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(WN) Southwest Airlines 3957 On-Time Performance Rating

Date Range:

15-Jun-2026 to 15-Aug-2026

(STL) St Louis Lambert International Airport

Saint Louis, MO, US

(MDW) Chicago Midway International Airport

Chicago, IL, US

On-Time Performance Chart

(using rounded numbers)
On-Time
19
61%
Late
5
16%
Very Late
1
3%
Excessive
6
19%
Cancelled
0
0%
Diverted
0
0%

Delay Statistics

(Aggregate Arrival Delay Statistics for this Flight)

Total Flights Observed
31
Total Delays ( > 1 min )
16
Codeshares
0
Average Delay (min.)
58.625
Standard Deviation
59.5
Min
0
Max
160

WN 3957 On-Time Performance Details

Overall Rating
0.5 of 5
Very Poor
Percentage On-Time 61%
Average Delay Time 58.625 min
FlightStats Rating is a merit measurement considering both on-time performance and delay severity. The score, 0.5 shows that this flight has on-time performance characteristics better than 8% of all other flights in the FlightStats database.
On-Time Performance Rating
0.5 of 5
Very Poor
Percentage On-Time 61%
This flight has an on-time performance of 61%. Statistically, when taking into consideration sample size, standard deviation, and mean, this flight is on-time more often than 10% of other flights.
Delay Performance
0.4 of 5
Very Poor
Average Delay Time 58.625 min
This flight has an average delay of 58.625 minutes with a standard deviation of 59.5 minutes. Statistically, when taking into consideration sample size, standard deviation, and mean, this flight has delay performance characteristics better than 8% of other flights.

Other Stops for WN 3957