background

(DL) Delta Air Lines 321 On-Time Performance Rating

Date Range:

15-Jan-2026 to 15-Mar-2026

(BOS) Boston Logan International Airport

Boston, MA, US

(LAX) Los Angeles International Airport

Los Angeles, CA, US

On-Time Performance Chart

(using rounded numbers)
On-Time
44
71%
Late
5
8%
Very Late
4
6%
Excessive
5
8%
Cancelled
2
3%
Diverted
2
3%

Delay Statistics

(Aggregate Arrival Delay Statistics for this Flight)

Total Flights Observed
60
Total Delays ( > 1 min )
25
Codeshares
0
Average Delay (min.)
50.36
Standard Deviation
74.5
Min
0
Max
246

DL 321 On-Time Performance Details

Overall Rating
0.8 of 5
Poor
Percentage On-Time 73%
Average Delay Time 50.36 min
FlightStats Rating is a merit measurement considering both on-time performance and delay severity. The score, 0.8 shows that this flight has on-time performance characteristics better than 14% of all other flights in the FlightStats database.
On-Time Performance Rating
1.2 of 5
Poor
Percentage On-Time 73%
This flight has an on-time performance of 73%. Statistically, when taking into consideration sample size, standard deviation, and mean, this flight is on-time more often than 24% of other flights.
Delay Performance
0.3 of 5
Very Poor
Average Delay Time 50.36 min
This flight has an average delay of 50.36 minutes with a standard deviation of 74.5 minutes. Statistically, when taking into consideration sample size, standard deviation, and mean, this flight has delay performance characteristics better than 7% of other flights.