Apparatus

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flight_takeoff Flight

UAL643

Operated by UAL

Live map

Live map filtered to UAL643. Shown when the flight is currently airborne.

Route airports View route page →

Departure

SFO KSFO VFR

San Francisco International Airport

San Francisco, US

Local time
07:17 PDT
Timezone
America/Los_Angeles
Type
Large Airport
Elevation
13 ft
Coordinates
37.6198, -122.3748

cloud Weather

Wind
0° / 0 kt
Visibility
10 SM
Ceiling
FEW 1,100 ft, SCT 1,600 ft
Temp / Dew
13°C / 9°C
Altimeter
30.12 inHg

Obs: 2026-05-30T13:56:00.000Z

Raw METAR / TAF 
METAR KSFO 301356Z 00000KT 10SM FEW011 SCT016 13/09 A3012 RMK AO2 SLP198 T01280094 $

TAF KSFO 301122Z 3012/3118 27008KT P6SM OVC012 FM301800 28012KT P6SM SKC FM302300 27022KT P6SM SKC FM310600 28012KT P6SM SKC FM311200 27005KT P6SM FEW005

flight Live Traffic

flight_takeoff 304 Departures
flight_land 354 Arrivals

Arrival

SNA KSNA VFR

John Wayne Orange County International Airport

Santa Ana, US

Local time
07:17 PDT
Timezone
America/Los_Angeles
Type
Large Airport
Elevation
56 ft
Coordinates
33.6751, -117.8693

cloud Weather

Wind
0° / 0 kt
Visibility
10 SM
Ceiling
SCT 1,300 ft
Temp / Dew
16°C / 12°C
Altimeter
30.02 inHg

Obs: 2026-05-30T13:53:00.000Z

Raw METAR / TAF 
METAR KSNA 301353Z 00000KT 10SM SCT013 16/12 A3002 RMK AO2 SLP166 T01560122 $

TAF KSNA 301123Z 3012/3112 VRB04KT P6SM FEW020 FM301900 22010KT P6SM SKC FM310300 VRB04KT P6SM SCT015 FM310800 VRB03KT P6SM BKN013

flight Live Traffic

flight_takeoff 113 Departures
flight_land 119 Arrivals

Recent history last 30

DateAircraftRouteTakeoffLandingDurationDep ΔArr Δ
2026-05-29 A2B10B KOA → SFO May 29, 22:10 UTCMay 30, 00:45 UTC2h 35m - -
2026-05-29 A56661 KOA → SFO May 29, 17:55 UTCMay 29, 19:00 UTC1h 5m - -
2026-05-29 A44257 KOA → SFO May 29, 13:10 UTCMay 29, 14:20 UTC1h 10m - -
2026-05-28 A12709 KOA → SFO May 28, 22:20 UTCMay 29, 00:55 UTC2h 35m - -
2026-05-28 A126C4 KOA → SFO May 28, 18:45 UTCMay 28, 19:50 UTC1h 5m - -
2026-05-28 A441AC KOA → SFO May 28, 13:30 UTCMay 28, 14:35 UTC1h 5m - -
2026-05-27 ABE448 KOA → SFO May 27, 22:10 UTCMay 28, 00:55 UTC2h 45m - -
2026-05-27 A12735 KOA → SFO May 27, 18:10 UTCMay 27, 19:15 UTC1h 5m - -
2026-05-26 A1277B KOA → SFO May 26, 22:15 UTCMay 27, 00:44 UTC2h 30m - -
2026-05-26 A44212 KOA → SFO May 26, 17:44 UTCMay 26, 18:50 UTC1h 5m - -
2026-05-26 A94B72 KOA → SFO May 26, 13:19 UTCMay 26, 14:30 UTC1h 10m - -
2026-05-25 A5CF1B KOA → SFO May 25, 22:15 UTCMay 26, 00:54 UTC2h 40m - -
2026-05-25 A123BF KOA → SFO May 25, 17:49 UTCMay 25, 18:45 UTC56m +26m +5m
2026-05-25 A123BF KOA → SFO May 25, 17:40 UTCMay 25, 18:45 UTC1h 5m - -
2026-05-25 A8D4F6 KOA → SFO May 25, 13:20 UTCMay 25, 14:30 UTC1h 10m - -
2026-05-24 A2B136 KOA → SFO May 24, 23:00 UTCMay 24, 23:46 UTC46m - -
2026-05-24 A44169 KOA → SFO May 24, 17:45 UTCMay 24, 18:55 UTC1h 10m - -
2026-05-23 A5CC37 KOA → SFO May 23, 22:05 UTCMay 24, 01:05 UTC3h 0m - -
2026-05-23 A12731 KOA → SFO May 23, 17:35 UTCMay 23, 18:45 UTC1h 11m - -
2026-05-23 A2B154 KOA → SFO May 23, 13:21 UTCMay 23, 14:15 UTC54m +21m -12m
2026-05-23 A2B154 KOA → SFO May 23, 13:15 UTCMay 23, 14:20 UTC1h 5m - -
2026-05-22 A4418D KOA → SFO May 22, 22:10 UTCMay 23, 00:55 UTC2h 45m - -
2026-05-22 A60814 KOA → SFO May 22, 17:35 UTCMay 22, 18:45 UTC1h 10m - -
2026-05-22 A43EA2 KOA → SFO May 22, 13:15 UTCMay 22, 14:20 UTC1h 5m - -
2026-05-21 A5CF19 KOA → SFO May 21, 22:25 UTCMay 22, 01:20 UTC2h 55m - -
2026-05-21 A5CF19 KOA → SFO May 21, 22:18 UTCMay 22, 01:17 UTC2h 59m +13m -5m
2026-05-21 A43EEC KOA → SFO May 21, 17:50 UTCMay 21, 18:55 UTC1h 5m - -
2026-05-21 A2B198 KOA → SFO May 21, 13:21 UTCMay 21, 14:15 UTC54m +21m -13m
2026-05-21 A2B198 KOA → SFO May 21, 13:15 UTCMay 21, 14:15 UTC1h 0m - -
2026-05-20 A0ACF9 KOA → SFO May 20, 22:55 UTCMay 21, 01:40 UTC2h 45m - -

Performance history

Flights tracked
169 showing last 30
Avg arrival delay
-6m
On-time arrival
100% 100% on time
Aircraft used
26

Monthly activity 2 months

Month Flights tracked
May 2026 99
April 2026 70

UAL643 frequently asked

Where does flight UAL643 fly?
UAL643 (UAL) flies from SFO to SNA. View the full route page.
How long is flight UAL643?
Based on observed flights, UAL643 takes on average 1h 37m from takeoff to landing.
How often does UAL643 fly?
UAL643 has been observed flying several times a week in our tracking data. We've recorded 169 flights under this callsign.
Is flight UAL643 usually on time?
Across recent flights, UAL643 arrives 6 minutes early on average. 100% of flights arrive within 15 minutes of schedule.
What aircraft operates flight UAL643?
UAL643 has been operated by 26 different aircraft in our records. Tail numbers are listed in the recent history below.
Can I track UAL643 live?
Yes. When UAL643 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.