(UA) United Airlines 4439 On-Time Performance Rating

Date Range:

15-Apr-2026 to 15-Jun-2026

(FSD) Sioux Falls Regional Airport

Sioux Falls, SD, US

(ORD) Chicago O'Hare International Airport

Chicago, IL, US

On-Time Performance Chart

(using rounded numbers)

On-Time

85%

Late

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.)

15.333333333333334

Standard Deviation

17.8

Min

Max

UA 4439 On-Time Performance Details

Overall Rating

4.3 of 5

Good

Percentage On-Time 88%

Average Delay Time 15.333333333333334 min

FlightStats Rating is a merit measurement considering both on-time performance and delay severity. The score, 4.3 shows that this flight has on-time performance characteristics better than 84% of all other flights in the FlightStats database.

On-Time Performance Rating

4.4 of 5

Good

Percentage On-Time 88%

This flight has an on-time performance of 88%. Statistically, when taking into consideration sample size, standard deviation, and mean, this flight is on-time more often than 88% of other flights.

Delay Performance

4.1 of 5

Good

Average Delay Time 15.333333333333334 min

This flight has an average delay of 15.333333333333334 minutes with a standard deviation of 17.8 minutes. Statistically, when taking into consideration sample size, standard deviation, and mean, this flight has delay performance characteristics better than 82% of other flights.