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(WN) Southwest Airlines 4576 On-Time Performance Rating

Date Range:

15-Mar-2026 to 15-May-2026

(ONT) Ontario International Airport

Ontario, CA, US

(LAS) Las Vegas Harry Reid International Airport

Las Vegas, NV, US

On-Time Performance Chart

(using rounded numbers)
On-Time
24
51%
Late
5
11%
Very Late
6
13%
Excessive
12
26%
Cancelled
0
0%
Diverted
0
0%

Delay Statistics

(Aggregate Arrival Delay Statistics for this Flight)

Total Flights Observed
47
Total Delays ( > 1 min )
28
Codeshares
0
Average Delay (min.)
50.32142857142857
Standard Deviation
41
Min
0
Max
143

WN 4576 On-Time Performance Details

Overall Rating
0.1 of 5
Very Poor
Percentage On-Time 51%
Average Delay Time 50.32142857142857 min
FlightStats Rating is a merit measurement considering both on-time performance and delay severity. The score, 0.1 shows that this flight has on-time performance characteristics better than 0% of all other flights in the FlightStats database.
On-Time Performance Rating
0.0 of 5
Very Poor
Percentage On-Time 51%
This flight has an on-time performance of 51%. Statistically, when taking into consideration sample size, standard deviation, and mean, this flight is on-time more often than 0% of other flights.
Delay Performance
0.1 of 5
Very Poor
Average Delay Time 50.32142857142857 min
This flight has an average delay of 50.32142857142857 minutes with a standard deviation of 41 minutes. Statistically, when taking into consideration sample size, standard deviation, and mean, this flight has delay performance characteristics better than 3% of other flights.

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