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(UA) United Airlines 4533 On-Time Performance Rating

Date Range:

15-Mar-2026 to 15-May-2026

(ORD) Chicago O'Hare International Airport

Chicago, IL, US

(ROA) Roanoke-Blacksburg Regional Airport

Roanoke, VA, US

On-Time Performance Chart

(using rounded numbers)
On-Time
21
72%
Late
1
3%
Very Late
1
3%
Excessive
6
21%
Cancelled
0
0%
Diverted
0
0%

Delay Statistics

(Aggregate Arrival Delay Statistics for this Flight)

Total Flights Observed
29
Total Delays ( > 1 min )
10
Codeshares
29
Average Delay (min.)
99.9
Standard Deviation
103.9
Min
0
Max
287

UA 4533 On-Time Performance Details

Overall Rating
0.5 of 5
Very Poor
Percentage On-Time 72%
Average Delay Time 99.9 min
FlightStats Rating is a merit measurement considering both on-time performance and delay severity. The score, 0.5 shows that this flight has on-time performance characteristics better than 8% of all other flights in the FlightStats database.
On-Time Performance Rating
0.9 of 5
Poor
Percentage On-Time 72%
This flight has an on-time performance of 72%. Statistically, when taking into consideration sample size, standard deviation, and mean, this flight is on-time more often than 18% of other flights.
Delay Performance
0.0 of 5
Very Poor
Average Delay Time 99.9 min
This flight has an average delay of 99.9 minutes with a standard deviation of 103.9 minutes. Statistically, when taking into consideration sample size, standard deviation, and mean, this flight has delay performance characteristics better than 0% of other flights.

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