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(UA) United Airlines 1637 On-Time Performance Rating

Date Range:

01-Aug-2025 to 30-Sep-2025

(PHX) Phoenix Sky Harbor International Airport

Phoenix, AZ, US

(DEN) Denver International Airport

Denver, CO, US

On-Time Performance Chart

(using rounded numbers)
On-Time
35
74%
Late
3
6%
Very Late
0
0%
Excessive
8
17%
Cancelled
1
2%
Diverted
0
0%

Delay Statistics

(Aggregate Arrival Delay Statistics for this Flight)

Total Flights Observed
47
Total Delays ( > 1 min )
18
Codeshares
0
Average Delay (min.)
38.833333333333336
Standard Deviation
38.2
Min
0
Max
143

UA 1637 On-Time Performance Details

Overall Rating
1.8 of 5
Average
Percentage On-Time 75%
Average Delay Time 38.833333333333336 min
FlightStats Rating is a merit measurement considering both on-time performance and delay severity. The score, 1.8 shows that this flight has on-time performance characteristics better than 35% of all other flights in the FlightStats database.
On-Time Performance Rating
2.1 of 5
Average
Percentage On-Time 75%
This flight has an on-time performance of 75%. Statistically, when taking into consideration sample size, standard deviation, and mean, this flight is on-time more often than 42% of other flights.
Delay Performance
1.5 of 5
Poor
Average Delay Time 38.833333333333336 min
This flight has an average delay of 38.833333333333336 minutes with a standard deviation of 38.2 minutes. Statistically, when taking into consideration sample size, standard deviation, and mean, this flight has delay performance characteristics better than 31% of other flights.