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(WN) Southwest Airlines 991 On-Time Performance Rating

Date Range:

01-Jun-2026 to 31-Jul-2026

(BWI) Baltimore Washington International Airport

Baltimore, MD, US

(MDW) Chicago Midway International Airport

Chicago, IL, US

On-Time Performance Chart

(using rounded numbers)
On-Time
8
73%
Late
0
0%
Very Late
0
0%
Excessive
2
18%
Cancelled
0
0%
Diverted
1
9%

Delay Statistics

(Aggregate Arrival Delay Statistics for this Flight)

Total Flights Observed
10
Total Delays ( > 1 min )
6
Codeshares
0
Average Delay (min.)
59.833333333333336
Standard Deviation
96.7
Min
0
Max
243

WN 991 On-Time Performance Details

Overall Rating
2.3 of 5
Average
Percentage On-Time 80%
Average Delay Time 59.833333333333336 min
FlightStats Rating is a merit measurement considering both on-time performance and delay severity. The score, 2.3 shows that this flight has on-time performance characteristics better than 44% of all other flights in the FlightStats database.
On-Time Performance Rating
3.6 of 5
Good
Percentage On-Time 80%
This flight has an on-time performance of 80%. Statistically, when taking into consideration sample size, standard deviation, and mean, this flight is on-time more often than 73% of other flights.
Delay Performance
0.9 of 5
Poor
Average Delay Time 59.833333333333336 min
This flight has an average delay of 59.833333333333336 minutes with a standard deviation of 96.7 minutes. Statistically, when taking into consideration sample size, standard deviation, and mean, this flight has delay performance characteristics better than 18% of other flights.

Other Stops for WN 991