(WN) Southwest Airlines 1531 On-Time Performance Rating

Date Range:

01-Jul-2026 to 31-Aug-2026

(GRR) Grand Rapids Gerald R. Ford International Airport

Grand Rapids, MI, US

(MDW) Chicago Midway International Airport

Chicago, IL, US

On-Time Performance Chart

(using rounded numbers)

On-Time

38%

Late

25%

Very Late

25%

Excessive

13%

Cancelled

Diverted

Delay Statistics

(Aggregate Arrival Delay Statistics for this Flight)

Total Flights Observed

Total Delays ( > 1 min )

Codeshares

Average Delay (min.)

26.666666666666668

Standard Deviation

18.1

Min

Max

WN 1531 On-Time Performance Details

Overall Rating

1.8 of 5

Average

Percentage On-Time 38%

Average Delay Time 26.666666666666668 min

FlightStats Rating is a merit measurement considering both on-time performance and delay severity. The score, 1.8 shows that this flight has on-time performance characteristics better than 35% of all other flights in the FlightStats database.

On-Time Performance Rating

0.1 of 5

Very Poor

Percentage On-Time 38%

This flight has an on-time performance of 38%. 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

3.5 of 5

Average

Average Delay Time 26.666666666666668 min

This flight has an average delay of 26.666666666666668 minutes with a standard deviation of 18.1 minutes. Statistically, when taking into consideration sample size, standard deviation, and mean, this flight has delay performance characteristics better than 69% of other flights.