Is UA1387 delayed?
No delay reported — UA1387 is expected in San Francisco at 09:30 on Sep 30, as scheduled.
Usually on time: arrived within 15 min of schedule on 22 of the last 33 flights.
Each route and date is shown separately. Confirm that both airports match your booking.
On time
This update may be out of date. Check with your airline.
Update time unavailable
Departure
Ontario
ONT
Scheduled
Not available
Arrival
San Francisco
SFO
Estimated
Sep 30
Times shown in airport local time
Service date: · Scheduled arrival date; departure time unavailable (America/Los_Angeles)
Think UA1387 runs late today? Delayed is trading at 23¢ — pays out x4.30.
Will United Airlines UA 1387 from Ontario to San Francisco arrive on time, be delayed, or be cancelled on Sep 30?Flight details
Departure · UTC
- Scheduled
- Not available
- Estimated
- Not available
- Actual
- Not available
Arrival · UTC
- Scheduled
- Estimated
- Actual
- Not available
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.
No live update yet
Showing the published schedule until live times are reported.
Update time unavailable
Departure
San Francisco
SFO
Scheduled
Sep 30
Arrival
Houston
IAH
Scheduled
Sep 30
Times shown in airport local time
Service date: · Scheduled departure date (America/Los_Angeles)
Flight details
Departure · UTC
- Scheduled
- Estimated
- Not available
- Actual
- Not available
Arrival · UTC
- Scheduled
- Estimated
- Not available
- Actual
- Not available
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.
Also sold as AC4080, AC4121, AC4285
Recent arrivals
Dates below are arrival dates in the destination airport’s time zone. The detailed history uses service dates.
- 16 min early
San Francisco → Houston
- 11 min early
Ontario → San Francisco
- 60 min late
Ontario → San Francisco
- 111 min late
Ontario → San Francisco
- <1 min early
San Francisco → Houston
Is UA1387 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
- 6 of 34
- Cancelled today
- 0
Related flights
Flight history and details
| Service date | Departure | Arrival | Actual | Arrival delay (minutes) |
|---|---|---|---|---|
| Sep 29, 2026Arrived | San Francisco | Houston | -16 | |
| Sep 29, 2026Arrived | Ontario | San Francisco | -11 | |
| Sep 28, 2026Arrived | Ontario | San Francisco | 60 | |
| Sep 27, 2026Arrived | Ontario | San Francisco | 111 | |
| Sep 26, 2026Arrived | San Francisco | Houston | 0 | |
| Sep 26, 2026Arrived | Ontario | San Francisco | -5 | |
| Sep 25, 2026Arrived | San Francisco | Houston | 30 | |
| Sep 25, 2026Arrived | Ontario | San Francisco | 51 | |
| Sep 24, 2026Arrived | San Francisco | Houston | 15 | |
| Sep 23, 2026Arrived | San Francisco | Houston | 13 | |
| Sep 22, 2026Arrived | San Francisco | Houston | -7 | |
| Sep 21, 2026Arrived | San Francisco | Houston | 33 | |
| Sep 20, 2026Arrived | San Francisco | Houston | 8 | |
| Sep 19, 2026Arrived | San Francisco | Houston | -24 | |
| Sep 18, 2026Arrived | San Francisco | Houston | -4 | |
| Sep 17, 2026Arrived | San Francisco | Houston | -5 | |
| Sep 16, 2026Arrived | San Francisco | Houston | 33 | |
| Sep 15, 2026Arrived | San Francisco | Houston | 16 | |
| Sep 14, 2026Arrived | San Francisco | Houston | 48 | |
| Sep 13, 2026Arrived | San Francisco | Houston | -1 | |
| Sep 12, 2026Arrived | San Francisco | Houston | -11 | |
| Sep 11, 2026Arrived | San Francisco | Houston | -8 | |
| Sep 10, 2026Arrived | San Francisco | Houston | 14 | |
| Sep 9, 2026Arrived | San Francisco | Houston | 9 | |
| Sep 8, 2026Arrived | San Francisco | Houston | -9 | |
| Sep 7, 2026Arrived | San Francisco | Houston | 50 | |
| Sep 6, 2026Arrived | Houston | Dulles | -6 | |
| Sep 6, 2026Arrived | San Francisco | Houston | 11 | |
| Sep 5, 2026Arrived | San Francisco | Houston | -4 | |
| Sep 4, 2026Arrived | Houston | Dulles | -6 | |
| Sep 4, 2026Arrived | San Francisco | Houston | 31 | |
| Sep 3, 2026Arrived | San Francisco | Houston | -17 | |
| Sep 2, 2026Arrived | San Francisco | Houston | -10 |
Email me if UA1387 runs late
We email you if your next UA1387 flight in the coming day is more than 15 minutes late, cancelled or diverted. Alerts last 30 days. No account needed.