(WN) Southwest Airlines 921 On-Time Performance Rating

Date Range:

15-Apr-2026 to 15-Jun-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

90%

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.)

16.272727272727273

Standard Deviation

Min

Max

WN 921 On-Time Performance Details

Overall Rating

4.5 of 5

Good

Percentage On-Time 91%

Average Delay Time 16.272727272727273 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

4.9 of 5

Very Good

Percentage On-Time 91%

This flight has an on-time performance of 91%. Statistically, when taking into consideration sample size, standard deviation, and mean, this flight is on-time more often than 97% of other flights.

Delay Performance

4.1 of 5

Good

Average Delay Time 16.272727272727273 min

This flight has an average delay of 16.272727272727273 minutes with a standard deviation of 17 minutes. Statistically, when taking into consideration sample size, standard deviation, and mean, this flight has delay performance characteristics better than 82% of other flights.