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(UA) United Airlines 1578 On-Time Performance Rating

Date Range:

01-May-2026 to 30-Jun-2026

(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
1
5%
Late
4
21%
Very Late
7
37%
Excessive
7
37%
Cancelled
0
0%
Diverted
0
0%

Delay Statistics

(Aggregate Arrival Delay Statistics for this Flight)

Total Flights Observed
19
Total Delays ( > 1 min )
19
Codeshares
0
Average Delay (min.)
45.68421052631579
Standard Deviation
25.4
Min
7
Max
101

UA 1578 On-Time Performance Details

Overall Rating
0.6 of 5
Poor
Percentage On-Time 5%
Average Delay Time 45.68421052631579 min
FlightStats Rating is a merit measurement considering both on-time performance and delay severity. The score, 0.6 shows that this flight has on-time performance characteristics better than 11% of all other flights in the FlightStats database.
On-Time Performance Rating
0.0 of 5
Very Poor
Percentage On-Time 5%
This flight has an on-time performance of 5%. 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
1.2 of 5
Poor
Average Delay Time 45.68421052631579 min
This flight has an average delay of 45.68421052631579 minutes with a standard deviation of 25.4 minutes. Statistically, when taking into consideration sample size, standard deviation, and mean, this flight has delay performance characteristics better than 24% of other flights.

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