(UA) United Airlines 4399 On-Time Performance Rating

Date Range:

15-Feb-2026 to 15-Apr-2026

(PIA) General Wayne A. Downing Peoria Intl Airport

Peoria, IL, US

(ORD) Chicago O'Hare International Airport

Chicago, IL, US

On-Time Performance Chart

(using rounded numbers)

On-Time

65%

Late

Very Late

Excessive

25%

Cancelled

10%

Diverted

Delay Statistics

(Aggregate Arrival Delay Statistics for this Flight)

Total Flights Observed

Total Delays ( > 1 min )

Codeshares

Average Delay (min.)

76.875

Standard Deviation

74.8

Min

Max

219

UA 4399 On-Time Performance Details

Overall Rating

0.3 of 5

Very Poor

Percentage On-Time 65%

Average Delay Time 76.875 min

FlightStats Rating is a merit measurement considering both on-time performance and delay severity. The score, 0.3 shows that this flight has on-time performance characteristics better than 5% of all other flights in the FlightStats database.

On-Time Performance Rating

0.5 of 5

Very Poor

Percentage On-Time 65%

This flight has an on-time performance of 65%. Statistically, when taking into consideration sample size, standard deviation, and mean, this flight is on-time more often than 10% of other flights.

Delay Performance

0.1 of 5

Very Poor

Average Delay Time 76.875 min

This flight has an average delay of 76.875 minutes with a standard deviation of 74.8 minutes. Statistically, when taking into consideration sample size, standard deviation, and mean, this flight has delay performance characteristics better than 2% of other flights.