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(WN) Southwest Airlines 4377 On-Time Performance Rating

Date Range:

15-Mar-2026 to 15-May-2026

(LAS) Las Vegas Harry Reid International Airport

Las Vegas, NV, US

(SAN) San Diego International Airport

San Diego, CA, US

On-Time Performance Chart

(using rounded numbers)
On-Time
5
42%
Late
5
42%
Very Late
1
8%
Excessive
1
8%
Cancelled
0
0%
Diverted
0
0%

Delay Statistics

(Aggregate Arrival Delay Statistics for this Flight)

Total Flights Observed
12
Total Delays ( > 1 min )
8
Codeshares
0
Average Delay (min.)
22.625
Standard Deviation
15
Min
0
Max
53

WN 4377 On-Time Performance Details

Overall Rating
1.8 of 5
Average
Percentage On-Time 42%
Average Delay Time 22.625 min
FlightStats Rating is a merit measurement considering both on-time performance and delay severity. The score, 1.8 shows that this flight has on-time performance characteristics better than 34% of all other flights in the FlightStats database.
On-Time Performance Rating
0.0 of 5
Very Poor
Percentage On-Time 42%
This flight has an on-time performance of 42%. Statistically, when taking into consideration sample size, standard deviation, and mean, this flight is on-time more often than 0% of other flights.
Delay Performance
3.5 of 5
Average
Average Delay Time 22.625 min
This flight has an average delay of 22.625 minutes with a standard deviation of 15 minutes. Statistically, when taking into consideration sample size, standard deviation, and mean, this flight has delay performance characteristics better than 69% of other flights.

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