(WN) Southwest Airlines 1228 On-Time Performance Rating

Date Range:

01-Dec-2025 to 31-Jan-2026

(SFO) San Francisco International Airport

San Francisco, CA, US

(DEN) Denver International Airport

Denver, CO, US

On-Time Performance Chart

(using rounded numbers)

On-Time

79%

Late

17%

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.)

15.733333333333333

Standard Deviation

24.4

Min

Max

101

WN 1228 On-Time Performance Details

Overall Rating

4.2 of 5

Good

Percentage On-Time 79%

Average Delay Time 15.733333333333333 min

FlightStats Rating is a merit measurement considering both on-time performance and delay severity. The score, 4.2 shows that this flight has on-time performance characteristics better than 82% of all other flights in the FlightStats database.

On-Time Performance Rating

3.8 of 5

Good

Percentage On-Time 79%

This flight has an on-time performance of 79%. Statistically, when taking into consideration sample size, standard deviation, and mean, this flight is on-time more often than 76% of other flights.

Delay Performance

4.5 of 5

Good

Average Delay Time 15.733333333333333 min

This flight has an average delay of 15.733333333333333 minutes with a standard deviation of 24.4 minutes. Statistically, when taking into consideration sample size, standard deviation, and mean, this flight has delay performance characteristics better than 90% of other flights.