Is UA643 delayed?
No — UA643 landed in San Francisco 30 min early, at 06:56 on Oct 1 (as of Oct 1, 14:36 UTC).
Usually on time: arrived within 15 min of schedule on 74 of the last 81 flights.
Each route and date is shown separately. Confirm that both airports match your booking.
30 min early
Official source · Updated
Departure
Las Vegas
LAS
Scheduled
Not available
Arrival
San Francisco
SFO
Actual
Scheduled 07:26
Oct 1
Times shown in airport local time
Service date: · Scheduled arrival date; departure time unavailable (America/Los_Angeles)
Market settled: On time.
Think UA643 runs late on Oct 2? Delayed is trading at 17¢ — pays out x6.00.
Will United Airlines UAL 643 from San Francisco to Santa Ana arrive on time, be delayed, or be cancelled on Oct 2?Flight details
Departure · UTC
- Scheduled
- Not available
- Estimated
- Not available
- Actual
- Not available
Arrival · UTC
- Scheduled
- Estimated
- 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.
30 min early
Official source · Updated
Departure
San Francisco
SFO
Actual
Scheduled 10:43
Oct 1
Arrival
Santa Ana
SNA
Actual
Scheduled 12:03
Oct 1
Times shown in airport local time
Service date: · Scheduled departure date (America/Los_Angeles)
Flight details
Departure · UTC
- Scheduled
- Estimated
- Not available
- Actual
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.
83 min late
This update may be out of date. Check with your airline.
Update time unavailable
Departure
Santa Ana
SNA
Actual
Scheduled 15:27
Oct 1
Arrival
Houston
IAH
Scheduled
Oct 1
Times shown in airport local time
Service date: · Scheduled departure date (America/Los_Angeles)
Flight details
Departure · UTC
- Scheduled
- Estimated
- Not available
- Actual
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 OZ6339, OZ6341, AC5211, NH7315, NZ9237, VA8122
Recent arrivals
Dates below are arrival dates in the destination airport’s time zone. The detailed history uses service dates.
- 30 min early
San Francisco → Santa Ana
- 30 min early
Las Vegas → San Francisco
- 7 min early
Santa Ana → Houston
- 20 min early
San Francisco → Santa Ana
- 27 min early
Las Vegas → San Francisco
Is UA643 usually late?
Observation window: Sep 2, 2026 – Oct 2, 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
Las Vegas (LAS) departures
- Left more than 15 min late
- 144 of 297
- Cancelled today
- 4
San Francisco (SFO) departures
- Left more than 15 min late
- 218 of 409
- Cancelled today
- 3
Related flights
Flight history and details
| Service date | Departure | Arrival | Actual | Arrival delay (minutes) |
|---|---|---|---|---|
| Oct 1, 2026Arrived | San Francisco | Santa Ana | -30 | |
| Oct 1, 2026Arrived | Las Vegas | San Francisco | -30 | |
| Sep 30, 2026Arrived | Santa Ana | Houston | -7 | |
| Sep 30, 2026Arrived | San Francisco | Santa Ana | -20 | |
| Sep 30, 2026Arrived | Las Vegas | San Francisco | -27 | |
| Sep 29, 2026Arrived | Santa Ana | Houston | -26 | |
| Sep 29, 2026Arrived | San Francisco | Santa Ana | -28 | |
| Sep 28, 2026Arrived | Santa Ana | Houston | -28 | |
| Sep 28, 2026Arrived | San Francisco | Santa Ana | 5 | |
| Sep 28, 2026Arrived | Las Vegas | San Francisco | -30 | |
| Sep 27, 2026Arrived | Santa Ana | Houston | -29 | |
| Sep 27, 2026Arrived | San Francisco | Santa Ana | -15 | |
| Sep 27, 2026Arrived | Las Vegas | San Francisco | -26 | |
| Sep 26, 2026Arrived | Santa Ana | Houston | -37 | |
| Sep 26, 2026Arrived | San Francisco | Santa Ana | -8 | |
| Sep 25, 2026Arrived | Santa Ana | Houston | 18 | |
| Sep 25, 2026Arrived | San Francisco | Santa Ana | 1 | |
| Sep 25, 2026Arrived | Las Vegas | San Francisco | -27 | |
| Sep 24, 2026Arrived | Santa Ana | Houston | 20 | |
| Sep 24, 2026Arrived | San Francisco | Santa Ana | -11 | |
