background

(WN) Southwest Airlines 4377 On-Time Performance Rating

Date Range:

01-Aug-2026 to 30-Sep-2026

(PHX) Phoenix Sky Harbor International Airport

Phoenix, AZ, US

(SMF) Sacramento International Airport

Sacramento, CA, US

On-Time Performance Chart

(using rounded numbers)
On-Time
7
88%
Late
1
13%
Very Late
0
0%
Excessive
0
0%
Cancelled
0
0%
Diverted
0
0%

Delay Statistics

(Aggregate Arrival Delay Statistics for this Flight)

Total Flights Observed
8
Total Delays ( > 1 min )
4
Codeshares
0
Average Delay (min.)
12.25
Standard Deviation
8.7
Min
0
Max
24

WN 4377 On-Time Performance Details

Overall Rating
4.0 of 5
Good
Percentage On-Time 88%
Average Delay Time 12.25 min
FlightStats Rating is a merit measurement considering both on-time performance and delay severity. The score, 4 shows that this flight has on-time performance characteristics better than 79% of all other flights in the FlightStats database.
On-Time Performance Rating
4.1 of 5
Good
Percentage On-Time 88%
This flight has an on-time performance of 88%. Statistically, when taking into consideration sample size, standard deviation, and mean, this flight is on-time more often than 82% of other flights.
Delay Performance
3.9 of 5
Good
Average Delay Time 12.25 min
This flight has an average delay of 12.25 minutes with a standard deviation of 8.7 minutes. Statistically, when taking into consideration sample size, standard deviation, and mean, this flight has delay performance characteristics better than 79% of other flights.

Other Stops for WN 4377