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(UA) United Airlines 1239 On-Time Performance Rating

Date Range:

01-Dec-2025 to 31-Jan-2026

(ORD) Chicago O'Hare International Airport

Chicago, IL, US

(RNO) Reno-Tahoe International Airport

Reno, NV, US

On-Time Performance Chart

(using rounded numbers)
On-Time
4
67%
Late
0
0%
Very Late
1
17%
Excessive
1
17%
Cancelled
0
0%
Diverted
0
0%

Delay Statistics

(Aggregate Arrival Delay Statistics for this Flight)

Total Flights Observed
6
Total Delays ( > 1 min )
2
Codeshares
0
Average Delay (min.)
90.5
Standard Deviation
84.1
Min
0
Max
150

UA 1239 On-Time Performance Details

Overall Rating
1.1 of 5
Poor
Percentage On-Time 67%
Average Delay Time 90.5 min
FlightStats Rating is a merit measurement considering both on-time performance and delay severity. The score, 1.1 shows that this flight has on-time performance characteristics better than 21% of all other flights in the FlightStats database.
On-Time Performance Rating
1.7 of 5
Average
Percentage On-Time 67%
This flight has an on-time performance of 67%. Statistically, when taking into consideration sample size, standard deviation, and mean, this flight is on-time more often than 34% of other flights.
Delay Performance
0.5 of 5
Very Poor
Average Delay Time 90.5 min
This flight has an average delay of 90.5 minutes with a standard deviation of 84.1 minutes. Statistically, when taking into consideration sample size, standard deviation, and mean, this flight has delay performance characteristics better than 10% of other flights.

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