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(WN) Southwest Airlines 491 On-Time Performance Rating

Date Range:

01-Jul-2026 to 31-Aug-2026

(PHX) Phoenix Sky Harbor International Airport

Phoenix, AZ, US

(STL) St Louis Lambert International Airport

Saint Louis, MO, US

On-Time Performance Chart

(using rounded numbers)
On-Time
2
40%
Late
2
40%
Very Late
1
20%
Excessive
0
0%
Cancelled
0
0%
Diverted
0
0%

Delay Statistics

(Aggregate Arrival Delay Statistics for this Flight)

Total Flights Observed
5
Total Delays ( > 1 min )
5
Codeshares
0
Average Delay (min.)
18.4
Standard Deviation
11.1
Min
8
Max
33

WN 491 On-Time Performance Details

Overall Rating
2.0 of 5
Average
Percentage On-Time 40%
Average Delay Time 18.4 min
FlightStats Rating is a merit measurement considering both on-time performance and delay severity. The score, 2 shows that this flight has on-time performance characteristics better than 39% of all other flights in the FlightStats database.
On-Time Performance Rating
0.2 of 5
Very Poor
Percentage On-Time 40%
This flight has an on-time performance of 40%. 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
3.8 of 5
Good
Average Delay Time 18.4 min
This flight has an average delay of 18.4 minutes with a standard deviation of 11.1 minutes. Statistically, when taking into consideration sample size, standard deviation, and mean, this flight has delay performance characteristics better than 76% of other flights.

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