background

(DL) Delta Air Lines 5983 On-Time Performance Rating

Date Range:

15-Nov-2025 to 15-Jan-2026

(LHR) London Heathrow Airport

London, EN, GB

(IAD) Washington Dulles International Airport

Dulles, VA, US

On-Time Performance Chart

(using rounded numbers)
On-Time
38
70%
Late
5
9%
Very Late
5
9%
Excessive
3
6%
Cancelled
3
6%
Diverted
0
0%

Delay Statistics

(Aggregate Arrival Delay Statistics for this Flight)

Total Flights Observed
54
Total Delays ( > 1 min )
18
Codeshares
54
Average Delay (min.)
26.5
Standard Deviation
19.1
Min
0
Max
74

DL 5983 On-Time Performance Details

Overall Rating
2.7 of 5
Average
Percentage On-Time 70%
Average Delay Time 26.5 min
FlightStats Rating is a merit measurement considering both on-time performance and delay severity. The score, 2.7 shows that this flight has on-time performance characteristics better than 52% of all other flights in the FlightStats database.
On-Time Performance Rating
1.5 of 5
Poor
Percentage On-Time 70%
This flight has an on-time performance of 70%. Statistically, when taking into consideration sample size, standard deviation, and mean, this flight is on-time more often than 31% of other flights.
Delay Performance
3.8 of 5
Good
Average Delay Time 26.5 min
This flight has an average delay of 26.5 minutes with a standard deviation of 19.1 minutes. Statistically, when taking into consideration sample size, standard deviation, and mean, this flight has delay performance characteristics better than 76% of other flights.