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(UA) United Airlines 4291 On-Time Performance Rating

Date Range:

01-Jan-2026 to 28-Feb-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
27
61%
Late
3
7%
Very Late
2
5%
Excessive
6
14%
Cancelled
5
11%
Diverted
1
2%

Delay Statistics

(Aggregate Arrival Delay Statistics for this Flight)

Total Flights Observed
43
Total Delays ( > 1 min )
22
Codeshares
43
Average Delay (min.)
51.04545454545455
Standard Deviation
73.1
Min
0
Max
294

UA 4291 On-Time Performance Details

Overall Rating
0.2 of 5
Very Poor
Percentage On-Time 63%
Average Delay Time 51.04545454545455 min
FlightStats Rating is a merit measurement considering both on-time performance and delay severity. The score, 0.2 shows that this flight has on-time performance characteristics better than 3% of all other flights in the FlightStats database.
On-Time Performance Rating
0.1 of 5
Very Poor
Percentage On-Time 63%
This flight has an on-time performance of 63%. Statistically, when taking into consideration sample size, standard deviation, and mean, this flight is on-time more often than 3% of other flights.
Delay Performance
0.3 of 5
Very Poor
Average Delay Time 51.04545454545455 min
This flight has an average delay of 51.04545454545455 minutes with a standard deviation of 73.1 minutes. Statistically, when taking into consideration sample size, standard deviation, and mean, this flight has delay performance characteristics better than 7% of other flights.

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