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(UA) United Airlines 661 On-Time Performance Rating

Date Range:

15-Jun-2026 to 15-Aug-2026

(ORD) Chicago O'Hare International Airport

Chicago, IL, US

(LAX) Los Angeles International Airport

Los Angeles, CA, US

On-Time Performance Chart

(using rounded numbers)
On-Time
15
56%
Late
3
11%
Very Late
4
15%
Excessive
4
15%
Cancelled
1
4%
Diverted
0
0%

Delay Statistics

(Aggregate Arrival Delay Statistics for this Flight)

Total Flights Observed
27
Total Delays ( > 1 min )
14
Codeshares
0
Average Delay (min.)
54.357142857142854
Standard Deviation
69
Min
0
Max
264

UA 661 On-Time Performance Details

Overall Rating
0.5 of 5
Very Poor
Percentage On-Time 56%
Average Delay Time 54.357142857142854 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
0.1 of 5
Very Poor
Percentage On-Time 56%
This flight has an on-time performance of 56%. Statistically, when taking into consideration sample size, standard deviation, and mean, this flight is on-time more often than 3% of other flights.
Delay Performance
0.8 of 5
Poor
Average Delay Time 54.357142857142854 min
This flight has an average delay of 54.357142857142854 minutes with a standard deviation of 69 minutes. Statistically, when taking into consideration sample size, standard deviation, and mean, this flight has delay performance characteristics better than 16% of other flights.

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