background

(AY) Finnair 5439 On-Time Performance Rating

Date Range:

15-Mar-2026 to 15-May-2026

(LHR) London Heathrow Airport

London, EN, GB

(BOS) Boston Logan International Airport

Boston, MA, US

On-Time Performance Chart

(using rounded numbers)
On-Time
28
72%
Late
4
10%
Very Late
2
5%
Excessive
5
13%
Cancelled
0
0%
Diverted
0
0%

Delay Statistics

(Aggregate Arrival Delay Statistics for this Flight)

Total Flights Observed
39
Total Delays ( > 1 min )
22
Codeshares
39
Average Delay (min.)
31.272727272727273
Standard Deviation
38.3
Min
0
Max
146

AY 5439 On-Time Performance Details

Overall Rating
1.5 of 5
Poor
Percentage On-Time 72%
Average Delay Time 31.272727272727273 min
FlightStats Rating is a merit measurement considering both on-time performance and delay severity. The score, 1.5 shows that this flight has on-time performance characteristics better than 29% of all other flights in the FlightStats database.
On-Time Performance Rating
0.7 of 5
Poor
Percentage On-Time 72%
This flight has an on-time performance of 72%. Statistically, when taking into consideration sample size, standard deviation, and mean, this flight is on-time more often than 14% of other flights.
Delay Performance
2.3 of 5
Average
Average Delay Time 31.272727272727273 min
This flight has an average delay of 31.272727272727273 minutes with a standard deviation of 38.3 minutes. Statistically, when taking into consideration sample size, standard deviation, and mean, this flight has delay performance characteristics better than 46% of other flights.