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(DL) Delta Air Lines 31 On-Time Performance Rating

Date Range:

01-Jul-2026 to 31-Aug-2026

(LHR) London Heathrow Airport

London, EN, GB

(ATL) Atlanta Hartsfield-Jackson International Airport

Atlanta, GA, US

On-Time Performance Chart

(using rounded numbers)
On-Time
52
85%
Late
4
7%
Very Late
0
0%
Excessive
4
7%
Cancelled
1
2%
Diverted
0
0%

Delay Statistics

(Aggregate Arrival Delay Statistics for this Flight)

Total Flights Observed
61
Total Delays ( > 1 min )
13
Codeshares
0
Average Delay (min.)
43.53846153846154
Standard Deviation
62
Min
0
Max
222

DL 31 On-Time Performance Details

Overall Rating
3.4 of 5
Average
Percentage On-Time 85%
Average Delay Time 43.53846153846154 min
FlightStats Rating is a merit measurement considering both on-time performance and delay severity. The score, 3.4 shows that this flight has on-time performance characteristics better than 66% of all other flights in the FlightStats database.
On-Time Performance Rating
5.0 of 5
Very Good
Percentage On-Time 85%
This flight has an on-time performance of 85%. Statistically, when taking into consideration sample size, standard deviation, and mean, this flight is on-time more often than 99% of other flights.
Delay Performance
1.7 of 5
Average
Average Delay Time 43.53846153846154 min
This flight has an average delay of 43.53846153846154 minutes with a standard deviation of 62 minutes. Statistically, when taking into consideration sample size, standard deviation, and mean, this flight has delay performance characteristics better than 34% of other flights.