| Sep 24, 2026Arrived | Las Vegas | San Francisco | -23 | |
| Sep 23, 2026Arrived | Santa Ana | Houston | -28 | |
| Sep 23, 2026Arrived | San Francisco | Santa Ana | 11 | |
| Sep 23, 2026Arrived | Las Vegas | San Francisco | -32 | |
| Sep 22, 2026Arrived | Santa Ana | Houston | -15 | |
| Sep 22, 2026Arrived | San Francisco | Santa Ana | 98 | |
| Sep 22, 2026Arrived | Las Vegas | San Francisco | 6 | |
| Sep 21, 2026Arrived | Santa Ana | Houston | -23 | |
| Sep 21, 2026Arrived | San Francisco | Santa Ana | -7 | |
| Sep 21, 2026Arrived | Las Vegas | San Francisco | -25 | |
| Sep 20, 2026Arrived | Santa Ana | Houston | -8 | |
| Sep 20, 2026Arrived | San Francisco | Santa Ana | -14 | |
| Sep 20, 2026Arrived | Las Vegas | San Francisco | 7 | |
| Sep 19, 2026Arrived | Santa Ana | Houston | 7 | |
| Sep 19, 2026Arrived | San Francisco | Santa Ana | -16 | |
| Sep 19, 2026Arrived | Las Vegas | San Francisco | -18 | |
| Sep 18, 2026Arrived | Santa Ana | Houston | -11 | |
| Sep 18, 2026Arrived | San Francisco | Santa Ana | 15 | |
| Sep 18, 2026Arrived | Las Vegas | San Francisco | -20 | |
| Sep 17, 2026Arrived | Santa Ana | Houston | -13 | |
| Sep 17, 2026Arrived | San Francisco | Santa Ana | 18 | |
| Sep 17, 2026Arrived | Las Vegas | San Francisco | -13 | |
| Sep 16, 2026Arrived | Santa Ana | Houston | 9 | |
| Sep 16, 2026Arrived | San Francisco | Santa Ana | 24 | |
| Sep 16, 2026Arrived | Las Vegas | San Francisco | 9 | |
| Sep 15, 2026Arrived | Santa Ana | Houston | -14 | |
| Sep 15, 2026Arrived | San Francisco | Santa Ana | -25 | |
| Sep 15, 2026Arrived | Las Vegas | San Francisco | -26 | |
| Sep 14, 2026Arrived | Santa Ana | Houston | -20 | |
| Sep 14, 2026Arrived | Las Vegas | San Francisco | -22 | |
| Sep 13, 2026Arrived | Santa Ana | Houston | 0 | |
| Sep 13, 2026Arrived | Las Vegas | San Francisco | -20 | |
| Sep 12, 2026Arrived | Santa Ana | Houston | -16 | |
| Sep 12, 2026Arrived | San Francisco | Santa Ana | -2 | |
| Sep 12, 2026Arrived | Las Vegas | San Francisco | -22 | |
| Sep 11, 2026Arrived | Santa Ana | Houston | -22 | |
| Sep 11, 2026Arrived | Las Vegas | San Francisco | -26 | |
| Sep 10, 2026Arrived | Santa Ana | Houston | 0 | |
| Sep 10, 2026Arrived | San Francisco | Santa Ana | -14 | |
| Sep 10, 2026Arrived | Las Vegas | San Francisco | -26 | |
| Sep 9, 2026Arrived | Santa Ana | Houston | -20 | |
| Sep 9, 2026Arrived | San Francisco | Santa Ana | 66 | |
| Sep 9, 2026Arrived | Las Vegas | San Francisco | -22 | |
| Sep 8, 2026Arrived | Santa Ana | Houston | 7 | |
| Sep 8, 2026Arrived | San Francisco | Santa Ana | -25 | |
| Sep 8, 2026Arrived | Las Vegas | San Francisco | -25 | |
| Sep 7, 2026Arrived | Santa Ana | Houston | 4 | |
| Sep 7, 2026Arrived | San Francisco | Santa Ana | -21 | |
| Sep 7, 2026Arrived | Las Vegas | San Francisco | -26 | |
| Sep 6, 2026Arrived | Santa Ana | Houston | -10 | |
| Sep 6, 2026Arrived | San Francisco | Santa Ana | -14 | |
| Sep 6, 2026Arrived | Las Vegas | San Francisco | -26 | |
| Sep 5, 2026Arrived | Santa Ana | Houston | 101 | |
| Sep 5, 2026Arrived | San Francisco | Santa Ana | -18 | |
| Sep 5, 2026Arrived | Las Vegas | San Francisco | -21 | |
| Sep 4, 2026Arrived | Santa Ana | Houston | -2 | |
| Sep 4, 2026Arrived | San Francisco | Santa Ana | -16 | |
| Sep 4, 2026Arrived | Las Vegas | San Francisco | -15 | |
| Sep 3, 2026Arrived | Las Vegas | San Francisco | -31 | |
| Sep 2, 2026Arrived | San Francisco | Santa Ana | -34 | |
| Sep 2, 2026Arrived | Las Vegas | San Francisco | -30 |
Email me if UA643 runs late
We email you if your next UA643 flight in the coming day is more than 15 minutes late, cancelled or diverted. Alerts last 30 days. No account needed.