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(DL) Delta Air Lines 520 On-Time Performance Rating

Date Range:

15-Nov-2020 to 15-Jan-2021

(SEA) Seattle-Tacoma International Airport

Seattle, WA, US

(JFK) John F. Kennedy International Airport

New York, NY, US

On-Time Performance Chart

(using rounded numbers)
On-Time
31
78%
Late
4
10%
Very Late
2
5%
Excessive
1
3%
Cancelled
1
3%
Diverted
1
3%

Delay Statistics

(Aggregate Arrival Delay Statistics for this Flight)

Total Flights Observed
39
Total Delays ( > 1 min )
21
Codeshares
0
Average Delay (min.)
18
Standard Deviation
26.5
Min
0
Max
124

DL 520 On-Time Performance Details

Overall Rating
2.5 of 5
Average
Percentage On-Time 80%
Average Delay Time 18 min
FlightStats Rating is a merit measurement considering both on-time performance and delay severity. The score, 2.5 shows that this flight has on-time performance characteristics better than 48% of all other flights in the FlightStats database.
On-Time Performance Rating
1.1 of 5
Poor
Percentage On-Time 80%
This flight has an on-time performance of 80%. Statistically, when taking into consideration sample size, standard deviation, and mean, this flight is on-time more often than 21% of other flights.
Delay Performance
3.8 of 5
Good
Average Delay Time 18 min
This flight has an average delay of 18 minutes with a standard deviation of 26.5 minutes. Statistically, when taking into consideration sample size, standard deviation, and mean, this flight has delay performance characteristics better than 76% of other flights.