background

(UA) United Airlines 4339 On-Time Performance Rating

Date Range:

01-Aug-2025 to 30-Sep-2025

(IAD) Washington Dulles International Airport

Dulles, VA, US

(ROA) Roanoke-Blacksburg Regional Airport

Roanoke, VA, US

On-Time Performance Chart

(using rounded numbers)
On-Time
51
82%
Late
2
3%
Very Late
2
3%
Excessive
6
10%
Cancelled
0
0%
Diverted
1
2%

Delay Statistics

(Aggregate Arrival Delay Statistics for this Flight)

Total Flights Observed
61
Total Delays ( > 1 min )
29
Codeshares
61
Average Delay (min.)
54.10344827586207
Standard Deviation
153.8
Min
0
Max
830

UA 4339 On-Time Performance Details

Overall Rating
2.4 of 5
Average
Percentage On-Time 84%
Average Delay Time 54.10344827586207 min
FlightStats Rating is a merit measurement considering both on-time performance and delay severity. The score, 2.4 shows that this flight has on-time performance characteristics better than 47% of all other flights in the FlightStats database.
On-Time Performance Rating
4.7 of 5
Very 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 95% of other flights.
Delay Performance
0.1 of 5
Very Poor
Average Delay Time 54.10344827586207 min
This flight has an average delay of 54.10344827586207 minutes with a standard deviation of 153.8 minutes. Statistically, when taking into consideration sample size, standard deviation, and mean, this flight has delay performance characteristics better than 2% of other flights.