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(UA) United Airlines 1561 On-Time Performance Rating

Date Range:

15-Jan-2026 to 15-Mar-2026

(SFO) San Francisco International Airport

San Francisco, CA, US

(ONT) Ontario International Airport

Ontario, CA, US

On-Time Performance Chart

(using rounded numbers)
On-Time
8
80%
Late
1
10%
Very Late
0
0%
Excessive
1
10%
Cancelled
0
0%
Diverted
0
0%

Delay Statistics

(Aggregate Arrival Delay Statistics for this Flight)

Total Flights Observed
10
Total Delays ( > 1 min )
4
Codeshares
0
Average Delay (min.)
37
Standard Deviation
48.9
Min
0
Max
109

UA 1561 On-Time Performance Details

Overall Rating
2.7 of 5
Average
Percentage On-Time 80%
Average Delay Time 37 min
FlightStats Rating is a merit measurement considering both on-time performance and delay severity. The score, 2.7 shows that this flight has on-time performance characteristics better than 53% of all other flights in the FlightStats database.
On-Time Performance Rating
3.3 of 5
Average
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 66% of other flights.
Delay Performance
2.1 of 5
Average
Average Delay Time 37 min
This flight has an average delay of 37 minutes with a standard deviation of 48.9 minutes. Statistically, when taking into consideration sample size, standard deviation, and mean, this flight has delay performance characteristics better than 42% of other flights.

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