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(WN) Southwest Airlines 551 On-Time Performance Rating

Date Range:

01-Mar-2026 to 30-Apr-2026

(AUS) Austin-Bergstrom International Airport

Austin, TX, US

(BOS) Boston Logan International Airport

Boston, MA, US

On-Time Performance Chart

(using rounded numbers)
On-Time
9
43%
Late
5
24%
Very Late
2
10%
Excessive
5
24%
Cancelled
0
0%
Diverted
0
0%

Delay Statistics

(Aggregate Arrival Delay Statistics for this Flight)

Total Flights Observed
21
Total Delays ( > 1 min )
16
Codeshares
0
Average Delay (min.)
36.5
Standard Deviation
30.7
Min
0
Max
120

WN 551 On-Time Performance Details

Overall Rating
0.9 of 5
Poor
Percentage On-Time 43%
Average Delay Time 36.5 min
FlightStats Rating is a merit measurement considering both on-time performance and delay severity. The score, 0.9 shows that this flight has on-time performance characteristics better than 16% of all other flights in the FlightStats database.
On-Time Performance Rating
0.0 of 5
Very Poor
Percentage On-Time 43%
This flight has an on-time performance of 43%. Statistically, when taking into consideration sample size, standard deviation, and mean, this flight is on-time more often than 0% of other flights.
Delay Performance
1.7 of 5
Average
Average Delay Time 36.5 min
This flight has an average delay of 36.5 minutes with a standard deviation of 30.7 minutes. Statistically, when taking into consideration sample size, standard deviation, and mean, this flight has delay performance characteristics better than 34% of other flights.

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