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(UA) United Airlines 644 On-Time Performance Rating

Date Range:

15-Jan-2026 to 15-Mar-2026

(DEN) Denver International Airport

Denver, CO, US

(PDX) Portland International Airport

Portland, OR, US

On-Time Performance Chart

(using rounded numbers)
On-Time
49
79%
Late
3
5%
Very Late
3
5%
Excessive
6
10%
Cancelled
0
0%
Diverted
1
2%

Delay Statistics

(Aggregate Arrival Delay Statistics for this Flight)

Total Flights Observed
61
Total Delays ( > 1 min )
23
Codeshares
0
Average Delay (min.)
28.782608695652176
Standard Deviation
31.9
Min
0
Max
132

UA 644 On-Time Performance Details

Overall Rating
3.7 of 5
Good
Percentage On-Time 80%
Average Delay Time 28.782608695652176 min
FlightStats Rating is a merit measurement considering both on-time performance and delay severity. The score, 3.7 shows that this flight has on-time performance characteristics better than 73% of all other flights in the FlightStats database.
On-Time Performance Rating
4.1 of 5
Good
Percentage On-Time 80%
This flight has an on-time performance of 80%. Statistically, when taking into consideration sample size, standard deviation, and mean, this flight is on-time more often than 82% of other flights.
Delay Performance
3.3 of 5
Average
Average Delay Time 28.782608695652176 min
This flight has an average delay of 28.782608695652176 minutes with a standard deviation of 31.9 minutes. Statistically, when taking into consideration sample size, standard deviation, and mean, this flight has delay performance characteristics better than 66% of other flights.

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