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(UA) United Airlines 604 On-Time Performance Rating

Date Range:

15-Feb-2026 to 15-Apr-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
30
86%
Late
4
11%
Very Late
0
0%
Excessive
0
0%
Cancelled
0
0%
Diverted
1
3%

Delay Statistics

(Aggregate Arrival Delay Statistics for this Flight)

Total Flights Observed
34
Total Delays ( > 1 min )
11
Codeshares
0
Average Delay (min.)
8.363636363636363
Standard Deviation
7.6
Min
0
Max
22

UA 604 On-Time Performance Details

Overall Rating
4.7 of 5
Very Good
Percentage On-Time 88%
Average Delay Time 8.363636363636363 min
FlightStats Rating is a merit measurement considering both on-time performance and delay severity. The score, 4.7 shows that this flight has on-time performance characteristics better than 92% of all other flights in the FlightStats database.
On-Time Performance Rating
4.7 of 5
Very Good
Percentage On-Time 88%
This flight has an on-time performance of 88%. Statistically, when taking into consideration sample size, standard deviation, and mean, this flight is on-time more often than 93% of other flights.
Delay Performance
4.6 of 5
Very Good
Average Delay Time 8.363636363636363 min
This flight has an average delay of 8.363636363636363 minutes with a standard deviation of 7.6 minutes. Statistically, when taking into consideration sample size, standard deviation, and mean, this flight has delay performance characteristics better than 92% of other flights.

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