(UA) United Airlines 1321 On-Time Performance Rating

Date Range:

15-Aug-2026 to 15-Oct-2026

(SFO) San Francisco International Airport

San Francisco, CA, US

(FCA) Glacier Park International Airport

Kalispell, MT, US

On-Time Performance Chart

(using rounded numbers)

On-Time

50%

Late

Very Late

25%

Excessive

25%

Cancelled

Diverted

Delay Statistics

(Aggregate Arrival Delay Statistics for this Flight)

Total Flights Observed

Total Delays ( > 1 min )

Codeshares

Average Delay (min.)

53.5

Standard Deviation

21.9

Min

Max

UA 1321 On-Time Performance Details

Overall Rating

1.0 of 5

Poor

Percentage On-Time 50%

Average Delay Time 53.5 min

FlightStats Rating is a merit measurement considering both on-time performance and delay severity. The score, 1 shows that this flight has on-time performance characteristics better than 18% of all other flights in the FlightStats database.

On-Time Performance Rating

0.5 of 5

Very Poor

Percentage On-Time 50%

This flight has an on-time performance of 50%. 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

1.4 of 5

Poor

Average Delay Time 53.5 min

This flight has an average delay of 53.5 minutes with a standard deviation of 21.9 minutes. Statistically, when taking into consideration sample size, standard deviation, and mean, this flight has delay performance characteristics better than 27% of other flights.