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(WN) Southwest Airlines 4991 On-Time Performance Rating

Date Range:

01-Sep-2026 to 31-Oct-2026

(TUS) Tucson International Airport

Tucson, AZ, US

(DEN) Denver International Airport

Denver, CO, US

On-Time Performance Chart

(using rounded numbers)
On-Time
7
54%
Late
2
15%
Very Late
1
8%
Excessive
2
15%
Cancelled
0
0%
Diverted
1
8%

Delay Statistics

(Aggregate Arrival Delay Statistics for this Flight)

Total Flights Observed
12
Total Delays ( > 1 min )
10
Codeshares
0
Average Delay (min.)
26
Standard Deviation
30.8
Min
0
Max
90

WN 4991 On-Time Performance Details

Overall Rating
1.7 of 5
Average
Percentage On-Time 58%
Average Delay Time 26 min
FlightStats Rating is a merit measurement considering both on-time performance and delay severity. The score, 1.7 shows that this flight has on-time performance characteristics better than 32% of all other flights in the FlightStats database.
On-Time Performance Rating
0.2 of 5
Very Poor
Percentage On-Time 58%
This flight has an on-time performance of 58%. Statistically, when taking into consideration sample size, standard deviation, and mean, this flight is on-time more often than 4% of other flights.
Delay Performance
3.1 of 5
Average
Average Delay Time 26 min
This flight has an average delay of 26 minutes with a standard deviation of 30.8 minutes. Statistically, when taking into consideration sample size, standard deviation, and mean, this flight has delay performance characteristics better than 62% of other flights.

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