(UA) United Airlines 539 On-Time Performance Rating

Date Range:

01-May-2025 to 30-Jun-2025

(ATL) Atlanta Hartsfield-Jackson International Airport

Atlanta, GA, US

(SFO) San Francisco International Airport

San Francisco, CA, US

On-Time Performance Chart

(using rounded numbers)

On-Time

92%

Late

Very Late

Excessive

Cancelled

Diverted

Delay Statistics

(Aggregate Arrival Delay Statistics for this Flight)

Total Flights Observed

Total Delays ( > 1 min )

Codeshares

Average Delay (min.)

12.6

Standard Deviation

12.4

Min

Max

UA 539 On-Time Performance Details

Overall Rating

4.8 of 5

Very Good

Percentage On-Time 92%

Average Delay Time 12.6 min

FlightStats Rating is a merit measurement considering both on-time performance and delay severity. The score, 4.8 shows that this flight has on-time performance characteristics better than 95% of all other flights in the FlightStats database.

On-Time Performance Rating

4.9 of 5

Very Good

Percentage On-Time 92%

This flight has an on-time performance of 92%. Statistically, when taking into consideration sample size, standard deviation, and mean, this flight is on-time more often than 98% of other flights.

Delay Performance

4.7 of 5

Very Good

Average Delay Time 12.6 min

This flight has an average delay of 12.6 minutes with a standard deviation of 12.4 minutes. Statistically, when taking into consideration sample size, standard deviation, and mean, this flight has delay performance characteristics better than 93% of other flights.