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(UA) United Airlines 604 On-Time Performance Rating

Date Range:

15-May-2026 to 15-Jul-2026

(SFO) San Francisco International Airport

San Francisco, CA, US

(IAH) Houston George Bush Intercontinental Airport

Houston, TX, US

On-Time Performance Chart

(using rounded numbers)
On-Time
52
80%
Late
4
6%
Very Late
2
3%
Excessive
3
5%
Cancelled
0
0%
Diverted
4
6%

Delay Statistics

(Aggregate Arrival Delay Statistics for this Flight)

Total Flights Observed
61
Total Delays ( > 1 min )
19
Codeshares
0
Average Delay (min.)
58.31578947368421
Standard Deviation
146.3
Min
0
Max
645

UA 604 On-Time Performance Details

Overall Rating
2.6 of 5
Average
Percentage On-Time 85%
Average Delay Time 58.31578947368421 min
FlightStats Rating is a merit measurement considering both on-time performance and delay severity. The score, 2.6 shows that this flight has on-time performance characteristics better than 51% of all other flights in the FlightStats database.
On-Time Performance Rating
4.9 of 5
Very Good
Percentage On-Time 85%
This flight has an on-time performance of 85%. Statistically, when taking into consideration sample size, standard deviation, and mean, this flight is on-time more often than 97% of other flights.
Delay Performance
0.3 of 5
Very Poor
Average Delay Time 58.31578947368421 min
This flight has an average delay of 58.31578947368421 minutes with a standard deviation of 146.3 minutes. Statistically, when taking into consideration sample size, standard deviation, and mean, this flight has delay performance characteristics better than 5% of other flights.

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