(UA) United Airlines 4389 On-Time Performance Rating

Date Range:

01-Jul-2026 to 31-Aug-2026

(ORD) Chicago O'Hare International Airport

Chicago, IL, US

(ROC) Frederick Douglass Greater Rochester Intl Airport

Rochester, NY, US

On-Time Performance Chart

(using rounded numbers)

On-Time

88%

Late

Very Late

Excessive

12%

Cancelled

Diverted

Delay Statistics

(Aggregate Arrival Delay Statistics for this Flight)

Total Flights Observed

Total Delays ( > 1 min )

Codeshares

Average Delay (min.)

79.66666666666667

Standard Deviation

93.2

Min

Max

185

UA 4389 On-Time Performance Details

Overall Rating

2.6 of 5

Average

Percentage On-Time 88%

Average Delay Time 79.66666666666667 min

FlightStats Rating is a merit measurement considering both on-time performance and delay severity. The score, 2.6 shows that this flight has on-time performance characteristics better than 50% of all other flights in the FlightStats database.

On-Time Performance Rating

4.6 of 5

Very 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 92% of other flights.

Delay Performance

0.5 of 5

Very Poor

Average Delay Time 79.66666666666667 min

This flight has an average delay of 79.66666666666667 minutes with a standard deviation of 93.2 minutes. Statistically, when taking into consideration sample size, standard deviation, and mean, this flight has delay performance characteristics better than 10% of other flights.