(UA) United Airlines 4457 On-Time Performance Rating

Date Range:

15-Feb-2026 to 15-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

88%

Late

12%

Very Late

Excessive

Cancelled

Diverted

Delay Statistics

(Aggregate Arrival Delay Statistics for this Flight)

Total Flights Observed

Total Delays ( > 1 min )

Codeshares

Average Delay (min.)

Standard Deviation

8.1

Min

Max

UA 4457 On-Time Performance Details

Overall Rating

4.0 of 5

Good

Percentage On-Time 88%

Average Delay Time 15 min

FlightStats Rating is a merit measurement considering both on-time performance and delay severity. The score, 4 shows that this flight has on-time performance characteristics better than 78% of all other flights in the FlightStats database.

On-Time Performance Rating

4.3 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 86% of other flights.

Delay Performance

3.6 of 5

Good

Average Delay Time 15 min

This flight has an average delay of 15 minutes with a standard deviation of 8.1 minutes. Statistically, when taking into consideration sample size, standard deviation, and mean, this flight has delay performance characteristics better than 73% of other flights.