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(SK) SAS 3989 On-Time Performance Rating

Date Range:

01-Jul-2025 to 31-Aug-2025

(LHR) London Heathrow Airport

London, EN, GB

(BOS) Boston Logan International Airport

Boston, MA, US

On-Time Performance Chart

(using rounded numbers)
On-Time
56
90%
Late
3
5%
Very Late
1
2%
Excessive
0
0%
Cancelled
1
2%
Diverted
1
2%

Delay Statistics

(Aggregate Arrival Delay Statistics for this Flight)

Total Flights Observed
61
Total Delays ( > 1 min )
18
Codeshares
61
Average Delay (min.)
8.833333333333334
Standard Deviation
9.1
Min
0
Max
31

SK 3989 On-Time Performance Details

Overall Rating
5.0 of 5
Very Good
Percentage On-Time 92%
Average Delay Time 8.833333333333334 min
FlightStats Rating is a merit measurement considering both on-time performance and delay severity. The score, 5 shows that this flight has on-time performance characteristics better than 98% of all other flights in the FlightStats database.
On-Time Performance Rating
5.0 of 5
Very Good
Percentage On-Time 92%
This flight has an on-time performance of 92%. Statistically, when taking into consideration sample size, standard deviation, and mean, this flight is on-time more often than 100% of other flights.
Delay Performance
4.9 of 5
Very Good
Average Delay Time 8.833333333333334 min
This flight has an average delay of 8.833333333333334 minutes with a standard deviation of 9.1 minutes. Statistically, when taking into consideration sample size, standard deviation, and mean, this flight has delay performance characteristics better than 98% of other flights.