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

Date Range:

01-Jul-2025 to 31-Aug-2025

(BOS) Boston Logan International Airport

Boston, MA, US

(MIA) Miami International Airport

Miami, FL, US

On-Time Performance Chart

(using rounded numbers)
On-Time
55
90%
Late
2
3%
Very Late
1
2%
Excessive
1
2%
Cancelled
2
3%
Diverted
0
0%

Delay Statistics

(Aggregate Arrival Delay Statistics for this Flight)

Total Flights Observed
61
Total Delays ( > 1 min )
15
Codeshares
0
Average Delay (min.)
13.866666666666667
Standard Deviation
18.6
Min
0
Max
75

DL 1399 On-Time Performance Details

Overall Rating
4.9 of 5
Very Good
Percentage On-Time 90%
Average Delay Time 13.866666666666667 min
FlightStats Rating is a merit measurement considering both on-time performance and delay severity. The score, 4.9 shows that this flight has on-time performance characteristics better than 96% of all other flights in the FlightStats database.
On-Time Performance Rating
5.0 of 5
Very Good
Percentage On-Time 90%
This flight has an on-time performance of 90%. Statistically, when taking into consideration sample size, standard deviation, and mean, this flight is on-time more often than 100% of other flights.
Delay Performance
4.7 of 5
Very Good
Average Delay Time 13.866666666666667 min
This flight has an average delay of 13.866666666666667 minutes with a standard deviation of 18.6 minutes. Statistically, when taking into consideration sample size, standard deviation, and mean, this flight has delay performance characteristics better than 93% of other flights.

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