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(UA) United Airlines 4459 On-Time Performance Rating

Date Range:

15-Dec-2025 to 15-Feb-2026

(EWR) Newark Liberty International Airport

Newark, NJ, US

(BUF) Buffalo Niagara International Airport

Buffalo, NY, US

On-Time Performance Chart

(using rounded numbers)
On-Time
27
68%
Late
2
5%
Very Late
2
5%
Excessive
7
18%
Cancelled
2
5%
Diverted
0
0%

Delay Statistics

(Aggregate Arrival Delay Statistics for this Flight)

Total Flights Observed
40
Total Delays ( > 1 min )
13
Codeshares
40
Average Delay (min.)
84.3076923076923
Standard Deviation
70.6
Min
0
Max
214

UA 4459 On-Time Performance Details

Overall Rating
0.5 of 5
Very Poor
Percentage On-Time 68%
Average Delay Time 84.3076923076923 min
FlightStats Rating is a merit measurement considering both on-time performance and delay severity. The score, 0.5 shows that this flight has on-time performance characteristics better than 8% of all other flights in the FlightStats database.
On-Time Performance Rating
0.9 of 5
Poor
Percentage On-Time 68%
This flight has an on-time performance of 68%. Statistically, when taking into consideration sample size, standard deviation, and mean, this flight is on-time more often than 18% of other flights.
Delay Performance
0.0 of 5
Very Poor
Average Delay Time 84.3076923076923 min
This flight has an average delay of 84.3076923076923 minutes with a standard deviation of 70.6 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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