United Airlines
Is UA4748 delayed?
Service date: · Scheduled departure date (UTC)
Arrived
15 min early
Official source · Updated
Departure
Sacramento
SMF
Actual
Scheduled 02:23
Sep 15
Arrival
San Francisco
SFO
Actual
Scheduled 20:03
Sep 14
Times shown in airport local time
Flight details
Departure · UTC
- Scheduled
- Estimated
- Not available
- Actual
Arrival · UTC
- Scheduled
- Estimated
- Actual
SMFSFO
Recent arrivals
Dates below are arrival dates in the destination airport’s time zone. The detailed history uses service dates.
- 15 min early
SMF → SFO
- 72 min late
SMF → SFO
- 4 min early
SMF → SFO
- 7 min early
SMF → SFO
- 40 min late
SMF → SFO
Flight history and details
Aug 17, 2026 — Sep 16, 2026
- Observed arrivals
- 7
- Arrivals over 15 minutes late
- 4
- Observed cancellations
- 0
- Observed occurrences
- 7
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 | Sacramento | San Francisco | -15 | |
| Sep 14, 2026Arrived | Sacramento | San Francisco | 72 | |
| Sep 11, 2026Arrived | Sacramento | San Francisco | -4 | |
| Sep 10, 2026Arrived | Sacramento | San Francisco | -7 | |
| Sep 8, 2026Arrived | Sacramento | San Francisco | 40 | |
| Sep 5, 2026Arrived | Sacramento | San Francisco | 39 | |
| Sep 3, 2026Arrived | Sacramento | San Francisco | 108 |