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(UA) United Airlines 1239 On-Time Performance Rating

Date Range:

01-Jul-2025 to 31-Aug-2025

(JAX) Jacksonville International Airport

Jacksonville, FL, US

(ORD) Chicago O'Hare International Airport

Chicago, IL, US

On-Time Performance Chart

(using rounded numbers)
On-Time
24
86%
Late
1
4%
Very Late
1
4%
Excessive
2
7%
Cancelled
0
0%
Diverted
0
0%

Delay Statistics

(Aggregate Arrival Delay Statistics for this Flight)

Total Flights Observed
28
Total Delays ( > 1 min )
8
Codeshares
0
Average Delay (min.)
34.875
Standard Deviation
44.2
Min
0
Max
135

UA 1239 On-Time Performance Details

Overall Rating
3.7 of 5
Good
Percentage On-Time 86%
Average Delay Time 34.875 min
FlightStats Rating is a merit measurement considering both on-time performance and delay severity. The score, 3.7 shows that this flight has on-time performance characteristics better than 73% of all other flights in the FlightStats database.
On-Time Performance Rating
4.7 of 5
Very Good
Percentage On-Time 86%
This flight has an on-time performance of 86%. Statistically, when taking into consideration sample size, standard deviation, and mean, this flight is on-time more often than 93% of other flights.
Delay Performance
2.7 of 5
Average
Average Delay Time 34.875 min
This flight has an average delay of 34.875 minutes with a standard deviation of 44.2 minutes. Statistically, when taking into consideration sample size, standard deviation, and mean, this flight has delay performance characteristics better than 54% of other flights.

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