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(WN) Southwest Airlines 1603 On-Time Performance Rating

Date Range:

15-Aug-2026 to 15-Oct-2026

(PHX) Phoenix Sky Harbor International Airport

Phoenix, AZ, US

(STL) St Louis Lambert International Airport

Saint Louis, MO, US

On-Time Performance Chart

(using rounded numbers)
On-Time
13
68%
Late
1
5%
Very Late
1
5%
Excessive
4
21%
Cancelled
0
0%
Diverted
0
0%

Delay Statistics

(Aggregate Arrival Delay Statistics for this Flight)

Total Flights Observed
19
Total Delays ( > 1 min )
9
Codeshares
0
Average Delay (min.)
53.44444444444444
Standard Deviation
55.2
Min
0
Max
162

WN 1603 On-Time Performance Details

Overall Rating
0.8 of 5
Poor
Percentage On-Time 68%
Average Delay Time 53.44444444444444 min
FlightStats Rating is a merit measurement considering both on-time performance and delay severity. The score, 0.8 shows that this flight has on-time performance characteristics better than 14% of all other flights in the FlightStats database.
On-Time Performance Rating
0.9 of 5
Poor
Percentage On-Time 68%
This flight has an on-time performance of 68%. Statistically, when taking into consideration sample size, standard deviation, and mean, this flight is on-time more often than 18% of other flights.
Delay Performance
0.6 of 5
Poor
Average Delay Time 53.44444444444444 min
This flight has an average delay of 53.44444444444444 minutes with a standard deviation of 55.2 minutes. Statistically, when taking into consideration sample size, standard deviation, and mean, this flight has delay performance characteristics better than 12% of other flights.

Other Stops for WN 1603