KLM
Is KL4256 delayed?
Service date: · Actual departure date; scheduled departure unavailable (UTC)
Arrived
1 min late
Official source · Updated
Departure
Chitose / Tomakomai
CTS
Actual
Sep 18
Arrival
Seoul
ICN
Actual
Scheduled 19:30
Sep 18
Times shown in airport local time
Flight details
Departure · UTC
- Scheduled
- Not available
- Estimated
- Not available
- Actual
Arrival · UTC
- Scheduled
- Estimated
- Actual
Operating flight: KAL770
CTSICN
Recent arrivals
Dates below are arrival dates in the destination airport’s time zone. The detailed history uses service dates.
- 1 min late
CTS → ICN
- 21 min early
CTS → ICN
- 15 min early
CTS → ICN
- 16 min early
CTS → ICN
- 28 min early
CTS → ICN
Flight history and details
Aug 19, 2026 — Sep 18, 2026
- Observed arrivals
- 10
- Arrivals over 15 minutes late
- 0
- Observed cancellations
- 0
- Observed occurrences
- 10
Results compare scheduled and actual arrival times. Cancelled or diverted flights are excluded. Some flights may be missing from the history.
| Service date | Departure | Arrival | Actual | Arrival delay (minutes) |
|---|---|---|---|---|
| Sep 18, 2026Arrived | Chitose / Tomakomai | Seoul | 1 | |
| Sep 17, 2026Arrived | Chitose / Tomakomai | Seoul | -21 | |
| Sep 15, 2026Arrived | Chitose / Tomakomai | Seoul | -15 | |
| Sep 14, 2026Arrived | Chitose / Tomakomai | Seoul | -16 | |
| Sep 13, 2026Arrived | Chitose / Tomakomai | Seoul | -28 | |
| Sep 11, 2026Arrived | Chitose / Tomakomai | Seoul | -7 | |
| Sep 10, 2026Arrived | Chitose / Tomakomai | Seoul | -14 | |
| Sep 9, 2026Arrived | Chitose / Tomakomai | Seoul | -1 | |
| Sep 7, 2026Arrived | Chitose / Tomakomai | Seoul | -25 | |
| Sep 4, 2026Arrived | Chitose / Tomakomai | Seoul | -11 |