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(UA) United Airlines 1577 On-Time Performance Rating

Date Range:

15-Aug-2025 to 15-Oct-2025

(SFO) San Francisco International Airport

San Francisco, CA, US

(SEA) Seattle-Tacoma International Airport

Seattle, WA, US

On-Time Performance Chart

(using rounded numbers)
On-Time
14
70%
Late
4
20%
Very Late
1
5%
Excessive
1
5%
Cancelled
0
0%
Diverted
0
0%

Delay Statistics

(Aggregate Arrival Delay Statistics for this Flight)

Total Flights Observed
20
Total Delays ( > 1 min )
10
Codeshares
0
Average Delay (min.)
19.8
Standard Deviation
15.9
Min
0
Max
51

UA 1577 On-Time Performance Details

Overall Rating
2.5 of 5
Average
Percentage On-Time 70%
Average Delay Time 19.8 min
FlightStats Rating is a merit measurement considering both on-time performance and delay severity. The score, 2.5 shows that this flight has on-time performance characteristics better than 49% of all other flights in the FlightStats database.
On-Time Performance Rating
1.2 of 5
Poor
Percentage On-Time 70%
This flight has an on-time performance of 70%. Statistically, when taking into consideration sample size, standard deviation, and mean, this flight is on-time more often than 24% of other flights.
Delay Performance
3.8 of 5
Good
Average Delay Time 19.8 min
This flight has an average delay of 19.8 minutes with a standard deviation of 15.9 minutes. Statistically, when taking into consideration sample size, standard deviation, and mean, this flight has delay performance characteristics better than 76% of other flights.

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