(UA) United Airlines 1239 On-Time Performance Rating

Date Range:

01-Dec-2025 to 31-Jan-2026

(EWR) Newark Liberty International Airport

Newark, NJ, US

(ORD) Chicago O'Hare International Airport

Chicago, IL, US

On-Time Performance Chart

(using rounded numbers)

On-Time

73%

Late

13%

Very Late

Excessive

13%

Cancelled

Diverted

Delay Statistics

(Aggregate Arrival Delay Statistics for this Flight)

Total Flights Observed

Total Delays ( > 1 min )

Codeshares

Average Delay (min.)

27.285714285714285

Standard Deviation

27.6

Min

Max

UA 1239 On-Time Performance Details

Overall Rating

3.0 of 5

Average

Percentage On-Time 73%

Average Delay Time 27.285714285714285 min

FlightStats Rating is a merit measurement considering both on-time performance and delay severity. The score, 3 shows that this flight has on-time performance characteristics better than 59% of all other flights in the FlightStats database.

On-Time Performance Rating

2.7 of 5

Average

Percentage On-Time 73%

This flight has an on-time performance of 73%. Statistically, when taking into consideration sample size, standard deviation, and mean, this flight is on-time more often than 54% of other flights.

Delay Performance

3.3 of 5

Average

Average Delay Time 27.285714285714285 min

This flight has an average delay of 27.285714285714285 minutes with a standard deviation of 27.6 minutes. Statistically, when taking into consideration sample size, standard deviation, and mean, this flight has delay performance characteristics better than 66% of other flights.