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(UA) United Airlines 4230 On-Time Performance Rating

Date Range:

15-Dec-2025 to 15-Feb-2026

(BTV) Patrick Leahy Burlington International Airport

Burlington, VT, US

(IAD) Washington Dulles International Airport

Dulles, VA, US

On-Time Performance Chart

(using rounded numbers)
On-Time
9
47%
Late
2
11%
Very Late
2
11%
Excessive
6
32%
Cancelled
0
0%
Diverted
0
0%

Delay Statistics

(Aggregate Arrival Delay Statistics for this Flight)

Total Flights Observed
19
Total Delays ( > 1 min )
15
Codeshares
19
Average Delay (min.)
77.86666666666666
Standard Deviation
110.9
Min
0
Max
337

UA 4230 On-Time Performance Details

Overall Rating
0.0 of 5
Very Poor
Percentage On-Time 47%
Average Delay Time 77.86666666666666 min
FlightStats Rating is a merit measurement considering both on-time performance and delay severity. The score, 0 shows that this flight has on-time performance characteristics better than 0% of all other flights in the FlightStats database.
On-Time Performance Rating
0.0 of 5
Very Poor
Percentage On-Time 47%
This flight has an on-time performance of 47%. Statistically, when taking into consideration sample size, standard deviation, and mean, this flight is on-time more often than 0% of other flights.
Delay Performance
0.0 of 5
Very Poor
Average Delay Time 77.86666666666666 min
This flight has an average delay of 77.86666666666666 minutes with a standard deviation of 110.9 minutes. Statistically, when taking into consideration sample size, standard deviation, and mean, this flight has delay performance characteristics better than 0% of other flights.

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