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(UA) United Airlines 1577 On-Time Performance Rating

Date Range:

01-Sep-2025 to 31-Oct-2025

(ORD) Chicago O'Hare International Airport

Chicago, IL, US

(SFO) San Francisco International Airport

San Francisco, CA, US

On-Time Performance Chart

(using rounded numbers)
On-Time
47
76%
Late
4
6%
Very Late
1
2%
Excessive
8
13%
Cancelled
0
0%
Diverted
2
3%

Delay Statistics

(Aggregate Arrival Delay Statistics for this Flight)

Total Flights Observed
60
Total Delays ( > 1 min )
26
Codeshares
0
Average Delay (min.)
59.38461538461539
Standard Deviation
100.2
Min
0
Max
436

UA 1577 On-Time Performance Details

Overall Rating
1.6 of 5
Average
Percentage On-Time 78%
Average Delay Time 59.38461538461539 min
FlightStats Rating is a merit measurement considering both on-time performance and delay severity. The score, 1.6 shows that this flight has on-time performance characteristics better than 30% of all other flights in the FlightStats database.
On-Time Performance Rating
3.1 of 5
Average
Percentage On-Time 78%
This flight has an on-time performance of 78%. Statistically, when taking into consideration sample size, standard deviation, and mean, this flight is on-time more often than 62% of other flights.
Delay Performance
0.0 of 5
Very Poor
Average Delay Time 59.38461538461539 min
This flight has an average delay of 59.38461538461539 minutes with a standard deviation of 100.2 minutes. Statistically, when taking into consideration sample size, standard deviation, and mean, this flight has delay performance characteristics better than 0% of other flights.

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