UA2123 · UAL2123

UAL2123 over the last 30 days

As of 2026-10-27

UAL2123 is operated by United Airlines on the route Denver International Airport (DEN/KDEN) → San Francisco International Airport (SFO/KSFO). It usually takes off around 03:33 UTC (21:33 local time, DEN). It usually lands around 05:41 UTC (22:41 local time, SFO). Most frequent aircraft type: AIRBUS A-321neo (A21N).

Days with an observed flight (last 30 days)

29/30

Days of the week with an observed flight

Mon, Tue, Wed, Thu, Fri, Sat, Sun

Typical take-off

03:33 UTC · 21:33 local time (DEN)

Typical landing

05:41 UTC · 22:41 local time (SFO)

Typical time airborne

129 min

Median departure deviation from the usual time on this route

0 min

Departures within 15 minutes of the usual time

82 %

Departures measured

266

Our measurement against the usual departure time of the route, from our own observations over the last 28 days; the figures cover all flights of this airline on the route.

Aircraft types on this flight (last 30 days)

• AIRBUS A-321neo (A21N) — Number of flights: 26
• BOEING 737 MAX 8 (B38M) — Number of flights: 3
• BOEING 737-800 (B738) — Number of flights: 3

Aircraft in the last 7 days

• N17314 · BOEING 737 MAX 8 2026-10-27
• N79279 · BOEING 737-800 2026-10-27
• N37318 · BOEING 737 MAX 8 2026-10-26
• N77525 · BOEING 737-800 2026-10-26
• N17285 · BOEING 737 MAX 8 2026-10-25
• N12225 · BOEING 737-800 2026-10-25

Related flights on this route

• All flights KDEN – KSFO