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(WN) Southwest Airlines 4878 On-Time Performance Rating

Date Range:

01-Jul-2026 to 31-Aug-2026

(PHX) Phoenix Sky Harbor International Airport

Phoenix, AZ, US

(COS) Colorado Springs Airport

Colorado Springs, CO, US

On-Time Performance Chart

(using rounded numbers)
On-Time
3
38%
Late
3
38%
Very Late
0
0%
Excessive
2
25%
Cancelled
0
0%
Diverted
0
0%

Delay Statistics

(Aggregate Arrival Delay Statistics for this Flight)

Total Flights Observed
8
Total Delays ( > 1 min )
6
Codeshares
0
Average Delay (min.)
37.833333333333336
Standard Deviation
32.1
Min
0
Max
96

WN 4878 On-Time Performance Details

Overall Rating
1.2 of 5
Poor
Percentage On-Time 38%
Average Delay Time 37.833333333333336 min
FlightStats Rating is a merit measurement considering both on-time performance and delay severity. The score, 1.2 shows that this flight has on-time performance characteristics better than 23% of all other flights in the FlightStats database.
On-Time Performance Rating
0.1 of 5
Very Poor
Percentage On-Time 38%
This flight has an on-time performance of 38%. Statistically, when taking into consideration sample size, standard deviation, and mean, this flight is on-time more often than 1% of other flights.
Delay Performance
2.3 of 5
Average
Average Delay Time 37.833333333333336 min
This flight has an average delay of 37.833333333333336 minutes with a standard deviation of 32.1 minutes. Statistically, when taking into consideration sample size, standard deviation, and mean, this flight has delay performance characteristics better than 46% of other flights.

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