(WN) Southwest Airlines 4355 On-Time Performance Rating

Date Range:

15-Jul-2026 to 15-Sep-2026

(PHX) Phoenix Sky Harbor International Airport

Phoenix, AZ, US

(LAS) Las Vegas Harry Reid International Airport

Las Vegas, NV, US

On-Time Performance Chart

(using rounded numbers)

On-Time

65%

Late

24%

Very Late

Excessive

12%

Cancelled

Diverted

Delay Statistics

(Aggregate Arrival Delay Statistics for this Flight)

Total Flights Observed

Total Delays ( > 1 min )

Codeshares

Average Delay (min.)

Standard Deviation

41.5

Min

Max

142

WN 4355 On-Time Performance Details

Overall Rating

1.4 of 5

Poor

Percentage On-Time 65%

Average Delay Time 39 min

FlightStats Rating is a merit measurement considering both on-time performance and delay severity. The score, 1.4 shows that this flight has on-time performance characteristics better than 26% of all other flights in the FlightStats database.

On-Time Performance Rating

0.6 of 5

Poor

Percentage On-Time 65%

This flight has an on-time performance of 65%. Statistically, when taking into consideration sample size, standard deviation, and mean, this flight is on-time more often than 12% of other flights.

Delay Performance

2.1 of 5

Average

Average Delay Time 39 min

This flight has an average delay of 39 minutes with a standard deviation of 41.5 minutes. Statistically, when taking into consideration sample size, standard deviation, and mean, this flight has delay performance characteristics better than 42% of other flights.