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(WN) Southwest Airlines 851 On-Time Performance Rating

Date Range:

15-Jan-2026 to 15-Mar-2026

(BWI) Baltimore Washington International Airport

Baltimore, MD, US

(BOS) Boston Logan International Airport

Boston, MA, US

On-Time Performance Chart

(using rounded numbers)
On-Time
22
67%
Late
5
15%
Very Late
2
6%
Excessive
2
6%
Cancelled
2
6%
Diverted
0
0%

Delay Statistics

(Aggregate Arrival Delay Statistics for this Flight)

Total Flights Observed
33
Total Delays ( > 1 min )
16
Codeshares
0
Average Delay (min.)
30.6875
Standard Deviation
46.7
Min
0
Max
191

WN 851 On-Time Performance Details

Overall Rating
1.7 of 5
Average
Percentage On-Time 67%
Average Delay Time 30.6875 min
FlightStats Rating is a merit measurement considering both on-time performance and delay severity. The score, 1.7 shows that this flight has on-time performance characteristics better than 32% of all other flights in the FlightStats database.
On-Time Performance Rating
0.4 of 5
Very Poor
Percentage On-Time 67%
This flight has an on-time performance of 67%. Statistically, when taking into consideration sample size, standard deviation, and mean, this flight is on-time more often than 8% of other flights.
Delay Performance
2.9 of 5
Average
Average Delay Time 30.6875 min
This flight has an average delay of 30.6875 minutes with a standard deviation of 46.7 minutes. Statistically, when taking into consideration sample size, standard deviation, and mean, this flight has delay performance characteristics better than 58% of other flights.

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