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(UA) United Airlines 4788 On-Time Performance Rating

Date Range:

01-Aug-2026 to 30-Sep-2026

(SUN) Friedman Memorial Airport

Sun Valley, ID, US

(ORD) Chicago O'Hare International Airport

Chicago, IL, US

On-Time Performance Chart

(using rounded numbers)
On-Time
27
68%
Late
1
3%
Very Late
2
5%
Excessive
7
18%
Cancelled
2
5%
Diverted
1
3%

Delay Statistics

(Aggregate Arrival Delay Statistics for this Flight)

Total Flights Observed
39
Total Delays ( > 1 min )
12
Codeshares
39
Average Delay (min.)
87.5
Standard Deviation
98.3
Min
0
Max
271

UA 4788 On-Time Performance Details

Overall Rating
0.5 of 5
Very Poor
Percentage On-Time 69%
Average Delay Time 87.5 min
FlightStats Rating is a merit measurement considering both on-time performance and delay severity. The score, 0.5 shows that this flight has on-time performance characteristics better than 8% of all other flights in the FlightStats database.
On-Time Performance Rating
0.9 of 5
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 18% of other flights.
Delay Performance
0.0 of 5
Very Poor
Average Delay Time 87.5 min
This flight has an average delay of 87.5 minutes with a standard deviation of 98.3 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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