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(KL) KLM 4239 On-Time Performance Rating

Date Range:

01-Oct-2025 to 30-Nov-2025

(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
43
75%
Late
2
4%
Very Late
2
4%
Excessive
5
9%
Cancelled
4
7%
Diverted
1
2%

Delay Statistics

(Aggregate Arrival Delay Statistics for this Flight)

Total Flights Observed
57
Total Delays ( > 1 min )
14
Codeshares
57
Average Delay (min.)
37.714285714285715
Standard Deviation
33
Min
0
Max
107

KL 4239 On-Time Performance Details

Overall Rating
1.6 of 5
Average
Percentage On-Time 75%
Average Delay Time 37.714285714285715 min
FlightStats Rating is a merit measurement considering both on-time performance and delay severity. The score, 1.6 shows that this flight has on-time performance characteristics better than 31% of all other flights in the FlightStats database.
On-Time Performance Rating
1.7 of 5
Average
Percentage On-Time 75%
This flight has an on-time performance of 75%. Statistically, when taking into consideration sample size, standard deviation, and mean, this flight is on-time more often than 34% of other flights.
Delay Performance
1.5 of 5
Poor
Average Delay Time 37.714285714285715 min
This flight has an average delay of 37.714285714285715 minutes with a standard deviation of 33 minutes. Statistically, when taking into consideration sample size, standard deviation, and mean, this flight has delay performance characteristics better than 31% of other flights.