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(WN) Southwest Airlines 427 On-Time Performance Rating

Date Range:

15-Mar-2026 to 15-May-2026

(SJC) San Jose Mineta International Airport

San Jose, CA, US

(DEN) Denver International Airport

Denver, CO, US

On-Time Performance Chart

(using rounded numbers)
On-Time
21
55%
Late
7
18%
Very Late
5
13%
Excessive
5
13%
Cancelled
0
0%
Diverted
0
0%

Delay Statistics

(Aggregate Arrival Delay Statistics for this Flight)

Total Flights Observed
38
Total Delays ( > 1 min )
29
Codeshares
0
Average Delay (min.)
26.96551724137931
Standard Deviation
20.9
Min
0
Max
82

WN 427 On-Time Performance Details

Overall Rating
1.7 of 5
Average
Percentage On-Time 55%
Average Delay Time 26.96551724137931 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
0.0 of 5
Very Poor
Percentage On-Time 55%
This flight has an on-time performance of 55%. Statistically, when taking into consideration sample size, standard deviation, and mean, this flight is on-time more often than 0% of other flights.
Delay Performance
3.3 of 5
Average
Average Delay Time 26.96551724137931 min
This flight has an average delay of 26.96551724137931 minutes with a standard deviation of 20.9 minutes. Statistically, when taking into consideration sample size, standard deviation, and mean, this flight has delay performance characteristics better than 66% of other flights.

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