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(AY) Finnair 4139 On-Time Performance Rating

Date Range:

15-Apr-2026 to 15-Jun-2026

(DTW) Detroit Metropolitan Wayne County Airport

Detroit, MI, US

(ORD) Chicago O'Hare International Airport

Chicago, IL, US

On-Time Performance Chart

(using rounded numbers)
On-Time
16
80%
Late
0
0%
Very Late
1
5%
Excessive
1
5%
Cancelled
1
5%
Diverted
1
5%

Delay Statistics

(Aggregate Arrival Delay Statistics for this Flight)

Total Flights Observed
19
Total Delays ( > 1 min )
3
Codeshares
19
Average Delay (min.)
50.333333333333336
Standard Deviation
49.9
Min
0
Max
107

AY 4139 On-Time Performance Details

Overall Rating
2.7 of 5
Average
Percentage On-Time 84%
Average Delay Time 50.333333333333336 min
FlightStats Rating is a merit measurement considering both on-time performance and delay severity. The score, 2.7 shows that this flight has on-time performance characteristics better than 53% of all other flights in the FlightStats database.
On-Time Performance Rating
3.9 of 5
Good
Percentage On-Time 84%
This flight has an on-time performance of 84%. Statistically, when taking into consideration sample size, standard deviation, and mean, this flight is on-time more often than 79% of other flights.
Delay Performance
1.5 of 5
Poor
Average Delay Time 50.333333333333336 min
This flight has an average delay of 50.333333333333336 minutes with a standard deviation of 49.9 minutes. Statistically, when taking into consideration sample size, standard deviation, and mean, this flight has delay performance characteristics better than 31% of other flights.

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