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(UA) United Airlines 4181 On-Time Performance Rating

Date Range:

01-Jan-2026 to 28-Feb-2026

(BTV) Patrick Leahy Burlington International Airport

Burlington, VT, US

(IAD) Washington Dulles International Airport

Dulles, VA, US

On-Time Performance Chart

(using rounded numbers)
On-Time
22
71%
Late
2
6%
Very Late
1
3%
Excessive
4
13%
Cancelled
2
6%
Diverted
0
0%

Delay Statistics

(Aggregate Arrival Delay Statistics for this Flight)

Total Flights Observed
31
Total Delays ( > 1 min )
8
Codeshares
31
Average Delay (min.)
85.375
Standard Deviation
80.8
Min
0
Max
232

UA 4181 On-Time Performance Details

Overall Rating
0.7 of 5
Poor
Percentage On-Time 71%
Average Delay Time 85.375 min
FlightStats Rating is a merit measurement considering both on-time performance and delay severity. The score, 0.7 shows that this flight has on-time performance characteristics better than 13% of all other flights in the FlightStats database.
On-Time Performance Rating
1.4 of 5
Poor
Percentage On-Time 71%
This flight has an on-time performance of 71%. Statistically, when taking into consideration sample size, standard deviation, and mean, this flight is on-time more often than 27% of other flights.
Delay Performance
0.0 of 5
Very Poor
Average Delay Time 85.375 min
This flight has an average delay of 85.375 minutes with a standard deviation of 80.8 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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