Incheon International Airport
Seoul, South KoreaICN / RKSI
International hub · 99 direct destinations · 4 runways · longest runway 13,123 ft
59 °F · FogSource: METAR observation via the NOAA Aviation Weather Center
Route
Same local time in Seoul and Saga.
Observed nonstop
Frequency
Daily at most
On average around 1 flights a day, observed from October 2025 to September 2026.
Through the year
In October 2025 we saw less traffic at Seoul in general than usual; compare that month with care.
Airlines
Through the day
Local time in Seoul. Most departures between 08:00 and 11:00.
Through the week
Fleet
| Month | Per day | Seen | Airlines |
|---|---|---|---|
| January 2026 | 1 | 3 |
|
| February 2026 | 1 | 16 |
|
| March 2026 | 1 | 17 |
|
| April 2026 | 1 | 15 |
|
| May 2026 | 1 | 13 |
|
| June 2026 | Not seen in this month. | ||
| July 2026 | 1 | 16 |
|
| August 2026 | 1 | 17 |
|
| September 2026 | 1 | 17 |
|
| October 2025 | 1.5 | 3 |
|
| November 2025 | 1 | 13 |
|
| December 2025 | 1 | 14 |
|
From observed callsign routes on ICN-HSG - not a booking guarantee.
Seoul, South KoreaICN / RKSI
International hub · 99 direct destinations · 4 runways · longest runway 13,123 ft
59 °F · FogSource: METAR observation via the NOAA Aviation Weather Center
Saga, JapanHSG / RJFS
Regional airport · 3 direct destinations · 1 runway · longest runway 6,562 ft
57 °F · ClearSource: METAR observation via the NOAA Aviation Weather Center
Same journey, a different airport nearby - with an observed direct connection.
The observed direct connection between Incheon International Airport (ICN) and Kyushu Saga International Airport (HSG) covers approximately 369 mi. The estimated flight time is around 1h 15m. T'way Air has been observed on this connection in the available route data.
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.