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(WN) Southwest Airlines 431 On-Time Performance Rating

Date Range:

01-Apr-2026 to 31-May-2026

(SEA) Seattle-Tacoma International Airport

Seattle, WA, US

(LAS) Las Vegas Harry Reid International Airport

Las Vegas, NV, US

On-Time Performance Chart

(using rounded numbers)
On-Time
23
96%
Late
0
0%
Very Late
0
0%
Excessive
0
0%
Cancelled
1
4%
Diverted
0
0%

Delay Statistics

(Aggregate Arrival Delay Statistics for this Flight)

Total Flights Observed
24
Total Delays ( > 1 min )
7
Codeshares
0
Average Delay (min.)
4.428571428571429
Standard Deviation
3
Min
0
Max
9

WN 431 On-Time Performance Details

Overall Rating
4.7 of 5
Very Good
Percentage On-Time 96%
Average Delay Time 4.428571428571429 min
FlightStats Rating is a merit measurement considering both on-time performance and delay severity. The score, 4.7 shows that this flight has on-time performance characteristics better than 93% of all other flights in the FlightStats database.
On-Time Performance Rating
4.9 of 5
Very Good
Percentage On-Time 96%
This flight has an on-time performance of 96%. Statistically, when taking into consideration sample size, standard deviation, and mean, this flight is on-time more often than 98% of other flights.
Delay Performance
4.5 of 5
Good
Average Delay Time 4.428571428571429 min
This flight has an average delay of 4.428571428571429 minutes with a standard deviation of 3 minutes. Statistically, when taking into consideration sample size, standard deviation, and mean, this flight has delay performance characteristics better than 90% of other flights.

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