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(UA) United Airlines 643 On-Time Performance Rating

Date Range:

01-Nov-2025 to 31-Dec-2025

(SEA) Seattle-Tacoma International Airport

Seattle, WA, US

(SFO) San Francisco International Airport

San Francisco, CA, US

On-Time Performance Chart

(using rounded numbers)
On-Time
6
40%
Late
2
13%
Very Late
4
27%
Excessive
3
20%
Cancelled
0
0%
Diverted
0
0%

Delay Statistics

(Aggregate Arrival Delay Statistics for this Flight)

Total Flights Observed
15
Total Delays ( > 1 min )
9
Codeshares
0
Average Delay (min.)
40.111111111111114
Standard Deviation
20.8
Min
0
Max
88

UA 643 On-Time Performance Details

Overall Rating
1.0 of 5
Poor
Percentage On-Time 40%
Average Delay Time 40.111111111111114 min
FlightStats Rating is a merit measurement considering both on-time performance and delay severity. The score, 1 shows that this flight has on-time performance characteristics better than 18% of all other flights in the FlightStats database.
On-Time Performance Rating
0.0 of 5
Very Poor
Percentage On-Time 40%
This flight has an on-time performance of 40%. 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
1.9 of 5
Average
Average Delay Time 40.111111111111114 min
This flight has an average delay of 40.111111111111114 minutes with a standard deviation of 20.8 minutes. Statistically, when taking into consideration sample size, standard deviation, and mean, this flight has delay performance characteristics better than 38% of other flights.

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