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(SK) SAS 3985 On-Time Performance Rating

Date Range:

15-Apr-2026 to 15-Jun-2026

(LHR) London Heathrow Airport

London, EN, GB

(SEA) Seattle-Tacoma International Airport

Seattle, WA, US

On-Time Performance Chart

(using rounded numbers)
On-Time
53
87%
Late
3
5%
Very Late
3
5%
Excessive
1
2%
Cancelled
0
0%
Diverted
1
2%

Delay Statistics

(Aggregate Arrival Delay Statistics for this Flight)

Total Flights Observed
60
Total Delays ( > 1 min )
11
Codeshares
60
Average Delay (min.)
28.727272727272727
Standard Deviation
27.3
Min
0
Max
102

SK 3985 On-Time Performance Details

Overall Rating
4.0 of 5
Good
Percentage On-Time 88%
Average Delay Time 28.727272727272727 min
FlightStats Rating is a merit measurement considering both on-time performance and delay severity. The score, 4 shows that this flight has on-time performance characteristics better than 79% of all other flights in the FlightStats database.
On-Time Performance Rating
4.9 of 5
Very Good
Percentage On-Time 88%
This flight has an on-time performance of 88%. Statistically, when taking into consideration sample size, standard deviation, and mean, this flight is on-time more often than 98% of other flights.
Delay Performance
3.1 of 5
Average
Average Delay Time 28.727272727272727 min
This flight has an average delay of 28.727272727272727 minutes with a standard deviation of 27.3 minutes. Statistically, when taking into consideration sample size, standard deviation, and mean, this flight has delay performance characteristics better than 62% of other flights.