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(DL) Delta Air Lines 1851 On-Time Performance Rating

Date Range:

15-Dec-2025 to 15-Feb-2026

(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
53%
Late
2
12%
Very Late
1
6%
Excessive
3
18%
Cancelled
2
12%
Diverted
0
0%

Delay Statistics

(Aggregate Arrival Delay Statistics for this Flight)

Total Flights Observed
17
Total Delays ( > 1 min )
7
Codeshares
0
Average Delay (min.)
194.28571428571428
Standard Deviation
340.1
Min
0
Max
948

DL 1851 On-Time Performance Details

Overall Rating
0.1 of 5
Very Poor
Percentage On-Time 53%
Average Delay Time 194.28571428571428 min
FlightStats Rating is a merit measurement considering both on-time performance and delay severity. The score, 0.1 shows that this flight has on-time performance characteristics better than 0% of all other flights in the FlightStats database.
On-Time Performance Rating
0.1 of 5
Very Poor
Percentage On-Time 53%
This flight has an on-time performance of 53%. Statistically, when taking into consideration sample size, standard deviation, and mean, this flight is on-time more often than 2% of other flights.
Delay Performance
0.0 of 5
Very Poor
Average Delay Time 194.28571428571428 min
This flight has an average delay of 194.28571428571428 minutes with a standard deviation of 340.1 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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