United Airlines UA2123 Flight Status
Based on Trip.com’s real-time data, the UA2123 flight operated by United Airlines on May 24, 2026 is scheduled to fly from Denver (DEN) to San Francisco (SFO). The flight is expected to depart at 21:10 (local time in Denver, UTC-6) and land at 22:56 (local time in San Francisco, UTC-7) .
Sat, May 23
Sun, May 24
Mon, May 25
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Scheduled
Your flight will depart on time.
2h 46m
Check-in Counter
7,8
Boarding Gate
--
Arrival Gate
--
Baggage
--
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Scheduled
Your flight will depart on time.
2h 46m
Check-in Counter
7,8
Boarding Gate
--
Arrival Gate
--
Baggage
--
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Scheduled
Your flight will depart on time.
2h 46m
Check-in Counter
7,8
Boarding Gate
--
Arrival Gate
--
Baggage
--
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Information provided by VariFlightVariFlight. For the latest updates, please refer to airport announcements or consult your airline. If this is not your flight, you can browse more options for flights from Denver to San Francisco to find your schedule.
Track the Previous Flight Status: Scheduled
UA2834
|
New York (NYC) 
Denver (DEN)
Denver (DEN)Scheduled: 19:35
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UA2123 Aircraft Details
Airbus A321neo
Punctuality (Departure)
40%
Punctuality (Arrival)
83%
Late on average
29 minutes
Age
--
Seats
--
Distance
--
Economy
Premium Economy
Business
First
Onboard Amenities
None
Seatback entertainment system
Wi-Fi (additional charge)
USB port and power outlet
Seating Plan
--
Legroom
--
Seat width
--
Reclining Angle
3-3
Seat layout example
Onboard Amenities
None
Seatback entertainment system
Wi-Fi (additional charge)
USB port and power outlet
Seating Plan
--
Legroom
--
Seat width
--
Reclining Angle
3-3
Seat layout example
Onboard Amenities
Meal included
Seatback entertainment system
Wi-Fi (additional charge)
USB port and power outlet
Seating Plan
--
Legroom
--
Seat width
--
Reclining Angle
2-2
Seat layout example
Onboard Amenities
Meal included
Seatback entertainment system
Wi-Fi (additional charge)
USB port and power outlet
Seating Plan
--
Legroom
--
Seat width
--
Reclining Angle
2-2
Seat layout example
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Flight History for UA2123
Trip.com historical records show that the last UA2123 flight departed on Sat, May 23 from DEN at approximately 21:10. This flight is expected to arrrive in SFO at 22:56.
| Date | Airport | Aircraft Type | Departure | Arrival | Status | |
|---|---|---|---|---|---|---|
| Departure | Arrival | |||||
| Tue, May 19 | Kansas City (MCI) | San Francisco (SFO) | 738 | 17:17 | 22:42 | Scheduled |
| Wed, May 20 | Kansas City (MCI) | San Francisco (SFO) | B39M | 17:17 | 22:42 | Scheduled |
| Thu, May 21 | Denver (DEN) | San Francisco (SFO) | A21N | 21:10 | 22:56 | Scheduled |
| Fri, May 22 | Denver (DEN) | San Francisco (SFO) | A21N | 21:10 | 22:56 | Scheduled |
| Sat, May 23 | Denver (DEN) | San Francisco (SFO) | A21N | 21:10 | 22:56 | Scheduled |
| Sun, May 24 | Denver (DEN) | San Francisco (SFO) | A21N | 21:10 | 22:56 | Scheduled |
| Mon, May 25 | Denver (DEN) | San Francisco (SFO) | A21N | 21:10 | 22:56 | Scheduled |
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UA2123 On-Time Performance
Based on the average performance of this flight over the past 30 trips, the on-time departure rate of UA2123 is 40% (Late on average 41 minutes), and the on-time arrival rate is 83% (Late on average 29 minutes).
On-Time Departures
Punctuality
40%
Late on average 41 minutes
Early
0%
On time
40%
30 mins late
47%
60 mins late
7%
90 mins late
7%
Cancelled
0%
On-Time Arrivals
Punctuality
83%
Late on average 29 minutes
Early
43%
On time
40%
30 mins late
10%
60 mins late
0%
90 mins late
7%
Cancelled
0%
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Cheap Return Flights to Denver
- Sat, May 30San Francisco (SFO)Denver (DEN)
Frontier AirlinesOne way51% offTWD 3,817TWD 1,853 - Wed, Jul 8San Francisco (SFO)Denver (DEN) Frontier AirlinesOne way40% offTWD 3,817TWD 2,280
- Tue, Jul 14San Francisco (SFO)Denver (DEN) Frontier AirlinesOne way40% offTWD 3,817TWD 2,280
- Mon, May 25San Francisco (SFO)Denver (DEN) Frontier AirlinesOne way35% offTWD 3,817TWD 2,480
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Destination Info: San Francisco Weather & Time
Mostly clear
|
13°C - 18°C
Expected weather conditions upon arrival
-1 hour time difference
Time on arrival: Denver 23:56| San Francisco 22:56
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