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(KL) KLM 4634 On-Time Performance Rating

Date Range:

01-Sep-2026 to 31-Oct-2026

(JNB) Johannesburg O.R. Tambo International Airport

Johannesburg, ZA

(PZB) Pietermaritzburg Airport

Pietermaritzburg, ZA

On-Time Performance Chart

(using rounded numbers)
On-Time
43
93%
Late
1
2%
Very Late
1
2%
Excessive
1
2%
Cancelled
0
0%
Diverted
0
0%

Delay Statistics

(Aggregate Arrival Delay Statistics for this Flight)

Total Flights Observed
46
Total Delays ( > 1 min )
15
Codeshares
46
Average Delay (min.)
13.533333333333333
Standard Deviation
20.3
Min
0
Max
80

KL 4634 On-Time Performance Details

Overall Rating
4.8 of 5
Very Good
Percentage On-Time 94%
Average Delay Time 13.533333333333333 min
FlightStats Rating is a merit measurement considering both on-time performance and delay severity. The score, 4.8 shows that this flight has on-time performance characteristics better than 94% of all other flights in the FlightStats database.
On-Time Performance Rating
5.0 of 5
Very Good
Percentage On-Time 94%
This flight has an on-time performance of 94%. Statistically, when taking into consideration sample size, standard deviation, and mean, this flight is on-time more often than 100% of other flights.
Delay Performance
4.5 of 5
Good
Average Delay Time 13.533333333333333 min
This flight has an average delay of 13.533333333333333 minutes with a standard deviation of 20.3 minutes. Statistically, when taking into consideration sample size, standard deviation, and mean, this flight has delay performance characteristics better than 90% of other flights.

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