United Flight 646 Deals & Information (2026/2027)

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United Flight 646 Route Deals From $189

The cheapest prices found with in the last 7 days for return flights were $377 and $189 for one-way flights to Salt Lake City Intl. for the period specified. Prices and availability are subject to change. Additional terms apply.

Tue, Nov 3 - Wed, Nov 11
EWR
Newark Liberty Intl. Airport
SLC
Salt Lake City Intl.
$377 Roundtrip, found 3 days ago
$377
Roundtrip
found 3 days ago
Select United flight, departing Tue, Nov 3 from Newark Liberty Intl. Airport to Salt Lake City Intl., returning Wed, Nov 11, priced at $377 found 3 days ago
Fri, Dec 11 - Mon, Dec 14
EWR
Newark Liberty Intl. Airport
SLC
Salt Lake City Intl.
$387 Roundtrip, just found
$387
Roundtrip
just found
Select United flight, departing Fri, Dec 11 from Newark Liberty Intl. Airport to Salt Lake City Intl., returning Mon, Dec 14, priced at $387 just found
Mon, Nov 16 - Wed, Nov 18
EWR
Newark Liberty Intl. Airport
SLC
Salt Lake City Intl.
$391 Roundtrip, found 6 days ago
$391
Roundtrip
found 6 days ago
Select United flight, departing Mon, Nov 16 from Newark Liberty Intl. Airport to Salt Lake City Intl., returning Wed, Nov 18, priced at $391 found 6 days ago
Fri, Dec 11 - Mon, Dec 14
EWR
Newark Liberty Intl. Airport
SLC
Salt Lake City Intl.
$392 Roundtrip, just found
$392
Roundtrip
just found
Select United flight, departing Fri, Dec 11 from Newark Liberty Intl. Airport to Salt Lake City Intl., returning Mon, Dec 14, priced at $392 just found
Mon, Jan 11 - Fri, Jan 15
EWR
Newark Liberty Intl. Airport
SLC
Salt Lake City Intl.
$393 Roundtrip, found 1 day ago
$393
Roundtrip
found 1 day 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 1 day ago
Sat, Jan 30 - Sat, Feb 6
EWR
Newark Liberty Intl. Airport
SLC
Salt Lake City Intl.
$396 Roundtrip, found 1 day ago
$396
Roundtrip
found 1 day 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 1 day ago
Fri, Dec 11 - Mon, Dec 14
EWR
Newark Liberty Intl. Airport
SLC
Salt Lake City Intl.
$397 Roundtrip, just found
$397
Roundtrip
just found
Select United flight, departing Fri, Dec 11 from Newark Liberty Intl. Airport to Salt Lake City Intl., returning Mon, Dec 14, priced at $397 just found
Mon, Jan 11 - Fri, Jan 15
EWR
Newark Liberty Intl. Airport
SLC
Salt Lake City Intl.
$399 Roundtrip, found 1 day ago
$399
Roundtrip
found 1 day 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 1 day ago
Mon, Nov 16 - Wed, Nov 18
EWR
Newark Liberty Intl. Airport
SLC
Salt Lake City Intl.
$401 Roundtrip, found 6 days ago
$401
Roundtrip
found 6 days ago
Select United flight, departing Mon, Nov 16 from Newark Liberty Intl. Airport to Salt Lake City Intl., returning Wed, Nov 18, priced at $401 found 6 days ago
Fri, Dec 11 - Mon, Dec 14
EWR
Newark Liberty Intl. Airport
SLC
Salt Lake City Intl.
$402 Roundtrip, just found
$402
Roundtrip
just found
Select United flight, departing Fri, Dec 11 from Newark Liberty Intl. Airport to Salt Lake City Intl., returning Mon, Dec 14, priced at $402 just found

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.