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(UA) United Airlines 4591 On-Time Performance Rating

Date Range:

01-Mar-2026 to 30-Apr-2026

(DCA) Ronald Reagan Washington National Airport

Washington, DC, US

(EWR) Newark Liberty International Airport

Newark, NJ, US

On-Time Performance Chart

(using rounded numbers)
On-Time
48
83%
Late
4
7%
Very Late
1
2%
Excessive
4
7%
Cancelled
0
0%
Diverted
1
2%

Delay Statistics

(Aggregate Arrival Delay Statistics for this Flight)

Total Flights Observed
57
Total Delays ( > 1 min )
13
Codeshares
57
Average Delay (min.)
50.07692307692308
Standard Deviation
76.6
Min
0
Max
290

UA 4591 On-Time Performance Details

Overall Rating
2.6 of 5
Average
Percentage On-Time 84%
Average Delay Time 50.07692307692308 min
FlightStats Rating is a merit measurement considering both on-time performance and delay severity. The score, 2.6 shows that this flight has on-time performance characteristics better than 50% of all other flights in the FlightStats database.
On-Time Performance Rating
4.4 of 5
Good
Percentage On-Time 84%
This flight has an on-time performance of 84%. Statistically, when taking into consideration sample size, standard deviation, and mean, this flight is on-time more often than 88% of other flights.
Delay Performance
0.7 of 5
Poor
Average Delay Time 50.07692307692308 min
This flight has an average delay of 50.07692307692308 minutes with a standard deviation of 76.6 minutes. Statistically, when taking into consideration sample size, standard deviation, and mean, this flight has delay performance characteristics better than 14% of other flights.

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