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(UA) United Airlines 4599 On-Time Performance Rating

Date Range:

01-Jun-2026 to 31-Jul-2026

(EWR) Newark Liberty International Airport

Newark, NJ, US

(DCA) Ronald Reagan Washington National Airport

Washington, DC, US

On-Time Performance Chart

(using rounded numbers)
On-Time
15
88%
Late
0
0%
Very Late
0
0%
Excessive
2
12%
Cancelled
0
0%
Diverted
0
0%

Delay Statistics

(Aggregate Arrival Delay Statistics for this Flight)

Total Flights Observed
17
Total Delays ( > 1 min )
5
Codeshares
17
Average Delay (min.)
32.2
Standard Deviation
36.9
Min
0
Max
85

UA 4599 On-Time Performance Details

Overall Rating
3.8 of 5
Good
Percentage On-Time 88%
Average Delay Time 32.2 min
FlightStats Rating is a merit measurement considering both on-time performance and delay severity. The score, 3.8 shows that this flight has on-time performance characteristics better than 75% of all other flights in the FlightStats database.
On-Time Performance Rating
4.7 of 5
Very Good
Percentage On-Time 88%
This flight has an on-time performance of 88%. Statistically, when taking into consideration sample size, standard deviation, and mean, this flight is on-time more often than 93% of other flights.
Delay Performance
2.9 of 5
Average
Average Delay Time 32.2 min
This flight has an average delay of 32.2 minutes with a standard deviation of 36.9 minutes. Statistically, when taking into consideration sample size, standard deviation, and mean, this flight has delay performance characteristics better than 58% of other flights.

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