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(UA) United Airlines 4255 On-Time Performance Rating

Date Range:

15-Feb-2026 to 15-Apr-2026

(IAD) Washington Dulles International Airport

Dulles, VA, US

(ORF) Norfolk International Airport

Norfolk, VA, US

On-Time Performance Chart

(using rounded numbers)
On-Time
15
63%
Late
3
13%
Very Late
3
13%
Excessive
1
4%
Cancelled
2
8%
Diverted
0
0%

Delay Statistics

(Aggregate Arrival Delay Statistics for this Flight)

Total Flights Observed
24
Total Delays ( > 1 min )
10
Codeshares
24
Average Delay (min.)
25.5
Standard Deviation
17.8
Min
0
Max
52

UA 4255 On-Time Performance Details

Overall Rating
1.8 of 5
Average
Percentage On-Time 63%
Average Delay Time 25.5 min
FlightStats Rating is a merit measurement considering both on-time performance and delay severity. The score, 1.8 shows that this flight has on-time performance characteristics better than 34% of all other flights in the FlightStats database.
On-Time Performance Rating
0.2 of 5
Very Poor
Percentage On-Time 63%
This flight has an on-time performance of 63%. Statistically, when taking into consideration sample size, standard deviation, and mean, this flight is on-time more often than 4% of other flights.
Delay Performance
3.3 of 5
Average
Average Delay Time 25.5 min
This flight has an average delay of 25.5 minutes with a standard deviation of 17.8 minutes. Statistically, when taking into consideration sample size, standard deviation, and mean, this flight has delay performance characteristics better than 66% of other flights.

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