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(DL) Delta Air Lines 3821 On-Time Performance Rating

Date Range:

15-Dec-2025 to 15-Feb-2026

(DTW) Detroit Metropolitan Wayne County Airport

Detroit, MI, US

(SDF) Louisville Muhammad Ali International Airport

Louisville, KY, US

On-Time Performance Chart

(using rounded numbers)
On-Time
12
67%
Late
1
6%
Very Late
0
0%
Excessive
5
28%
Cancelled
0
0%
Diverted
0
0%

Delay Statistics

(Aggregate Arrival Delay Statistics for this Flight)

Total Flights Observed
18
Total Delays ( > 1 min )
7
Codeshares
18
Average Delay (min.)
81.71428571428571
Standard Deviation
55.5
Min
0
Max
150

DL 3821 On-Time Performance Details

Overall Rating
0.5 of 5
Very Poor
Percentage On-Time 67%
Average Delay Time 81.71428571428571 min
FlightStats Rating is a merit measurement considering both on-time performance and delay severity. The score, 0.5 shows that this flight has on-time performance characteristics better than 9% of all other flights in the FlightStats database.
On-Time Performance Rating
0.9 of 5
Poor
Percentage On-Time 67%
This flight has an on-time performance of 67%. Statistically, when taking into consideration sample size, standard deviation, and mean, this flight is on-time more often than 18% of other flights.
Delay Performance
0.1 of 5
Very Poor
Average Delay Time 81.71428571428571 min
This flight has an average delay of 81.71428571428571 minutes with a standard deviation of 55.5 minutes. Statistically, when taking into consideration sample size, standard deviation, and mean, this flight has delay performance characteristics better than 1% of other flights.

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