United Flight 646 Deals & Information (2026/2027)

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United Flight 646 Route Deals From $191

The cheapest prices found with in the last 7 days for return flights were $387 and $191 for one-way flights to Salt Lake City Intl. for the period specified. Prices and availability are subject to change. Additional terms apply.

Thu, Dec 10 - Sun, Dec 13
EWR
Newark Liberty Intl. Airport
SLC
Salt Lake City Intl.
$387 Roundtrip, just found
$387
Roundtrip
just found
Select United flight, departing Thu, Dec 10 from Newark Liberty Intl. Airport to Salt Lake City Intl., returning Sun, Dec 13, priced at $387 just found
Thu, Nov 5 - Thu, Dec 3
EWR
Newark Liberty Intl. Airport
SLC
Salt Lake City Intl.
$398 Roundtrip, found 2 days ago
$398
Roundtrip
found 2 days ago
Select United flight, departing Thu, Nov 5 from Newark Liberty Intl. Airport to Salt Lake City Intl., returning Thu, Dec 3, priced at $398 found 2 days ago
Fri, Dec 11 - Mon, Dec 14
EWR
Newark Liberty Intl. Airport
SLC
Salt Lake City Intl.
$401 Roundtrip, found 2 days ago
$401
Roundtrip
found 2 days ago
Select United flight, departing Fri, Dec 11 from Newark Liberty Intl. Airport to Salt Lake City Intl., returning Mon, Dec 14, priced at $401 found 2 days ago
Thu, Dec 10 - Sun, Dec 13
EWR
Newark Liberty Intl. Airport
SLC
Salt Lake City Intl.
$402 Roundtrip, just found
$402
Roundtrip
just found
Select United flight, departing Thu, Dec 10 from Newark Liberty Intl. Airport to Salt Lake City Intl., returning Sun, Dec 13, priced at $402 just found
Thu, Dec 10 - Sun, Dec 13
EWR
Newark Liberty Intl. Airport
SLC
Salt Lake City Intl.
$403 Roundtrip, just found
$403
Roundtrip
just found
Select United flight, departing Thu, Dec 10 from Newark Liberty Intl. Airport to Salt Lake City Intl., returning Sun, Dec 13, priced at $403 just found
Fri, Dec 11 - Mon, Dec 14
EWR
Newark Liberty Intl. Airport
SLC
Salt Lake City Intl.
$404 Roundtrip, found 2 days ago
$404
Roundtrip
found 2 days ago
Select United flight, departing Fri, Dec 11 from Newark Liberty Intl. Airport to Salt Lake City Intl., returning Mon, Dec 14, priced at $404 found 2 days ago
Fri, Dec 11 - Mon, Dec 14
EWR
Newark Liberty Intl. Airport
SLC
Salt Lake City Intl.
$411 Roundtrip, found 2 days ago
$411
Roundtrip
found 2 days ago
Select United flight, departing Fri, Dec 11 from Newark Liberty Intl. Airport to Salt Lake City Intl., returning Mon, Dec 14, priced at $411 found 2 days ago
Fri, Dec 11 - Mon, Dec 14
EWR
Newark Liberty Intl. Airport
SLC
Salt Lake City Intl.
$412 Roundtrip, found 2 days ago
$412
Roundtrip
found 2 days ago
Select United flight, departing Fri, Dec 11 from Newark Liberty Intl. Airport to Salt Lake City Intl., returning Mon, Dec 14, priced at $412 found 2 days ago
Fri, Dec 11 - Mon, Dec 14
EWR
Newark Liberty Intl. Airport
SLC
Salt Lake City Intl.
$415 Roundtrip, found 2 days ago
$415
Roundtrip
found 2 days ago
Select United flight, departing Fri, Dec 11 from Newark Liberty Intl. Airport to Salt Lake City Intl., returning Mon, Dec 14, priced at $415 found 2 days ago
Fri, Dec 11 - Mon, Dec 14
EWR
Newark Liberty Intl. Airport
SLC
Salt Lake City Intl.
$422 Roundtrip, found 2 days ago
$422
Roundtrip
found 2 days ago
Select United flight, departing Fri, Dec 11 from Newark Liberty Intl. Airport to Salt Lake City Intl., returning Mon, Dec 14, priced at $422 found 2 days ago
Thu, Nov 5 - Thu, Dec 3
EWR
Newark Liberty Intl. Airport
SLC
Salt Lake City Intl.
$424 Roundtrip, found 2 days ago
$424
Roundtrip
found 2 days ago
Select United flight, departing Thu, Nov 5 from Newark Liberty Intl. Airport to Salt Lake City Intl., returning Thu, Dec 3, priced at $424 found 2 days ago
Fri, Dec 11 - Mon, Dec 14
EWR
Newark Liberty Intl. Airport
SLC
Salt Lake City Intl.
$426 Roundtrip, found 2 days ago
$426
Roundtrip
found 2 days ago
Select United flight, departing Fri, Dec 11 from Newark Liberty Intl. Airport to Salt Lake City Intl., returning Mon, Dec 14, priced at $426 found 2 days ago
Tue, Jan 12 - Sun, Jan 17
EWR
Newark Liberty Intl. Airport
SLC
Salt Lake City Intl.
$445 Roundtrip, just found
$445
Roundtrip
just found
Select United flight, departing Tue, Jan 12 from Newark Liberty Intl. Airport to Salt Lake City Intl., returning Sun, Jan 17, priced at $445 just found
Thu, Dec 10 - Sun, Dec 13
EWR
Newark Liberty Intl. Airport
SLC
Salt Lake City Intl.
$445 Roundtrip, just found
$445
Roundtrip
just found
Select United flight, departing Thu, Dec 10 from Newark Liberty Intl. Airport to Salt Lake City Intl., returning Sun, Dec 13, priced at $445 just found
Thu, Dec 10 - Fri, Dec 11
EWR
Newark Liberty Intl. Airport
SLC
Salt Lake City Intl.
$447 Roundtrip, just found
$447
Roundtrip
just found
Select United flight, departing Thu, Dec 10 from Newark Liberty Intl. Airport to Salt Lake City Intl., returning Fri, Dec 11, priced at $447 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.