(UA) United Airlines 1535 On-Time Performance Rating

Date Range:

15-Aug-2025 to 15-Oct-2025

(IAH) Houston George Bush Intercontinental Airport

Houston, TX, US

(SFO) San Francisco International Airport

San Francisco, CA, US

On-Time Performance Chart

(using rounded numbers)

On-Time

79%

Late

14%

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.)

14.333333333333334

Standard Deviation

11.1

Min

Max

UA 1535 On-Time Performance Details

Overall Rating

3.4 of 5

Average

Percentage On-Time 79%

Average Delay Time 14.333333333333334 min

FlightStats Rating is a merit measurement considering both on-time performance and delay severity. The score, 3.4 shows that this flight has on-time performance characteristics better than 67% of all other flights in the FlightStats database.

On-Time Performance Rating

2.9 of 5

Average

Percentage On-Time 79%

This flight has an on-time performance of 79%. Statistically, when taking into consideration sample size, standard deviation, and mean, this flight is on-time more often than 58% of other flights.

Delay Performance

3.9 of 5

Good

Average Delay Time 14.333333333333334 min

This flight has an average delay of 14.333333333333334 minutes with a standard deviation of 11.1 minutes. Statistically, when taking into consideration sample size, standard deviation, and mean, this flight has delay performance characteristics better than 79% of other flights.