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Flights between Seoul (ICN) and Nagasaki (NGS)

Incheon International Airport, South Korea ↔ Nagasaki Airport, Japan

A direct route between Seoul and Nagasaki 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.

Korean Air (KE)
Distance
596 km
370 miles
Est. flight time
1h 15m
great-circle estimate
Time difference
None
varies with DST
View this route on the live map →Search fares on Skyscanner ↗

Climate

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.

Typical monthly temperatures in Japan

Jan
10°
15/5
50mm
Feb
10°
15/5
60mm
Mar
13°
18/8
110mm
Apr
18°
23/13
130mm
May
23°
28/18
130mm
Jun
26°
31/21
170mm
Jul
30°
35/25
150mm
Aug
31°
36/26
170mm
Sep
27°
32/22
220mm
Oct
22°
27/17
200mm
Nov
17°
22/12
95mm
Dec
12°
17/7
50mm

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

Travel advisories

South Korea: Normal precautions (UK FCDO) ↗Japan: Normal precautions (UK FCDO) ↗

Common questions

How far is Seoul from Nagasaki?

Seoul (ICN) and Nagasaki (NGS) are around 596 km (370 miles) apart — an estimated 1h 15m by air. Distances and flight times are great-circle estimates.

Which airlines have operated the ICN–NGS route?

Airlines recorded operating this route in the OpenFlights network include Korean Air. This reflects historical scheduled service and may be out of date.

What is the time difference between Seoul and Nagasaki?

Both airports keep the same time — no time difference.

When is it warmest in Japan?

Across Japan, the warmest month on average is August, with mean temperatures around 31°C. These are country-level monthly climate normals, not airport-specific.

Are there travel advisories for South Korea and Japan?

The UK FCDO currently rates South Korea as Normal precautions; The UK FCDO rates Japan as Normal precautions. Check the official sources before you travel.

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