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(UA) United Airlines 4291 On-Time Performance Rating

Date Range:

01-Aug-2026 to 30-Sep-2026

(BUF) Buffalo Niagara International Airport

Buffalo, NY, US

(IAD) Washington Dulles International Airport

Dulles, VA, US

On-Time Performance Chart

(using rounded numbers)
On-Time
43
77%
Late
3
5%
Very Late
2
4%
Excessive
7
13%
Cancelled
0
0%
Diverted
1
2%

Delay Statistics

(Aggregate Arrival Delay Statistics for this Flight)

Total Flights Observed
55
Total Delays ( > 1 min )
21
Codeshares
55
Average Delay (min.)
45.23809523809524
Standard Deviation
57
Min
0
Max
233

UA 4291 On-Time Performance Details

Overall Rating
2.3 of 5
Average
Percentage On-Time 78%
Average Delay Time 45.23809523809524 min
FlightStats Rating is a merit measurement considering both on-time performance and delay severity. The score, 2.3 shows that this flight has on-time performance characteristics better than 44% of all other flights in the FlightStats database.
On-Time Performance Rating
3.6 of 5
Good
Percentage On-Time 78%
This flight has an on-time performance of 78%. Statistically, when taking into consideration sample size, standard deviation, and mean, this flight is on-time more often than 73% of other flights.
Delay Performance
0.9 of 5
Poor
Average Delay Time 45.23809523809524 min
This flight has an average delay of 45.23809523809524 minutes with a standard deviation of 57 minutes. Statistically, when taking into consideration sample size, standard deviation, and mean, this flight has delay performance characteristics better than 18% of other flights.

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