(UA) United Airlines 4439 On-Time Performance Rating

Date Range:

15-Aug-2026 to 15-Oct-2026

(ORD) Chicago O'Hare International Airport

Chicago, IL, US

(GSO) Piedmont Triad International Airport

Greensboro/High Point, NC, US

On-Time Performance Chart

(using rounded numbers)

On-Time

43%

Late

Very Late

13%

Excessive

39%

Cancelled

Diverted

Delay Statistics

(Aggregate Arrival Delay Statistics for this Flight)

Total Flights Observed

Total Delays ( > 1 min )

Codeshares

Average Delay (min.)

77.33333333333333

Standard Deviation

57.2

Min

Max

208

UA 4439 On-Time Performance Details

Overall Rating

0.0 of 5

Very Poor

Percentage On-Time 44%

Average Delay Time 77.33333333333333 min

FlightStats Rating is a merit measurement considering both on-time performance and delay severity. The score, 0 shows that this flight has on-time performance characteristics better than 0% of all other flights in the FlightStats database.

On-Time Performance Rating

0.0 of 5

Very Poor

Percentage On-Time 44%

This flight has an on-time performance of 44%. Statistically, when taking into consideration sample size, standard deviation, and mean, this flight is on-time more often than 0% of other flights.

Delay Performance

0.0 of 5

Very Poor

Average Delay Time 77.33333333333333 min

This flight has an average delay of 77.33333333333333 minutes with a standard deviation of 57.2 minutes. Statistically, when taking into consideration sample size, standard deviation, and mean, this flight has delay performance characteristics better than 0% of other flights.