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(UA) United Airlines 4599 On-Time Performance Rating

Date Range:

01-Sep-2025 to 31-Oct-2025

(ORD) Chicago O'Hare International Airport

Chicago, IL, US

(BHM) Birmingham-Shuttlesworth International Airport

Birmingham, AL, US

On-Time Performance Chart

(using rounded numbers)
On-Time
44
75%
Late
4
7%
Very Late
1
2%
Excessive
10
17%
Cancelled
0
0%
Diverted
0
0%

Delay Statistics

(Aggregate Arrival Delay Statistics for this Flight)

Total Flights Observed
59
Total Delays ( > 1 min )
27
Codeshares
59
Average Delay (min.)
60.666666666666664
Standard Deviation
150.5
Min
0
Max
797

UA 4599 On-Time Performance Details

Overall Rating
0.8 of 5
Poor
Percentage On-Time 75%
Average Delay Time 60.666666666666664 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
1.5 of 5
Poor
Percentage On-Time 75%
This flight has an on-time performance of 75%. Statistically, when taking into consideration sample size, standard deviation, and mean, this flight is on-time more often than 31% of other flights.
Delay Performance
0.0 of 5
Very Poor
Average Delay Time 60.666666666666664 min
This flight has an average delay of 60.666666666666664 minutes with a standard deviation of 150.5 minutes. Statistically, when taking into consideration sample size, standard deviation, and mean, this flight has delay performance characteristics better than 0% of other flights.