(UA) United Airlines 636 On-Time Performance Rating

Date Range:

01-Aug-2025 to 30-Sep-2025

(TUS) Tucson International Airport

Tucson, AZ, US

(ORD) Chicago O'Hare International Airport

Chicago, IL, US

On-Time Performance Chart

(using rounded numbers)

On-Time

78%

Late

Very Late

Excessive

22%

Cancelled

Diverted

Delay Statistics

(Aggregate Arrival Delay Statistics for this Flight)

Total Flights Observed

Total Delays ( > 1 min )

Codeshares

Average Delay (min.)

51.888888888888886

Standard Deviation

53.9

Min

Max

171

UA 636 On-Time Performance Details

Overall Rating

1.7 of 5

Average

Percentage On-Time 78%

Average Delay Time 51.888888888888886 min

FlightStats Rating is a merit measurement considering both on-time performance and delay severity. The score, 1.7 shows that this flight has on-time performance characteristics better than 33% of all other flights in the FlightStats database.

On-Time Performance Rating

2.9 of 5

Average

Percentage On-Time 78%

This flight has an on-time performance of 78%. Statistically, when taking into consideration sample size, standard deviation, and mean, this flight is on-time more often than 58% of other flights.

Delay Performance

0.5 of 5

Very Poor

Average Delay Time 51.888888888888886 min

This flight has an average delay of 51.888888888888886 minutes with a standard deviation of 53.9 minutes. Statistically, when taking into consideration sample size, standard deviation, and mean, this flight has delay performance characteristics better than 10% of other flights.