(WN) Southwest Airlines 4015 On-Time Performance Rating

Date Range:

15-Mar-2026 to 15-May-2026

(MCI) Kansas City International Airport

Kansas City, MO, US

(STL) St Louis Lambert International Airport

Saint Louis, MO, US

On-Time Performance Chart

(using rounded numbers)

On-Time

95%

Late

Very Late

Excessive

Cancelled

Diverted

Delay Statistics

(Aggregate Arrival Delay Statistics for this Flight)

Total Flights Observed

Total Delays ( > 1 min )

Codeshares

Average Delay (min.)

15.8

Standard Deviation

17.3

Min

Max

WN 4015 On-Time Performance Details

Overall Rating

4.3 of 5

Good

Percentage On-Time 95%

Average Delay Time 15.8 min

FlightStats Rating is a merit measurement considering both on-time performance and delay severity. The score, 4.3 shows that this flight has on-time performance characteristics better than 85% of all other flights in the FlightStats database.

On-Time Performance Rating

5.0 of 5

Very Good

Percentage On-Time 95%

This flight has an on-time performance of 95%. Statistically, when taking into consideration sample size, standard deviation, and mean, this flight is on-time more often than 100% of other flights.

Delay Performance

3.6 of 5

Good

Average Delay Time 15.8 min

This flight has an average delay of 15.8 minutes with a standard deviation of 17.3 minutes. Statistically, when taking into consideration sample size, standard deviation, and mean, this flight has delay performance characteristics better than 73% of other flights.