Is UA643 delayed?
Each route and date is shown separately. Confirm that both airports match your booking.
Service date: · Scheduled departure date (America/Los_Angeles)
Arrived
34 min early
Official source · Updated
Departure
San Francisco
SFO
Actual
Scheduled 10:20
Sep 2
Arrival
Santa Ana
SNA
Actual
Scheduled 19:06
Sep 2
Times shown in airport local time
Flight details
Departure · UTC
- Scheduled
- Estimated
- Actual
Arrival · UTC
- Scheduled
- Estimated
- Actual
Service date: · Scheduled departure date (America/Los_Angeles)
Arrived
30 min early
Official source · Updated
Departure
Las Vegas
LAS
Actual
Scheduled 06:00
Sep 2
Arrival
San Francisco
SFO
Actual
Scheduled 07:40
Sep 2
Times shown in airport local time
Flight details
Departure · UTC
- Scheduled
- Estimated
- Actual
Arrival · UTC
- Scheduled
- Estimated
- Actual
SFOSNA
Recent arrivals
Dates below are arrival dates in the destination airport’s time zone. The detailed history uses service dates.
- 14 min early
SNA → IAH
- 25 min early
SFO → SNA
- 26 min early
LAS → SFO
- 20 min early
SNA → IAH
- 22 min early
LAS → SFO
Flight history and details
Aug 17, 2026 — Sep 16, 2026
- Observed arrivals
- 49
- Arrivals over 15 minutes late
- 2
- Observed cancellations
- 2
- Observed occurrences
- 72
Results compare scheduled and actual arrival times. Cancelled or diverted flights are excluded. Some flights may be missing from the history.
| Service date | Departure | Arrival | Actual | Arrival delay (minutes) |
|---|---|---|---|---|
| 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 | |
| Sep 1, 2026Arrived | Las Vegas | San Francisco | -30 | |
| Aug 31, 2026Arrived | Las Vegas | San Francisco | -29 | |
| Aug 30, 2026Arrived | Las Vegas | San Francisco | -22 | |
| Aug 29, 2026Arrived | Las Vegas | San Francisco | -21 | |
| Aug 28, 2026Arrived | Las Vegas | San Francisco | -18 | |
| Aug 27, 2026Arrived | Las Vegas | San Francisco | -29 | |
| Aug 26, 2026Arrived | Las Vegas | San Francisco | -25 | |
| Aug 25, 2026Arrived | Las Vegas | San Francisco | -26 | |
| Aug 24, 2026Arrived | Las Vegas | San Francisco | -27 | |
| Aug 23, 2026Arrived | Las Vegas | San Francisco | -25 | |
| Aug 21, 2026Arrived | Las Vegas | San Francisco | -22 | |
| Aug 20, 2026Cancelled | Las Vegas | San Francisco | Not available | Not available |
| Aug 20, 2026Cancelled | Las Vegas | Not available | Not available |