Apparatus

Try JFK, AAL1290, BAW, or N225AN.

flight_takeoff Flight

UAL2123

Operated by UAL

Live map

Live map filtered to UAL2123. Shown when the flight is currently airborne.

Route airports View route page →

Departure

DEN KDEN VFR

Denver International Airport

Denver, US

Local time
01:32 MDT
Timezone
America/Denver
Type
Large Airport
Elevation
5,431 ft
Coordinates
39.8600, -104.6738

cloud Weather

Wind
260° / 8 kt
Visibility
10 SM
Ceiling
FEW 10,000 ft, FEW 20,000 ft
Temp / Dew
14°C / 8°C
Altimeter
29.80 inHg

Obs: 2026-05-30T06:53:00.000Z

Raw METAR / TAF 
METAR KDEN 300653Z 26008KT 10SM FEW100 FEW200 14/08 A2980 RMK AO2 SLP015 T01390078 402830128

TAF KDEN 300538Z 3006/3112 VRB06KT P6SM FEW100 SCT200 FM300900 25006KT P6SM FEW100 SCT200 FM301400 28009KT P6SM SCT180 FM302100 33010KT P6SM VCSH SCT100 PROB30 3021/3101 VRB15G25KT -SHRA FM310300 27013KT P6SM FEW080 SCT100 FM310700 23011KT P6SM FEW100 SCT200

flight Live Traffic

flight_takeoff 163 Departures
flight_land 138 Arrivals

Arrival

SFO KSFO MVFR

San Francisco International Airport

San Francisco, US

Local time
00:32 PDT
Timezone
America/Los_Angeles
Type
Large Airport
Elevation
13 ft
Coordinates
37.6198, -122.3748

cloud Weather

Wind
270° / 10 kt
Visibility
10 SM
Ceiling
OVC 1,000 ft
Temp / Dew
13°C / 11°C
Altimeter
30.11 inHg

Obs: 2026-05-30T06:56:00.000Z

Raw METAR / TAF 
METAR KSFO 300656Z 27010KT 10SM OVC010 13/11 A3011 RMK AO2 SLP195 T01280106

TAF KSFO 300520Z 3006/3112 26009KT P6SM OVC008 FM301000 27006KT P6SM OVC012 FM301800 28012KT P6SM SKC FM302300 27022KT P6SM SKC FM310600 28012KT P6SM SKC

flight Live Traffic

flight_takeoff 235 Departures
flight_land 165 Arrivals

Recent history last 30

DateAircraftRouteTakeoffLandingDurationDep ΔArr Δ
2026-05-30 A0B7FE AUS → SFO May 30, 03:55 UTCMay 30, 05:30 UTC1h 35m - -
2026-05-29 A0B7BB AUS → SFO May 29, 04:45 UTCMay 29, 06:55 UTC2h 10m - -
2026-05-28 A0B841 AUS → SFO May 28, 04:05 UTCMay 28, 06:10 UTC2h 5m - -
2026-05-27 AD22E1 AUS → SFO May 27, 03:29 UTCMay 27, 05:38 UTC2h 9m +19m on time
2026-05-27 AD22E1 AUS → SFO May 27, 03:24 UTCMay 27, 05:40 UTC2h 15m - -
2026-05-26 A6EDE5 AUS → SFO May 26, 04:35 UTCMay 26, 06:44 UTC2h 10m - -
2026-05-26 A6EDE5 AUS → SFO May 26, 03:34 UTCMay 26, 06:41 UTC3h 7m +24m +59m
2026-05-25 A6ED61 AUS → SFO May 25, 03:45 UTCMay 25, 05:55 UTC2h 10m - -
2026-05-24 A245B7 AUS → SFO May 24, 03:25 UTCMay 24, 05:30 UTC2h 5m - -
2026-05-23 A0B7FA AUS → SFO May 23, 03:55 UTCMay 23, 06:05 UTC2h 10m - -
2026-05-22 A0B7DC AUS → SFO May 22, 03:29 UTCMay 22, 05:52 UTC2h 23m +19m +10m
2026-05-22 A0B7DC AUS → SFO May 22, 03:35 UTCMay 22, 06:00 UTC2h 25m - -
2026-05-21 A448FA AUS → SFO May 21, 03:30 UTCMay 21, 05:35 UTC2h 5m - -
2026-05-20 A0AD3E AUS → SFO May 20, 23:35 UTCMay 21, 01:10 UTC1h 35m - -
2026-05-20 A0AD3E AUS → SFO May 20, 23:31 UTCMay 21, 01:04 UTC1h 33m -199m -2m
2026-05-20 A05E02 AUS → SFO May 20, 03:10 UTCMay 20, 05:12 UTC2h 2m +20m +3m
2026-05-20 A05E02 AUS → SFO May 20, 03:00 UTCMay 20, 05:10 UTC2h 11m - -
2026-05-19 A3A0CC AUS → SFO May 19, 22:55 UTCMay 20, 00:20 UTC1h 25m - -
2026-05-19 AA7F01 AUS → SFO May 19, 03:25 UTCMay 19, 05:50 UTC2h 25m - -
2026-05-18 A2615E AUS → SFO May 18, 22:55 UTCMay 19, 00:25 UTC1h 30m - -
2026-05-18 A4497F AUS → SFO May 18, 03:20 UTCMay 18, 05:35 UTC2h 15m - -
2026-05-17 A3A0ED AUS → SFO May 17, 23:10 UTCMay 18, 00:40 UTC1h 30m - -
2026-05-17 A12B0E AUS → SFO May 17, 03:15 UTCMay 17, 05:30 UTC2h 15m - -
2026-05-16 A9D626 AUS → SFO May 16, 22:40 UTCMay 17, 00:15 UTC1h 35m - -
2026-05-16 AA4C1A AUS → SFO May 16, 05:00 UTCMay 16, 07:20 UTC2h 21m - -
2026-05-15 AA7E79 AUS → SFO May 15, 22:45 UTCMay 16, 00:00 UTC1h 15m - -
2026-05-15 A4495B AUS → SFO May 15, 03:20 UTCMay 15, 05:30 UTC2h 10m - -
2026-05-14 A14AD1 AUS → SFO May 14, 23:00 UTCMay 15, 00:25 UTC1h 25m - -
2026-05-14 A2BC5A AUS → SFO May 14, 05:35 UTCMay 14, 06:30 UTC55m - -
2026-05-14 A2BC5A AUS → SFO May 14, 04:20 UTCMay 14, 05:25 UTC1h 5m - -

Performance history

Flights tracked
116 showing last 30
Avg arrival delay
+14m
On-time arrival
80% 80% on time
Aircraft used
24

Monthly activity 2 months

Month Flights tracked
May 2026 64
April 2026 52

UAL2123 frequently asked

Where does flight UAL2123 fly?
UAL2123 (UAL) flies from DEN to SFO. View the full route page.
How long is flight UAL2123?
Based on observed flights, UAL2123 takes on average 1h 57m from takeoff to landing.
How often does UAL2123 fly?
UAL2123 has been observed flying several times a week in our tracking data. We've recorded 116 flights under this callsign.
Is flight UAL2123 usually on time?
Across recent flights, UAL2123 arrives with an average 14-minute delay. 80% of flights arrive within 15 minutes of schedule.
What aircraft operates flight UAL2123?
UAL2123 has been operated by 24 different aircraft in our records. Tail numbers are listed in the recent history below.
Can I track UAL2123 live?
Yes. When UAL2123 is currently airborne, the live tracker map above shows its real-time position from ADS-B broadcasts. If the map is empty, the flight is not currently in the air.