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(DL) Delta Air Lines 4139 On-Time Performance Rating

Date Range:

15-Feb-2026 to 15-Apr-2026

(MOB) Mobile Regional Airport

Mobile, AL, US

(ATL) Atlanta Hartsfield-Jackson International Airport

Atlanta, GA, US

On-Time Performance Chart

(using rounded numbers)
On-Time
14
78%
Late
1
6%
Very Late
0
0%
Excessive
3
17%
Cancelled
0
0%
Diverted
0
0%

Delay Statistics

(Aggregate Arrival Delay Statistics for this Flight)

Total Flights Observed
18
Total Delays ( > 1 min )
9
Codeshares
18
Average Delay (min.)
55.77777777777778
Standard Deviation
101.1
Min
0
Max
316

DL 4139 On-Time Performance Details

Overall Rating
1.7 of 5
Average
Percentage On-Time 78%
Average Delay Time 55.77777777777778 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
2.7 of 5
Average
Percentage On-Time 78%
This flight has an on-time performance of 78%. Statistically, when taking into consideration sample size, standard deviation, and mean, this flight is on-time more often than 54% of other flights.
Delay Performance
0.6 of 5
Poor
Average Delay Time 55.77777777777778 min
This flight has an average delay of 55.77777777777778 minutes with a standard deviation of 101.1 minutes. Statistically, when taking into consideration sample size, standard deviation, and mean, this flight has delay performance characteristics better than 12% of other flights.

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