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(WN) Southwest Airlines 528 On-Time Performance Rating

Date Range:

15-Aug-2026 to 15-Oct-2026

(ONT) Ontario International Airport

Ontario, CA, US

(PHX) Phoenix Sky Harbor International Airport

Phoenix, AZ, US

On-Time Performance Chart

(using rounded numbers)
On-Time
1
50%
Late
0
0%
Very Late
0
0%
Excessive
1
50%
Cancelled
0
0%
Diverted
0
0%

Delay Statistics

(Aggregate Arrival Delay Statistics for this Flight)

Total Flights Observed
2
Total Delays ( > 1 min )
2
Codeshares
0
Average Delay (min.)
68
Standard Deviation
82
Min
10
Max
126

WN 528 On-Time Performance Details

Overall Rating
0.9 of 5
Poor
Percentage On-Time 50%
Average Delay Time 68 min
FlightStats Rating is a merit measurement considering both on-time performance and delay severity. The score, 0.9 shows that this flight has on-time performance characteristics better than 17% of all other flights in the FlightStats database.
On-Time Performance Rating
0.9 of 5
Poor
Percentage On-Time 50%
This flight has an on-time performance of 50%. Statistically, when taking into consideration sample size, standard deviation, and mean, this flight is on-time more often than 18% of other flights.
Delay Performance
0.9 of 5
Poor
Average Delay Time 68 min
This flight has an average delay of 68 minutes with a standard deviation of 82 minutes. Statistically, when taking into consideration sample size, standard deviation, and mean, this flight has delay performance characteristics better than 18% of other flights.

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