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(WN) Southwest Airlines 991 On-Time Performance Rating

Date Range:

15-Oct-2025 to 15-Dec-2025

(MDW) Chicago Midway International Airport

Chicago, IL, US

(AUS) Austin-Bergstrom International Airport

Austin, TX, US

On-Time Performance Chart

(using rounded numbers)
On-Time
30
79%
Late
2
5%
Very Late
4
11%
Excessive
1
3%
Cancelled
1
3%
Diverted
0
0%

Delay Statistics

(Aggregate Arrival Delay Statistics for this Flight)

Total Flights Observed
38
Total Delays ( > 1 min )
15
Codeshares
0
Average Delay (min.)
21.066666666666666
Standard Deviation
15.7
Min
0
Max
60

WN 991 On-Time Performance Details

Overall Rating
3.7 of 5
Good
Percentage On-Time 79%
Average Delay Time 21.066666666666666 min
FlightStats Rating is a merit measurement considering both on-time performance and delay severity. The score, 3.7 shows that this flight has on-time performance characteristics better than 73% of all other flights in the FlightStats database.
On-Time Performance Rating
3.5 of 5
Average
Percentage On-Time 79%
This flight has an on-time performance of 79%. Statistically, when taking into consideration sample size, standard deviation, and mean, this flight is on-time more often than 69% of other flights.
Delay Performance
3.9 of 5
Good
Average Delay Time 21.066666666666666 min
This flight has an average delay of 21.066666666666666 minutes with a standard deviation of 15.7 minutes. Statistically, when taking into consideration sample size, standard deviation, and mean, this flight has delay performance characteristics better than 79% of other flights.

Other Stops for WN 991