background

(UA) United Airlines 646 On-Time Performance Rating

Date Range:

15-Oct-2025 to 15-Dec-2025

(SLC) Salt Lake City International Airport

Salt Lake City, UT, US

(SFO) San Francisco International Airport

San Francisco, CA, US

On-Time Performance Chart

(using rounded numbers)
On-Time
9
90%
Late
1
10%
Very Late
0
0%
Excessive
0
0%
Cancelled
0
0%
Diverted
0
0%

Delay Statistics

(Aggregate Arrival Delay Statistics for this Flight)

Total Flights Observed
10
Total Delays ( > 1 min )
3
Codeshares
0
Average Delay (min.)
11.333333333333334
Standard Deviation
10.4
Min
0
Max
23

UA 646 On-Time Performance Details

Overall Rating
4.1 of 5
Good
Percentage On-Time 90%
Average Delay Time 11.333333333333334 min
FlightStats Rating is a merit measurement considering both on-time performance and delay severity. The score, 4.1 shows that this flight has on-time performance characteristics better than 80% of all other flights in the FlightStats database.
On-Time Performance Rating
4.3 of 5
Good
Percentage On-Time 90%
This flight has an on-time performance of 90%. Statistically, when taking into consideration sample size, standard deviation, and mean, this flight is on-time more often than 86% of other flights.
Delay Performance
3.8 of 5
Good
Average Delay Time 11.333333333333334 min
This flight has an average delay of 11.333333333333334 minutes with a standard deviation of 10.4 minutes. Statistically, when taking into consideration sample size, standard deviation, and mean, this flight has delay performance characteristics better than 76% of other flights.

Other Stops for UA 646