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(ET) Ethiopian Airlines 4257 On-Time Performance Rating

Date Range:

01-Aug-2026 to 30-Sep-2026

(CMB) Colombo Bandaranaike International Airport

Colombo, LK

(DAC) Dhaka Hazrat Shahjalal International Airport

Dhaka, BD

On-Time Performance Chart

(using rounded numbers)
On-Time
35
70%
Late
7
14%
Very Late
1
2%
Excessive
7
14%
Cancelled
0
0%
Diverted
0
0%

Delay Statistics

(Aggregate Arrival Delay Statistics for this Flight)

Total Flights Observed
50
Total Delays ( > 1 min )
30
Codeshares
50
Average Delay (min.)
36.766666666666666
Standard Deviation
52.1
Min
0
Max
245

ET 4257 On-Time Performance Details

Overall Rating
1.1 of 5
Poor
Percentage On-Time 70%
Average Delay Time 36.766666666666666 min
FlightStats Rating is a merit measurement considering both on-time performance and delay severity. The score, 1.1 shows that this flight has on-time performance characteristics better than 20% of all other flights in the FlightStats database.
On-Time Performance Rating
0.6 of 5
Poor
Percentage On-Time 70%
This flight has an on-time performance of 70%. Statistically, when taking into consideration sample size, standard deviation, and mean, this flight is on-time more often than 12% of other flights.
Delay Performance
1.5 of 5
Poor
Average Delay Time 36.766666666666666 min
This flight has an average delay of 36.766666666666666 minutes with a standard deviation of 52.1 minutes. Statistically, when taking into consideration sample size, standard deviation, and mean, this flight has delay performance characteristics better than 31% of other flights.