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(UA) United Airlines 644 On-Time Performance Rating

Date Range:

01-Aug-2025 to 30-Sep-2025

(MIA) Miami International Airport

Miami, FL, US

(DEN) Denver International Airport

Denver, CO, US

On-Time Performance Chart

(using rounded numbers)
On-Time
14
82%
Late
2
12%
Very Late
0
0%
Excessive
1
6%
Cancelled
0
0%
Diverted
0
0%

Delay Statistics

(Aggregate Arrival Delay Statistics for this Flight)

Total Flights Observed
17
Total Delays ( > 1 min )
7
Codeshares
0
Average Delay (min.)
14.285714285714286
Standard Deviation
15.6
Min
0
Max
47

UA 644 On-Time Performance Details

Overall Rating
4.0 of 5
Good
Percentage On-Time 82%
Average Delay Time 14.285714285714286 min
FlightStats Rating is a merit measurement considering both on-time performance and delay severity. The score, 4 shows that this flight has on-time performance characteristics better than 78% of all other flights in the FlightStats database.
On-Time Performance Rating
3.8 of 5
Good
Percentage On-Time 82%
This flight has an on-time performance of 82%. Statistically, when taking into consideration sample size, standard deviation, and mean, this flight is on-time more often than 76% of other flights.
Delay Performance
4.1 of 5
Good
Average Delay Time 14.285714285714286 min
This flight has an average delay of 14.285714285714286 minutes with a standard deviation of 15.6 minutes. Statistically, when taking into consideration sample size, standard deviation, and mean, this flight has delay performance characteristics better than 82% of other flights.

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