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(UA) United Airlines 8577 On-Time Performance Rating

Date Range:

01-Aug-2025 to 30-Sep-2025

(YVR) Vancouver International Airport

Vancouver, BC, CA

(SFO) San Francisco International Airport

San Francisco, CA, US

On-Time Performance Chart

(using rounded numbers)
On-Time
42
69%
Late
8
13%
Very Late
3
5%
Excessive
4
7%
Cancelled
4
7%
Diverted
0
0%

Delay Statistics

(Aggregate Arrival Delay Statistics for this Flight)

Total Flights Observed
61
Total Delays ( > 1 min )
33
Codeshares
61
Average Delay (min.)
20.90909090909091
Standard Deviation
21.8
Min
0
Max
99

UA 8577 On-Time Performance Details

Overall Rating
2.3 of 5
Average
Percentage On-Time 69%
Average Delay Time 20.90909090909091 min
FlightStats Rating is a merit measurement considering both on-time performance and delay severity. The score, 2.3 shows that this flight has on-time performance characteristics better than 45% of all other flights in the FlightStats database.
On-Time Performance Rating
0.3 of 5
Very Poor
Percentage On-Time 69%
This flight has an on-time performance of 69%. Statistically, when taking into consideration sample size, standard deviation, and mean, this flight is on-time more often than 7% of other flights.
Delay Performance
4.3 of 5
Good
Average Delay Time 20.90909090909091 min
This flight has an average delay of 20.90909090909091 minutes with a standard deviation of 21.8 minutes. Statistically, when taking into consideration sample size, standard deviation, and mean, this flight has delay performance characteristics better than 86% of other flights.