(WN) Southwest Airlines 439 On-Time Performance Rating

Date Range:

01-Aug-2025 to 30-Sep-2025

(STL) St Louis Lambert International Airport

Saint Louis, MO, US

(ATL) Atlanta Hartsfield-Jackson International Airport

Atlanta, GA, US

On-Time Performance Chart

(using rounded numbers)

On-Time

100%

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.)

6.5

Standard Deviation

4.9

Min

Max

WN 439 On-Time Performance Details

Overall Rating

4.4 of 5

Good

Percentage On-Time 100%

Average Delay Time 6.5 min

FlightStats Rating is a merit measurement considering both on-time performance and delay severity. The score, 4.4 shows that this flight has on-time performance characteristics better than 87% of all other flights in the FlightStats database.

On-Time Performance Rating

5.0 of 5

Very Good

Percentage On-Time 100%

This flight has an on-time performance of 100%. 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

3.8 of 5

Good

Average Delay Time 6.5 min

This flight has an average delay of 6.5 minutes with a standard deviation of 4.9 minutes. Statistically, when taking into consideration sample size, standard deviation, and mean, this flight has delay performance characteristics better than 76% of other flights.