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.

Upcoming flights 1 scheduled

From To Scheduled departure Estimated arrival Status
SFO SNA Apr 15, 06:06 PM UTC Apr 15, 07:13 PM UTC PLANNED

Route airports View route page →

Departure

SFO KSFO MVFR

San Francisco International Airport

San Francisco, US

Local time
00:07 PDT
Timezone
America/Los_Angeles
Type
Large Airport
Elevation
13 ft
Coordinates
37.6198, -122.3748

cloud Weather

Wind
270° / 11 kt
Visibility
10 SM
Ceiling
BKN 2,200 ft
Temp / Dew
12°C / 7°C
Altimeter
30.13 inHg

Obs: 2026-04-15T06:56:00.000Z

Raw METAR / TAF 
METAR KSFO 150656Z 27011KT 10SM BKN022 12/07 A3013 RMK AO2 SLP203 T01220072 $

TAF KSFO 150520Z 1506/1612 28012KT P6SM FEW030 FM151400 28014KT P6SM BKN050 FM151900 27018KT P6SM BKN150 FM160400 27015KT P6SM BKN030

flight Live Traffic

flight_takeoff 168 Departures
flight_land 153 Arrivals

Arrival

SNA KSNA VFR

John Wayne Orange County International Airport

Santa Ana, US

Local time
00:07 PDT
Timezone
America/Los_Angeles
Type
Large Airport
Elevation
56 ft
Coordinates
33.6751, -117.8693

cloud Weather

Wind
180° / 3 kt
Visibility
10 SM
Ceiling
CLR
Temp / Dew
16°C / 12°C
Altimeter
30.04 inHg

Obs: 2026-04-15T06:53:00.000Z

Raw METAR / TAF 
METAR KSNA 150653Z AUTO 18003KT 10SM CLR 16/12 A3004 RMK AO2 SLP172 T01610117 $

TAF KSNA 150520Z 1506/1606 VRB04KT P6SM FEW020 TEMPO 1513/1517 BKN020 FM151900 21010KT P6SM SCT250 FM160300 VRB04KT P6SM BKN250

warning FAA Advisories

  • Closed: !SNA 04/027 SNA AD AP CLSD DLY 0630-1315 2604140630-2604151315 (Apr 14 at 06:30 UTC. – Apr 15 at 13:15 UTC.)

flight Live Traffic

flight_takeoff 23 Departures
flight_land 26 Arrivals

Recent history last 6

DateAircraftRouteTakeoffLandingDurationDep ΔArr Δ
2026-04-13 A1272F - Apr 13, 22:30 UTCApr 13, 23:45 UTC1h 15m - -
2026-04-13 A2B157 - Apr 13, 18:12 UTCApr 13, 19:25 UTC1h 13m +38m +5m
2026-04-13 A12753 LAS → SFO Apr 13, 13:21 UTCApr 13, 14:43 UTC1h 22m +21m +5m
2026-04-13 A44213 - Apr 13, 00:20 UTCApr 13, 01:35 UTC1h 15m - -
2026-04-12 A44213 - Apr 12, 23:55 UTCApr 13, 01:35 UTC1h 40m - -
2026-04-12 A1270F - Apr 12, 18:15 UTCApr 12, 19:20 UTC1h 5m - -

Performance history

Flights tracked
6
Avg arrival delay
+5m
On-time arrival
100% 100% on time
Aircraft used
5

Monthly activity 1 month

Month Flights tracked
April 2026 6

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 18m from takeoff to landing.
How often does UAL643 fly?
UAL643 has been observed flying occasionally in our tracking data. We've recorded 6 flights under this callsign.
Is flight UAL643 usually on time?
Across recent flights, UAL643 arrives with an average 5-minute delay. 100% of flights arrive within 15 minutes of schedule.
What aircraft operates flight UAL643?
UAL643 has been operated by 5 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.