United Flight 1646 Deals & Information (2026/2027)

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United Flight 1646 Route Deals From $156

The cheapest prices found with in the last 7 days for return flights were $300 and $156 for one-way flights to San Francisco Intl. for the period specified. Prices and availability are subject to change. Additional terms apply.

Fri, Nov 6 - Sun, Nov 8
HNL
Daniel K. Inouye Intl.
SFO
San Francisco Intl.
$300 Roundtrip, found 4 days ago
$300
Roundtrip
found 4 days ago
Select United flight, departing Fri, Nov 6 from Daniel K. Inouye Intl. to San Francisco Intl., returning Sun, Nov 8, priced at $300 found 4 days ago
Tue, Oct 20 - Tue, Oct 27
HNL
Daniel K. Inouye Intl.
SFO
San Francisco Intl.
$315 Roundtrip, found 22 hours ago
$315
Roundtrip
found 22 hours ago
Select United flight, departing Tue, Oct 20 from Daniel K. Inouye Intl. to San Francisco Intl., returning Tue, Oct 27, priced at $315 found 22 hours ago
Thu, Nov 5 - Wed, Nov 11
HNL
Daniel K. Inouye Intl.
SFO
San Francisco Intl.
$325 Roundtrip, found 5 days ago
$325
Roundtrip
found 5 days ago
Select United flight, departing Thu, Nov 5 from Daniel K. Inouye Intl. to San Francisco Intl., returning Wed, Nov 11, priced at $325 found 5 days ago
Fri, Nov 6 - Sun, Nov 8
HNL
Daniel K. Inouye Intl.
SFO
San Francisco Intl.
$328 Roundtrip, found 4 days ago
$328
Roundtrip
found 4 days ago
Select United flight, departing Fri, Nov 6 from Daniel K. Inouye Intl. to San Francisco Intl., returning Sun, Nov 8, priced at $328 found 4 days ago
Tue, Oct 20 - Tue, Oct 27
HNL
Daniel K. Inouye Intl.
SFO
San Francisco Intl.
$331 Roundtrip, found 22 hours ago
$331
Roundtrip
found 22 hours ago
Select United flight, departing Tue, Oct 20 from Daniel K. Inouye Intl. to San Francisco Intl., returning Tue, Oct 27, priced at $331 found 22 hours ago
Tue, Oct 20 - Tue, Oct 27
HNL
Daniel K. Inouye Intl.
SFO
San Francisco Intl.
$335 Roundtrip, found 22 hours ago
$335
Roundtrip
found 22 hours ago
Select United flight, departing Tue, Oct 20 from Daniel K. Inouye Intl. to San Francisco Intl., returning Tue, Oct 27, priced at $335 found 22 hours ago
Tue, Oct 20 - Tue, Oct 27
HNL
Daniel K. Inouye Intl.
SFO
San Francisco Intl.
$341 Roundtrip, found 22 hours ago
$341
Roundtrip
found 22 hours ago
Select United flight, departing Tue, Oct 20 from Daniel K. Inouye Intl. to San Francisco Intl., returning Tue, Oct 27, priced at $341 found 22 hours 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.