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(WN) Southwest Airlines 991 On-Time Performance Rating

Date Range:

15-Jan-2026 to 15-Mar-2026

(BNA) Nashville International Airport

Nashville, TN, US

(MDW) Chicago Midway International Airport

Chicago, IL, US

On-Time Performance Chart

(using rounded numbers)
On-Time
5
71%
Late
0
0%
Very Late
0
0%
Excessive
1
14%
Cancelled
1
14%
Diverted
0
0%

Delay Statistics

(Aggregate Arrival Delay Statistics for this Flight)

Total Flights Observed
7
Total Delays ( > 1 min )
3
Codeshares
0
Average Delay (min.)
27.666666666666668
Standard Deviation
34.1
Min
0
Max
67

WN 991 On-Time Performance Details

Overall Rating
2.4 of 5
Average
Percentage On-Time 71%
Average Delay Time 27.666666666666668 min
FlightStats Rating is a merit measurement considering both on-time performance and delay severity. The score, 2.4 shows that this flight has on-time performance characteristics better than 47% of all other flights in the FlightStats database.
On-Time Performance Rating
1.9 of 5
Average
Percentage On-Time 71%
This flight has an on-time performance of 71%. Statistically, when taking into consideration sample size, standard deviation, and mean, this flight is on-time more often than 38% of other flights.
Delay Performance
2.9 of 5
Average
Average Delay Time 27.666666666666668 min
This flight has an average delay of 27.666666666666668 minutes with a standard deviation of 34.1 minutes. Statistically, when taking into consideration sample size, standard deviation, and mean, this flight has delay performance characteristics better than 58% of other flights.

Other Stops for WN 991