background

(UA) United Airlines 1221 On-Time Performance Rating

Date Range:

01-Mar-2026 to 30-Apr-2026

(DEN) Denver International Airport

Denver, CO, US

(ONT) Ontario International Airport

Ontario, CA, US

On-Time Performance Chart

(using rounded numbers)
On-Time
3
100%
Late
0
0%
Very Late
0
0%
Excessive
0
0%
Cancelled
0
0%
Diverted
0
0%

Delay Statistics

(Aggregate Arrival Delay Statistics for this Flight)

Total Flights Observed
3
Total Delays ( > 1 min )
1
Codeshares
0
Average Delay (min.)
2
Standard Deviation
0
Min
0
Max
2

UA 1221 On-Time Performance Details

Overall Rating
3.9 of 5
Good
Percentage On-Time 100%
Average Delay Time 2 min
FlightStats Rating is a merit measurement considering both on-time performance and delay severity. The score, 3.9 shows that this flight has on-time performance characteristics better than 77% of all other flights in the FlightStats database.
On-Time Performance Rating
4.2 of 5
Good
Percentage On-Time 100%
This flight has an on-time performance of 100%. Statistically, when taking into consideration sample size, standard deviation, and mean, this flight is on-time more often than 84% of other flights.
Delay Performance
3.6 of 5
Good
Average Delay Time 2 min
This flight has an average delay of 2 minutes with a standard deviation of 0 minutes. Statistically, when taking into consideration sample size, standard deviation, and mean, this flight has delay performance characteristics better than 73% of other flights.

Other Stops for UA 1221