United Airlines UA643 Flight Status : Live Tracking & Updates

Domestic flight United Airlines UA643 takes off from Las Vegas (LAS) United States to San Francisco (SFO) United States. It's operated by United Airlines. The plane leaves McCarran International Airport at 15:05 25 May 2026 America/Los_Angeles. The flight is expected to land at San Francisco International Airport at 20:27 25 May 2026 America/Los_Angeles. The flight will last about 3 hours 22 minutes.

Current status of UA643 is Departed On time Estimated Arrival in 4 hours

UA643 - UAL643 United Airlines (UA)
LAS Las Vegas United States
Flight LAS to SFO
SFO San Francisco United States
Departed On time Estimated Arrival in 4 hours
Departure McCarran International Airport
IATA: LASICAO: KLAS
Scheduled 15:05 25 May 2026
Actual 15:01 25 May 2026
B 10
Arrival San Francisco International Airport
IATA: SFOICAO: KSFO
Scheduled 20:27 25 May 2026
Estimated 20:04 25 May 2026
C 6
UA643 Detail
  • Type: Domestic Flight
  • Flight Duration: 3 hours 22 minutes
  • Flight Distance: 668 kms / 415 miles
Airline
  • United Airlines
  • IATA: UA
  • ICAO: UAL
  • Operating Days: Monday, Tuesday, Wednesday, Thursday, Friday, Saturday, Sunday
Passenger Services
  • Service type: Normal passenger
  • Seats: 167
  • Freight capacity: 17.1 tons
  • Passenger classes: First Class, Economy, Business Class, Shuttle
More Detail
  • Aircraft: Boeing 737MAX 8 Passenger
  • Callsign: F-NZAA2
  • Departure Timezone: America/Los_Angeles
  • Arrival Timezone: America/Los_Angeles
  • Current Time in Las Vegas: Monday 2026-05-25 16:04 PM
  • Current Time in San Francisco: Monday 2026-05-25 16:04 PM

United Airlines UA643 Flight Statistics

United Airlines
United Airlines
FLIGHT NO UA643
AIRPLANE Boeing 737MAX 8 Passenger
ON TIME 11
DELAYED 3
CANCELLED 0
ON TIME 26
DELAYED 3
CANCELLED 0
ON TIME 47
DELAYED 5
CANCELLED 0
ON TIME 64
DELAYED 6
CANCELLED 1
Last 14 days flight data
14 30 60 90
On Time Rate

United Airlines UA643 Flight Schedule and Histories

Time Departure Arrival Actual departure Actual arrival
Fri 22 May
Scheduled On time
Las Vegas (LAS) 2026-05-22T06:00
San Francisco (SFO) 2026-05-22T07:35
Wed 20 May
Arrived On time
Las Vegas (LAS) 2026-05-20T15:35
San Francisco (SFO) 2026-05-20T20:49
2026-05-20T15:38
2026-05-20T20:46
Mon 18 May
In Gate
Las Vegas (LAS) 2026-05-18 05:45
San Francisco (SFO) 2026-05-18 07:32
2026-05-18 06:01
2026-05-18 07:20
Thu 14 May
Arrived On time
Las Vegas (LAS) 2026-05-14T15:35
San Francisco (SFO) 2026-05-14T20:49
2026-05-14T15:34
2026-05-14T20:34
Wed 13 May
Departed On time
Las Vegas (LAS) 2026-05-13T15:35
San Francisco (SFO) 2026-05-13T20:49
2026-05-13T15:23
Mon 11 May
Scheduled On time
Las Vegas (LAS) 2026-05-11T10:38
San Francisco (SFO) 2026-05-11T12:20
Sun 10 May
Scheduled On time
Las Vegas (LAS) 2026-05-10T05:45
San Francisco (SFO) 2026-05-10T07:32
Sat 09 May
Scheduled On time
Las Vegas (LAS) 2026-05-09T05:45
San Francisco (SFO) 2026-05-09T07:32
Fri 08 May
Arrived On time
Las Vegas (LAS) 2026-05-08T15:35
San Francisco (SFO) 2026-05-08T20:49
2026-05-08T15:23
2026-05-08T20:34
Thu 07 May
Arrived On time
Las Vegas (LAS) 2026-05-07T15:35
San Francisco (SFO) 2026-05-07T20:49
2026-05-07T15:26
2026-05-07T20:39

Flight routes similar to United Airlines UA643

Airline Flight no Departure Arrival
Condor DE5299
Condor 		25/05/2026
07:00 		2 hours 1 minutes
08:42
Air New Zealand NZ9236
Air New Zealand 		25/05/2026
07:15 		1 hours 44 minutes
08:52
ANA NH7309
ANA 		25/05/2026
07:15 		1 hours 44 minutes
08:52
British Airways BA2954
British Airways 		25/05/2026
07:00 		1 hours 4 minutes
08:42
Southwest Airlines WN2768
Southwest Airlines 		25/05/2026
07:55 		1 hours 36 minutes
09:30
Air Canada AC5211
Air Canada 		25/05/2026
06:00 		1 hours 40 minutes
07:35
Asiana Airlines OZ6341
Asiana Airlines 		25/05/2026
07:15 		1 hours 3 minutes
08:52
Air New Zealand NZ9237
Air New Zealand 		25/05/2026
06:00 		1 hours 40 minutes
07:35

United Airlines Flight UA643 FAQs

What is the scheduled flight duration for United Airlines UA643 flight?

On average, nonstop flight takes 3 hour(s) 22 minutes, with the flight distance of 668 km (415 miles).

What is the current status of United Airlines UA643 flight?

The current status of flight United Airlines UA643 is Departed On time.

What type of aircraft is used for the United Airlines UA643 flight?

All United Airlines UA643 flights are operated using Boeing 737MAX 8 Passenger aircraft.

When does the flight United Airlines UA643 arrive?

Flight United Airlines UA643 arrives at 20:27.

Which terminal the flight United Airlines UA643 is arriving at?

Flight United Airlines UA643 arrives in San Francisco International Airport at Terminal C.

How many United Airlines UA643 flights are operated a week?

7 flights per week. The Flight United Airlines UA643 is operated on Monday, Tuesday, Wednesday, Thursday, Friday, Saturday, Sunday .