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(UA) United Airlines 3509 On-Time Performance Rating

Date Range:

01-Mar-2026 to 30-Apr-2026

(ORD) Chicago O'Hare International Airport

Chicago, IL, US

(YOW) Ottawa Macdonald-Cartier International Airport

Ottawa, ON, CA

On-Time Performance Chart

(using rounded numbers)
On-Time
43
70%
Late
6
10%
Very Late
2
3%
Excessive
9
15%
Cancelled
0
0%
Diverted
1
2%

Delay Statistics

(Aggregate Arrival Delay Statistics for this Flight)

Total Flights Observed
60
Total Delays ( > 1 min )
25
Codeshares
60
Average Delay (min.)
51.88
Standard Deviation
56.1
Min
0
Max
207

UA 3509 On-Time Performance Details

Overall Rating
0.5 of 5
Very Poor
Percentage On-Time 72%
Average Delay Time 51.88 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 8% of all other flights in the FlightStats database.
On-Time Performance Rating
0.6 of 5
Poor
Percentage On-Time 72%
This flight has an on-time performance of 72%. Statistically, when taking into consideration sample size, standard deviation, and mean, this flight is on-time more often than 12% of other flights.
Delay Performance
0.3 of 5
Very Poor
Average Delay Time 51.88 min
This flight has an average delay of 51.88 minutes with a standard deviation of 56.1 minutes. Statistically, when taking into consideration sample size, standard deviation, and mean, this flight has delay performance characteristics better than 5% of other flights.

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