background

(WN) Southwest Airlines 4121 On-Time Performance Rating

Date Range:

15-Jun-2026 to 15-Aug-2026

(MDW) Chicago Midway International Airport

Chicago, IL, US

(SMF) Sacramento International Airport

Sacramento, CA, US

On-Time Performance Chart

(using rounded numbers)
On-Time
10
32%
Late
9
29%
Very Late
4
13%
Excessive
6
19%
Cancelled
2
6%
Diverted
0
0%

Delay Statistics

(Aggregate Arrival Delay Statistics for this Flight)

Total Flights Observed
31
Total Delays ( > 1 min )
22
Codeshares
0
Average Delay (min.)
40.81818181818182
Standard Deviation
34
Min
0
Max
122

WN 4121 On-Time Performance Details

Overall Rating
1.0 of 5
Poor
Percentage On-Time 32%
Average Delay Time 40.81818181818182 min
FlightStats Rating is a merit measurement considering both on-time performance and delay severity. The score, 1 shows that this flight has on-time performance characteristics better than 18% of all other flights in the FlightStats database.
On-Time Performance Rating
0.0 of 5
Very Poor
Percentage On-Time 32%
This flight has an on-time performance of 32%. 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
1.9 of 5
Average
Average Delay Time 40.81818181818182 min
This flight has an average delay of 40.81818181818182 minutes with a standard deviation of 34 minutes. Statistically, when taking into consideration sample size, standard deviation, and mean, this flight has delay performance characteristics better than 38% of other flights.

Other Stops for WN 4121