United Airlines
Is UA1230 delayed?
No delay reported yet. UA1230 is scheduled to leave San Francisco at 14:46 on Nov 14 and reach Denver at 17:51 (as of Nov 14, 16:04 UTC).
Usually on time: arrived within 15 min of schedule on 28 of the last 37 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
San Francisco
SFO
Scheduled
Nov 14
Arrival
Denver
DEN
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
Denver
DEN
Scheduled
Nov 14
Arrival
Great Falls
GTF
Scheduled
Nov 14
Times shown in airport local time
Service date: · Scheduled departure date (America/Denver)
Flight details
Departure · UTC
- Scheduled
- Estimated
- Not available
- Actual
- Not available
Arrival · UTC
- Scheduled
- Estimated
- Not available
- Actual
- Not available
Also sold as AC3302, AC3426, NZ9878, CM1125
Recent arrivals
Dates below are arrival dates in the destination airport’s time zone. The detailed history uses service dates.
- 31 min early
Denver → Great Falls
- 16 min late
San Francisco → Denver
- 18 min early
Denver → Great Falls
- 12 min early
San Francisco → Denver
- 18 min early
Denver → Great Falls
Is UA1230 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
San Francisco (SFO) departures
- Left more than 15 min late
- 25 of 47
- Cancelled today
- 41
Denver (DEN) departures
- Left more than 15 min late
- 29 of 68
- Cancelled today
- 52
Related flights
Flight history and details
| Service date | Departure | Arrival | Actual | Arrival delay (minutes) |
|---|---|---|---|---|
| Nov 13, 2026Cancelled | Denver | Great Falls | Not available | Not available |
| Nov 13, 2026Cancelled | San Francisco | Denver | Not available | Not available |
| Nov 12, 2026Arrived | Denver | Great Falls | -31 | |
| Nov 12, 2026Arrived | San Francisco | Denver | 16 | |
| Nov 11, 2026Arrived | Denver | Great Falls | -18 | |
| Nov 11, 2026Arrived | San Francisco | Denver | -12 | |
| Nov 10, 2026Arrived | Denver | Great Falls | -18 | |
| Nov 10, 2026Arrived | San Francisco | Denver | -5 | |
| Nov 9, 2026Arrived | Denver | Great Falls | -12 | |
| Nov 9, 2026Arrived | San Francisco | Denver | 119 | |
| Nov 8, 2026Arrived | Denver | Great Falls | 2 | |
| Nov 8, 2026Arrived | San Francisco | Denver | 5 | |
| Nov 7, 2026Arrived | Denver | Great Falls | -19 | |
| Nov 7, 2026Arrived | San Francisco | Denver | -14 | |
| Nov 6, 2026Arrived | San Francisco | Denver | 16 | |
| Nov 5, 2026Arrived | Denver | Great Falls | -1 | |
| Nov 5, 2026Arrived | San Francisco | Denver | -5 | |
| Nov 4, 2026Arrived | Denver | Great Falls | -22 | |
| Nov 4, 2026Arrived | San Francisco | Denver | -14 | |
| Nov 3, 2026Arrived | Denver | Great Falls | -2 | |
| Nov 3, 2026Arrived | San Francisco | Denver | 131 | |
| Nov 2, 2026Arrived | Denver | Great Falls | 80 | |
| Nov 2, 2026Arrived | San Francisco | Denver | -6 | |
| Nov 1, 2026Arrived | Denver | Great Falls | 31 | |
| Nov 1, 2026Arrived | San Francisco | Denver | 13 | |
| Oct 31, 2026Arrived | Denver | Great Falls | -5 | |
| Oct 31, 2026Arrived | San Francisco | Denver | -9 | |
| Oct 30, 2026Arrived | Denver | Great Falls | -20 | |
| Oct 30, 2026Arrived | San Francisco | Denver | -6 | |
| Oct 29, 2026Arrived | Denver | Great Falls | 89 | |
| Oct 29, 2026Arrived | San Francisco | Denver | -7 | |
| Oct 28, 2026Arrived | Denver | Great Falls | -17 | |
| Oct 28, 2026Arrived | San Francisco | Denver | -15 | |
| Oct 27, 2026Arrived | Denver | Great Falls | -28 | |
| Oct 27, 2026Arrived | San Francisco | Denver | 17 | |
| Oct 26, 2026Arrived | Denver | Great Falls | -15 | |
| Oct 26, 2026Arrived | San Francisco | Denver | 50 | |
| Oct 25, 2026Arrived | Denver | Great Falls | -13 | |
| Oct 25, 2026Arrived | San Francisco | Denver | -13 |