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(WN) Southwest Airlines 121 On-Time Performance Rating

Date Range:

15-Aug-2026 to 15-Oct-2026

(DEN) Denver International Airport

Denver, CO, US

(PHX) Phoenix Sky Harbor International Airport

Phoenix, AZ, US

On-Time Performance Chart

(using rounded numbers)
On-Time
11
52%
Late
2
10%
Very Late
1
5%
Excessive
7
33%
Cancelled
0
0%
Diverted
0
0%

Delay Statistics

(Aggregate Arrival Delay Statistics for this Flight)

Total Flights Observed
21
Total Delays ( > 1 min )
14
Codeshares
0
Average Delay (min.)
44.857142857142854
Standard Deviation
39.6
Min
0
Max
134

WN 121 On-Time Performance Details

Overall Rating
0.5 of 5
Very Poor
Percentage On-Time 52%
Average Delay Time 44.857142857142854 min
FlightStats Rating is a merit measurement considering both on-time performance and delay severity. The score, 0.5 shows that this flight has on-time performance characteristics better than 8% of all other flights in the FlightStats database.
On-Time Performance Rating
0.0 of 5
Very Poor
Percentage On-Time 52%
This flight has an on-time performance of 52%. 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
0.9 of 5
Poor
Average Delay Time 44.857142857142854 min
This flight has an average delay of 44.857142857142854 minutes with a standard deviation of 39.6 minutes. Statistically, when taking into consideration sample size, standard deviation, and mean, this flight has delay performance characteristics better than 18% of other flights.

Other Stops for WN 121