(WN) Southwest Airlines 311 On-Time Performance Rating

Date Range:

15-Jun-2025 to 15-Aug-2025

(MDW) Chicago Midway International Airport

Chicago, IL, US

(SEA) Seattle-Tacoma International Airport

Seattle, WA, US

On-Time Performance Chart

(using rounded numbers)

On-Time

42%

Late

33%

Very Late

Excessive

17%

Cancelled

Diverted

Delay Statistics

(Aggregate Arrival Delay Statistics for this Flight)

Total Flights Observed

Total Delays ( > 1 min )

Codeshares

Average Delay (min.)

29.7

Standard Deviation

26.8

Min

Max

WN 311 On-Time Performance Details

Overall Rating

1.7 of 5

Average

Percentage On-Time 42%

Average Delay Time 29.7 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 33% of all other flights in the FlightStats database.

On-Time Performance Rating

0.1 of 5

Very Poor

Percentage On-Time 42%

This flight has an on-time performance of 42%. Statistically, when taking into consideration sample size, standard deviation, and mean, this flight is on-time more often than 1% of other flights.

Delay Performance

3.3 of 5

Average

Average Delay Time 29.7 min

This flight has an average delay of 29.7 minutes with a standard deviation of 26.8 minutes. Statistically, when taking into consideration sample size, standard deviation, and mean, this flight has delay performance characteristics better than 66% of other flights.