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(WN) Southwest Airlines 4128 On-Time Performance Rating

Date Range:

15-Mar-2026 to 15-May-2026

(MDW) Chicago Midway International Airport

Chicago, IL, US

(DCA) Ronald Reagan Washington National Airport

Washington, DC, US

On-Time Performance Chart

(using rounded numbers)
On-Time
3
60%
Late
0
0%
Very Late
1
20%
Excessive
1
20%
Cancelled
0
0%
Diverted
0
0%

Delay Statistics

(Aggregate Arrival Delay Statistics for this Flight)

Total Flights Observed
5
Total Delays ( > 1 min )
2
Codeshares
0
Average Delay (min.)
42
Standard Deviation
8.5
Min
0
Max
48

WN 4128 On-Time Performance Details

Overall Rating
1.3 of 5
Poor
Percentage On-Time 60%
Average Delay Time 42 min
FlightStats Rating is a merit measurement considering both on-time performance and delay severity. The score, 1.3 shows that this flight has on-time performance characteristics better than 25% of all other flights in the FlightStats database.
On-Time Performance Rating
0.7 of 5
Poor
Percentage On-Time 60%
This flight has an on-time performance of 60%. Statistically, when taking into consideration sample size, standard deviation, and mean, this flight is on-time more often than 14% of other flights.
Delay Performance
1.9 of 5
Average
Average Delay Time 42 min
This flight has an average delay of 42 minutes with a standard deviation of 8.5 minutes. Statistically, when taking into consideration sample size, standard deviation, and mean, this flight has delay performance characteristics better than 38% of other flights.

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