background

(WN) Southwest Airlines 4253 On-Time Performance Rating

Date Range:

15-Feb-2026 to 15-Apr-2026

(SJC) San Jose Mineta International Airport

San Jose, CA, US

(ONT) Ontario International Airport

Ontario, CA, US

On-Time Performance Chart

(using rounded numbers)
On-Time
8
89%
Late
0
0%
Very Late
1
11%
Excessive
0
0%
Cancelled
0
0%
Diverted
0
0%

Delay Statistics

(Aggregate Arrival Delay Statistics for this Flight)

Total Flights Observed
9
Total Delays ( > 1 min )
1
Codeshares
0
Average Delay (min.)
33
Standard Deviation
0
Min
0
Max
33

WN 4253 On-Time Performance Details

Overall Rating
3.2 of 5
Average
Percentage On-Time 89%
Average Delay Time 33 min
FlightStats Rating is a merit measurement considering both on-time performance and delay severity. The score, 3.2 shows that this flight has on-time performance characteristics better than 63% of all other flights in the FlightStats database.
On-Time Performance Rating
4.1 of 5
Good
Percentage On-Time 89%
This flight has an on-time performance of 89%. 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
2.3 of 5
Average
Average Delay Time 33 min
This flight has an average delay of 33 minutes with a standard deviation of 0 minutes. Statistically, when taking into consideration sample size, standard deviation, and mean, this flight has delay performance characteristics better than 46% of other flights.

Other Stops for WN 4253