United Airlines
Is UA643 delayed?
No delay reported yet. UA643 is scheduled to leave Las Vegas at 06:16 on Nov 14 and reach San Francisco at 07:39 (as of Nov 14, 14:26 UTC).
Usually on time: arrived within 15 min of schedule on 60 of the last 67 flights.
Each route and date is shown separately. Confirm that both airports match your booking.
No live update yet
Showing the published schedule until live times come in.
Update time unavailable
Departure
Las Vegas
LAS
Scheduled
Nov 14
Arrival
San Francisco
SFO
Scheduled
Nov 14
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
No live update yet
Showing the published schedule until live times come in.
Update time unavailable
Departure
San Francisco
SFO
Scheduled
Nov 14
Arrival
Santa Ana
SNA
Scheduled
Nov 14
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
No live update yet
Showing the published schedule until live times come in.
Update time unavailable
Departure
Santa Ana
SNA
Scheduled
Nov 14
Arrival
Houston
IAH
Scheduled
Nov 14
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
Also sold as OZ6339, OZ6341, AC5211, NH7315, NZ9237, CA7252, VA8122
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 → Santa Ana
- 3 min early
Las Vegas → San Francisco
- 5 min early
Santa Ana → Houston
- 9 min early
San Francisco → Santa Ana
- 25 min early
Las Vegas → San Francisco
Is UA643 usually late?
Period: Oct 15, 2026 – Nov 14, 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. Compares scheduled and actual arrival times. Cancelled and diverted flights are left out. Some flights may be missing.
At the airports today
Las Vegas (LAS) departures
- Left more than 15 min late
- 8 of 20
- Cancelled today
- 30
San Francisco (SFO) departures
- Left more than 15 min late
- 25 of 32
- Cancelled today
- 38
Related flights
Flight history and details
| Service date | Departure | Arrival | Actual | Arrival delay (minutes) |
|---|---|---|---|---|
| Nov 13, 2026Cancelled | Santa Ana | Houston | Not available | Not available |
| Nov 13, 2026Arrived | San Francisco | Santa Ana | -15 | |
| Nov 13, 2026Arrived | Las Vegas | San Francisco | -3 | |
| Nov 12, 2026Arrived | Santa Ana | Houston | -5 | |
| Nov 12, 2026Arrived | San Francisco | Santa Ana | -9 | |
| Nov 12, 2026Arrived | Las Vegas | San Francisco | -25 | |
| Nov 11, 2026Arrived | Santa Ana | Houston | -14 | |
| Nov 11, 2026Arrived | San Francisco | Santa Ana | 63 | |
| Nov 11, 2026Arrived | Las Vegas | San Francisco | -28 | |
| Nov 10, 2026Arrived | Santa Ana | Houston | -22 | |
| Nov 10, 2026Arrived | San Francisco | Santa Ana | 31 | |
| Nov 10, 2026Arrived | Las Vegas | San Francisco | -13 | |
| Nov 9, 2026Arrived | Santa Ana | Houston | -8 | |
| Nov 9, 2026Arrived | San Francisco | Santa Ana | -10 | |
| Nov 9, 2026Arrived | Las Vegas | San Francisco | -15 | |
| Nov 8, 2026Arrived | Santa Ana | Houston | -12 | |
| Nov 8, 2026Arrived | San Francisco | Santa Ana | -4 | |
| Nov 8, 2026Arrived | Las Vegas | San Francisco | -18 | |
| Nov 7, 2026Arrived | Santa Ana | Houston | -8 | |
| Nov 7, 2026Arrived | San Francisco | Santa Ana | -21 | |
| Nov 7, 2026Arrived | Las Vegas | San Francisco | -16 | |
| Nov 6, 2026Arrived | Santa Ana | Houston | 70 | |
| Nov 6, 2026Arrived | San Francisco | Santa Ana | -15 | |
| Nov 6, 2026Arrived | Las Vegas | San Francisco | -18 | |
| Nov 5, 2026Arrived | Santa Ana | Houston | -27 | |
| Nov 5, 2026Arrived | San Francisco | Santa Ana | 9 | |
| Nov 5, 2026Arrived | Las Vegas | San Francisco | -22 | |
| Nov 4, 2026Arrived | Santa Ana | Houston | -26 | |
| Nov 4, 2026Arrived | San Francisco | Santa Ana | -13 | |
| Nov 4, 2026Arrived | Las Vegas | San Francisco | -16 | |
| Nov 3, 2026Arrived | Santa Ana | Houston | 45 | |
| Nov 3, 2026Arrived | San Francisco | Santa Ana | -8 | |
| Nov 2, 2026Arrived | Santa Ana | Houston | -16 | |
| Nov 2, 2026Arrived | San Francisco | Santa Ana | -6 | |
| Nov 1, 2026Arrived | Santa Ana | Houston | -12 | |
| Nov 1, 2026Arrived | San Francisco | Santa Ana | 4 | |
| Oct 31, 2026Arrived | Santa Ana | Houston | -33 | |
| Oct 31, 2026Arrived | San Francisco | Santa Ana | -2 | |
| Oct 30, 2026Arrived | Santa Ana | Houston | -27 | |
| Oct 30, 2026Arrived | San Francisco | Santa Ana | -5 | |
| Oct 29, 2026Arrived | Santa Ana | Houston | 87 | |
| Oct 29, 2026Arrived | San Francisco | Santa Ana | 7 | |
| Oct 28, 2026Arrived | Santa Ana | Houston | -17 | |
| Oct 28, 2026Arrived | Las Vegas | San Francisco | Not available | |
| Oct 27, 2026Arrived | Santa Ana | Houston | -17 | |
| Oct 27, 2026Arrived | San Francisco | Santa Ana | -12 | |
| Oct 26, 2026Arrived | Santa Ana | Houston | -20 | |
| Oct 26, 2026Arrived | San Francisco | Santa Ana | -3 | |
| Oct 25, 2026Arrived | Santa Ana | Houston | -12 | |
| Oct 25, 2026Arrived | San Francisco | Santa Ana | -5 | |
| Oct 24, 2026Arrived | Santa Ana | Houston | -17 | |
| Oct 24, 2026Arrived | San Francisco | Santa Ana | -18 | |
| Oct 23, 2026Arrived | Santa Ana | Houston | -17 | |
| Oct 23, 2026Arrived | San Francisco | Santa Ana | -14 | |
| Oct 22, 2026Arrived | Santa Ana | Houston | -22 | |
| Oct 21, 2026Arrived | Santa Ana | Houston | -27 | |
| Oct 21, 2026Arrived | San Francisco | Santa Ana | -9 | |
| Oct 20, 2026Arrived | Santa Ana | Houston | -33 | |
| Oct 20, 2026Arrived | San Francisco | Santa Ana | -21 | |
| Oct 19, 2026Arrived | Santa Ana | Houston | -4 | |
| Oct 19, 2026Arrived | San Francisco | Santa Ana | 27 | |
| Oct 18, 2026Arrived | Santa Ana | Houston | -12 | |
| Oct 18, 2026Arrived | San Francisco | Santa Ana | -20 | |
| Oct 17, 2026Arrived | Santa Ana | Houston | -19 | |
| Oct 17, 2026Arrived | San Francisco | Santa Ana | -22 | |
| Oct 16, 2026Arrived | Santa Ana | Houston | -15 | |
| Oct 16, 2026Arrived | San Francisco | Santa Ana | 2 | |
| Oct 15, 2026Arrived | Santa Ana | Houston | 22 | |
| Oct 15, 2026Arrived | San Francisco | Santa Ana | -20 |