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(AS) Alaska Airlines 4531 On-Time Performance Rating

Date Range:

01-Sep-2026 to 31-Oct-2026

(MIA) Miami International Airport

Miami, FL, US

(SJU) Luis Munoz Marin International Airport

San Juan, PR

On-Time Performance Chart

(using rounded numbers)
On-Time
18
67%
Late
3
11%
Very Late
1
4%
Excessive
5
19%
Cancelled
0
0%
Diverted
0
0%

Delay Statistics

(Aggregate Arrival Delay Statistics for this Flight)

Total Flights Observed
27
Total Delays ( > 1 min )
15
Codeshares
27
Average Delay (min.)
30.866666666666667
Standard Deviation
27.7
Min
0
Max
101

AS 4531 On-Time Performance Details

Overall Rating
1.6 of 5
Average
Percentage On-Time 67%
Average Delay Time 30.866666666666667 min
FlightStats Rating is a merit measurement considering both on-time performance and delay severity. The score, 1.6 shows that this flight has on-time performance characteristics better than 30% of all other flights in the FlightStats database.
On-Time Performance Rating
0.4 of 5
Very Poor
Percentage On-Time 67%
This flight has an on-time performance of 67%. Statistically, when taking into consideration sample size, standard deviation, and mean, this flight is on-time more often than 8% of other flights.
Delay Performance
2.7 of 5
Average
Average Delay Time 30.866666666666667 min
This flight has an average delay of 30.866666666666667 minutes with a standard deviation of 27.7 minutes. Statistically, when taking into consideration sample size, standard deviation, and mean, this flight has delay performance characteristics better than 54% of other flights.

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