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(UA) United Airlines 401 On-Time Performance Rating

Date Range:

15-Aug-2025 to 15-Oct-2025

(STL) St Louis Lambert International Airport

Saint Louis, MO, US

(DEN) Denver International Airport

Denver, CO, US

On-Time Performance Chart

(using rounded numbers)
On-Time
19
86%
Late
2
9%
Very Late
0
0%
Excessive
0
0%
Cancelled
0
0%
Diverted
1
5%

Delay Statistics

(Aggregate Arrival Delay Statistics for this Flight)

Total Flights Observed
21
Total Delays ( > 1 min )
6
Codeshares
0
Average Delay (min.)
12.166666666666666
Standard Deviation
7.9
Min
0
Max
25

UA 401 On-Time Performance Details

Overall Rating
4.4 of 5
Good
Percentage On-Time 91%
Average Delay Time 12.166666666666666 min
FlightStats Rating is a merit measurement considering both on-time performance and delay severity. The score, 4.4 shows that this flight has on-time performance characteristics better than 87% of all other flights in the FlightStats database.
On-Time Performance Rating
4.7 of 5
Very Good
Percentage On-Time 91%
This flight has an on-time performance of 91%. Statistically, when taking into consideration sample size, standard deviation, and mean, this flight is on-time more often than 95% of other flights.
Delay Performance
4.1 of 5
Good
Average Delay Time 12.166666666666666 min
This flight has an average delay of 12.166666666666666 minutes with a standard deviation of 7.9 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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