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(WN) Southwest Airlines 4027 On-Time Performance Rating

Date Range:

15-May-2026 to 15-Jul-2026

(DEN) Denver International Airport

Denver, CO, US

(SLC) Salt Lake City International Airport

Salt Lake City, UT, US

On-Time Performance Chart

(using rounded numbers)
On-Time
29
81%
Late
4
11%
Very Late
2
6%
Excessive
1
3%
Cancelled
0
0%
Diverted
0
0%

Delay Statistics

(Aggregate Arrival Delay Statistics for this Flight)

Total Flights Observed
36
Total Delays ( > 1 min )
21
Codeshares
0
Average Delay (min.)
14.047619047619047
Standard Deviation
15.5
Min
0
Max
62

WN 4027 On-Time Performance Details

Overall Rating
4.3 of 5
Good
Percentage On-Time 81%
Average Delay Time 14.047619047619047 min
FlightStats Rating is a merit measurement considering both on-time performance and delay severity. The score, 4.3 shows that this flight has on-time performance characteristics better than 85% of all other flights in the FlightStats database.
On-Time Performance Rating
3.9 of 5
Good
Percentage On-Time 81%
This flight has an on-time performance of 81%. Statistically, when taking into consideration sample size, standard deviation, and mean, this flight is on-time more often than 79% of other flights.
Delay Performance
4.7 of 5
Very Good
Average Delay Time 14.047619047619047 min
This flight has an average delay of 14.047619047619047 minutes with a standard deviation of 15.5 minutes. Statistically, when taking into consideration sample size, standard deviation, and mean, this flight has delay performance characteristics better than 95% of other flights.

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