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(UA) United Airlines 4877 On-Time Performance Rating

Date Range:

01-May-2025 to 30-Jun-2025

(IAD) Washington Dulles International Airport

Dulles, VA, US

(ROC) Frederick Douglass Greater Rochester Intl Airport

Rochester, NY, US

On-Time Performance Chart

(using rounded numbers)
On-Time
16
70%
Late
3
13%
Very Late
0
0%
Excessive
3
13%
Cancelled
1
4%
Diverted
0
0%

Delay Statistics

(Aggregate Arrival Delay Statistics for this Flight)

Total Flights Observed
23
Total Delays ( > 1 min )
10
Codeshares
23
Average Delay (min.)
72.5
Standard Deviation
115.8
Min
0
Max
344

UA 4877 On-Time Performance Details

Overall Rating
0.9 of 5
Poor
Percentage On-Time 70%
Average Delay Time 72.5 min
FlightStats Rating is a merit measurement considering both on-time performance and delay severity. The score, 0.9 shows that this flight has on-time performance characteristics better than 17% of all other flights in the FlightStats database.
On-Time Performance Rating
1.7 of 5
Average
Percentage On-Time 70%
This flight has an on-time performance of 70%. Statistically, when taking into consideration sample size, standard deviation, and mean, this flight is on-time more often than 34% of other flights.
Delay Performance
0.1 of 5
Very Poor
Average Delay Time 72.5 min
This flight has an average delay of 72.5 minutes with a standard deviation of 115.8 minutes. Statistically, when taking into consideration sample size, standard deviation, and mean, this flight has delay performance characteristics better than 2% of other flights.

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