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(UA) United Airlines 4335 On-Time Performance Rating

Date Range:

01-Mar-2025 to 30-Apr-2025

(IAD) Washington Dulles International Airport

Dulles, VA, US

(BUF) Buffalo Niagara International Airport

Buffalo, NY, US

On-Time Performance Chart

(using rounded numbers)
On-Time
47
92%
Late
1
2%
Very Late
0
0%
Excessive
2
4%
Cancelled
1
2%
Diverted
0
0%

Delay Statistics

(Aggregate Arrival Delay Statistics for this Flight)

Total Flights Observed
51
Total Delays ( > 1 min )
16
Codeshares
51
Average Delay (min.)
13.9375
Standard Deviation
20.8
Min
0
Max
77

UA 4335 On-Time Performance Details

Overall Rating
4.8 of 5
Very Good
Percentage On-Time 92%
Average Delay Time 13.9375 min
FlightStats Rating is a merit measurement considering both on-time performance and delay severity. The score, 4.8 shows that this flight has on-time performance characteristics better than 94% of all other flights in the FlightStats database.
On-Time Performance Rating
5.0 of 5
Very Good
Percentage On-Time 92%
This flight has an on-time performance of 92%. 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
4.5 of 5
Good
Average Delay Time 13.9375 min
This flight has an average delay of 13.9375 minutes with a standard deviation of 20.8 minutes. Statistically, when taking into consideration sample size, standard deviation, and mean, this flight has delay performance characteristics better than 90% of other flights.