(WN) Southwest Airlines 3520 On-Time Performance Rating

Date Range:

15-Jan-2026 to 15-Mar-2026

(MDW) Chicago Midway International Airport

Chicago, IL, US

(MKE) Milwaukee Mitchell International Airport

Milwaukee, WI, US

On-Time Performance Chart

(using rounded numbers)

On-Time

70%

Late

Very Late

Excessive

20%

Cancelled

Diverted

Delay Statistics

(Aggregate Arrival Delay Statistics for this Flight)

Total Flights Observed

Total Delays ( > 1 min )

Codeshares

Average Delay (min.)

35.875

Standard Deviation

30.9

Min

Max

WN 3520 On-Time Performance Details

Overall Rating

1.7 of 5

Average

Percentage On-Time 70%

Average Delay Time 35.875 min

FlightStats Rating is a merit measurement considering both on-time performance and delay severity. The score, 1.7 shows that this flight has on-time performance characteristics better than 32% of all other flights in the FlightStats database.

On-Time Performance Rating

1.2 of 5

Poor

Percentage On-Time 70%

This flight has an on-time performance of 70%. Statistically, when taking into consideration sample size, standard deviation, and mean, this flight is on-time more often than 24% of other flights.

Delay Performance

2.1 of 5

Average

Average Delay Time 35.875 min

This flight has an average delay of 35.875 minutes with a standard deviation of 30.9 minutes. Statistically, when taking into consideration sample size, standard deviation, and mean, this flight has delay performance characteristics better than 42% of other flights.