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(UA) United Airlines 4788 On-Time Performance Rating

Date Range:

01-Jul-2026 to 31-Aug-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
37
67%
Late
4
7%
Very Late
3
5%
Excessive
7
13%
Cancelled
3
5%
Diverted
1
2%

Delay Statistics

(Aggregate Arrival Delay Statistics for this Flight)

Total Flights Observed
54
Total Delays ( > 1 min )
19
Codeshares
54
Average Delay (min.)
36.473684210526315
Standard Deviation
33.1
Min
0
Max
139

UA 4788 On-Time Performance Details

Overall Rating
2.1 of 5
Average
Percentage On-Time 69%
Average Delay Time 36.473684210526315 min
FlightStats Rating is a merit measurement considering both on-time performance and delay severity. The score, 2.1 shows that this flight has on-time performance characteristics better than 40% of all other flights in the FlightStats database.
On-Time Performance Rating
1.4 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 27% of other flights.
Delay Performance
2.7 of 5
Average
Average Delay Time 36.473684210526315 min
This flight has an average delay of 36.473684210526315 minutes with a standard deviation of 33.1 minutes. Statistically, when taking into consideration sample size, standard deviation, and mean, this flight has delay performance characteristics better than 54% of other flights.