(UA) United Airlines 5566 On-Time Performance Rating

Date Range:

15-Aug-2026 to 15-Oct-2026

(SFO) San Francisco International Airport

San Francisco, CA, US

(FAT) Fresno Yosemite International Airport

Fresno, CA, US

On-Time Performance Chart

(using rounded numbers)

On-Time

55%

Late

14%

Very Late

Excessive

32%

Cancelled

Diverted

Delay Statistics

(Aggregate Arrival Delay Statistics for this Flight)

Total Flights Observed

Total Delays ( > 1 min )

Codeshares

Average Delay (min.)

53.53846153846154

Standard Deviation

41.6

Min

Max

111

UA 5566 On-Time Performance Details

Overall Rating

0.2 of 5

Very Poor

Percentage On-Time 55%

Average Delay Time 53.53846153846154 min

FlightStats Rating is a merit measurement considering both on-time performance and delay severity. The score, 0.2 shows that this flight has on-time performance characteristics better than 3% of all other flights in the FlightStats database.

On-Time Performance Rating

0.0 of 5

Very Poor

Percentage On-Time 55%

This flight has an on-time performance of 55%. Statistically, when taking into consideration sample size, standard deviation, and mean, this flight is on-time more often than 0% of other flights.

Delay Performance

0.4 of 5

Very Poor

Average Delay Time 53.53846153846154 min

This flight has an average delay of 53.53846153846154 minutes with a standard deviation of 41.6 minutes. Statistically, when taking into consideration sample size, standard deviation, and mean, this flight has delay performance characteristics better than 8% of other flights.