Apparatus

Try JFK, AAL1290, BAW, or N225AN.

flight_takeoff Flight

UAL523

Operated by United Airlines

Live map

Live map filtered to UAL523. Shown when the flight is currently airborne.

Route airports View route page →

Departure

JFK KJFK VFR

John F. Kennedy International Airport

New York, US

Local time
17:00 EDT
Timezone
America/New_York
Type
Large Airport
Elevation
13 ft
Coordinates
40.6394, -73.7793

cloud Weather

Wind
210° / 11 kt
Visibility
10 SM
Ceiling
SCT 5,000 ft, SCT 8,000 ft, SCT 10,000 ft, BKN 25,000 ft
Temp / Dew
26°C / 21°C
Altimeter
30.00 inHg

Obs: 2026-08-28T20:51:00.000Z

Raw METAR / TAF 
METAR KJFK 282051Z 21011KT 10SM SCT050 SCT080 SCT100 BKN250 26/21 A3000 RMK AO2 SLP157 T02610211 55004 $

TAF KJFK 281958Z 2820/2924 19010KT P6SM VCSH SCT040 BKN070 FM290000 VRB05KT P6SM SCT040 SCT070 FM290100 33010KT P6SM SCT040 SCT070 FM290900 01008KT P6SM FEW040 FM291900 20004KT P6SM FEW250

flight Live Traffic

flight_takeoff 209 Departures
flight_land 229 Arrivals

Arrival

SFO KSFO VFR

San Francisco International Airport

San Francisco, US

Local time
14:00 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
FEW 600 ft, SCT 1,000 ft, BKN 11,000 ft, OVC 20,000 ft
Temp / Dew
16°C / 13°C
Altimeter
30.04 inHg

Obs: 2026-08-28T19:56:00.000Z

Raw METAR / TAF 
METAR KSFO 281956Z 27010KT 10SM FEW006 SCT010 BKN110 OVC200 16/13 A3004 RMK AO2 SLP173 T01610133

TAF KSFO 282047Z 2821/2924 28016KT P6SM VCSH SCT010 BKN100 FM290600 28012KT P6SM FEW012 FM291000 29008KT P6SM SCT012 FM291800 29015KT P6SM FEW015

Recent history last 30

DateAircraftRouteTakeoffLandingDurationDep ΔArr Δ
2026-07-26 A441AB JFK → SFO Jul 26, 10:55 UTCJul 26, 16:50 UTC5h 55m - -
2026-07-26 A441AB JFK → SFO Jul 26, 09:46 UTCJul 26, 16:45 UTC6h 59m +66m +9m
2026-07-26 A441AB JFK → SFO Jul 26, 09:40 UTCJul 26, 09:50 UTC10m - -
2026-07-24 A2B45B JFK → SFO Jul 24, 10:10 UTCJul 24, 15:55 UTC5h 45m - -
2026-07-24 A2B45B JFK → SFO Jul 24, 08:55 UTCJul 24, 09:05 UTC10m - -
2026-07-22 A2B17A EWR → EWR Jul 22, 00:30 UTCJul 22, 15:35 UTC15h 5m - -
2026-07-19 A126EA FNC → EWR Jul 19, 12:11 UTCJul 19, 18:57 UTC6h 46m +211m -6m
2026-07-19 A126EA - Jul 19, 12:05 UTCJul 19, 12:25 UTC20m - -
2026-07-17 A12709 FNC → EWR Jul 17, 08:54 UTCJul 17, 15:55 UTC7h 0m - -
2026-07-15 A126E6 FNC → EWR Jul 15, 09:05 UTCJul 15, 16:05 UTC7h 0m - -
2026-07-12 A2B136 - Jul 12, 09:00 UTCJul 12, 09:20 UTC20m - -
2026-07-12 A2B136 FNC → EWR Jul 12, 08:56 UTCJul 12, 16:01 UTC7h 5m +16m -5m
2026-07-12 A2B136 FNC → EWR Jul 12, 08:56 UTCJul 12, 16:00 UTC7h 4m +16m -6m
2026-07-10 A44187 FNC → EWR Jul 10, 10:16 UTCJul 10, 17:21 UTC7h 5m +96m +5m
2026-07-10 A44187 FNC → EWR Jul 10, 10:15 UTCJul 10, 17:30 UTC7h 15m - -
2026-07-08 A2B196 - Jul 8, 10:15 UTCJul 8, 16:10 UTC5h 55m - -
2026-07-08 A2B196 - Jul 8, 09:00 UTCJul 8, 09:05 UTC5m - -
2026-07-05 A7598C FNC → EWR Jul 5, 08:55 UTCJul 5, 15:45 UTC6h 50m - -
2026-07-03 A12429 - Jul 3, 14:35 UTCJul 3, 15:45 UTC1h 10m - -
2026-07-03 A12429 - Jul 3, 08:55 UTCJul 3, 09:05 UTC10m - -
2026-07-01 A43EA7 FNC → EWR Jul 1, 09:00 UTCJul 1, 15:35 UTC6h 35m - -
2026-06-28 A2B196 - Jun 28, 13:49 UTCJun 28, 16:05 UTC2h 15m - -
2026-06-28 A2B196 - Jun 28, 08:50 UTCJun 28, 09:10 UTC20m - -
2026-06-26 A44187 - Jun 26, 14:15 UTCJun 26, 16:39 UTC2h 25m - -
2026-06-26 A44187 FNC → EWR Jun 26, 08:56 UTCJun 26, 16:38 UTC7h 42m +16m on time
2026-06-26 A44187 - Jun 26, 09:00 UTCJun 26, 09:10 UTC10m - -
2026-06-24 A126C3 FNC → EWR Jun 24, 09:06 UTCJun 24, 16:01 UTC6h 55m +26m -7m
2026-06-24 A126C3 FNC → EWR Jun 24, 09:06 UTCJun 24, 16:01 UTC6h 55m +26m -7m
2026-06-24 A126C3 - Jun 24, 09:05 UTCJun 24, 09:24 UTC20m - -
2026-06-21 A75966 FNC → EWR Jun 21, 08:56 UTCJun 21, 15:52 UTC6h 56m +16m -7m

Performance history

Flights tracked
60 showing last 30
Avg arrival delay
-3m
On-time arrival
100% 100% on time
Aircraft used
14

Monthly activity 3 months

Month Flights tracked
July 2026 21
June 2026 24
May 2026 15

UAL523 frequently asked

Where does flight UAL523 fly?
UAL523 (United Airlines) flies from JFK to SFO. View the full route page.
How long is flight UAL523?
Based on observed flights, UAL523 takes on average 4h 37m from takeoff to landing.
How often does UAL523 fly?
UAL523 has been observed flying several times a week in our tracking data. We've recorded 60 flights under this callsign.
Is flight UAL523 usually on time?
Across recent flights, UAL523 arrives 3 minutes early on average. 100% of flights arrive within 15 minutes of schedule.
What aircraft operates flight UAL523?
UAL523 has been operated by 14 different aircraft in our records. Tail numbers are listed in the recent history below.
Can I track UAL523 live?
Yes. When UAL523 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.