(UA) United Airlines 3640 On-Time Performance Rating

Date Range:

15-Aug-2025 to 15-Oct-2025

(YYZ) Toronto Pearson International Airport

Toronto, ON, CA

(ORD) Chicago O'Hare International Airport

Chicago, IL, US

On-Time Performance Chart

(using rounded numbers)

On-Time

86%

Late

Very Late

Excessive

Cancelled

Diverted

Delay Statistics

(Aggregate Arrival Delay Statistics for this Flight)

Total Flights Observed

Total Delays ( > 1 min )

Codeshares

Average Delay (min.)

23.5

Standard Deviation

24.7

Min

Max

UA 3640 On-Time Performance Details

Overall Rating

3.5 of 5

Average

Percentage On-Time 86%

Average Delay Time 23.5 min

FlightStats Rating is a merit measurement considering both on-time performance and delay severity. The score, 3.5 shows that this flight has on-time performance characteristics better than 69% of all other flights in the FlightStats database.

On-Time Performance Rating

4.1 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 82% of other flights.

Delay Performance

2.9 of 5

Average

Average Delay Time 23.5 min

This flight has an average delay of 23.5 minutes with a standard deviation of 24.7 minutes. Statistically, when taking into consideration sample size, standard deviation, and mean, this flight has delay performance characteristics better than 58% of other flights.