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(DL) Delta Air Lines 1721 On-Time Performance Rating

Date Range:

01-Nov-2025 to 31-Dec-2025

(SJU) Luis Munoz Marin International Airport

San Juan, PR

(BOS) Boston Logan International Airport

Boston, MA, US

On-Time Performance Chart

(using rounded numbers)
On-Time
9
56%
Late
2
13%
Very Late
2
13%
Excessive
2
13%
Cancelled
1
6%
Diverted
0
0%

Delay Statistics

(Aggregate Arrival Delay Statistics for this Flight)

Total Flights Observed
16
Total Delays ( > 1 min )
7
Codeshares
0
Average Delay (min.)
34.142857142857146
Standard Deviation
22.5
Min
0
Max
74

DL 1721 On-Time Performance Details

Overall Rating
1.5 of 5
Poor
Percentage On-Time 56%
Average Delay Time 34.142857142857146 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 29% of all other flights in the FlightStats database.
On-Time Performance Rating
0.3 of 5
Very Poor
Percentage On-Time 56%
This flight has an on-time performance of 56%. Statistically, when taking into consideration sample size, standard deviation, and mean, this flight is on-time more often than 5% of other flights.
Delay Performance
2.7 of 5
Average
Average Delay Time 34.142857142857146 min
This flight has an average delay of 34.142857142857146 minutes with a standard deviation of 22.5 minutes. Statistically, when taking into consideration sample size, standard deviation, and mean, this flight has delay performance characteristics better than 54% of other flights.

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