(WN) Southwest Airlines 423 On-Time Performance Rating

Date Range:

15-Mar-2026 to 15-May-2026

(MDW) Chicago Midway International Airport

Chicago, IL, US

(MEM) Memphis International Airport

Memphis, TN, US

On-Time Performance Chart

(using rounded numbers)

On-Time

92%

Late

Very Late

Excessive

Cancelled

Diverted

Delay Statistics

(Aggregate Arrival Delay Statistics for this Flight)

Total Flights Observed

Total Delays ( > 1 min )

Codeshares

Average Delay (min.)

22.2

Standard Deviation

40.7

Min

Max

WN 423 On-Time Performance Details

Overall Rating

3.9 of 5

Good

Percentage On-Time 92%

Average Delay Time 22.2 min

FlightStats Rating is a merit measurement considering both on-time performance and delay severity. The score, 3.9 shows that this flight has on-time performance characteristics better than 76% of all other flights in the FlightStats database.

On-Time Performance Rating

4.4 of 5

Good

Percentage On-Time 92%

This flight has an on-time performance of 92%. Statistically, when taking into consideration sample size, standard deviation, and mean, this flight is on-time more often than 88% of other flights.

Delay Performance

3.3 of 5

Average

Average Delay Time 22.2 min

This flight has an average delay of 22.2 minutes with a standard deviation of 40.7 minutes. Statistically, when taking into consideration sample size, standard deviation, and mean, this flight has delay performance characteristics better than 66% of other flights.