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(DL) Delta Air Lines 51 On-Time Performance Rating

Date Range:

01-Jul-2025 to 31-Aug-2025

(LHR) London Heathrow Airport

London, EN, GB

(SLC) Salt Lake City International Airport

Salt Lake City, UT, US

On-Time Performance Chart

(using rounded numbers)
On-Time
35
81%
Late
0
0%
Very Late
0
0%
Excessive
5
12%
Cancelled
3
7%
Diverted
0
0%

Delay Statistics

(Aggregate Arrival Delay Statistics for this Flight)

Total Flights Observed
43
Total Delays ( > 1 min )
9
Codeshares
0
Average Delay (min.)
65.11111111111111
Standard Deviation
64.7
Min
0
Max
165

DL 51 On-Time Performance Details

Overall Rating
2.6 of 5
Average
Percentage On-Time 81%
Average Delay Time 65.11111111111111 min
FlightStats Rating is a merit measurement considering both on-time performance and delay severity. The score, 2.6 shows that this flight has on-time performance characteristics better than 50% of all other flights in the FlightStats database.
On-Time Performance Rating
4.7 of 5
Very Good
Percentage On-Time 81%
This flight has an on-time performance of 81%. Statistically, when taking into consideration sample size, standard deviation, and mean, this flight is on-time more often than 93% of other flights.
Delay Performance
0.4 of 5
Very Poor
Average Delay Time 65.11111111111111 min
This flight has an average delay of 65.11111111111111 minutes with a standard deviation of 64.7 minutes. Statistically, when taking into consideration sample size, standard deviation, and mean, this flight has delay performance characteristics better than 8% of other flights.