background

(UA) United Airlines 4477 On-Time Performance Rating

Date Range:

01-Mar-2026 to 30-Apr-2026

(PWM) Portland International Jetport

Portland, ME, US

(EWR) Newark Liberty International Airport

Newark, NJ, US

On-Time Performance Chart

(using rounded numbers)
On-Time
28
85%
Late
1
3%
Very Late
0
0%
Excessive
3
9%
Cancelled
0
0%
Diverted
1
3%

Delay Statistics

(Aggregate Arrival Delay Statistics for this Flight)

Total Flights Observed
32
Total Delays ( > 1 min )
8
Codeshares
32
Average Delay (min.)
47.375
Standard Deviation
65
Min
0
Max
197

UA 4477 On-Time Performance Details

Overall Rating
2.8 of 5
Average
Percentage On-Time 88%
Average Delay Time 47.375 min
FlightStats Rating is a merit measurement considering both on-time performance and delay severity. The score, 2.8 shows that this flight has on-time performance characteristics better than 55% of all other flights in the FlightStats database.
On-Time Performance Rating
4.5 of 5
Good
Percentage On-Time 88%
This flight has an on-time performance of 88%. Statistically, when taking into consideration sample size, standard deviation, and mean, this flight is on-time more often than 90% of other flights.
Delay Performance
1.1 of 5
Poor
Average Delay Time 47.375 min
This flight has an average delay of 47.375 minutes with a standard deviation of 65 minutes. Statistically, when taking into consideration sample size, standard deviation, and mean, this flight has delay performance characteristics better than 21% of other flights.

Other Stops for UA 4477