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(UA) United Airlines 4451 On-Time Performance Rating

Date Range:

15-Aug-2026 to 15-Oct-2026

(IAD) Washington Dulles International Airport

Dulles, VA, US

(BTV) Patrick Leahy Burlington International Airport

Burlington, VT, US

On-Time Performance Chart

(using rounded numbers)
On-Time
48
79%
Late
1
2%
Very Late
3
5%
Excessive
8
13%
Cancelled
0
0%
Diverted
1
2%

Delay Statistics

(Aggregate Arrival Delay Statistics for this Flight)

Total Flights Observed
60
Total Delays ( > 1 min )
22
Codeshares
60
Average Delay (min.)
80.68181818181819
Standard Deviation
102.2
Min
0
Max
358

UA 4451 On-Time Performance Details

Overall Rating
1.9 of 5
Average
Percentage On-Time 80%
Average Delay Time 80.68181818181819 min
FlightStats Rating is a merit measurement considering both on-time performance and delay severity. The score, 1.9 shows that this flight has on-time performance characteristics better than 37% of all other flights in the FlightStats database.
On-Time Performance Rating
3.8 of 5
Good
Percentage On-Time 80%
This flight has an on-time performance of 80%. Statistically, when taking into consideration sample size, standard deviation, and mean, this flight is on-time more often than 76% of other flights.
Delay Performance
0.0 of 5
Very Poor
Average Delay Time 80.68181818181819 min
This flight has an average delay of 80.68181818181819 minutes with a standard deviation of 102.2 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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