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(UA) United Airlines 4523 On-Time Performance Rating

Date Range:

01-Sep-2026 to 31-Oct-2026

(ORD) Chicago O'Hare International Airport

Chicago, IL, US

(CHA) Chattanooga Metropolitan Airport

Chattanooga, TN, US

On-Time Performance Chart

(using rounded numbers)
On-Time
19
66%
Late
2
7%
Very Late
1
3%
Excessive
6
21%
Cancelled
0
0%
Diverted
1
3%

Delay Statistics

(Aggregate Arrival Delay Statistics for this Flight)

Total Flights Observed
29
Total Delays ( > 1 min )
10
Codeshares
29
Average Delay (min.)
48.1
Standard Deviation
31.4
Min
0
Max
120

UA 4523 On-Time Performance Details

Overall Rating
0.6 of 5
Poor
Percentage On-Time 66%
Average Delay Time 48.1 min
FlightStats Rating is a merit measurement considering both on-time performance and delay severity. The score, 0.6 shows that this flight has on-time performance characteristics better than 10% of all other flights in the FlightStats database.
On-Time Performance Rating
0.3 of 5
Very Poor
Percentage On-Time 66%
This flight has an on-time performance of 66%. Statistically, when taking into consideration sample size, standard deviation, and mean, this flight is on-time more often than 5% of other flights.
Delay Performance
0.8 of 5
Poor
Average Delay Time 48.1 min
This flight has an average delay of 48.1 minutes with a standard deviation of 31.4 minutes. Statistically, when taking into consideration sample size, standard deviation, and mean, this flight has delay performance characteristics better than 16% of other flights.

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