(UA) United Airlines 5591 On-Time Performance Rating

Date Range:

15-Jul-2026 to 15-Sep-2026

(MLI) Quad Cities International Airport

Moline, IL, US

(ORD) Chicago O'Hare International Airport

Chicago, IL, US

On-Time Performance Chart

(using rounded numbers)

On-Time

63%

Late

13%

Very Late

Excessive

25%

Cancelled

Diverted

Delay Statistics

(Aggregate Arrival Delay Statistics for this Flight)

Total Flights Observed

Total Delays ( > 1 min )

Codeshares

Average Delay (min.)

108

Standard Deviation

121.8

Min

Max

248

UA 5591 On-Time Performance Details

Overall Rating

0.5 of 5

Very Poor

Percentage On-Time 63%

Average Delay Time 108 min

FlightStats Rating is a merit measurement considering both on-time performance and delay severity. The score, 0.5 shows that this flight has on-time performance characteristics better than 9% of all other flights in the FlightStats database.

On-Time Performance Rating

0.9 of 5

Poor

Percentage On-Time 63%

This flight has an on-time performance of 63%. Statistically, when taking into consideration sample size, standard deviation, and mean, this flight is on-time more often than 18% of other flights.

Delay Performance

0.1 of 5

Very Poor

Average Delay Time 108 min

This flight has an average delay of 108 minutes with a standard deviation of 121.8 minutes. Statistically, when taking into consideration sample size, standard deviation, and mean, this flight has delay performance characteristics better than 1% of other flights.