United Airlines UA643 Flight status
According to Trip.com real-time data, the UA643 flight operated by United Airlines on Nov 4, 2026, flying from Las Vegas (LAS) to Houston (IAH), departed at 06:12 (local time in Las Vegas, UTC-8) and is expected to arrive at 20:15 (local time in Houston, UTC-6) at George Bush Intercontinental Airport (IAH).
Tue, Nov 3
Wed, Nov 4
Thu, Nov 5
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Arrived
The flight has arrived 32m late
12h 15m
SFO
3h 10m
SNA
3h 55m
Check-in Counter
--
Boarding Gate
D54
Arrival Gate
3
Baggage
C6
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En route
Your flight has departed Las Vegas and is expected to arrive in Houston at 20:15.
12h 15m
SFO
3h 10m
SNA
3h 22m
Check-in Counter
--
Boarding Gate
D51
Arrival Gate
8
Baggage
C6
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Scheduled
Your flight will depart on time.
12h 15m
SFO
2h 48m
SNA
2h 52m
Check-in Counter
--
Boarding Gate
D57
Arrival Gate
--
Baggage
C6
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Search flights Information provided by VariFlight For real-time updates, please check airport displays or contact your airline. You can also explore more flights from Las Vegas to Houston or track other flights with our flight status tracker.
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UA643
Track the Previous Flight Status: Landed at Las Vegas
UA2400
|
Boston (BOS)
Las Vegas (LAS)
Las Vegas (LAS)
Scheduled: 00:40
|
32m early
fake text
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UA643 Aircraft Details
According to Trip.com real-time data, the UA643 flight from Las Vegas to Houston on 11/4/2026 is operated using the aircraft model Boeing 737-900. This aircraft has been in service for 2y, 4m. The aircraft has 179 seats.
Boeing 737-900
Punctuality (Departure)
90
%
Punctuality (Arrival)
93
%
Early on average
15 minutes
Age
2y, 4m
Seats
179
Flight Distance
--
Economy
First
Premium Economy
In-Flight Services
None
Entertainment available, please bring your own device
Wi-Fi is available
Power outlet
Seat Information
--
Legroom
--
Seat width
100°
Reclining Angle
--
Seat layout example
In-Flight Services
Snacks
Entertainment available, please bring your own device
Wi-Fi is available
Power outlet
Seat Information
94 cm
Legroom
51 cm
Seat width
120°
Reclining Angle
--
Seat layout example
In-Flight Services
None
Entertainment available, please bring your own device
Wi-Fi is available
Power outlet
Seat Information
--
Legroom
--
Seat width
105°
Reclining Angle
--
Seat layout example
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Flight History for UA643
Trip.com historical records show that the last UA643 flight departed on Tue, Nov 3 from LAS at approximately 06:13. This flight is expected to arrrive in IAH at 20:47.
| Date | Airport | Aircraft Model | Departure | Arrival | Status | |
|---|---|---|---|---|---|---|
| Departure | Arrival | |||||
| Sat, Oct 31 | Las Vegas (LAS) | Houston (IAH) | 738 | 06:34 | 19:29 | Arrived |
| Sun, Nov 1 | Las Vegas (LAS) | Houston (IAH) | B39M | 06:12 | 19:49 | Arrived |
| Mon, Nov 2 | Las Vegas (LAS) | Houston (IAH) | B39M | 06:10 | 19:46 | Arrived |
| Tue, Nov 3 | Las Vegas (LAS) | Houston (IAH) | B39M | 06:13 | 20:47 | Arrived |
| Wed, Nov 4 | Las Vegas (LAS) | Houston (IAH) | B39M | 06:12 | 20:15 | En route |
| Thu, Nov 5 | Las Vegas (LAS) | Houston (IAH) | B38M | 06:00 | 20:15 | Scheduled |
| Fri, Nov 6 | Las Vegas (LAS) | Santa Ana (SNA) | B39M | 06:00 | 12:07 | Scheduled |
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UA643 On-Time Performance
Based on the average performance of this flight over the last 30 trips, the on-time departure rate of UA643 is 90% (Late on average 12 minutes), and the on-time arrival rate is 93% (Early on average 15 minutes).
On-Time Departures
Punctuality
90
%
Late on average
12 minutes
Early
0
%
On time
90
%
30 mins late
10
%
60 mins late
0
%
90 mins late
0
%
Cancelled
0
%
On-Time Arrivals
Punctuality
93
%
Early on average
15 minutes
Early
83
%
On time
10
%
30 mins late
0
%
60 mins late
3
%
90 mins late
3
%
Cancelled
0
%
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Flight FAQs
What is the current status of flight ua643?
Flight ua643 has departed (status: En route). Departure 06:12, estimated arrival 20:15 (updated Nov 4, 2026).Is flight ua643 on time today?
Flight ua643 has already departed (status: En route). It took off at 06:12 and is estimated to arrive at 20:15.Has flight ua643 departed yet? What is the departure time?
Flight ua643 is scheduled to depart at 06:00. The latest actual or estimated departure time is 06:12, and the current status is En route (updated Nov 4, 2026).When is flight ua643 scheduled to arrive?
Flight ua643 is scheduled to arrive at 20:15. The latest estimated or actual arrival time is 20:15. Status is En route as of Nov 4, 2026.What is the gate information for flight ua643?
For flight ua643, the departure terminal is T3 and the boarding gate is D51. Gate assignments can change at short notice—confirm on airport screens before heading to security.What is the baggage carousel number for flight ua643?
After arrival, baggage for flight ua643 is expected at carousel C6 in terminal C. Carousel numbers are assigned close to landing and may change—follow airport signs on arrival.What route does flight ua643 fly?
Flight ua643 is operated by United Airlines from Las Vegas (LAS) to Houston (IAH). Typical flight time is about 12 hours 15 minutes; operating days may include Wednesday.How can I check real-time status for flight ua643?
Track flight ua643 on this Trip.com status page for live departure, arrival, gate and baggage updates. For push alerts on the go, open the same flight in the Trip.com App and turn on flight notifications.If flight ua643 is delayed or canceled, what should I do?
If ua643 is delayed or canceled, first confirm the latest status here (En route, updated Nov 4, 2026). Contact United Airlines or your booking channel for rebooking or refund options, and check Trip.com Manage Booking if you booked on Trip.com.Has flight ua643 departed from Las Vegas?
Flight ua643 has departed from Las Vegas (LAS) at 06:12 (status: En route).
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Arrival Info: Houston Weather & Current Time
Partly cloudy
|
16°C - 29°C
Weather forecast for your arrival day
2 hour time difference
Time on arrival: Las Vegas 18:15
|
Houston 20:15
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