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(UA) United Airlines 4481 On-Time Performance Rating

Date Range:

01-Jan-2026 to 28-Feb-2026

(PWM) Portland International Jetport

Portland, ME, US

(IAD) Washington Dulles International Airport

Dulles, VA, US

On-Time Performance Chart

(using rounded numbers)
On-Time
35
64%
Late
4
7%
Very Late
5
9%
Excessive
8
15%
Cancelled
3
5%
Diverted
0
0%

Delay Statistics

(Aggregate Arrival Delay Statistics for this Flight)

Total Flights Observed
55
Total Delays ( > 1 min )
21
Codeshares
55
Average Delay (min.)
55.23809523809524
Standard Deviation
50.8
Min
0
Max
179

UA 4481 On-Time Performance Details

Overall Rating
0.2 of 5
Very Poor
Percentage On-Time 64%
Average Delay Time 55.23809523809524 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 2% of all other flights in the FlightStats database.
On-Time Performance Rating
0.1 of 5
Very Poor
Percentage On-Time 64%
This flight has an on-time performance of 64%. Statistically, when taking into consideration sample size, standard deviation, and mean, this flight is on-time more often than 2% of other flights.
Delay Performance
0.2 of 5
Very Poor
Average Delay Time 55.23809523809524 min
This flight has an average delay of 55.23809523809524 minutes with a standard deviation of 50.8 minutes. Statistically, when taking into consideration sample size, standard deviation, and mean, this flight has delay performance characteristics better than 4% of other flights.

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