United Flight 1684 Deals & Information (2026/2027)

Wander Wisely with exceptional service, 24/7 supportOpens in a new window

Feel at ease with free flight cancellations within 24 hours of booking

Change your flight without a fee on select flights

United Flight 1684 Route Deals From $134

The cheapest prices found with in the last 7 days for return flights were $261 and $134 for one-way flights to Lihue for the period specified. Prices and availability are subject to change. Additional terms apply.

Thu, May 7 - Thu, May 14
SFO
San Francisco Intl.
LIH
Lihue
$261 Roundtrip, found 1 day ago
$261
Roundtrip
found 1 day ago
Select United flight, departing Thu, May 7 from San Francisco Intl. to Lihue, returning Thu, May 14, priced at $261 found 1 day ago
Thu, May 7 - Tue, May 12
SFO
San Francisco Intl.
LIH
Lihue
$307 Roundtrip, found 1 day ago
$307
Roundtrip
found 1 day ago
Select United flight, departing Thu, May 7 from San Francisco Intl. to Lihue, returning Tue, May 12, priced at $307 found 1 day ago
Thu, May 7 - Thu, May 14
SFO
San Francisco Intl.
LIH
Lihue
$315 Roundtrip, found 1 day ago
$315
Roundtrip
found 1 day ago
Select United flight, departing Thu, May 7 from San Francisco Intl. to Lihue, returning Thu, May 14, priced at $315 found 1 day ago
Thu, May 7 - Thu, May 14
SFO
San Francisco Intl.
LIH
Lihue
$327 Roundtrip, found 1 day ago
$327
Roundtrip
found 1 day ago
Select United flight, departing Thu, May 7 from San Francisco Intl. to Lihue, returning Thu, May 14, priced at $327 found 1 day ago

Frequently asked questions

What route does flight number UA1684 take?
UA1684 operates direct from San Francisco, CA Airport (SFO-San Francisco Intl.) to Lihue Airport (LIH). During this trip, you'll be in the air for about 5 hours and 57 minutes. It pays to book ahead to secure your preferred seat.
What terminal does UA1684 fly out of?
Flight number UA1684 runs between San Francisco, CA Airport (SFO-San Francisco Intl.) and Lihue, HI Airport (LIH), and passengers with a seat on this flight generally jet off from Terminal 3.
What kind of plane is on flight number UA1684?
The route for flight number UA1684 is generally SFO to Lihue Airport (LIH), and the Boeing 737-800 is the type of aircraft you're likely to be heading off on.
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 UA1684 flight with Travelocity, please visit our Customer Service Portal.