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(UA) United Airlines 4459 On-Time Performance Rating

Date Range:

01-Feb-2026 to 31-Mar-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
37
71%
Late
5
10%
Very Late
0
0%
Excessive
7
13%
Cancelled
3
6%
Diverted
0
0%

Delay Statistics

(Aggregate Arrival Delay Statistics for this Flight)

Total Flights Observed
52
Total Delays ( > 1 min )
18
Codeshares
52
Average Delay (min.)
64.83333333333333
Standard Deviation
73
Min
0
Max
220

UA 4459 On-Time Performance Details

Overall Rating
0.5 of 5
Very Poor
Percentage On-Time 71%
Average Delay Time 64.83333333333333 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
0.8 of 5
Poor
Percentage On-Time 71%
This flight has an on-time performance of 71%. Statistically, when taking into consideration sample size, standard deviation, and mean, this flight is on-time more often than 16% of other flights.
Delay Performance
0.1 of 5
Very Poor
Average Delay Time 64.83333333333333 min
This flight has an average delay of 64.83333333333333 minutes with a standard deviation of 73 minutes. Statistically, when taking into consideration sample size, standard deviation, and mean, this flight has delay performance characteristics better than 1% of other flights.

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