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(UA) United Airlines 4521 On-Time Performance Rating

Date Range:

15-Nov-2025 to 15-Jan-2026

(ORD) Chicago O'Hare International Airport

Chicago, IL, US

(CID) The Eastern Iowa Airport

Cedar Rapids, IA, US

On-Time Performance Chart

(using rounded numbers)
On-Time
1
100%
Late
0
0%
Very Late
0
0%
Excessive
0
0%
Cancelled
0
0%
Diverted
0
0%

Delay Statistics

(Aggregate Arrival Delay Statistics for this Flight)

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

UA 4521 On-Time Performance Details

Overall Rating
3.5 of 5
Average
Percentage On-Time 100%
Average Delay Time 11 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 68% of all other flights in the FlightStats database.
On-Time Performance Rating
3.6 of 5
Good
Percentage On-Time 100%
This flight has an on-time performance of 100%. Statistically, when taking into consideration sample size, standard deviation, and mean, this flight is on-time more often than 73% of other flights.
Delay Performance
3.3 of 5
Average
Average Delay Time 11 min
This flight has an average delay of 11 minutes with a standard deviation of 0 minutes. Statistically, when taking into consideration sample size, standard deviation, and mean, this flight has delay performance characteristics better than 66% of other flights.

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