(UA) United Airlines 393 On-Time Performance Rating

Date Range:

01-Jul-2025 to 31-Aug-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

31%

Late

31%

Very Late

Excessive

31%

Cancelled

Diverted

Delay Statistics

(Aggregate Arrival Delay Statistics for this Flight)

Total Flights Observed

Total Delays ( > 1 min )

Codeshares

Average Delay (min.)

58.6

Standard Deviation

52.6

Min

Max

155

UA 393 On-Time Performance Details

Overall Rating

0.3 of 5

Very Poor

Percentage On-Time 31%

Average Delay Time 58.6 min

FlightStats Rating is a merit measurement considering both on-time performance and delay severity. The score, 0.3 shows that this flight has on-time performance characteristics better than 5% of all other flights in the FlightStats database.

On-Time Performance Rating

0.0 of 5

Very Poor

Percentage On-Time 31%

This flight has an on-time performance of 31%. Statistically, when taking into consideration sample size, standard deviation, and mean, this flight is on-time more often than 0% of other flights.

Delay Performance

0.6 of 5

Poor

Average Delay Time 58.6 min

This flight has an average delay of 58.6 minutes with a standard deviation of 52.6 minutes. Statistically, when taking into consideration sample size, standard deviation, and mean, this flight has delay performance characteristics better than 12% of other flights.