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(DL) Delta Air Lines 939 On-time Performance Rating

Date Range:

15-May-2018 to 15-Jul-2018

(DCA) Ronald Reagan National AirportWashington, DC, US
(SLC) Salt Lake City International AirportSalt Lake City, UT, US
On-Time Performance Chart
(using rounded numbers)
On-Time
52
84%
Late
5
8%
Very Late
2
3%
Excessive
3
5%
Cancelled
0
0%
Diverted
0
0%

Delay Statistics

(Aggregate Arrival Delay Statistics for this Flight)

Total Flights Observed
62
Total Delays ( > 1 min )
13
Codeshares
0
Average Delay (min.)
33
Standard Deviation
28.5
Min
5
Max
91
DL 939 On-time Performance Details
Overall Rating
3.5 of 5
Average
Percentage On-Time 84%
Average Delay Time 33 min
FlightStats Rating is a merit measurement considering both on-time performance and delay severity. The score, 3.5 shows that this flight has on-time performance characteristics better than 69% of all other flights in the FlightStats database.
On-time Performance Rating
4.9 of 5
Very Good
Percentage On-Time 84%
This flight has an on-time performance of 84%. Statistically, when taking into consideration sample size, standard deviation, and mean, this flight is on-time more often than 97% of other flights.
Delay Performance
2.1 of 5
Average
Average Delay Time 33 min
This flight has an average delay of 33 minutes with a standard deviation of 28.5 minutes. Statistically, when taking into consideration sample size, standard deviation, and mean, this flight has delay performance characteristics better than 42% of other flights.