(UA) United Airlines 439 On-Time Performance Rating

Date Range:

15-May-2026 to 15-Jul-2026

(AUS) Austin-Bergstrom International Airport

Austin, TX, US

(DEN) Denver International Airport

Denver, CO, US

On-Time Performance Chart

(using rounded numbers)

On-Time

66%

Late

20%

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.)

28.20689655172414

Standard Deviation

26.4

Min

Max

UA 439 On-Time Performance Details

Overall Rating

2.1 of 5

Average

Percentage On-Time 66%

Average Delay Time 28.20689655172414 min

FlightStats Rating is a merit measurement considering both on-time performance and delay severity. The score, 2.1 shows that this flight has on-time performance characteristics better than 40% of all other flights in the FlightStats database.

On-Time Performance Rating

0.3 of 5

Very Poor

Percentage On-Time 66%

This flight has an on-time performance of 66%. Statistically, when taking into consideration sample size, standard deviation, and mean, this flight is on-time more often than 7% of other flights.

Delay Performance

3.8 of 5

Good

Average Delay Time 28.20689655172414 min

This flight has an average delay of 28.20689655172414 minutes with a standard deviation of 26.4 minutes. Statistically, when taking into consideration sample size, standard deviation, and mean, this flight has delay performance characteristics better than 76% of other flights.