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(WN) Southwest Airlines 4639 On-Time Performance Rating

Date Range:

15-Feb-2026 to 15-Apr-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
7
64%
Late
0
0%
Very Late
0
0%
Excessive
4
36%
Cancelled
0
0%
Diverted
0
0%

Delay Statistics

(Aggregate Arrival Delay Statistics for this Flight)

Total Flights Observed
11
Total Delays ( > 1 min )
7
Codeshares
0
Average Delay (min.)
39.57142857142857
Standard Deviation
34.2
Min
0
Max
86

WN 4639 On-Time Performance Details

Overall Rating
1.3 of 5
Poor
Percentage On-Time 64%
Average Delay Time 39.57142857142857 min
FlightStats Rating is a merit measurement considering both on-time performance and delay severity. The score, 1.3 shows that this flight has on-time performance characteristics better than 25% of all other flights in the FlightStats database.
On-Time Performance Rating
0.7 of 5
Poor
Percentage On-Time 64%
This flight has an on-time performance of 64%. Statistically, when taking into consideration sample size, standard deviation, and mean, this flight is on-time more often than 14% of other flights.
Delay Performance
1.9 of 5
Average
Average Delay Time 39.57142857142857 min
This flight has an average delay of 39.57142857142857 minutes with a standard deviation of 34.2 minutes. Statistically, when taking into consideration sample size, standard deviation, and mean, this flight has delay performance characteristics better than 38% of other flights.

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