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(UA) United Airlines 4537 On-Time Performance Rating

Date Range:

01-Oct-2025 to 30-Nov-2025

(IAD) Washington Dulles International Airport

Dulles, VA, US

(BUF) Buffalo Niagara International Airport

Buffalo, NY, US

On-Time Performance Chart

(using rounded numbers)
On-Time
4
40%
Late
0
0%
Very Late
1
10%
Excessive
5
50%
Cancelled
0
0%
Diverted
0
0%

Delay Statistics

(Aggregate Arrival Delay Statistics for this Flight)

Total Flights Observed
10
Total Delays ( > 1 min )
8
Codeshares
10
Average Delay (min.)
90.125
Standard Deviation
80
Min
0
Max
243

UA 4537 On-Time Performance Details

Overall Rating
0.0 of 5
Very Poor
Percentage On-Time 40%
Average Delay Time 90.125 min
FlightStats Rating is a merit measurement considering both on-time performance and delay severity. The score, 0 shows that this flight has on-time performance characteristics better than 0% of all other flights in the FlightStats database.
On-Time Performance Rating
0.0 of 5
Very Poor
Percentage On-Time 40%
This flight has an on-time performance of 40%. Statistically, when taking into consideration sample size, standard deviation, and mean, this flight is on-time more often than 0% of other flights.
Delay Performance
0.0 of 5
Very Poor
Average Delay Time 90.125 min
This flight has an average delay of 90.125 minutes with a standard deviation of 80 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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