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Route

Seoul → Kumamoto

ICNSeoulIncheon International Airport
KMJKumamotoKumamoto Airport
Distance
405 mi
Estimated flight time
~1h 20m

Same local time in Seoul and Kumamoto.

Observed nonstop

View the reverse route

How often does this route fly?

Frequency

A couple of times a day

On average around 2 flights a day, observed from October 2025 to September 2026.

2
flights per day
2
busiest month · Jan
1
quietest month · Dec
1 hr 3 min
measured flight time
10 / 12
months seen

Through the year

Per day, month by month

  1. 2Jan2026
  2. 2Feb
  3. 2Mar
  4. 2Apr
  5. 2May
  6. 2Jun
  7. 1Jul
  8. 1Aug
  9. 2Sep
  10. –Oct2025
  11. –Nov
  12. 1Dec

In October 2025 we saw less traffic at Seoul in general than usual; compare that month with care.

Airlines

Who flies it

T'way Airall year
Korean Airall year

Through the day

Departure times

Local time in Seoul. Most departures between 07:00 and 10:00.

  1. 00:00
  2. 01:00
  3. 02:00
  4. 03:00
  5. 04:00
  6. 05:00
  7. 06:00
  8. 07:00
  9. 08:00
  10. 09:00
  11. 10:00
  12. 11:00
  13. 12:00
  14. 13:00
  15. 14:00
  16. 15:00
  17. 16:00
  18. 17:00
  19. 18:00
  20. 19:00
  21. 20:00
  22. 21:00
  23. 22:00
  24. 23:00

Through the week

By weekday

  1. 1.2Mon
  2. 1.4Tue
  3. 1.1Wed
  4. 1.4Thu
  5. 1.3Fri
  6. 1.2Sat
  7. 1.5Sun

Fleet

Aircraft observed

  1. Boeing 737-800B73853%
  2. Airbus A220-300BCS344%
  3. Airbus A321neoA21N3%
All the numbers in a table
MonthPer daySeenAirlines
January 2026260
  • Korean Air31×
  • T'way Air29×
February 2026253
  • T'way Air27×
  • Korean Air26×
March 2026251
  • Korean Air27×
  • T'way Air24×
April 2026228
  • Korean Air16×
  • T'way Air12×
May 2026255
  • T'way Air28×
  • Korean Air27×
June 2026252
  • Korean Air28×
  • T'way Air24×
July 2026142
  • T'way Air30×
  • Korean Air12×
August 2026141
  • T'way Air29×
  • Korean Air12×
September 2026257
  • T'way Air30×
  • Korean Air27×
October 2025Not seen in this month.
November 2025Not seen in this month.
December 2025120
  • T'way Air11×
  • Korean Air9×

Airlines observed on this route

From observed callsign routes on ICN-KMJ - not a booking guarantee.

Korean Air

KE · KAL

Hub: ICN Seoul

64 departure airportsView airline →

T'way Air

TW · TWB

Hub: ICN Seoul

27 departure airportsView airline →

About this route

  • International route: Seoul and Kumamoto are in different countries.
  • The opposite direction has also been observed as a direct connection.
  • Direct destinations observed from Seoul: 99.
  • Direct destinations observed from Kumamoto: 11.

The airports on this route

Incheon International Airport

Seoul, South KoreaICN / RKSI

International hub · 99 direct destinations · 4 runways · longest runway 13,123 ft

63 °F · ClearSource: METAR observation via the NOAA Aviation Weather Center

Airport pageAll direct destinations

Kumamoto Airport

Kumamoto, JapanKMJ / RJFT

Regional airport · 11 direct destinations · 1 runway · longest runway 9,839 ft

55 °F · ClearSource: METAR observation via the NOAA Aviation Weather Center

Airport pageAll direct destinations

Alternative airports for this journey

Same journey, a different airport nearby - with an observed direct connection.

ICN HSGKyushu Saga International AirportSaga is about 39 mi from Kumamoto.View route →ICN FUKFukuoka AirportFukuoka is about 57 mi from Kumamoto.View route →ICN OITOita AirportŌita is about 68 mi from Kumamoto.View route →ICN KKJKitakyushu AirportKitakyushu is about 70 mi from Kumamoto.View route →

About the route from Seoul to Kumamoto

The observed direct connection between Incheon International Airport (ICN) and Kumamoto Airport (KMJ) covers approximately 405 mi. The estimated flight time is around 1h 20m. Korean Air and T'way Air have been observed on this connection in the available route data.

Frequently asked questions about this route

How far is Seoul from Kumamoto by air?
The great-circle distance between Incheon International Airport and Kumamoto Airport is approximately 405 mi.
How long is the flight from Seoul to Kumamoto?
Based on the distance, the estimated flight time is about 1h 20m. This is an estimate, not a schedule.
Is there a direct connection from Seoul to Kumamoto?
Yes, a direct connection between ICN and KMJ has been observed in our route data.
Which airlines have been observed on this route?
In the available route data: Korean Air and T'way Air.
How often is there a flight from Seoul to Kumamoto?
On average around 2 flights a day, measured over twelve months (October 2025 to September 2026) in the flight archive, with 459 observed flights. Mainly T'way Air, Korean Air. That is an observation, not a timetable.
What is the current time difference between Seoul and Kumamoto?
Same local time in Seoul and Kumamoto.

Where this data comes from

The route data comes from the flight archive (ADS-B, adsb.lol): which connections actually flew over the last twelve full months and who flew them, combined with our own airport, runway, and airline datasets. It is reference data about observed routes - not a current timetable and no claim about bookability.

The frequency and aircraft on this page come from the flight archive (ADS-B, 12 months, October 2025 to September 2026), summarized per route per month. We do not see every flight, so it is a floor, not a count.

Route data updated on October 11, 2026.