(WN) Southwest Airlines 1156 On-Time Performance Rating

Date Range:

01-Jul-2026 to 31-Aug-2026

(BUF) Buffalo Niagara International Airport

Buffalo, NY, US

(BWI) Baltimore Washington International Airport

Baltimore, MD, US

On-Time Performance Chart

(using rounded numbers)

On-Time

89%

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.)

12.266666666666667

Standard Deviation

15.5

Min

Max

WN 1156 On-Time Performance Details

Overall Rating

4.8 of 5

Very Good

Percentage On-Time 89%

Average Delay Time 12.266666666666667 min

FlightStats Rating is a merit measurement considering both on-time performance and delay severity. The score, 4.8 shows that this flight has on-time performance characteristics better than 95% of all other flights in the FlightStats database.

On-Time Performance Rating

4.9 of 5

Very Good

Percentage On-Time 89%

This flight has an on-time performance of 89%. Statistically, when taking into consideration sample size, standard deviation, and mean, this flight is on-time more often than 98% of other flights.

Delay Performance

4.7 of 5

Very Good

Average Delay Time 12.266666666666667 min

This flight has an average delay of 12.266666666666667 minutes with a standard deviation of 15.5 minutes. Statistically, when taking into consideration sample size, standard deviation, and mean, this flight has delay performance characteristics better than 95% of other flights.