background

(UA) United Airlines 499 On-Time Performance Rating

Date Range:

15-Feb-2026 to 15-Apr-2026

(SEA) Seattle-Tacoma International Airport

Seattle, WA, US

(SFO) San Francisco International Airport

San Francisco, CA, US

On-Time Performance Chart

(using rounded numbers)
On-Time
28
70%
Late
5
13%
Very Late
4
10%
Excessive
3
8%
Cancelled
0
0%
Diverted
0
0%

Delay Statistics

(Aggregate Arrival Delay Statistics for this Flight)

Total Flights Observed
40
Total Delays ( > 1 min )
21
Codeshares
0
Average Delay (min.)
30.333333333333332
Standard Deviation
36.4
Min
0
Max
153

UA 499 On-Time Performance Details

Overall Rating
1.8 of 5
Average
Percentage On-Time 70%
Average Delay Time 30.333333333333332 min
FlightStats Rating is a merit measurement considering both on-time performance and delay severity. The score, 1.8 shows that this flight has on-time performance characteristics better than 35% of all other flights in the FlightStats database.
On-Time Performance Rating
0.7 of 5
Poor
Percentage On-Time 70%
This flight has an on-time performance of 70%. Statistically, when taking into consideration sample size, standard deviation, and mean, this flight is on-time more often than 14% of other flights.
Delay Performance
2.9 of 5
Average
Average Delay Time 30.333333333333332 min
This flight has an average delay of 30.333333333333332 minutes with a standard deviation of 36.4 minutes. Statistically, when taking into consideration sample size, standard deviation, and mean, this flight has delay performance characteristics better than 58% of other flights.

Other Stops for UA 499