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(DL) Delta Air Lines 571 On-Time Performance Rating

Date Range:

01-Aug-2026 to 30-Sep-2026

(BOS) Boston Logan International Airport

Boston, MA, US

(SAN) San Diego International Airport

San Diego, CA, US

On-Time Performance Chart

(using rounded numbers)
On-Time
28
47%
Late
8
14%
Very Late
7
12%
Excessive
14
24%
Cancelled
2
3%
Diverted
0
0%

Delay Statistics

(Aggregate Arrival Delay Statistics for this Flight)

Total Flights Observed
59
Total Delays ( > 1 min )
41
Codeshares
0
Average Delay (min.)
35
Standard Deviation
29.8
Min
0
Max
153

DL 571 On-Time Performance Details

Overall Rating
1.2 of 5
Poor
Percentage On-Time 48%
Average Delay Time 35 min
FlightStats Rating is a merit measurement considering both on-time performance and delay severity. The score, 1.2 shows that this flight has on-time performance characteristics better than 22% of all other flights in the FlightStats database.
On-Time Performance Rating
0.0 of 5
Very Poor
Percentage On-Time 48%
This flight has an on-time performance of 48%. Statistically, when taking into consideration sample size, standard deviation, and mean, this flight is on-time more often than 0% of other flights.
Delay Performance
2.3 of 5
Average
Average Delay Time 35 min
This flight has an average delay of 35 minutes with a standard deviation of 29.8 minutes. Statistically, when taking into consideration sample size, standard deviation, and mean, this flight has delay performance characteristics better than 46% of other flights.

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