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(UA) United Airlines 4596 On-Time Performance Rating

Date Range:

15-Jul-2026 to 15-Sep-2026

(ROA) Roanoke-Blacksburg Regional Airport

Roanoke, VA, US

(IAD) Washington Dulles International Airport

Dulles, VA, US

On-Time Performance Chart

(using rounded numbers)
On-Time
5
56%
Late
0
0%
Very Late
0
0%
Excessive
3
33%
Cancelled
0
0%
Diverted
1
11%

Delay Statistics

(Aggregate Arrival Delay Statistics for this Flight)

Total Flights Observed
8
Total Delays ( > 1 min )
5
Codeshares
8
Average Delay (min.)
144.2
Standard Deviation
163.7
Min
0
Max
323

UA 4596 On-Time Performance Details

Overall Rating
0.5 of 5
Very Poor
Percentage On-Time 63%
Average Delay Time 144.2 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 63%
This flight has an on-time performance of 63%. 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 144.2 min
This flight has an average delay of 144.2 minutes with a standard deviation of 163.7 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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