background

(SK) SAS 3597 On-Time Performance Rating

Date Range:

15-Mar-2026 to 15-May-2026

(JFK) New York John F. Kennedy International Airport

New York, NY, US

(IAD) Washington Dulles International Airport

Dulles, VA, US

On-Time Performance Chart

(using rounded numbers)
On-Time
35
69%
Late
7
14%
Very Late
3
6%
Excessive
4
8%
Cancelled
2
4%
Diverted
0
0%

Delay Statistics

(Aggregate Arrival Delay Statistics for this Flight)

Total Flights Observed
51
Total Delays ( > 1 min )
18
Codeshares
51
Average Delay (min.)
27.22222222222222
Standard Deviation
19.1
Min
0
Max
71

SK 3597 On-Time Performance Details

Overall Rating
1.7 of 5
Average
Percentage On-Time 69%
Average Delay Time 27.22222222222222 min
FlightStats Rating is a merit measurement considering both on-time performance and delay severity. The score, 1.7 shows that this flight has on-time performance characteristics better than 32% of all other flights in the FlightStats database.
On-Time Performance Rating
0.2 of 5
Very Poor
Percentage On-Time 69%
This flight has an on-time performance of 69%. Statistically, when taking into consideration sample size, standard deviation, and mean, this flight is on-time more often than 4% of other flights.
Delay Performance
3.1 of 5
Average
Average Delay Time 27.22222222222222 min
This flight has an average delay of 27.22222222222222 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 62% of other flights.