| Date | From | To | Departure | Arrival | Status | |
|---|---|---|---|---|---|---|
| Jul 17 | DEN | SFO | 21:54 | 23:05 |
Landed
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| Jul 16 | DEN | SFO | 22:29 | 23:34 |
Landed Late
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| Jul 15 | DEN | SFO | 21:54 | 22:58 |
Landed
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| Jul 14 | DEN | SFO | 21:42 | 22:45 |
Landed
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| Jul 13 | DEN | SFO | 22:15 | 23:22 |
Landed Late
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| Jul 12 | DEN | SFO | 22:20 | 23:23 |
Landed Late
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| Jul 11 | DEN | SFO | 22:40 | 23:45 |
Delayed
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| Jul 10 | DEN | SFO | 22:02 | 23:18 |
Landed Late
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| Jul 09 | DEN | SFO | 22:51 | 00:02 |
Delayed
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| Jul 08 | DEN | SFO | 23:16 | 00:30 |
Delayed
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United Airlines Flight UA2123 connects Denver, United States to San Francisco, United States, taking off from Denver International Airport DEN and landing at San Francisco International Airport SFO.
How long is the UA2123 flight from Denver to San Francisco?
The average flight time from Denver to San Francisco is 2 hours and 7 minutes. The flight distance is 1553 km / 965 miles and the average flight speed is 729 km/h / 453 mph.
How many UA2123 flights are operated per week?
7 flights per week. The flight UA2123 is operated on Monday, Tuesday, Wednesday, Thursday, Friday, Saturday and Sunday.
What is the On-Time Performance (OTP) of United Airlines Flight UA2123 Denver to San Francisco?
The Airportia On-Time Performance Rating for United Airlines Flight UA2123 is 4.4/5 stars. This metric is calculated using data from the past 10 flights.
Which terminal is the flight UA2123 arriving at?
Flight UA2123 arrives at San Francisco International Airport (SFO) Terminal 3.
When was the latest UA2123 flight?
The latest flight took off on Saturday, July 18th, 2026 with the flight status being Landed on 23:05.
How else can the flight UA2123 be referenced as?
This United Airlines flight can also be referenced as UAL2123, UA 2123, UAL 2123.
How often is flight UA2123 delayed?
On average, 90% of all UA2123 flights are delayed. The average delay is 37 minutes.
Can I get compensation for my delayed or cancelled UA2123 flight or baggage issues?
If your UA2123 flight was cancelled, delayed, or if you experienced baggage issues such as delayed, damaged, or lost bags, you may be entitled to compensation. Compensation amounts and eligibility depend on various regulations, including EC 261/2004, UK261, CA Montreal Convention, US GoodWill, BR-ANAC, SA-GACA and TK-SHY.
See our UA2123 Flight Tracker above for more details.
Flight UA2123 is code-shared by 3 airlines using the flight numbers AC3451, NZ9072, VA8356
Other flights departing from Denver DEN: UA4650, UA1253, WN3110, WN3856
Other flights arriving at San Francisco SFO: UA2075, UA1495, AS590, UA2615
All flights connecting Denver DEN to San Francisco SFO.