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(DL) Delta Air Lines 1399 On-Time Performance Rating

Date Range:

01-Dec-2025 to 31-Jan-2026

(BOS) Boston Logan International Airport

Boston, MA, US

(MIA) Miami International Airport

Miami, FL, US

On-Time Performance Chart

(using rounded numbers)
On-Time
32
70%
Late
7
15%
Very Late
1
2%
Excessive
3
7%
Cancelled
2
4%
Diverted
1
2%

Delay Statistics

(Aggregate Arrival Delay Statistics for this Flight)

Total Flights Observed
45
Total Delays ( > 1 min )
19
Codeshares
0
Average Delay (min.)
44.73684210526316
Standard Deviation
90.5
Min
0
Max
384

DL 1399 On-Time Performance Details

Overall Rating
1.5 of 5
Poor
Percentage On-Time 71%
Average Delay Time 44.73684210526316 min
FlightStats Rating is a merit measurement considering both on-time performance and delay severity. The score, 1.5 shows that this flight has on-time performance characteristics better than 28% of all other flights in the FlightStats database.
On-Time Performance Rating
1.7 of 5
Average
Percentage On-Time 71%
This flight has an on-time performance of 71%. Statistically, when taking into consideration sample size, standard deviation, and mean, this flight is on-time more often than 34% of other flights.
Delay Performance
1.2 of 5
Poor
Average Delay Time 44.73684210526316 min
This flight has an average delay of 44.73684210526316 minutes with a standard deviation of 90.5 minutes. Statistically, when taking into consideration sample size, standard deviation, and mean, this flight has delay performance characteristics better than 24% of other flights.

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