United Airlines
UA643 Flight status
According to Trip.com real-time data, the UA643 flight operated by United Airlines on Aug 17, 2026 is scheduled to fly from Las Vegas (LAS) to Houston (IAH). The flight is expected to depart at 06:00 (local time in Las Vegas, UTC-7) and land at 20:29 (local time in Houston, UTC-5)
Sun, Aug 16
Mon, Aug 17
Tue, Aug 18
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Arrived
The flight has arrived 12m early
12h 29m
SFO
3h 10m
SNA
3h 25m
Check-in Counter
--
Boarding Gate
D57
Arrival Gate
10
Baggage
C6
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Scheduled
Your flight will depart on time.
12h 29m
SFO
3h 12m
SNA
3h 43m
Check-in Counter
--
Boarding Gate
D50
Arrival Gate
C3
Baggage
C6
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Scheduled
Your flight will depart on time.
12h 29m
SFO
2h 40m
SNA
3h 4m
Check-in Counter
--
Boarding Gate
D58
Arrival Gate
--
Baggage
--
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Information provided by VariFlight.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: Scheduled
UA2282
|
San Francisco (SFO)
Las Vegas (LAS)
Las Vegas (LAS)
Scheduled: 23:54
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UA643 Aircraft Details
According to Trip.com real-time data, the UA643 flight flying from Las Vegas to Houston on 8/17/2026 is operated by the aircraft model Boeing 737-800. This aircraft has been in service for 5y. The aircraft is equipped with Up to 227 seats.
Boeing 737-800
Punctuality (Departure)
97
%
Punctuality (Arrival)
93
%
Early on average
9 minutes
Age
5y
Seats
Up to 227
Flight Distance
--
Economy
Business
First
Premium Economy
In-Flight Services
None
Entertainment available, please bring your own device
Wi-Fi is unavailable
No power outlets are available
Seat Information
76 cm
More legroom than on 17% of flights
--
Seat width
100°
Reclining Angle
--
Seat layout example
In-Flight Services
Snacks
Entertainment available, please bring your own device
Wi-Fi is unavailable
Power outlet
Seat Information
94 cm
Legroom
53 cm
Seat width
120°
Reclining Angle
--
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 71% of flights
120°
Reclining Angle
--
Seat layout example
In-Flight Services
Snacks
Entertainment available, please bring your own device
Wi-Fi is unavailable
Power outlet
Seat Information
86 cm
Legroom
44 cm
Seat width better than on 47% of flights
100°
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 Sun, Aug 16 from LAS at approximately 06:03. This flight is expected to arrrive in IAH at 20:17.
| Date | Airport | Aircraft Model | Departure | Arrival | Status | |
|---|---|---|---|---|---|---|
| Departure | Arrival | |||||
| Wed, Aug 12 | Las Vegas (LAS) | Houston (IAH) | B38M | 06:09 | 20:15 | Arrived |
| Thu, Aug 13 | Las Vegas (LAS) | Houston (IAH) | B38M | 06:08 | 20:10 | Arrived |
| Fri, Aug 14 | Las Vegas (LAS) | Houston (IAH) | B38M | 06:09 | 20:09 | Arrived |
| Sat, Aug 15 | Las Vegas (LAS) | Houston (IAH) | 737 | 06:07 | 20:15 | Arrived |
| Sun, Aug 16 | Las Vegas (LAS) | Houston (IAH) | B38M | 06:03 | 20:17 | Arrived |
| Mon, Aug 17 | Las Vegas (LAS) | Houston (IAH) | B38M | 06:00 | 20:29 | Scheduled |
| Tue, Aug 18 | Las Vegas (LAS) | Houston (IAH) | B38M | 06:00 | 20:29 | 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 97% (Late on average 13 minutes), and the on-time arrival rate is 93% (Early on average 9 minutes).
On-Time Departures
Punctuality
97
%
Late on average
13 minutes
Early
0
%
On time
97
%
30 mins late
3
%
60 mins late
0
%
90 mins late
0
%
Cancelled
0
%
On-Time Arrivals
Punctuality
93
%
Early on average
9 minutes
Early
90
%
On time
3
%
30 mins late
3
%
60 mins late
0
%
90 mins late
3
%
Cancelled
0
%
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