(UA) United Airlines 4476 On-Time Performance Rating

Date Range:

01-May-2026 to 30-Jun-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

78%

Late

Very Late

Excessive

11%

Cancelled

Diverted

Delay Statistics

(Aggregate Arrival Delay Statistics for this Flight)

Total Flights Observed

Total Delays ( > 1 min )

Codeshares

Average Delay (min.)

57.54545454545455

Standard Deviation

80.5

Min

Max

270

UA 4476 On-Time Performance Details

Overall Rating

2.0 of 5

Average

Percentage On-Time 81%

Average Delay Time 57.54545454545455 min

FlightStats Rating is a merit measurement considering both on-time performance and delay severity. The score, 2 shows that this flight has on-time performance characteristics better than 38% of all other flights in the FlightStats database.

On-Time Performance Rating

3.5 of 5

Average

Percentage On-Time 81%

This flight has an on-time performance of 81%. Statistically, when taking into consideration sample size, standard deviation, and mean, this flight is on-time more often than 69% of other flights.

Delay Performance

0.4 of 5

Very Poor

Average Delay Time 57.54545454545455 min

This flight has an average delay of 57.54545454545455 minutes with a standard deviation of 80.5 minutes. Statistically, when taking into consideration sample size, standard deviation, and mean, this flight has delay performance characteristics better than 8% of other flights.