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(UA) United Airlines 3640 On-Time Performance Rating

Date Range:

01-Aug-2026 to 30-Sep-2026

(RIC) Richmond International Airport

Richmond, VA, US

(ORD) Chicago O'Hare International Airport

Chicago, IL, US

On-Time Performance Chart

(using rounded numbers)
On-Time
44
77%
Late
6
11%
Very Late
1
2%
Excessive
4
7%
Cancelled
2
4%
Diverted
0
0%

Delay Statistics

(Aggregate Arrival Delay Statistics for this Flight)

Total Flights Observed
57
Total Delays ( > 1 min )
11
Codeshares
57
Average Delay (min.)
41.09090909090909
Standard Deviation
27.1
Min
0
Max
97

UA 3640 On-Time Performance Details

Overall Rating
2.1 of 5
Average
Percentage On-Time 77%
Average Delay Time 41.09090909090909 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
2.7 of 5
Average
Percentage On-Time 77%
This flight has an on-time performance of 77%. Statistically, when taking into consideration sample size, standard deviation, and mean, this flight is on-time more often than 54% of other flights.
Delay Performance
1.4 of 5
Poor
Average Delay Time 41.09090909090909 min
This flight has an average delay of 41.09090909090909 minutes with a standard deviation of 27.1 minutes. Statistically, when taking into consideration sample size, standard deviation, and mean, this flight has delay performance characteristics better than 27% of other flights.

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