(UA) United Airlines 1239 On-Time Performance Rating

Date Range:

01-Dec-2025 to 31-Jan-2026

(MSN) Dane County Regional Airport

Madison, WI, US

(ORD) Chicago O'Hare International Airport

Chicago, IL, US

On-Time Performance Chart

(using rounded numbers)

On-Time

50%

Late

50%

Very Late

Excessive

Cancelled

Diverted

Delay Statistics

(Aggregate Arrival Delay Statistics for this Flight)

Total Flights Observed

Total Delays ( > 1 min )

Codeshares

Average Delay (min.)

10.5

Standard Deviation

9.2

Min

Max

UA 1239 On-Time Performance Details

Overall Rating

2.4 of 5

Average

Percentage On-Time 50%

Average Delay Time 10.5 min

FlightStats Rating is a merit measurement considering both on-time performance and delay severity. The score, 2.4 shows that this flight has on-time performance characteristics better than 46% of all other flights in the FlightStats database.

On-Time Performance Rating

1.1 of 5

Poor

Percentage On-Time 50%

This flight has an on-time performance of 50%. Statistically, when taking into consideration sample size, standard deviation, and mean, this flight is on-time more often than 21% of other flights.

Delay Performance

3.6 of 5

Good

Average Delay Time 10.5 min

This flight has an average delay of 10.5 minutes with a standard deviation of 9.2 minutes. Statistically, when taking into consideration sample size, standard deviation, and mean, this flight has delay performance characteristics better than 73% of other flights.