Is UA393 delayed?
No — UA393 landed in Ontario 15 min early, at 17:23 on Sep 29 (as of Sep 30, 00:23 UTC).
Usually on time: arrived within 15 min of schedule on 18 of the last 23 flights.
15 min early
Official source · Updated
Departure
San Francisco
SFO
Scheduled
Sep 29
Arrival
Ontario
ONT
Actual
Scheduled 17:38
Sep 29
Times shown in airport local time
Service date: · Scheduled departure date (America/Los_Angeles)
Market settled: On time.
Flight details
Departure · UTC
- Scheduled
- Estimated
- Not available
- Actual
- Not available
Arrival · UTC
- Scheduled
- Estimated
- Not available
- Actual
Market prices express trading expectations about a contract’s stated threshold. They do not confirm airline status. The linked market shows its terms and activity.
Recent arrivals
Dates below are arrival dates in the destination airport’s time zone. The detailed history uses service dates.
- 15 min early
San Francisco → Ontario
- 28 min late
Orlando → Denver
- 22 min late
Nashville → Denver
- 4 min early
San Francisco → Ontario
- 18 min early
Orlando → Denver
Is UA393 usually late?
Observation window: Aug 31, 2026 – Sep 30, 2026
On time means arriving no more than 15 minutes after the scheduled time; late means more than 15 minutes after. Cancelled and diverted flights are counted apart from arrivals. Results compare scheduled and actual arrival times. Cancelled or diverted flights are excluded. Some flights may be missing from the history.
At the airports today
San Francisco (SFO) departures
- Left more than 15 min late
- 111 of 306
- Cancelled today
- 2
Related flights
Flight history and details
| Service date | Departure | Arrival | Actual | Arrival delay (minutes) |
|---|---|---|---|---|
| Sep 29, 2026Arrived | San Francisco | Ontario | -15 | |
| Sep 28, 2026Arrived | Orlando | Denver | 28 | |
| Sep 27, 2026Arrived | Nashville | Denver | 22 | |
| Sep 26, 2026Arrived | San Francisco | Ontario | -4 | |
| Sep 25, 2026Arrived | Orlando | Denver | -18 | |
| Sep 24, 2026Arrived | Nashville | Denver | -24 | |
| Sep 23, 2026Arrived | San Francisco | Sacramento | -13 | |
| Sep 22, 2026Arrived | San Francisco | Sacramento | -21 | |
| Sep 21, 2026Arrived | Arcata/Eureka | Los Angeles | 18 | |
| Sep 20, 2026Arrived | Arcata/Eureka | Los Angeles | -13 | |
| Sep 19, 2026Arrived | San Francisco | Sacramento | -7 | |
| Sep 18, 2026Arrived | Arcata/Eureka | Los Angeles | 29 | |
| Sep 17, 2026Arrived | Arcata/Eureka | Los Angeles | -9 | |
| Sep 16, 2026Arrived | San Francisco | Sacramento | 4 | |
| Sep 15, 2026Arrived | San Francisco | Sacramento | -7 | |
| Sep 14, 2026Arrived | Arcata/Eureka | Los Angeles | -5 | |
| Sep 13, 2026Cancelled | Arcata/Eureka | Los Angeles | Not available | Not available |
| Sep 12, 2026Arrived | San Francisco | Sacramento | 42 | |
| Sep 11, 2026Arrived | Arcata/Eureka | Los Angeles | -16 | |
| Sep 10, 2026Cancelled | Arcata/Eureka | Los Angeles | Not available | Not available |
| Sep 9, 2026Arrived | San Francisco | Sacramento | -8 | |
| Sep 8, 2026Arrived | San Francisco | Sacramento | -14 | |
| Sep 7, 2026Arrived | Arcata/Eureka | Los Angeles | -10 | |
| Sep 6, 2026Arrived | Arcata/Eureka | Los Angeles | -2 | |
| Sep 4, 2026Arrived | Arcata/Eureka | Los Angeles | -10 |
Email me if UA393 runs late
We email you if your next UA393 flight in the coming day is more than 15 minutes late, cancelled or diverted. Alerts last 30 days. No account needed.