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(WN) Southwest Airlines 4528 On-Time Performance Rating

Date Range:

15-Jul-2026 to 15-Sep-2026

(LAS) Las Vegas Harry Reid International Airport

Las Vegas, NV, US

(STL) St Louis Lambert International Airport

Saint Louis, MO, US

On-Time Performance Chart

(using rounded numbers)
On-Time
20
63%
Late
2
6%
Very Late
3
9%
Excessive
6
19%
Cancelled
1
3%
Diverted
0
0%

Delay Statistics

(Aggregate Arrival Delay Statistics for this Flight)

Total Flights Observed
32
Total Delays ( > 1 min )
16
Codeshares
0
Average Delay (min.)
55.75
Standard Deviation
63.7
Min
0
Max
228

WN 4528 On-Time Performance Details

Overall Rating
0.3 of 5
Very Poor
Percentage On-Time 63%
Average Delay Time 55.75 min
FlightStats Rating is a merit measurement considering both on-time performance and delay severity. The score, 0.3 shows that this flight has on-time performance characteristics better than 4% of all other flights in the FlightStats database.
On-Time Performance Rating
0.2 of 5
Very Poor
Percentage On-Time 63%
This flight has an on-time performance of 63%. Statistically, when taking into consideration sample size, standard deviation, and mean, this flight is on-time more often than 4% of other flights.
Delay Performance
0.3 of 5
Very Poor
Average Delay Time 55.75 min
This flight has an average delay of 55.75 minutes with a standard deviation of 63.7 minutes. Statistically, when taking into consideration sample size, standard deviation, and mean, this flight has delay performance characteristics better than 7% of other flights.

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