background

(PW) Precision Air 4491 On-Time Performance Rating

Date Range:

01-Jan-2026 to 28-Feb-2026

(ZNZ) Abeid Amani Karume International Airport

Zanzibar, TZ

(NBO) Nairobi Jomo Kenyatta International Airport

Nairobi, KE

On-Time Performance Chart

(using rounded numbers)
On-Time
27
66%
Late
2
5%
Very Late
2
5%
Excessive
6
15%
Cancelled
4
10%
Diverted
0
0%

Delay Statistics

(Aggregate Arrival Delay Statistics for this Flight)

Total Flights Observed
41
Total Delays ( > 1 min )
11
Codeshares
41
Average Delay (min.)
135.54545454545453
Standard Deviation
150.4
Min
0
Max
500

PW 4491 On-Time Performance Details

Overall Rating
0.2 of 5
Very Poor
Percentage On-Time 66%
Average Delay Time 135.54545454545453 min
FlightStats Rating is a merit measurement considering both on-time performance and delay severity. The score, 0.2 shows that this flight has on-time performance characteristics better than 2% of all other flights in the FlightStats database.
On-Time Performance Rating
0.3 of 5
Very Poor
Percentage On-Time 66%
This flight has an on-time performance of 66%. Statistically, when taking into consideration sample size, standard deviation, and mean, this flight is on-time more often than 7% of other flights.
Delay Performance
0.0 of 5
Very Poor
Average Delay Time 135.54545454545453 min
This flight has an average delay of 135.54545454545453 minutes with a standard deviation of 150.4 minutes. Statistically, when taking into consideration sample size, standard deviation, and mean, this flight has delay performance characteristics better than 0% of other flights.