United Airlines UA643 Flight status
According to Trip.com real-time data, the UA643 flight operated by United Airlines on Oct 23, 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 arrive at 20:33 (local time in Houston, UTC-5) .
Thu, Oct 22
Fri, Oct 23
Sat, Oct 24
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Arrived
The flight has arrived 32m early
12h 48m
SFO
3h 36m
SNA
3h 20m
Check-in Counter
--
Boarding Gate
D58
Arrival Gate
43
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
D51
Arrival Gate
--
Baggage
C6
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United Airlines From PLN 487
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Scheduled
Your flight will depart on time.
8h 16m
SNA
3h 11m
Check-in Counter
--
Boarding Gate
--
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.
UA643 Aircraft Details
According to Trip.com real-time data, the UA643 flight from Las Vegas to Houston on 10/23/2026 is operated using the aircraft model Boeing 737-800. This aircraft has been in service for 26y, 4m. The aircraft has 166 seats.
Boeing 737-800
Punctuality (Departure)
87
%
Punctuality (Arrival)
97
%
Early on average
13 minutes
Age
26y, 4m
Seats
166
Flight Distance
--
Economy
First
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
94 cm
Legroom
53 cm
Seat width better than on 72% of flights
120°
Reclining Angle
2-2
Seat layout example
In-Flight Services
None
Live TV
Wi-Fi is available
Power outlet
Seat Information
86 cm
Legroom
--
Seat width
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 Thu, Oct 22 from LAS at approximately 05:52. This flight is expected to arrrive in IAH at 20:01.
| Date | Airport | Aircraft Model | Departure | Arrival | Status | |
|---|---|---|---|---|---|---|
| Departure | Arrival | |||||
| Sun, Oct 18 | Las Vegas (LAS) | Houston (IAH) | 739 | 05:53 | 20:15 | Arrived |
| Mon, Oct 19 | Las Vegas (LAS) | Houston (IAH) | B39M | 06:12 | 20:22 | Arrived |
| Tue, Oct 20 | San Francisco (SFO) | Houston (IAH) | 737 | 10:25 | 19:53 | Arrived |
| Wed, Oct 21 | Las Vegas (LAS) | Houston (IAH) | B39M | 05:55 | 19:59 | Arrived |
| Thu, Oct 22 | Las Vegas (LAS) | Houston (IAH) | 739 | 05:52 | 20:01 | Arrived |
| Fri, Oct 23 | Las Vegas (LAS) | Houston (IAH) | 738 | 05:45 | 20:33 | Scheduled |
| Sat, Oct 24 | San Francisco (SFO) | Houston (IAH) | 737 | 10:17 | 20:33 | 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 87% (Late on average 12 minutes), and the on-time arrival rate is 97% (Early on average 13 minutes).
On-Time Departures
Punctuality
87
%
Late on average
12 minutes
Early
0
%
On time
87
%
30 mins late
13
%
60 mins late
0
%
90 mins late
0
%
Cancelled
0
%
On-Time Arrivals
Punctuality
97
%
Early on average
13 minutes
Early
77
%
On time
20
%
30 mins late
0
%
60 mins late
0
%
90 mins late
3
%
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 23, 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 23, 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 23, 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 48 minutes; operating days may include Friday.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 23, 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 737-800 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
|
15°C - 30°C
Weather forecast for your arrival day
2 hour time difference
Time on arrival: Las Vegas 18:33
|
Houston 20:33
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