(UA) United Airlines 4439 On-Time Performance Rating

Date Range:

15-Apr-2026 to 15-Jun-2026

(EWR) Newark Liberty International Airport

Newark, NJ, US

(ROC) Frederick Douglass Greater Rochester Intl Airport

Rochester, NY, US

On-Time Performance Chart

(using rounded numbers)

On-Time

77%

Late

Very Late

Excessive

15%

Cancelled

Diverted

Delay Statistics

(Aggregate Arrival Delay Statistics for this Flight)

Total Flights Observed

Total Delays ( > 1 min )

Codeshares

Average Delay (min.)

77.25

Standard Deviation

91.5

Min

Max

213

UA 4439 On-Time Performance Details

Overall Rating

1.2 of 5

Poor

Percentage On-Time 77%

Average Delay Time 77.25 min

FlightStats Rating is a merit measurement considering both on-time performance and delay severity. The score, 1.2 shows that this flight has on-time performance characteristics better than 23% of all other flights in the FlightStats database.

On-Time Performance Rating

2.1 of 5

Average

Percentage On-Time 77%

This flight has an on-time performance of 77%. Statistically, when taking into consideration sample size, standard deviation, and mean, this flight is on-time more often than 42% of other flights.

Delay Performance

0.3 of 5

Very Poor

Average Delay Time 77.25 min

This flight has an average delay of 77.25 minutes with a standard deviation of 91.5 minutes. Statistically, when taking into consideration sample size, standard deviation, and mean, this flight has delay performance characteristics better than 5% of other flights.