United Flight 1646 Deals & Information (2026/2027)

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United Flight 1646 Route Deals From $136

The cheapest prices found with in the last 7 days for return flights were $265 and $136 for one-way flights to San Francisco Intl. for the period specified. Prices and availability are subject to change. Additional terms apply.

Tue, Oct 27 - Wed, Oct 28
HNL
Daniel K. Inouye Intl.
SFO
San Francisco Intl.
$265 Roundtrip, found 4 days ago
$265
Roundtrip
found 4 days ago
Select United flight, departing Tue, Oct 27 from Daniel K. Inouye Intl. to San Francisco Intl., returning Wed, Oct 28, priced at $265 found 4 days ago
Thu, Oct 29 - Mon, Nov 2
HNL
Daniel K. Inouye Intl.
SFO
San Francisco Intl.
$280 Roundtrip, found 1 day ago
$280
Roundtrip
found 1 day ago
Select United flight, departing Thu, Oct 29 from Daniel K. Inouye Intl. to San Francisco Intl., returning Mon, Nov 2, priced at $280 found 1 day ago
Tue, Nov 3 - Wed, Nov 4
HNL
Daniel K. Inouye Intl.
SFO
San Francisco Intl.
$281 Roundtrip, found 2 days ago
$281
Roundtrip
found 2 days ago
Select United flight, departing Tue, Nov 3 from Daniel K. Inouye Intl. to San Francisco Intl., returning Wed, Nov 4, priced at $281 found 2 days ago
Wed, Oct 14 - Mon, Oct 19
HNL
Daniel K. Inouye Intl.
SFO
San Francisco Intl.
$284 Roundtrip, found 2 days ago
$284
Roundtrip
found 2 days ago
Select United flight, departing Wed, Oct 14 from Daniel K. Inouye Intl. to San Francisco Intl., returning Mon, Oct 19, priced at $284 found 2 days ago
Thu, Oct 15 - Tue, Oct 20
HNL
Daniel K. Inouye Intl.
SFO
San Francisco Intl.
$298 Roundtrip, found 2 days ago
$298
Roundtrip
found 2 days ago
Select United flight, departing Thu, Oct 15 from Daniel K. Inouye Intl. to San Francisco Intl., returning Tue, Oct 20, priced at $298 found 2 days 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.