(WN) Southwest Airlines 1551 On-Time Performance Rating

Date Range:

01-Sep-2026 to 31-Oct-2026

(DEN) Denver International Airport

Denver, CO, US

(BOI) Boise Air Terminal

Boise, ID, US

On-Time Performance Chart

(using rounded numbers)

On-Time

73%

Late

14%

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.)

26.272727272727273

Standard Deviation

23.3

Min

Max

WN 1551 On-Time Performance Details

Overall Rating

2.3 of 5

Average

Percentage On-Time 73%

Average Delay Time 26.272727272727273 min

FlightStats Rating is a merit measurement considering both on-time performance and delay severity. The score, 2.3 shows that this flight has on-time performance characteristics better than 44% of all other flights in the FlightStats database.

On-Time Performance Rating

1.4 of 5

Poor

Percentage On-Time 73%

This flight has an on-time performance of 73%. Statistically, when taking into consideration sample size, standard deviation, and mean, this flight is on-time more often than 27% of other flights.

Delay Performance

3.1 of 5

Average

Average Delay Time 26.272727272727273 min

This flight has an average delay of 26.272727272727273 minutes with a standard deviation of 23.3 minutes. Statistically, when taking into consideration sample size, standard deviation, and mean, this flight has delay performance characteristics better than 62% of other flights.