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(AS) Alaska Airlines 4521 On-Time Performance Rating

Date Range:

01-Mar-2026 to 30-Apr-2026

(MIA) Miami International Airport

Miami, FL, US

(DFW) Dallas Fort Worth International Airport

Dallas, TX, US

On-Time Performance Chart

(using rounded numbers)
On-Time
21
81%
Late
3
12%
Very Late
1
4%
Excessive
0
0%
Cancelled
0
0%
Diverted
1
4%

Delay Statistics

(Aggregate Arrival Delay Statistics for this Flight)

Total Flights Observed
25
Total Delays ( > 1 min )
7
Codeshares
25
Average Delay (min.)
15.714285714285714
Standard Deviation
13.3
Min
0
Max
38

AS 4521 On-Time Performance Details

Overall Rating
3.9 of 5
Good
Percentage On-Time 84%
Average Delay Time 15.714285714285714 min
FlightStats Rating is a merit measurement considering both on-time performance and delay severity. The score, 3.9 shows that this flight has on-time performance characteristics better than 77% 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
3.9 of 5
Good
Average Delay Time 15.714285714285714 min
This flight has an average delay of 15.714285714285714 minutes with a standard deviation of 13.3 minutes. Statistically, when taking into consideration sample size, standard deviation, and mean, this flight has delay performance characteristics better than 79% of other flights.

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