(WN) Southwest Airlines 921 On-Time Performance Rating

Date Range:

15-Feb-2026 to 15-Apr-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

91%

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.)

8.666666666666666

Standard Deviation

Min

Max

WN 921 On-Time Performance Details

Overall Rating

4.5 of 5

Good

Percentage On-Time 91%

Average Delay Time 8.666666666666666 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 88% of all other flights in the FlightStats database.

On-Time Performance Rating

4.7 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 93% of other flights.

Delay Performance

4.2 of 5

Good

Average Delay Time 8.666666666666666 min

This flight has an average delay of 8.666666666666666 minutes with a standard deviation of 9 minutes. Statistically, when taking into consideration sample size, standard deviation, and mean, this flight has delay performance characteristics better than 84% of other flights.