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(WN) Southwest Airlines 4156 On-Time Performance Rating

Date Range:

15-Aug-2026 to 15-Oct-2026

(PDX) Portland International Airport

Portland, OR, US

(DEN) Denver International Airport

Denver, CO, US

On-Time Performance Chart

(using rounded numbers)
On-Time
10
77%
Late
1
8%
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
13
Total Delays ( > 1 min )
6
Codeshares
0
Average Delay (min.)
20.833333333333332
Standard Deviation
16.8
Min
0
Max
45

WN 4156 On-Time Performance Details

Overall Rating
2.9 of 5
Average
Percentage On-Time 77%
Average Delay Time 20.833333333333332 min
FlightStats Rating is a merit measurement considering both on-time performance and delay severity. The score, 2.9 shows that this flight has on-time performance characteristics better than 57% of all other flights in the FlightStats database.
On-Time Performance Rating
2.3 of 5
Average
Percentage On-Time 77%
This flight has an on-time performance of 77%. Statistically, when taking into consideration sample size, standard deviation, and mean, this flight is on-time more often than 46% of other flights.
Delay Performance
3.5 of 5
Average
Average Delay Time 20.833333333333332 min
This flight has an average delay of 20.833333333333332 minutes with a standard deviation of 16.8 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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