(UA) United Airlines 4487 On-Time Performance Rating

Date Range:

01-Jul-2026 to 31-Aug-2026

(GRR) Grand Rapids Gerald R. Ford International Airport

Grand Rapids, MI, US

(ORD) Chicago O'Hare International Airport

Chicago, IL, US

On-Time Performance Chart

(using rounded numbers)

On-Time

86%

Late

Very Late

Excessive

14%

Cancelled

Diverted

Delay Statistics

(Aggregate Arrival Delay Statistics for this Flight)

Total Flights Observed

Total Delays ( > 1 min )

Codeshares

Average Delay (min.)

141

Standard Deviation

Min

Max

141

UA 4487 On-Time Performance Details

Overall Rating

2.1 of 5

Average

Percentage On-Time 86%

Average Delay Time 141 min

FlightStats Rating is a merit measurement considering both on-time performance and delay severity. The score, 2.1 shows that this flight has on-time performance characteristics better than 40% of all other flights in the FlightStats database.

On-Time Performance Rating

3.9 of 5

Good

Percentage On-Time 86%

This flight has an on-time performance of 86%. Statistically, when taking into consideration sample size, standard deviation, and mean, this flight is on-time more often than 79% of other flights.

Delay Performance

0.2 of 5

Very Poor

Average Delay Time 141 min

This flight has an average delay of 141 minutes with a standard deviation of 0 minutes. Statistically, when taking into consideration sample size, standard deviation, and mean, this flight has delay performance characteristics better than 4% of other flights.