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(WN) Southwest Airlines 397 On-Time Performance Rating

Date Range:

15-Jan-2026 to 15-Mar-2026

(PHX) Phoenix Sky Harbor International Airport

Phoenix, AZ, US

(SLC) Salt Lake City International Airport

Salt Lake City, UT, US

On-Time Performance Chart

(using rounded numbers)
On-Time
3
43%
Late
1
14%
Very Late
1
14%
Excessive
2
29%
Cancelled
0
0%
Diverted
0
0%

Delay Statistics

(Aggregate Arrival Delay Statistics for this Flight)

Total Flights Observed
7
Total Delays ( > 1 min )
5
Codeshares
0
Average Delay (min.)
41.2
Standard Deviation
25.2
Min
0
Max
67

WN 397 On-Time Performance Details

Overall Rating
0.9 of 5
Poor
Percentage On-Time 43%
Average Delay Time 41.2 min
FlightStats Rating is a merit measurement considering both on-time performance and delay severity. The score, 0.9 shows that this flight has on-time performance characteristics better than 17% of all other flights in the FlightStats database.
On-Time Performance Rating
0.1 of 5
Very Poor
Percentage On-Time 43%
This flight has an on-time performance of 43%. Statistically, when taking into consideration sample size, standard deviation, and mean, this flight is on-time more often than 2% of other flights.
Delay Performance
1.7 of 5
Average
Average Delay Time 41.2 min
This flight has an average delay of 41.2 minutes with a standard deviation of 25.2 minutes. Statistically, when taking into consideration sample size, standard deviation, and mean, this flight has delay performance characteristics better than 34% of other flights.

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