United Airlines
UA643 Flight status
According to Trip.com real-time data, the UA643 flight operated by United Airlines on Oct 8, 2026 is scheduled to fly from Las Vegas (LAS) to Houston (IAH). The flight is expected to depart at 05:45 (local time in Las Vegas, UTC-7) and land at 20:33 (local time in Houston, UTC-5)
Wed, Oct 7
Thu, Oct 8
Fri, Oct 9
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Arrived
The flight has arrived 41m early
12h 48m
SFO
3h 10m
SNA
3h 26m
Check-in Counter
--
Boarding Gate
D54
Arrival Gate
15
Baggage
C6
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Scheduled
Your flight will depart on time.
12h 48m
SFO
3h 25m
SNA
3h 52m
Check-in Counter
--
Boarding Gate
D57
Arrival Gate
33
Baggage
C6
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Scheduled
Your flight will depart on time.
12h 48m
SFO
2h 51m
SNA
3h 11m
Check-in Counter
--
Boarding Gate
D51
Arrival Gate
--
Baggage
C6
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Information provided by VariFlight.
Please refer to airport announcements for the most up-to-date information.
You can also explore more flights from Las Vegas to Houston or track other flights with our flight status tracker.
Track the Previous Flight Status: Landed at Las Vegas
UA1875
|
Chicago (CHI)
Las Vegas (LAS)
Las Vegas (LAS)
Scheduled: 17:49
|
17m early
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UA643 Aircraft Details
According to Trip.com real-time data, the UA643 flight flying from Las Vegas to Houston on 10/8/2026 is operated by the aircraft model Boeing 737. This aircraft has been in service for 24y. The aircraft is equipped with 114 seats.
Boeing 737
Punctuality (Departure)
93
%
Punctuality (Arrival)
93
%
Early on average
9 minutes
Age
24y
Seats
114
Flight Distance
--
Economy
Premium Economy
In-Flight Services
None
Live TV
Wi-Fi is available
No power outlets are available
Seat Information
76 cm
More legroom than on 15% of flights
--
Seat width
100°
Reclining Angle
3-3
Seat layout example
In-Flight Services
Snacks
Live TV
Wi-Fi is available
Power outlet
Seat Information
--
Legroom
43 cm
Seat width better than on 48% of flights
100°
Reclining Angle
3-3
Seat layout example
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Flight History for UA643
Trip.com historical records show that the last UA643 flight departed on Wed, Oct 7 from LAS at approximately 05:59. This flight is expected to arrrive in IAH at 19:52.
| Date | Airport | Aircraft Model | Departure | Arrival | Status | |
|---|---|---|---|---|---|---|
| Departure | Arrival | |||||
| Sat, Oct 3 | San Francisco (SFO) | Houston (IAH) | B38M | 10:37 | 20:09 | Arrived |
| Sun, Oct 4 | Las Vegas (LAS) | Houston (IAH) | 739 | 05:51 | 20:33 | Arrived |
| Mon, Oct 5 | Las Vegas (LAS) | Houston (IAH) | B39M | 05:56 | 20:03 | Arrived |
| Wed, Oct 7 | Las Vegas (LAS) | Houston (IAH) | B38M | 05:59 | 19:52 | Arrived |
| Thu, Oct 8 | Las Vegas (LAS) | Houston (IAH) | 737 | 05:45 | 20:33 | Scheduled |
| Fri, Oct 9 | Las Vegas (LAS) | Houston (IAH) | B39M | 05:45 | 20:33 | Scheduled |
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UA643 On-Time Performance
Based on the average performance of this flight over the past 30 trips, the on-time departure rate of UA643 is 93% (Late on average 8 minutes), and the on-time arrival rate is 93% (Early on average 9 minutes).
On-Time Departures
Punctuality
93
%
Late on average
8 minutes
Early
0
%
On time
93
%
30 mins late
7
%
60 mins late
0
%
90 mins late
0
%
Cancelled
0
%
On-Time Arrivals
Punctuality
93
%
Early on average
9 minutes
Early
73
%
On time
20
%
30 mins late
0
%
60 mins late
0
%
90 mins late
7
%
Cancelled
0
%
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Flight FAQs
-
What is the current status of flight ua643?
Flight ua643 has not departed yet and is currently on schedule. Scheduled departure 05:45, arrival 20:33 (updated Oct 8, 2026). -
Is flight ua643 on time today?
Flight ua643 has not departed yet and is currently on schedule. Scheduled departure is 05:45, with arrival at 20:33. Recheck gate and timing before you head to the airport. -
Has flight ua643 departed yet? What is the departure time?
Flight ua643 is scheduled to depart at 05:45. The latest actual or estimated departure time is 05:45, and the current status is Scheduled (updated Oct 8, 2026). -
When is flight ua643 scheduled to arrive?
Flight ua643 is scheduled to arrive at 20:33. The latest estimated or actual arrival time is 20:33. Status is Scheduled as of Oct 8, 2026. -
What is the gate information for flight ua643?
For flight ua643, the departure terminal is T3 and the boarding gate is D57. 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 48 minutes; operating days may include Thursday. -
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 (Scheduled, updated Oct 8, 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 not departed from Las Vegas (LAS) yet and is currently on schedule for 05:45. -
What is the seat configuration for flight ua643?
Flight ua643 usually flies a Boeing 737 with seat layout 3-3. Layouts can differ by aircraft subtype and cabin product—confirm your seat map in Manage Booking after you purchase.
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Arrival Info: Houston Weather & Current Time
Clear
|
23°C - 32°C
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2 hour time difference
Time on arrival: Las Vegas 18:33
|
Houston 20:33
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