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(DL) Delta Air Lines 4991 On-Time Performance Rating

Date Range:

01-Sep-2026 to 31-Oct-2026

(ATL) Atlanta Hartsfield-Jackson International Airport

Atlanta, GA, US

(AEX) Alexandria International Airport

Alexandria, LA, US

On-Time Performance Chart

(using rounded numbers)
On-Time
52
85%
Late
1
2%
Very Late
2
3%
Excessive
6
10%
Cancelled
0
0%
Diverted
0
0%

Delay Statistics

(Aggregate Arrival Delay Statistics for this Flight)

Total Flights Observed
61
Total Delays ( > 1 min )
13
Codeshares
61
Average Delay (min.)
34.92307692307692
Standard Deviation
25.2
Min
0
Max
77

DL 4991 On-Time Performance Details

Overall Rating
3.3 of 5
Average
Percentage On-Time 85%
Average Delay Time 34.92307692307692 min
FlightStats Rating is a merit measurement considering both on-time performance and delay severity. The score, 3.3 shows that this flight has on-time performance characteristics better than 64% of all other flights in the FlightStats database.
On-Time Performance Rating
4.6 of 5
Very Good
Percentage On-Time 85%
This flight has an on-time performance of 85%. Statistically, when taking into consideration sample size, standard deviation, and mean, this flight is on-time more often than 92% of other flights.
Delay Performance
1.9 of 5
Average
Average Delay Time 34.92307692307692 min
This flight has an average delay of 34.92307692307692 minutes with a standard deviation of 25.2 minutes. Statistically, when taking into consideration sample size, standard deviation, and mean, this flight has delay performance characteristics better than 38% of other flights.

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