(UA) United Airlines 4397 On-Time Performance Rating

Date Range:

15-Oct-2025 to 15-Dec-2025

(EWR) Newark Liberty International Airport

Newark, NJ, US

(PWM) Portland International Jetport

Portland, ME, US

On-Time Performance Chart

(using rounded numbers)

On-Time

79%

Late

Very Late

Excessive

14%

Cancelled

Diverted

Delay Statistics

(Aggregate Arrival Delay Statistics for this Flight)

Total Flights Observed

Total Delays ( > 1 min )

Codeshares

Average Delay (min.)

61.666666666666664

Standard Deviation

66.3

Min

Max

133

UA 4397 On-Time Performance Details

Overall Rating

2.4 of 5

Average

Percentage On-Time 85%

Average Delay Time 61.666666666666664 min

FlightStats Rating is a merit measurement considering both on-time performance and delay severity. The score, 2.4 shows that this flight has on-time performance characteristics better than 47% of all other flights in the FlightStats database.

On-Time Performance Rating

3.9 of 5

Good

Percentage On-Time 85%

This flight has an on-time performance of 85%. Statistically, when taking into consideration sample size, standard deviation, and mean, this flight is on-time more often than 79% of other flights.

Delay Performance

0.9 of 5

Poor

Average Delay Time 61.666666666666664 min

This flight has an average delay of 61.666666666666664 minutes with a standard deviation of 66.3 minutes. Statistically, when taking into consideration sample size, standard deviation, and mean, this flight has delay performance characteristics better than 18% of other flights.