background

(DL) Delta Air Lines 3949 On-Time Performance Rating

Date Range:

15-Nov-2025 to 15-Jan-2026

(DTW) Detroit Metropolitan Wayne County Airport

Detroit, MI, US

(IAD) Washington Dulles International Airport

Dulles, VA, US

On-Time Performance Chart

(using rounded numbers)
On-Time
6
60%
Late
1
10%
Very Late
1
10%
Excessive
2
20%
Cancelled
0
0%
Diverted
0
0%

Delay Statistics

(Aggregate Arrival Delay Statistics for this Flight)

Total Flights Observed
10
Total Delays ( > 1 min )
5
Codeshares
10
Average Delay (min.)
62
Standard Deviation
58.8
Min
0
Max
128

DL 3949 On-Time Performance Details

Overall Rating
0.8 of 5
Poor
Percentage On-Time 60%
Average Delay Time 62 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 15% of all other flights in the FlightStats database.
On-Time Performance Rating
0.8 of 5
Poor
Percentage On-Time 60%
This flight has an on-time performance of 60%. Statistically, when taking into consideration sample size, standard deviation, and mean, this flight is on-time more often than 16% of other flights.
Delay Performance
0.8 of 5
Poor
Average Delay Time 62 min
This flight has an average delay of 62 minutes with a standard deviation of 58.8 minutes. Statistically, when taking into consideration sample size, standard deviation, and mean, this flight has delay performance characteristics better than 16% of other flights.

Other Stops for DL 3949