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(UA) United Airlines 2166 On-Time Performance Rating

Date Range:

01-Dec-2025 to 31-Jan-2026

(ORD) Chicago O'Hare International Airport

Chicago, IL, US

(SFO) San Francisco International Airport

San Francisco, CA, US

On-Time Performance Chart

(using rounded numbers)
On-Time
27
84%
Late
2
6%
Very Late
0
0%
Excessive
2
6%
Cancelled
0
0%
Diverted
1
3%

Delay Statistics

(Aggregate Arrival Delay Statistics for this Flight)

Total Flights Observed
31
Total Delays ( > 1 min )
8
Codeshares
0
Average Delay (min.)
44
Standard Deviation
71.2
Min
0
Max
211

UA 2166 On-Time Performance Details

Overall Rating
3.2 of 5
Average
Percentage On-Time 87%
Average Delay Time 44 min
FlightStats Rating is a merit measurement considering both on-time performance and delay severity. The score, 3.2 shows that this flight has on-time performance characteristics better than 62% of all other flights in the FlightStats database.
On-Time Performance Rating
4.8 of 5
Very Good
Percentage On-Time 87%
This flight has an on-time performance of 87%. Statistically, when taking into consideration sample size, standard deviation, and mean, this flight is on-time more often than 96% of other flights.
Delay Performance
1.5 of 5
Poor
Average Delay Time 44 min
This flight has an average delay of 44 minutes with a standard deviation of 71.2 minutes. Statistically, when taking into consideration sample size, standard deviation, and mean, this flight has delay performance characteristics better than 31% of other flights.

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