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(UA) United Airlines 431 On-Time Performance Rating

Date Range:

15-Jul-2025 to 15-Sep-2025

(SFO) San Francisco International Airport

San Francisco, CA, US

(BOS) Boston Logan International Airport

Boston, MA, US

On-Time Performance Chart

(using rounded numbers)
On-Time
10
63%
Late
2
13%
Very Late
1
6%
Excessive
2
13%
Cancelled
0
0%
Diverted
1
6%

Delay Statistics

(Aggregate Arrival Delay Statistics for this Flight)

Total Flights Observed
15
Total Delays ( > 1 min )
7
Codeshares
0
Average Delay (min.)
38.714285714285715
Standard Deviation
46.7
Min
0
Max
138

UA 431 On-Time Performance Details

Overall Rating
1.8 of 5
Average
Percentage On-Time 67%
Average Delay Time 38.714285714285715 min
FlightStats Rating is a merit measurement considering both on-time performance and delay severity. The score, 1.8 shows that this flight has on-time performance characteristics better than 34% of all other flights in the FlightStats database.
On-Time Performance Rating
1.4 of 5
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 27% of other flights.
Delay Performance
2.1 of 5
Average
Average Delay Time 38.714285714285715 min
This flight has an average delay of 38.714285714285715 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 42% of other flights.

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