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(UA) United Airlines 1239 On-Time Performance Rating

Date Range:

15-Jan-2026 to 15-Mar-2026

(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
4
40%
Late
2
20%
Very Late
0
0%
Excessive
3
30%
Cancelled
0
0%
Diverted
1
10%

Delay Statistics

(Aggregate Arrival Delay Statistics for this Flight)

Total Flights Observed
9
Total Delays ( > 1 min )
6
Codeshares
0
Average Delay (min.)
122.5
Standard Deviation
147.4
Min
0
Max
337

UA 1239 On-Time Performance Details

Overall Rating
0.1 of 5
Very Poor
Percentage On-Time 44%
Average Delay Time 122.5 min
FlightStats Rating is a merit measurement considering both on-time performance and delay severity. The score, 0.1 shows that this flight has on-time performance characteristics better than 0% of all other flights in the FlightStats database.
On-Time Performance Rating
0.1 of 5
Very Poor
Percentage On-Time 44%
This flight has an on-time performance of 44%. Statistically, when taking into consideration sample size, standard deviation, and mean, this flight is on-time more often than 1% of other flights.
Delay Performance
0.0 of 5
Very Poor
Average Delay Time 122.5 min
This flight has an average delay of 122.5 minutes with a standard deviation of 147.4 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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