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(UA) United Airlines 4509 On-Time Performance Rating

Date Range:

15-Jul-2026 to 15-Sep-2026

(EWR) Newark Liberty International Airport

Newark, NJ, US

(GSO) Piedmont Triad International Airport

Greensboro/High Point, NC, US

On-Time Performance Chart

(using rounded numbers)
On-Time
11
48%
Late
1
4%
Very Late
1
4%
Excessive
2
9%
Cancelled
5
22%
Diverted
3
13%

Delay Statistics

(Aggregate Arrival Delay Statistics for this Flight)

Total Flights Observed
20
Total Delays ( > 1 min )
7
Codeshares
20
Average Delay (min.)
51.857142857142854
Standard Deviation
71.8
Min
0
Max
209

UA 4509 On-Time Performance Details

Overall Rating
0.6 of 5
Poor
Percentage On-Time 55%
Average Delay Time 51.857142857142854 min
FlightStats Rating is a merit measurement considering both on-time performance and delay severity. The score, 0.6 shows that this flight has on-time performance characteristics better than 11% of all other flights in the FlightStats database.
On-Time Performance Rating
0.1 of 5
Very Poor
Percentage On-Time 55%
This flight has an on-time performance of 55%. Statistically, when taking into consideration sample size, standard deviation, and mean, this flight is on-time more often than 3% of other flights.
Delay Performance
1.1 of 5
Poor
Average Delay Time 51.857142857142854 min
This flight has an average delay of 51.857142857142854 minutes with a standard deviation of 71.8 minutes. Statistically, when taking into consideration sample size, standard deviation, and mean, this flight has delay performance characteristics better than 21% of other flights.

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