
(WN) Southwest Airlines 421 On-Time Performance Rating
Date Range:
01-Mar-2026 to 30-Apr-2026
On-Time Performance Chart
(using rounded numbers)
On-Time
14
88%
Late
1
6%
Very Late
1
6%
Excessive
0
0%
Cancelled
0
0%
Diverted
0
0%
Delay Statistics
(Aggregate Arrival Delay Statistics for this Flight)
Total Flights Observed
16
Total Delays ( > 1 min )
6
Codeshares
0
Average Delay (min.)
14.333333333333334
Standard Deviation
15.4
Min
0
Max
39
WN 421 On-Time Performance Details
Other Stops for WN 421
Origin
Destination
Rating
(AUS) Austin-Bergstrom International Airport
Austin, TX, US
(PHX) Phoenix Sky Harbor International Airport
Phoenix, AZ, US
4.7 Very Good
(DEN) Denver International Airport
Denver, CO, US
(SAT) San Antonio International Airport
San Antonio, TX, US
3.3 Average
(MCI) Kansas City International Airport
Kansas City, MO, US
(AUS) Austin-Bergstrom International Airport
Austin, TX, US
3.7 Good
(SAN) San Diego International Airport
San Diego, CA, US
(DEN) Denver International Airport
Denver, CO, US
3.9 Good