background

(ET) Ethiopian Airlines 501 On-Time Performance Rating

Date Range:

01-Nov-2025 to 31-Dec-2025

(IAD) Washington Dulles International Airport

Dulles, VA, US

(ADD) Addis Ababa Bole International Airport

Addis Ababa, ET

On-Time Performance Chart

(using rounded numbers)
On-Time
28
47%
Late
11
18%
Very Late
8
13%
Excessive
13
22%
Cancelled
0
0%
Diverted
0
0%

Delay Statistics

(Aggregate Arrival Delay Statistics for this Flight)

Total Flights Observed
60
Total Delays ( > 1 min )
42
Codeshares
0
Average Delay (min.)
31.357142857142858
Standard Deviation
21.5
Min
0
Max
86

ET 501 On-Time Performance Details

Overall Rating
1.7 of 5
Average
Percentage On-Time 47%
Average Delay Time 31.357142857142858 min
FlightStats Rating is a merit measurement considering both on-time performance and delay severity. The score, 1.7 shows that this flight has on-time performance characteristics better than 32% of all other flights in the FlightStats database.
On-Time Performance Rating
0.0 of 5
Very Poor
Percentage On-Time 47%
This flight has an on-time performance of 47%. Statistically, when taking into consideration sample size, standard deviation, and mean, this flight is on-time more often than 0% of other flights.
Delay Performance
3.3 of 5
Average
Average Delay Time 31.357142857142858 min
This flight has an average delay of 31.357142857142858 minutes with a standard deviation of 21.5 minutes. Statistically, when taking into consideration sample size, standard deviation, and mean, this flight has delay performance characteristics better than 66% of other flights.