United Flight UA1646 Deals & Information (2025/2026)

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United Flight 1646 Route Deals From $71

The cheapest prices found with in the last 7 days for return flights were $226 and $71 for one-way flights to George Bush Intercontinental for the period specified. Prices and availability are subject to change. Additional terms apply.

Thu, Oct 16 - Sun, Oct 19
AUS
Austin-Bergstrom Intl.
IAH
George Bush Intercontinental
$226 Roundtrip, found 6 days ago
$226
Roundtrip
found 6 days ago
Select United flight, departing Thu, Oct 16 from Austin-Bergstrom Intl. to George Bush Intercontinental, returning Sun, Oct 19, priced at $226 found 6 days ago
Thu, Oct 16 - Sun, Oct 19
AUS
Austin-Bergstrom Intl.
IAH
George Bush Intercontinental
$237 Roundtrip, found 6 days ago
$237
Roundtrip
found 6 days ago
Select United flight, departing Thu, Oct 16 from Austin-Bergstrom Intl. to George Bush Intercontinental, returning Sun, Oct 19, priced at $237 found 6 days ago
Thu, Oct 16 - Sun, Oct 19
AUS
Austin-Bergstrom Intl.
IAH
George Bush Intercontinental
$241 Roundtrip, found 6 days ago
$241
Roundtrip
found 6 days ago
Select United flight, departing Thu, Oct 16 from Austin-Bergstrom Intl. to George Bush Intercontinental, returning Sun, Oct 19, priced at $241 found 6 days ago
Sat, Oct 18 - Sun, Oct 19
AUS
Austin-Bergstrom Intl.
IAH
George Bush Intercontinental
$244 Roundtrip, found 5 days ago
$244
Roundtrip
found 5 days ago
Select United flight, departing Sat, Oct 18 from Austin-Bergstrom Intl. to George Bush Intercontinental, returning Sun, Oct 19, priced at $244 found 5 days ago
Thu, Oct 16 - Sun, Oct 19
AUS
Austin-Bergstrom Intl.
IAH
George Bush Intercontinental
$246 Roundtrip, found 6 days ago
$246
Roundtrip
found 6 days ago
Select United flight, departing Thu, Oct 16 from Austin-Bergstrom Intl. to George Bush Intercontinental, returning Sun, Oct 19, priced at $246 found 6 days ago
Sat, Oct 18 - Sun, Oct 19
AUS
Austin-Bergstrom Intl.
IAH
George Bush Intercontinental
$254 Roundtrip, found 5 days ago
$254
Roundtrip
found 5 days ago
Select United flight, departing Sat, Oct 18 from Austin-Bergstrom Intl. to George Bush Intercontinental, returning Sun, Oct 19, priced at $254 found 5 days ago
Sat, Nov 1 - Thu, Nov 6
AUS
Austin-Bergstrom Intl.
IAH
George Bush Intercontinental
$258 Roundtrip, found 1 day ago
$258
Roundtrip
found 1 day ago
Select United flight, departing Sat, Nov 1 from Austin-Bergstrom Intl. to George Bush Intercontinental, returning Thu, Nov 6, priced at $258 found 1 day ago
Thu, Oct 16 - Sun, Oct 19
AUS
Austin-Bergstrom Intl.
IAH
George Bush Intercontinental
$260 Roundtrip, found 6 days ago
$260
Roundtrip
found 6 days ago
Select United flight, departing Thu, Oct 16 from Austin-Bergstrom Intl. to George Bush Intercontinental, returning Sun, Oct 19, priced at $260 found 6 days ago
Sat, Oct 18 - Sun, Oct 19
AUS
Austin-Bergstrom Intl.
IAH
George Bush Intercontinental
$268 Roundtrip, found 5 days ago
$268
Roundtrip
found 5 days ago
Select United flight, departing Sat, Oct 18 from Austin-Bergstrom Intl. to George Bush Intercontinental, returning Sun, Oct 19, priced at $268 found 5 days ago
Sat, Nov 1 - Thu, Nov 6
AUS
Austin-Bergstrom Intl.
IAH
George Bush Intercontinental
$271 Roundtrip, found 1 day ago
$271
Roundtrip
found 1 day ago
Select United flight, departing Sat, Nov 1 from Austin-Bergstrom Intl. to George Bush Intercontinental, returning Thu, Nov 6, priced at $271 found 1 day ago

Frequently asked questions

What route does flight number UA1646 take?
UA1646 operates directly from Houston Airport to Las Vegas, NV Airport (LAS-McCarran Intl.). During this journey, you can expect to be in the air for approximately 3 hours and 18 minutes. It pays to book ahead to secure your favorite seat.
How often is UA1646 on time?
United Airlines flight number UA1646 from Houston Airport to McCarran Intl. Airport (LAS) leaves according to schedule 85% of the time — so you can relaxing knowing you'll arrive at your destination ASAP. If your flight happens to be late, the average wait is approximately 11 minutes. This route has a star rating of 3.65.
What terminal does UA1646 fly out of?
Travelers with seats booked on flight number UA1646 from George Bush Intercontinental Airport (IAH) to McCarran Airport usually board the plane from Terminal C.
What kind of plane is on flight number UA1646?
You're likely to find yourself hopping on board a Boeing 737-800 if you're on flight UA1646. This flight almost always heads off from IAH and arrives at McCarran Airport.
If I am not able to travel due to COVID-19, can I change my flight to a later date?
For more info about changing your UA1646 flight with Travelocity, please visit our Customer Service Portal.