United Flight 646 Deals & Information (2026/2027)

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United Flight 646 Route Deals From $184

The cheapest prices found with in the last 7 days for return flights were $367 and $184 for one-way flights to Salt Lake City Intl. for the period specified. Prices and availability are subject to change. Additional terms apply.

Thu, Nov 19 - Sat, Nov 21
EWR
Newark Liberty Intl. Airport
SLC
Salt Lake City Intl.
$367 Roundtrip, found 1 hour ago
$367
Roundtrip
found 1 hour ago
Select United flight, departing Thu, Nov 19 from Newark Liberty Intl. Airport to Salt Lake City Intl., returning Sat, Nov 21, priced at $367 found 1 hour ago
Thu, Nov 19 - Sat, Nov 21
EWR
Newark Liberty Intl. Airport
SLC
Salt Lake City Intl.
$377 Roundtrip, found 1 hour ago
$377
Roundtrip
found 1 hour ago
Select United flight, departing Thu, Nov 19 from Newark Liberty Intl. Airport to Salt Lake City Intl., returning Sat, Nov 21, priced at $377 found 1 hour ago
Thu, Nov 19 - Sat, Nov 21
EWR
Newark Liberty Intl. Airport
SLC
Salt Lake City Intl.
$384 Roundtrip, found 1 hour ago
$384
Roundtrip
found 1 hour ago
Select United flight, departing Thu, Nov 19 from Newark Liberty Intl. Airport to Salt Lake City Intl., returning Sat, Nov 21, priced at $384 found 1 hour ago
Fri, Dec 11 - Mon, Dec 14
EWR
Newark Liberty Intl. Airport
SLC
Salt Lake City Intl.
$387 Roundtrip, found 1 hour ago
$387
Roundtrip
found 1 hour ago
Select United flight, departing Fri, Dec 11 from Newark Liberty Intl. Airport to Salt Lake City Intl., returning Mon, Dec 14, priced at $387 found 1 hour ago
Fri, Jan 8 - Thu, Jan 14
EWR
Newark Liberty Intl. Airport
SLC
Salt Lake City Intl.
$392 Roundtrip, found 1 hour ago
$392
Roundtrip
found 1 hour ago
Select United flight, departing Fri, Jan 8 from Newark Liberty Intl. Airport to Salt Lake City Intl., returning Thu, Jan 14, priced at $392 found 1 hour ago
Mon, Jan 11 - Fri, Jan 15
EWR
Newark Liberty Intl. Airport
SLC
Salt Lake City Intl.
$393 Roundtrip, found 2 days ago
$393
Roundtrip
found 2 days ago
Select United flight, departing Mon, Jan 11 from Newark Liberty Intl. Airport to Salt Lake City Intl., returning Fri, Jan 15, priced at $393 found 2 days ago
Sat, Jan 30 - Sat, Feb 6
EWR
Newark Liberty Intl. Airport
SLC
Salt Lake City Intl.
$396 Roundtrip, found 2 days ago
$396
Roundtrip
found 2 days ago
Select United flight, departing Sat, Jan 30 from Newark Liberty Intl. Airport to Salt Lake City Intl., returning Sat, Feb 6, priced at $396 found 2 days ago
Fri, Dec 11 - Mon, Dec 14
EWR
Newark Liberty Intl. Airport
SLC
Salt Lake City Intl.
$397 Roundtrip, found 1 hour ago
$397
Roundtrip
found 1 hour ago
Select United flight, departing Fri, Dec 11 from Newark Liberty Intl. Airport to Salt Lake City Intl., returning Mon, Dec 14, priced at $397 found 1 hour ago
Mon, Jan 11 - Fri, Jan 15
EWR
Newark Liberty Intl. Airport
SLC
Salt Lake City Intl.
$399 Roundtrip, found 2 days ago
$399
Roundtrip
found 2 days ago
Select United flight, departing Mon, Jan 11 from Newark Liberty Intl. Airport to Salt Lake City Intl., returning Fri, Jan 15, priced at $399 found 2 days ago
Mon, Jan 11 - Fri, Jan 15
EWR
Newark Liberty Intl. Airport
SLC
Salt Lake City Intl.
$403 Roundtrip, found 2 days ago
$403
Roundtrip
found 2 days ago
Select United flight, departing Mon, Jan 11 from Newark Liberty Intl. Airport to Salt Lake City Intl., returning Fri, Jan 15, priced at $403 found 2 days ago

Frequently asked questions

What route does flight number UA646 take?
UA646 flies directly between Salt Lake City, UT Airport (SLC-Salt Lake City Intl.) and Houston, TX Airport (IAH-George Bush Intercontinental) in roughly 2 hours and 58 minutes. It can sometimes be used on other routes though, some of which could be multi-stop journeys. Keep an eye out for this when locking in your airfare to avoid any mix-ups.
What kind of plane is on flight number UA646?
It's likely you'll be heading off on a Boeing 737-800 if you're flying from Salt Lake City Intl. Airport to George Bush Intercontinental Airport (IAH), the most popular route for flight UA646.
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 UA646 flight with Travelocity, please visit our Customer Service Portal.