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(WN) Southwest Airlines 121 On-Time Performance Rating

Date Range:

01-Dec-2025 to 31-Jan-2026

(PHX) Phoenix Sky Harbor International Airport

Phoenix, AZ, US

(BOI) Boise Air Terminal

Boise, ID, US

On-Time Performance Chart

(using rounded numbers)
On-Time
9
45%
Late
5
25%
Very Late
2
10%
Excessive
4
20%
Cancelled
0
0%
Diverted
0
0%

Delay Statistics

(Aggregate Arrival Delay Statistics for this Flight)

Total Flights Observed
20
Total Delays ( > 1 min )
14
Codeshares
0
Average Delay (min.)
31.928571428571427
Standard Deviation
25.9
Min
0
Max
91

WN 121 On-Time Performance Details

Overall Rating
1.5 of 5
Poor
Percentage On-Time 45%
Average Delay Time 31.928571428571427 min
FlightStats Rating is a merit measurement considering both on-time performance and delay severity. The score, 1.5 shows that this flight has on-time performance characteristics better than 28% of all other flights in the FlightStats database.
On-Time Performance Rating
0.0 of 5
Very Poor
Percentage On-Time 45%
This flight has an on-time performance of 45%. 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
2.9 of 5
Average
Average Delay Time 31.928571428571427 min
This flight has an average delay of 31.928571428571427 minutes with a standard deviation of 25.9 minutes. Statistically, when taking into consideration sample size, standard deviation, and mean, this flight has delay performance characteristics better than 58% of other flights.

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