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(UA) United Airlines 646 On-Time Performance Rating

Date Range:

15-May-2026 to 15-Jul-2026

(IAH) Houston George Bush Intercontinental Airport

Houston, TX, US

(SLP) Ponciano Arriaga International Airport

San Luis Potosi, MX

On-Time Performance Chart

(using rounded numbers)
On-Time
38
67%
Late
8
14%
Very Late
2
4%
Excessive
8
14%
Cancelled
0
0%
Diverted
1
2%

Delay Statistics

(Aggregate Arrival Delay Statistics for this Flight)

Total Flights Observed
56
Total Delays ( > 1 min )
27
Codeshares
0
Average Delay (min.)
45.666666666666664
Standard Deviation
66.9
Min
0
Max
302

UA 646 On-Time Performance Details

Overall Rating
0.7 of 5
Poor
Percentage On-Time 68%
Average Delay Time 45.666666666666664 min
FlightStats Rating is a merit measurement considering both on-time performance and delay severity. The score, 0.7 shows that this flight has on-time performance characteristics better than 13% of all other flights in the FlightStats database.
On-Time Performance Rating
0.5 of 5
Very Poor
Percentage On-Time 68%
This flight has an on-time performance of 68%. Statistically, when taking into consideration sample size, standard deviation, and mean, this flight is on-time more often than 10% of other flights.
Delay Performance
0.9 of 5
Poor
Average Delay Time 45.666666666666664 min
This flight has an average delay of 45.666666666666664 minutes with a standard deviation of 66.9 minutes. Statistically, when taking into consideration sample size, standard deviation, and mean, this flight has delay performance characteristics better than 18% of other flights.

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