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(UA) United Airlines 5566 On-Time Performance Rating

Date Range:

15-Aug-2026 to 15-Oct-2026

(STL) St Louis Lambert International Airport

Saint Louis, MO, US

(IAH) Houston George Bush Intercontinental Airport

Houston, TX, US

On-Time Performance Chart

(using rounded numbers)
On-Time
11
69%
Late
1
6%
Very Late
0
0%
Excessive
4
25%
Cancelled
0
0%
Diverted
0
0%

Delay Statistics

(Aggregate Arrival Delay Statistics for this Flight)

Total Flights Observed
16
Total Delays ( > 1 min )
5
Codeshares
16
Average Delay (min.)
58.2
Standard Deviation
33.8
Min
0
Max
109

UA 5566 On-Time Performance Details

Overall Rating
0.9 of 5
Poor
Percentage On-Time 69%
Average Delay Time 58.2 min
FlightStats Rating is a merit measurement considering both on-time performance and delay severity. The score, 0.9 shows that this flight has on-time performance characteristics better than 17% of all other flights in the FlightStats database.
On-Time Performance Rating
1.1 of 5
Poor
Percentage On-Time 69%
This flight has an on-time performance of 69%. Statistically, when taking into consideration sample size, standard deviation, and mean, this flight is on-time more often than 21% of other flights.
Delay Performance
0.7 of 5
Poor
Average Delay Time 58.2 min
This flight has an average delay of 58.2 minutes with a standard deviation of 33.8 minutes. Statistically, when taking into consideration sample size, standard deviation, and mean, this flight has delay performance characteristics better than 14% of other flights.

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