background

(WN) Southwest Airlines 4639 On-Time Performance Rating

Date Range:

01-Jan-2026 to 28-Feb-2026

(LAS) Las Vegas Harry Reid International Airport

Las Vegas, NV, US

(SJC) San Jose Mineta International Airport

San Jose, CA, US

On-Time Performance Chart

(using rounded numbers)
On-Time
15
75%
Late
0
0%
Very Late
0
0%
Excessive
5
25%
Cancelled
0
0%
Diverted
0
0%

Delay Statistics

(Aggregate Arrival Delay Statistics for this Flight)

Total Flights Observed
20
Total Delays ( > 1 min )
7
Codeshares
0
Average Delay (min.)
54
Standard Deviation
40.8
Min
0
Max
112

WN 4639 On-Time Performance Details

Overall Rating
1.7 of 5
Average
Percentage On-Time 75%
Average Delay Time 54 min
FlightStats Rating is a merit measurement considering both on-time performance and delay severity. The score, 1.7 shows that this flight has on-time performance characteristics better than 32% of all other flights in the FlightStats database.
On-Time Performance Rating
2.5 of 5
Average
Percentage On-Time 75%
This flight has an on-time performance of 75%. Statistically, when taking into consideration sample size, standard deviation, and mean, this flight is on-time more often than 50% of other flights.
Delay Performance
0.8 of 5
Poor
Average Delay Time 54 min
This flight has an average delay of 54 minutes with a standard deviation of 40.8 minutes. Statistically, when taking into consideration sample size, standard deviation, and mean, this flight has delay performance characteristics better than 16% of other flights.

Other Stops for WN 4639