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(AY) Finnair 4579 On-Time Performance Rating

Date Range:

15-Jun-2025 to 15-Aug-2025

(SEA) Seattle-Tacoma International Airport

Seattle, WA, US

(DTW) Detroit Metropolitan Wayne County Airport

Detroit, MI, US

On-Time Performance Chart

(using rounded numbers)
On-Time
17
57%
Late
6
20%
Very Late
4
13%
Excessive
3
10%
Cancelled
0
0%
Diverted
0
0%

Delay Statistics

(Aggregate Arrival Delay Statistics for this Flight)

Total Flights Observed
30
Total Delays ( > 1 min )
18
Codeshares
30
Average Delay (min.)
28.666666666666668
Standard Deviation
20.1
Min
0
Max
78

AY 4579 On-Time Performance Details

Overall Rating
2.0 of 5
Average
Percentage On-Time 57%
Average Delay Time 28.666666666666668 min
FlightStats Rating is a merit measurement considering both on-time performance and delay severity. The score, 2 shows that this flight has on-time performance characteristics better than 39% of all other flights in the FlightStats database.
On-Time Performance Rating
0.2 of 5
Very Poor
Percentage On-Time 57%
This flight has an on-time performance of 57%. 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
3.8 of 5
Good
Average Delay Time 28.666666666666668 min
This flight has an average delay of 28.666666666666668 minutes with a standard deviation of 20.1 minutes. Statistically, when taking into consideration sample size, standard deviation, and mean, this flight has delay performance characteristics better than 76% of other flights.