

Airlines recorded operating this route in the OpenFlights network include Air Busan, EASTAR JET, Jeju Air, Jin Air. This reflects historical scheduled service and may be out of date.

What is the time difference between Chiang Mai and Seoul?

Time difference ~ 2 hours (varies with daylight-saving).

When is it warmest in South Korea?

Across South Korea, the warmest month on average is August, with mean temperatures around 30°C. These are country-level monthly climate normals, not airport-specific.

Are there travel advisories for Thailand and South Korea?

The UK FCDO currently rates Thailand as Caution — some areas; The UK FCDO rates South Korea as Normal precautions. Check the official sources before you travel.

Distances and flight times are great-circle estimates, not booked block times.