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(UA) United Airlines 511 On-Time Performance Rating

Date Range:

01-Jul-2025 to 31-Aug-2025

(PHX) Phoenix Sky Harbor International Airport

Phoenix, AZ, US

(SFO) San Francisco International Airport

San Francisco, CA, US

On-Time Performance Chart

(using rounded numbers)
On-Time
7
54%
Late
2
15%
Very Late
1
8%
Excessive
3
23%
Cancelled
0
0%
Diverted
0
0%

Delay Statistics

(Aggregate Arrival Delay Statistics for this Flight)

Total Flights Observed
13
Total Delays ( > 1 min )
6
Codeshares
0
Average Delay (min.)
53.166666666666664
Standard Deviation
25.4
Min
0
Max
76

UA 511 On-Time Performance Details

Overall Rating
0.8 of 5
Poor
Percentage On-Time 54%
Average Delay Time 53.166666666666664 min
FlightStats Rating is a merit measurement considering both on-time performance and delay severity. The score, 0.8 shows that this flight has on-time performance characteristics better than 14% of all other flights in the FlightStats database.
On-Time Performance Rating
0.3 of 5
Very Poor
Percentage On-Time 54%
This flight has an on-time performance of 54%. Statistically, when taking into consideration sample size, standard deviation, and mean, this flight is on-time more often than 7% of other flights.
Delay Performance
1.2 of 5
Poor
Average Delay Time 53.166666666666664 min
This flight has an average delay of 53.166666666666664 minutes with a standard deviation of 25.4 minutes. Statistically, when taking into consideration sample size, standard deviation, and mean, this flight has delay performance characteristics better than 24% of other flights.

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