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(UA) United Airlines 4558 On-Time Performance Rating

Date Range:

15-Jun-2026 to 15-Aug-2026

(ORD) Chicago O'Hare International Airport

Chicago, IL, US

(LEX) Blue Grass Airport

Lexington, KY, US

On-Time Performance Chart

(using rounded numbers)
On-Time
32
65%
Late
4
8%
Very Late
2
4%
Excessive
6
12%
Cancelled
3
6%
Diverted
2
4%

Delay Statistics

(Aggregate Arrival Delay Statistics for this Flight)

Total Flights Observed
47
Total Delays ( > 1 min )
22
Codeshares
47
Average Delay (min.)
28.59090909090909
Standard Deviation
28.2
Min
0
Max
93

UA 4558 On-Time Performance Details

Overall Rating
2.7 of 5
Average
Percentage On-Time 68%
Average Delay Time 28.59090909090909 min
FlightStats Rating is a merit measurement considering both on-time performance and delay severity. The score, 2.7 shows that this flight has on-time performance characteristics better than 52% of all other flights in the FlightStats database.
On-Time Performance Rating
1.4 of 5
Poor
Percentage On-Time 68%
This flight has an on-time performance of 68%. 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
3.9 of 5
Good
Average Delay Time 28.59090909090909 min
This flight has an average delay of 28.59090909090909 minutes with a standard deviation of 28.2 minutes. Statistically, when taking into consideration sample size, standard deviation, and mean, this flight has delay performance characteristics better than 79% of other flights.

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