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(UA) United Airlines 1236 On-Time Performance Rating

Date Range:

15-Dec-2025 to 15-Feb-2026

(DEN) Denver International Airport

Denver, CO, US

(PHX) Phoenix Sky Harbor International Airport

Phoenix, AZ, US

On-Time Performance Chart

(using rounded numbers)
On-Time
30
81%
Late
2
5%
Very Late
2
5%
Excessive
3
8%
Cancelled
0
0%
Diverted
0
0%

Delay Statistics

(Aggregate Arrival Delay Statistics for this Flight)

Total Flights Observed
37
Total Delays ( > 1 min )
11
Codeshares
0
Average Delay (min.)
38
Standard Deviation
47
Min
0
Max
165

UA 1236 On-Time Performance Details

Overall Rating
3.0 of 5
Average
Percentage On-Time 81%
Average Delay Time 38 min
FlightStats Rating is a merit measurement considering both on-time performance and delay severity. The score, 3 shows that this flight has on-time performance characteristics better than 59% of all other flights in the FlightStats database.
On-Time Performance Rating
4.1 of 5
Good
Percentage On-Time 81%
This flight has an on-time performance of 81%. 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
1.9 of 5
Average
Average Delay Time 38 min
This flight has an average delay of 38 minutes with a standard deviation of 47 minutes. Statistically, when taking into consideration sample size, standard deviation, and mean, this flight has delay performance characteristics better than 38% of other flights.

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