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
Route
Seoul → Singapore
ICN
SeoulIncheon International Airport
SeoulIncheon International AirportSIN
SingaporeSingapore Changi Airport
SingaporeSingapore Changi Airport- Distance
- 2,875 mi
- Estimated flight time
- ~6h 15m
Singapore is currently 1 hour behind Seoul.
Observed nonstop
How often does this route fly?
Frequency
Several times a day
On average around 9 flights a day, observed from October 2025 to September 2026.
- 9
- flights per day
- 10
- busiest month · Oct
- 1
- quietest month · Aug
- 5 hr 51 min
- measured flight time
- 12 / 12
- months seen
Through the year
Per day, month by month
- 9Jan2026
- 10Feb
- 10Mar
- 9Apr
- 4May
- 2Jun
- 2Jul
- 1Aug
- 7Sep
- 10Oct2025
- 10Nov
- 9Dec
In October 2025 we saw less traffic at Seoul in general than usual; compare that month with care.
Airlines
Who flies it
Korean Airall year
Singapore Airlinesall year
Jeju Airall year
Asiana Airlinesall year
T'way Airall year
Scootwinter
Atlas Airsummer
Air Incheonnow and then
Through the day
Departure times
Local time in Seoul. Most departures between 16:00 and 19:00.
- 00:00
- 01:00
- 02:00
- 03:00
- 04:00
- 05:00
- 06:00
- 07:00
- 08:00
- 09:00
- 10:00
- 11:00
- 12:00
- 13:00
- 14:00
- 15:00
- 16:00
- 17:00
- 18:00
- 19:00
- 20:00
- 21:00
- 22:00
- 23:00
Through the week
By weekday
- 7Mon
- 6.6Tue
- 7Wed
- 6.8Thu
- 6.3Fri
- 6.9Sat
- 7.1Sun
Fleet
Aircraft observed
- Boeing 787-10B78X21%
- Airbus A350-900A35921%
- Boeing 777-300ERB77W19%
- Airbus A330-300A3339%
- Boeing 747-400B7445%
All the numbers in a table
| Month | Per day | Seen | Airlines |
|---|---|---|---|
| January 2026 | 9 | 283 |
|
| February 2026 | 10 | 274 |
|
| March 2026 | 10 | 299 |
|
| April 2026 | 9 | 236 |
|
| May 2026 | 4 | 128 |
|
| June 2026 | 2 | 51 |
|
| July 2026 | 2 | 54 |
|
| August 2026 | 1 | 28 |
|
| September 2026 | 7 | 202 |
|
| October 2025 | 10 | 322 |
|
| November 2025 | 10 | 300 |
|
| December 2025 | 9 | 281 |
|
Airlines observed on this route
From observed callsign routes on ICN-SIN - not a booking guarantee.
About this route
- International route: Seoul and Singapore 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 Singapore: 71.
The airports on this route
Singapore Changi Airport
Singapore, SingaporeSIN / WSSS
International hub · 71 direct destinations · 3 runways · longest runway 13,123 ft
84 °F · CloudySource: METAR observation via the NOAA Aviation Weather Center
Alternative airports for this journey
Same journey, a different airport nearby - with an observed direct connection.
About the route from Seoul to Singapore
The observed direct connection between Incheon International Airport (ICN) and Singapore Changi Airport (SIN) covers approximately 2,875 mi. The estimated flight time is around 6h 15m. Air Incheon, Asiana Airlines, Atlas Air, Jeju Air, Korean Air, Scoot, Singapore Airlines 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 Singapore by air?
- The great-circle distance between Incheon International Airport and Singapore Changi Airport is approximately 2,875 mi.
- How long is the flight from Seoul to Singapore?
- Based on the distance, the estimated flight time is about 6h 15m. This is an estimate, not a schedule.
- Is there a direct connection from Seoul to Singapore?
- Yes, a direct connection between ICN and SIN has been observed in our route data.
- Which airlines have been observed on this route?
- In the available route data: Air Incheon, Asiana Airlines, Atlas Air, Jeju Air, Korean Air, Scoot, Singapore Airlines and T'way Air.
- How often is there a flight from Seoul to Singapore?
- On average around 9 flights a day, measured over twelve months (October 2025 to September 2026) in the flight archive, with 2,458 observed flights. Mainly Korean Air, Singapore Airlines, Jeju Air. That is an observation, not a timetable.
- What is the current time difference between Seoul and Singapore?
- Singapore is currently 1 hour behind Seoul.
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.