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(UA) United Airlines 538 On-Time Performance Rating

Date Range:

15-Aug-2025 to 15-Oct-2025

(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
44
73%
Late
7
12%
Very Late
1
2%
Excessive
8
13%
Cancelled
0
0%
Diverted
0
0%

Delay Statistics

(Aggregate Arrival Delay Statistics for this Flight)

Total Flights Observed
60
Total Delays ( > 1 min )
33
Codeshares
0
Average Delay (min.)
51.09090909090909
Standard Deviation
117.5
Min
0
Max
560

UA 538 On-Time Performance Details

Overall Rating
0.7 of 5
Poor
Percentage On-Time 73%
Average Delay Time 51.09090909090909 min
FlightStats Rating is a merit measurement considering both on-time performance and delay severity. The score, 0.7 shows that this flight has on-time performance characteristics better than 12% of all other flights in the FlightStats database.
On-Time Performance Rating
1.2 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 24% of other flights.
Delay Performance
0.1 of 5
Very Poor
Average Delay Time 51.09090909090909 min
This flight has an average delay of 51.09090909090909 minutes with a standard deviation of 117.5 minutes. Statistically, when taking into consideration sample size, standard deviation, and mean, this flight has delay performance characteristics better than 1% of other flights.

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