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(UA) United Airlines 277 On-Time Performance Rating

Date Range:

15-Jul-2025 to 15-Sep-2025

(ONT) Ontario International Airport

Ontario, CA, US

(SFO) San Francisco International Airport

San Francisco, CA, US

On-Time Performance Chart

(using rounded numbers)
On-Time
28
82%
Late
1
3%
Very Late
2
6%
Excessive
2
6%
Cancelled
0
0%
Diverted
1
3%

Delay Statistics

(Aggregate Arrival Delay Statistics for this Flight)

Total Flights Observed
33
Total Delays ( > 1 min )
12
Codeshares
0
Average Delay (min.)
39.916666666666664
Standard Deviation
75.6
Min
0
Max
268

UA 277 On-Time Performance Details

Overall Rating
3.3 of 5
Average
Percentage On-Time 85%
Average Delay Time 39.916666666666664 min
FlightStats Rating is a merit measurement considering both on-time performance and delay severity. The score, 3.3 shows that this flight has on-time performance characteristics better than 65% of all other flights in the FlightStats database.
On-Time Performance Rating
4.7 of 5
Very Good
Percentage On-Time 85%
This flight has an on-time performance of 85%. Statistically, when taking into consideration sample size, standard deviation, and mean, this flight is on-time more often than 93% of other flights.
Delay Performance
1.9 of 5
Average
Average Delay Time 39.916666666666664 min
This flight has an average delay of 39.916666666666664 minutes with a standard deviation of 75.6 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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