(UA) United Airlines 4439 On-Time Performance Rating

Date Range:

15-Aug-2026 to 15-Oct-2026

(IAH) Houston George Bush Intercontinental Airport

Houston, TX, US

(HSV) Huntsville International Airport

Huntsville, AL, US

On-Time Performance Chart

(using rounded numbers)

On-Time

92%

Late

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.)

57.5

Standard Deviation

61.5

Min

Max

101

UA 4439 On-Time Performance Details

Overall Rating

2.9 of 5

Average

Percentage On-Time 92%

Average Delay Time 57.5 min

FlightStats Rating is a merit measurement considering both on-time performance and delay severity. The score, 2.9 shows that this flight has on-time performance characteristics better than 57% of all other flights in the FlightStats database.

On-Time Performance Rating

4.6 of 5

Very Good

Percentage On-Time 92%

This flight has an on-time performance of 92%. 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

1.2 of 5

Poor

Average Delay Time 57.5 min

This flight has an average delay of 57.5 minutes with a standard deviation of 61.5 minutes. Statistically, when taking into consideration sample size, standard deviation, and mean, this flight has delay performance characteristics better than 24% of other flights.