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(UA) United Airlines 552 On-Time Performance Rating

Date Range:

01-Jan-2026 to 28-Feb-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
47
87%
Late
5
9%
Very Late
0
0%
Excessive
1
2%
Cancelled
0
0%
Diverted
1
2%

Delay Statistics

(Aggregate Arrival Delay Statistics for this Flight)

Total Flights Observed
53
Total Delays ( > 1 min )
15
Codeshares
0
Average Delay (min.)
14.333333333333334
Standard Deviation
16.9
Min
0
Max
71

UA 552 On-Time Performance Details

Overall Rating
4.7 of 5
Very Good
Percentage On-Time 89%
Average Delay Time 14.333333333333334 min
FlightStats Rating is a merit measurement considering both on-time performance and delay severity. The score, 4.7 shows that this flight has on-time performance characteristics better than 93% of all other flights in the FlightStats database.
On-Time Performance Rating
4.9 of 5
Very Good
Percentage On-Time 89%
This flight has an on-time performance of 89%. Statistically, when taking into consideration sample size, standard deviation, and mean, this flight is on-time more often than 99% of other flights.
Delay Performance
4.5 of 5
Good
Average Delay Time 14.333333333333334 min
This flight has an average delay of 14.333333333333334 minutes with a standard deviation of 16.9 minutes. Statistically, when taking into consideration sample size, standard deviation, and mean, this flight has delay performance characteristics better than 90% of other flights.

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