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(WN) Southwest Airlines 4387 On-Time Performance Rating

Date Range:

15-Dec-2025 to 15-Feb-2026

(IND) Indianapolis International Airport

Indianapolis, IN, US

(DEN) Denver International Airport

Denver, CO, US

On-Time Performance Chart

(using rounded numbers)
On-Time
32
78%
Late
5
12%
Very Late
0
0%
Excessive
3
7%
Cancelled
1
2%
Diverted
0
0%

Delay Statistics

(Aggregate Arrival Delay Statistics for this Flight)

Total Flights Observed
41
Total Delays ( > 1 min )
19
Codeshares
0
Average Delay (min.)
21.210526315789473
Standard Deviation
23.2
Min
0
Max
85

WN 4387 On-Time Performance Details

Overall Rating
4.0 of 5
Good
Percentage On-Time 78%
Average Delay Time 21.210526315789473 min
FlightStats Rating is a merit measurement considering both on-time performance and delay severity. The score, 4 shows that this flight has on-time performance characteristics better than 79% of all other flights in the FlightStats database.
On-Time Performance Rating
3.8 of 5
Good
Percentage On-Time 78%
This flight has an on-time performance of 78%. Statistically, when taking into consideration sample size, standard deviation, and mean, this flight is on-time more often than 76% of other flights.
Delay Performance
4.2 of 5
Good
Average Delay Time 21.210526315789473 min
This flight has an average delay of 21.210526315789473 minutes with a standard deviation of 23.2 minutes. Statistically, when taking into consideration sample size, standard deviation, and mean, this flight has delay performance characteristics better than 84% of other flights.