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(UA) United Airlines 5559 On-Time Performance Rating

Date Range:

01-Apr-2026 to 31-May-2026

(MKE) Milwaukee Mitchell International Airport

Milwaukee, WI, US

(ORD) Chicago O'Hare International Airport

Chicago, IL, US

On-Time Performance Chart

(using rounded numbers)
On-Time
16
76%
Late
1
5%
Very Late
1
5%
Excessive
2
10%
Cancelled
1
5%
Diverted
0
0%

Delay Statistics

(Aggregate Arrival Delay Statistics for this Flight)

Total Flights Observed
21
Total Delays ( > 1 min )
5
Codeshares
21
Average Delay (min.)
51.2
Standard Deviation
56.3
Min
0
Max
147

UA 5559 On-Time Performance Details

Overall Rating
1.5 of 5
Poor
Percentage On-Time 76%
Average Delay Time 51.2 min
FlightStats Rating is a merit measurement considering both on-time performance and delay severity. The score, 1.5 shows that this flight has on-time performance characteristics better than 29% of all other flights in the FlightStats database.
On-Time Performance Rating
1.9 of 5
Average
Percentage On-Time 76%
This flight has an on-time performance of 76%. Statistically, when taking into consideration sample size, standard deviation, and mean, this flight is on-time more often than 38% of other flights.
Delay Performance
1.1 of 5
Poor
Average Delay Time 51.2 min
This flight has an average delay of 51.2 minutes with a standard deviation of 56.3 minutes. Statistically, when taking into consideration sample size, standard deviation, and mean, this flight has delay performance characteristics better than 21% of other flights.

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