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(KL) KLM 4239 On-Time Performance Rating

Date Range:

15-Dec-2025 to 15-Feb-2026

(DAR) Dar es Salaam Julius Nyerere International Airport

Dar Es Salaam, TZ

(NBO) Nairobi Jomo Kenyatta International Airport

Nairobi, KE

On-Time Performance Chart

(using rounded numbers)
On-Time
32
67%
Late
3
6%
Very Late
1
2%
Excessive
4
8%
Cancelled
8
17%
Diverted
0
0%

Delay Statistics

(Aggregate Arrival Delay Statistics for this Flight)

Total Flights Observed
48
Total Delays ( > 1 min )
14
Codeshares
48
Average Delay (min.)
66.85714285714286
Standard Deviation
110
Min
0
Max
369

KL 4239 On-Time Performance Details

Overall Rating
0.3 of 5
Very Poor
Percentage On-Time 67%
Average Delay Time 66.85714285714286 min
FlightStats Rating is a merit measurement considering both on-time performance and delay severity. The score, 0.3 shows that this flight has on-time performance characteristics better than 4% of all other flights in the FlightStats database.
On-Time Performance Rating
0.4 of 5
Very Poor
Percentage On-Time 67%
This flight has an on-time performance of 67%. Statistically, when taking into consideration sample size, standard deviation, and mean, this flight is on-time more often than 8% of other flights.
Delay Performance
0.1 of 5
Very Poor
Average Delay Time 66.85714285714286 min
This flight has an average delay of 66.85714285714286 minutes with a standard deviation of 110 minutes. Statistically, when taking into consideration sample size, standard deviation, and mean, this flight has delay performance characteristics better than 1% of other flights.