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(UA) United Airlines 4631 On-Time Performance Rating

Date Range:

15-Dec-2025 to 15-Feb-2026

(CPR) Casper - Natrona County International Airport

Casper, WY, US

(DEN) Denver International Airport

Denver, CO, US

On-Time Performance Chart

(using rounded numbers)
On-Time
48
79%
Late
7
11%
Very Late
0
0%
Excessive
5
8%
Cancelled
0
0%
Diverted
1
2%

Delay Statistics

(Aggregate Arrival Delay Statistics for this Flight)

Total Flights Observed
60
Total Delays ( > 1 min )
31
Codeshares
60
Average Delay (min.)
37.903225806451616
Standard Deviation
84.7
Min
0
Max
436

UA 4631 On-Time Performance Details

Overall Rating
3.1 of 5
Average
Percentage On-Time 80%
Average Delay Time 37.903225806451616 min
FlightStats Rating is a merit measurement considering both on-time performance and delay severity. The score, 3.1 shows that this flight has on-time performance characteristics better than 60% of all other flights in the FlightStats database.
On-Time Performance Rating
4.4 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 88% of other flights.
Delay Performance
1.7 of 5
Average
Average Delay Time 37.903225806451616 min
This flight has an average delay of 37.903225806451616 minutes with a standard deviation of 84.7 minutes. Statistically, when taking into consideration sample size, standard deviation, and mean, this flight has delay performance characteristics better than 34% of other flights.

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