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(UA) United Airlines 4291 On-Time Performance Rating

Date Range:

15-Jun-2026 to 15-Aug-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
31
70%
Late
1
2%
Very Late
4
9%
Excessive
4
9%
Cancelled
3
7%
Diverted
1
2%

Delay Statistics

(Aggregate Arrival Delay Statistics for this Flight)

Total Flights Observed
43
Total Delays ( > 1 min )
13
Codeshares
43
Average Delay (min.)
42.46153846153846
Standard Deviation
40.2
Min
0
Max
133

UA 4291 On-Time Performance Details

Overall Rating
2.3 of 5
Average
Percentage On-Time 72%
Average Delay Time 42.46153846153846 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 45% of all other flights in the FlightStats database.
On-Time Performance Rating
2.7 of 5
Average
Percentage On-Time 72%
This flight has an on-time performance of 72%. Statistically, when taking into consideration sample size, standard deviation, and mean, this flight is on-time more often than 54% of other flights.
Delay Performance
1.9 of 5
Average
Average Delay Time 42.46153846153846 min
This flight has an average delay of 42.46153846153846 minutes with a standard deviation of 40.2 minutes. Statistically, when taking into consideration sample size, standard deviation, and mean, this flight has delay performance characteristics better than 38% of other flights.

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