(UA) United Airlines 4383 On-Time Performance Rating

Date Range:

01-Aug-2025 to 30-Sep-2025

(STL) St Louis Lambert International Airport

Saint Louis, MO, US

(ORD) Chicago O'Hare International Airport

Chicago, IL, US

On-Time Performance Chart

(using rounded numbers)

On-Time

58%

Late

21%

Very Late

Excessive

11%

Cancelled

Diverted

11%

Delay Statistics

(Aggregate Arrival Delay Statistics for this Flight)

Total Flights Observed

Total Delays ( > 1 min )

Codeshares

Average Delay (min.)

45.75

Standard Deviation

67.3

Min

Max

207

UA 4383 On-Time Performance Details

Overall Rating

1.0 of 5

Poor

Percentage On-Time 65%

Average Delay Time 45.75 min

FlightStats Rating is a merit measurement considering both on-time performance and delay severity. The score, 1 shows that this flight has on-time performance characteristics better than 18% of all other flights in the FlightStats database.

On-Time Performance Rating

0.7 of 5

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 14% of other flights.

Delay Performance

1.2 of 5

Poor

Average Delay Time 45.75 min

This flight has an average delay of 45.75 minutes with a standard deviation of 67.3 minutes. Statistically, when taking into consideration sample size, standard deviation, and mean, this flight has delay performance characteristics better than 24% of other flights.