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(UA) United Airlines 4576 On-Time Performance Rating

Date Range:

15-Jul-2026 to 15-Sep-2026

(ORD) Chicago O'Hare International Airport

Chicago, IL, US

(STL) St Louis Lambert International Airport

Saint Louis, MO, US

On-Time Performance Chart

(using rounded numbers)
On-Time
32
59%
Late
7
13%
Very Late
3
6%
Excessive
9
17%
Cancelled
2
4%
Diverted
1
2%

Delay Statistics

(Aggregate Arrival Delay Statistics for this Flight)

Total Flights Observed
53
Total Delays ( > 1 min )
26
Codeshares
53
Average Delay (min.)
64.11538461538461
Standard Deviation
120.9
Min
0
Max
614

UA 4576 On-Time Performance Details

Overall Rating
0.1 of 5
Very Poor
Percentage On-Time 60%
Average Delay Time 64.11538461538461 min
FlightStats Rating is a merit measurement considering both on-time performance and delay severity. The score, 0.1 shows that this flight has on-time performance characteristics better than 0% of all other flights in the FlightStats database.
On-Time Performance Rating
0.1 of 5
Very Poor
Percentage On-Time 60%
This flight has an on-time performance of 60%. Statistically, when taking into consideration sample size, standard deviation, and mean, this flight is on-time more often than 1% of other flights.
Delay Performance
0.0 of 5
Very Poor
Average Delay Time 64.11538461538461 min
This flight has an average delay of 64.11538461538461 minutes with a standard deviation of 120.9 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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