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

Date Range:

15-May-2026 to 15-Jul-2026

(MIA) Miami International Airport

Miami, FL, US

(BOS) Boston Logan International Airport

Boston, MA, US

On-Time Performance Chart

(using rounded numbers)
On-Time
47
77%
Late
2
3%
Very Late
2
3%
Excessive
10
16%
Cancelled
0
0%
Diverted
0
0%

Delay Statistics

(Aggregate Arrival Delay Statistics for this Flight)

Total Flights Observed
61
Total Delays ( > 1 min )
17
Codeshares
0
Average Delay (min.)
86.41176470588235
Standard Deviation
97.7
Min
0
Max
395

DL 1399 On-Time Performance Details

Overall Rating
1.7 of 5
Average
Percentage On-Time 77%
Average Delay Time 86.41176470588235 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
3.3 of 5
Average
Percentage On-Time 77%
This flight has an on-time performance of 77%. Statistically, when taking into consideration sample size, standard deviation, and mean, this flight is on-time more often than 66% of other flights.
Delay Performance
0.0 of 5
Very Poor
Average Delay Time 86.41176470588235 min
This flight has an average delay of 86.41176470588235 minutes with a standard deviation of 97.7 minutes. Statistically, when taking into consideration sample size, standard deviation, and mean, this flight has delay performance characteristics better than 0% of other flights.

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