(UA) United Airlines 4428 On-Time Performance Rating

Date Range:

01-May-2026 to 30-Jun-2026

(LEX) Blue Grass Airport

Lexington, KY, US

(ORD) Chicago O'Hare International Airport

Chicago, IL, US

On-Time Performance Chart

(using rounded numbers)

On-Time

78%

Late

22%

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.)

17.4

Standard Deviation

9.6

Min

Max

UA 4428 On-Time Performance Details

Overall Rating

3.2 of 5

Average

Percentage On-Time 78%

Average Delay Time 17.4 min

FlightStats Rating is a merit measurement considering both on-time performance and delay severity. The score, 3.2 shows that this flight has on-time performance characteristics better than 62% of all other flights in the FlightStats database.

On-Time Performance Rating

2.7 of 5

Average

Percentage On-Time 78%

This flight has an on-time performance of 78%. 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

3.6 of 5

Good

Average Delay Time 17.4 min

This flight has an average delay of 17.4 minutes with a standard deviation of 9.6 minutes. Statistically, when taking into consideration sample size, standard deviation, and mean, this flight has delay performance characteristics better than 73% of other flights.