(WN) Southwest Airlines 766 On-Time Performance Rating

Date Range:

15-Aug-2026 to 15-Oct-2026

(BUF) Buffalo Niagara International Airport

Buffalo, NY, US

(MDW) Chicago Midway International Airport

Chicago, IL, US

On-Time Performance Chart

(using rounded numbers)

On-Time

83%

Late

13%

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.)

9.333333333333334

Standard Deviation

6.6

Min

Max

WN 766 On-Time Performance Details

Overall Rating

4.5 of 5

Good

Percentage On-Time 83%

Average Delay Time 9.333333333333334 min

FlightStats Rating is a merit measurement considering both on-time performance and delay severity. The score, 4.5 shows that this flight has on-time performance characteristics better than 89% of all other flights in the FlightStats database.

On-Time Performance Rating

4.1 of 5

Good

Percentage On-Time 83%

This flight has an on-time performance of 83%. Statistically, when taking into consideration sample size, standard deviation, and mean, this flight is on-time more often than 82% of other flights.

Delay Performance

4.9 of 5

Very Good

Average Delay Time 9.333333333333334 min

This flight has an average delay of 9.333333333333334 minutes with a standard deviation of 6.6 minutes. Statistically, when taking into consideration sample size, standard deviation, and mean, this flight has delay performance characteristics better than 97% of other flights.