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(UA) United Airlines 231 On-Time Performance Rating

Date Range:

15-Dec-2025 to 15-Feb-2026

(EWR) Newark Liberty International Airport

Newark, NJ, US

(SFO) San Francisco International Airport

San Francisco, CA, US

On-Time Performance Chart

(using rounded numbers)
On-Time
14
70%
Late
1
5%
Very Late
1
5%
Excessive
3
15%
Cancelled
1
5%
Diverted
0
0%

Delay Statistics

(Aggregate Arrival Delay Statistics for this Flight)

Total Flights Observed
20
Total Delays ( > 1 min )
9
Codeshares
0
Average Delay (min.)
52.666666666666664
Standard Deviation
72.7
Min
0
Max
213

UA 231 On-Time Performance Details

Overall Rating
1.1 of 5
Poor
Percentage On-Time 70%
Average Delay Time 52.666666666666664 min
FlightStats Rating is a merit measurement considering both on-time performance and delay severity. The score, 1.1 shows that this flight has on-time performance characteristics better than 20% of all other flights in the FlightStats database.
On-Time Performance Rating
1.4 of 5
Poor
Percentage On-Time 70%
This flight has an on-time performance of 70%. 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
0.7 of 5
Poor
Average Delay Time 52.666666666666664 min
This flight has an average delay of 52.666666666666664 minutes with a standard deviation of 72.7 minutes. Statistically, when taking into consideration sample size, standard deviation, and mean, this flight has delay performance characteristics better than 14% of other flights.

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