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(WN) Southwest Airlines 3966 On-Time Performance Rating

Date Range:

15-Jan-2026 to 15-Mar-2026

(SAN) San Diego International Airport

San Diego, CA, US

(PHX) Phoenix Sky Harbor International Airport

Phoenix, AZ, US

On-Time Performance Chart

(using rounded numbers)
On-Time
28
93%
Late
1
3%
Very Late
0
0%
Excessive
1
3%
Cancelled
0
0%
Diverted
0
0%

Delay Statistics

(Aggregate Arrival Delay Statistics for this Flight)

Total Flights Observed
30
Total Delays ( > 1 min )
8
Codeshares
0
Average Delay (min.)
15.875
Standard Deviation
14.4
Min
0
Max
47

WN 3966 On-Time Performance Details

Overall Rating
4.5 of 5
Good
Percentage On-Time 93%
Average Delay Time 15.875 min
FlightStats Rating is a merit measurement considering both on-time performance and delay severity. The score, 4.5 shows that this flight has on-time performance characteristics better than 89% of all other flights in the FlightStats database.
On-Time Performance Rating
4.9 of 5
Very Good
Percentage On-Time 93%
This flight has an on-time performance of 93%. Statistically, when taking into consideration sample size, standard deviation, and mean, this flight is on-time more often than 99% of other flights.
Delay Performance
4.1 of 5
Good
Average Delay Time 15.875 min
This flight has an average delay of 15.875 minutes with a standard deviation of 14.4 minutes. Statistically, when taking into consideration sample size, standard deviation, and mean, this flight has delay performance characteristics better than 82% of other flights.

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