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(AS) Alaska Airlines 4427 On-Time Performance Rating

Date Range:

15-Jun-2026 to 15-Aug-2026

(STL) St Louis Lambert International Airport

Saint Louis, MO, US

(ORD) Chicago O'Hare International Airport

Chicago, IL, US

On-Time Performance Chart

(using rounded numbers)
On-Time
35
70%
Late
6
12%
Very Late
2
4%
Excessive
5
10%
Cancelled
2
4%
Diverted
0
0%

Delay Statistics

(Aggregate Arrival Delay Statistics for this Flight)

Total Flights Observed
50
Total Delays ( > 1 min )
17
Codeshares
50
Average Delay (min.)
54.705882352941174
Standard Deviation
70.5
Min
0
Max
270

AS 4427 On-Time Performance Details

Overall Rating
1.3 of 5
Poor
Percentage On-Time 70%
Average Delay Time 54.705882352941174 min
FlightStats Rating is a merit measurement considering both on-time performance and delay severity. The score, 1.3 shows that this flight has on-time performance characteristics better than 25% of all other flights in the FlightStats database.
On-Time Performance Rating
1.9 of 5
Average
Percentage On-Time 70%
This flight has an on-time performance of 70%. Statistically, when taking into consideration sample size, standard deviation, and mean, this flight is on-time more often than 38% of other flights.
Delay Performance
0.7 of 5
Poor
Average Delay Time 54.705882352941174 min
This flight has an average delay of 54.705882352941174 minutes with a standard deviation of 70.5 minutes. Statistically, when taking into consideration sample size, standard deviation, and mean, this flight has delay performance characteristics better than 14% of other flights.

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