background

(UA) United Airlines 4239 On-Time Performance Rating

Date Range:

01-Jul-2026 to 31-Aug-2026

(IAD) Washington Dulles International Airport

Dulles, VA, US

(AVP) Wilkes-Barre Scranton International Airport

Wilkes-Barre, PA, US

On-Time Performance Chart

(using rounded numbers)
On-Time
18
90%
Late
0
0%
Very Late
0
0%
Excessive
1
5%
Cancelled
0
0%
Diverted
1
5%

Delay Statistics

(Aggregate Arrival Delay Statistics for this Flight)

Total Flights Observed
19
Total Delays ( > 1 min )
2
Codeshares
19
Average Delay (min.)
63
Standard Deviation
70.7
Min
0
Max
113

UA 4239 On-Time Performance Details

Overall Rating
3.2 of 5
Average
Percentage On-Time 95%
Average Delay Time 63 min
FlightStats Rating is a merit measurement considering both on-time performance and delay severity. The score, 3.2 shows that this flight has on-time performance characteristics better than 62% of all other flights in the FlightStats database.
On-Time Performance Rating
4.9 of 5
Very Good
Percentage On-Time 95%
This flight has an on-time performance of 95%. Statistically, when taking into consideration sample size, standard deviation, and mean, this flight is on-time more often than 99% of other flights.
Delay Performance
1.4 of 5
Poor
Average Delay Time 63 min
This flight has an average delay of 63 minutes with a standard deviation of 70.7 minutes. Statistically, when taking into consideration sample size, standard deviation, and mean, this flight has delay performance characteristics better than 27% of other flights.

Other Stops for UA 4239