(UA) United Airlines 4580 On-Time Performance Rating

Date Range:

15-Mar-2026 to 15-May-2026

(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

47%

Late

13%

Very Late

Excessive

13%

Cancelled

Diverted

13%

Delay Statistics

(Aggregate Arrival Delay Statistics for this Flight)

Total Flights Observed

Total Delays ( > 1 min )

Codeshares

Average Delay (min.)

38.6

Standard Deviation

16.5

Min

Max

UA 4580 On-Time Performance Details

Overall Rating

1.0 of 5

Poor

Percentage On-Time 54%

Average Delay Time 38.6 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 19% of all other flights in the FlightStats database.

On-Time Performance Rating

0.1 of 5

Very Poor

Percentage On-Time 54%

This flight has an on-time performance of 54%. Statistically, when taking into consideration sample size, standard deviation, and mean, this flight is on-time more often than 1% of other flights.

Delay Performance

1.9 of 5

Average

Average Delay Time 38.6 min

This flight has an average delay of 38.6 minutes with a standard deviation of 16.5 minutes. Statistically, when taking into consideration sample size, standard deviation, and mean, this flight has delay performance characteristics better than 38% of other flights.