(UA) United Airlines 5591 On-Time Performance Rating

Date Range:

15-Jul-2026 to 15-Sep-2026

(ORD) Chicago O'Hare International Airport

Chicago, IL, US

(GSP) Greenville-Spartanburg International Airport

Greenville, SC, US

On-Time Performance Chart

(using rounded numbers)

On-Time

75%

Late

Very Late

Excessive

17%

Cancelled

Diverted

Delay Statistics

(Aggregate Arrival Delay Statistics for this Flight)

Total Flights Observed

Total Delays ( > 1 min )

Codeshares

Average Delay (min.)

26.5

Standard Deviation

28.3

Min

Max

UA 5591 On-Time Performance Details

Overall Rating

2.9 of 5

Average

Percentage On-Time 75%

Average Delay Time 26.5 min

FlightStats Rating is a merit measurement considering both on-time performance and delay severity. The score, 2.9 shows that this flight has on-time performance characteristics better than 57% of all other flights in the FlightStats database.

On-Time Performance Rating

2.5 of 5

Average

Percentage On-Time 75%

This flight has an on-time performance of 75%. Statistically, when taking into consideration sample size, standard deviation, and mean, this flight is on-time more often than 50% of other flights.

Delay Performance

3.3 of 5

Average

Average Delay Time 26.5 min

This flight has an average delay of 26.5 minutes with a standard deviation of 28.3 minutes. Statistically, when taking into consideration sample size, standard deviation, and mean, this flight has delay performance characteristics better than 66% of other flights.