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(WN) Southwest Airlines 399 On-Time Performance Rating

Date Range:

01-Mar-2026 to 30-Apr-2026

(AUS) Austin-Bergstrom International Airport

Austin, TX, US

(MDW) Chicago Midway International Airport

Chicago, IL, US

On-Time Performance Chart

(using rounded numbers)
On-Time
10
91%
Late
1
9%
Very Late
0
0%
Excessive
0
0%
Cancelled
0
0%
Diverted
0
0%

Delay Statistics

(Aggregate Arrival Delay Statistics for this Flight)

Total Flights Observed
11
Total Delays ( > 1 min )
3
Codeshares
0
Average Delay (min.)
15.666666666666666
Standard Deviation
10
Min
0
Max
27

WN 399 On-Time Performance Details

Overall Rating
3.9 of 5
Good
Percentage On-Time 91%
Average Delay Time 15.666666666666666 min
FlightStats Rating is a merit measurement considering both on-time performance and delay severity. The score, 3.9 shows that this flight has on-time performance characteristics better than 77% of all other flights in the FlightStats database.
On-Time Performance Rating
4.3 of 5
Good
Percentage On-Time 91%
This flight has an on-time performance of 91%. Statistically, when taking into consideration sample size, standard deviation, and mean, this flight is on-time more often than 86% of other flights.
Delay Performance
3.5 of 5
Average
Average Delay Time 15.666666666666666 min
This flight has an average delay of 15.666666666666666 minutes with a standard deviation of 10 minutes. Statistically, when taking into consideration sample size, standard deviation, and mean, this flight has delay performance characteristics better than 69% of other flights.

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