background

(UA) United Airlines 4815 On-Time Performance Rating

Date Range:

15-Dec-2025 to 15-Feb-2026

(IAD) Washington Dulles International Airport

Dulles, VA, US

(CHO) Charlottesville Albemarle Airport

Charlottesville, VA, US

On-Time Performance Chart

(using rounded numbers)
On-Time
43
83%
Late
1
2%
Very Late
1
2%
Excessive
4
8%
Cancelled
3
6%
Diverted
0
0%

Delay Statistics

(Aggregate Arrival Delay Statistics for this Flight)

Total Flights Observed
52
Total Delays ( > 1 min )
15
Codeshares
52
Average Delay (min.)
53.266666666666666
Standard Deviation
83.8
Min
0
Max
236

UA 4815 On-Time Performance Details

Overall Rating
2.5 of 5
Average
Percentage On-Time 83%
Average Delay Time 53.266666666666666 min
FlightStats Rating is a merit measurement considering both on-time performance and delay severity. The score, 2.5 shows that this flight has on-time performance characteristics better than 48% of all other flights in the FlightStats database.
On-Time Performance Rating
4.5 of 5
Good
Percentage On-Time 83%
This flight has an on-time performance of 83%. Statistically, when taking into consideration sample size, standard deviation, and mean, this flight is on-time more often than 90% of other flights.
Delay Performance
0.4 of 5
Very Poor
Average Delay Time 53.266666666666666 min
This flight has an average delay of 53.266666666666666 minutes with a standard deviation of 83.8 minutes. Statistically, when taking into consideration sample size, standard deviation, and mean, this flight has delay performance characteristics better than 8% of other flights.