Is UA2123 delayed?
No — UA2123 landed in San Francisco 25 min early, at 22:26 on Sep 29 (as of Sep 30, 06:00 UTC).
Usually on time: arrived within 15 min of schedule on 41 of the last 49 flights.
25 min early
Official source · Updated
Departure
Denver
DEN
Scheduled
Not available
Arrival
San Francisco
SFO
Actual
Scheduled 22:51
Sep 29
Times shown in airport local time
Service date: · Scheduled arrival date; departure time unavailable (America/Los_Angeles)
Market settled: On time.
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.
Also sold as AC3451, NZ9072, AV2353, VA8356
Recent arrivals
Dates below are arrival dates in the destination airport’s time zone. The detailed history uses service dates.
- 25 min early
Denver → San Francisco
- On schedule (11 min behind)
Denver → San Francisco
- 40 min late
Denver → San Francisco
- 24 min early
Denver → San Francisco
- 41 min late
Denver → San Francisco
Is UA2123 usually late?
Observation window: Aug 31, 2026 – Sep 30, 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
Denver (DEN) departures
- Left more than 15 min late
- 7 of 155
- Cancelled today
- 0
San Francisco (SFO) departures
- Left more than 15 min late
- 40 of 122
- Cancelled today
- 0
Related flights
Flight history and details
| Service date | Departure | Arrival | Actual | Arrival delay (minutes) |
|---|---|---|---|---|
| Sep 29, 2026Arrived | Denver | San Francisco | -25 | |
| Sep 28, 2026Arrived | Denver | San Francisco | 11 | |
| Sep 27, 2026Arrived | Denver | San Francisco | 40 | |
| Sep 26, 2026Arrived | Denver | San Francisco | -24 | |
| Sep 25, 2026Arrived | Denver | San Francisco | 41 | |
| Sep 24, 2026Arrived | Denver | San Francisco | -18 | |
| Sep 23, 2026Arrived | Denver | San Francisco | -16 | |
| Sep 23, 2026Arrived | Kansas City | Denver | 0 | |
| Sep 22, 2026Arrived | Denver | San Francisco | 6 | |
| Sep 22, 2026Arrived | Kansas City | Denver | -14 | |
| Sep 21, 2026Arrived | Denver | San Francisco | -12 | |
| Sep 21, 2026Arrived | Kansas City | Denver | 6 | |
| Sep 20, 2026Arrived | Denver | San Francisco | 45 | |
| Sep 20, 2026Arrived | Kansas City | Denver | -11 | |
| Sep 19, 2026Arrived | Denver | San Francisco | 2 | |
| Sep 19, 2026Arrived | Kansas City | Denver | 11 | |
| Sep 18, 2026Arrived | Denver | San Francisco | 12 | |
| Sep 18, 2026Arrived | Kansas City | Denver | 119 | |
| Sep 17, 2026Arrived | Denver | San Francisco | 22 | |
| Sep 17, 2026Arrived | Kansas City | Denver | 3 | |
| Sep 16, 2026Arrived | Denver | San Francisco | 56 | |
| Sep 16, 2026Arrived | Kansas City | Denver | -1 | |
| Sep 15, 2026Arrived | Denver | San Francisco | -2 | |
| Sep 15, 2026Arrived | Kansas City | Denver | -23 | |
| Sep 14, 2026Arrived | Denver | San Francisco | -1 | |
| Sep 13, 2026Arrived | Denver | San Francisco | 1 | |
| Sep 13, 2026Arrived | Kansas City | Denver | -19 | |
| Sep 12, 2026Arrived | Denver | San Francisco | -22 | |
| Sep 12, 2026Arrived | Kansas City | Denver | 1 | |
| Sep 11, 2026Arrived | Denver | San Francisco | -14 | |
| Sep 11, 2026Arrived | Kansas City | Denver | -1 | |
| Sep 10, 2026Arrived | Denver | San Francisco | -10 | |
| Sep 10, 2026Arrived | Kansas City | Denver | -15 | |
| Sep 9, 2026Arrived | Denver | San Francisco | -17 | |
| Sep 9, 2026Arrived | Kansas City | Denver | -24 | |
| Sep 8, 2026Arrived | Denver | San Francisco | 7 | |
| Sep 8, 2026Arrived | Kansas City | Denver | 4 | |
| Sep 7, 2026Arrived | Denver | San Francisco | -9 | |
| Sep 7, 2026Arrived | Kansas City | Denver | 24 | |
| Sep 6, 2026Arrived | Denver | San Francisco | 3 | |
| Sep 6, 2026Arrived | Kansas City | Denver | -17 | |
| Sep 5, 2026Arrived | Denver | San Francisco | -18 | |
| Sep 5, 2026Arrived | Kansas City | Denver | 0 | |
| Sep 4, 2026Arrived | Denver | San Francisco | -11 | |
| Sep 4, 2026Arrived | Kansas City | Denver | 7 | |
| Sep 3, 2026Arrived | Denver | San Francisco | 44 | |
| Sep 2, 2026Arrived | Denver | San Francisco | -7 | |
| Sep 1, 2026Arrived | Denver | San Francisco | -20 | |
| Aug 31, 2026Arrived | Denver | San Francisco | 9 |
Email me if UA2123 runs late
We email you if your next UA2123 flight in the coming day is more than 15 minutes late, cancelled or diverted. Alerts last 30 days. No account needed.