United Flight WN5666 Deals & Information (2025/2026)

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 5666 Route Deals From $72

The cheapest prices found with in the last 7 days for return flights were $109 and $72 for one-way flights to Denver Intl. for the period specified. Prices and availability are subject to change. Additional terms apply.

Mon, Sep 29 - Thu, Oct 2
SLC
Salt Lake City Intl.
DEN
Denver Intl.
$109 Roundtrip, found 2 days ago
$109
Roundtrip
found 2 days ago
Select United flight, departing Mon, Sep 29 from Salt Lake City Intl. to Denver Intl., returning Thu, Oct 2, priced at $109 found 2 days ago
Mon, Sep 29 - Thu, Oct 2
SLC
Salt Lake City Intl.
DEN
Denver Intl.
$123 Roundtrip, found 2 days ago
$123
Roundtrip
found 2 days ago
Select United flight, departing Mon, Sep 29 from Salt Lake City Intl. to Denver Intl., returning Thu, Oct 2, priced at $123 found 2 days ago
Sat, Aug 2 - Thu, Aug 7
SLC
Salt Lake City Intl.
DEN
Denver Intl.
$125 Roundtrip, found 1 day ago
$125
Roundtrip
found 1 day ago
Select United flight, departing Sat, Aug 2 from Salt Lake City Intl. to Denver Intl., returning Thu, Aug 7, priced at $125 found 1 day ago
Wed, Aug 20 - Sat, Aug 23
SLC
Salt Lake City Intl.
DEN
Denver Intl.
$127 Roundtrip, found 20 hours ago
$127
Roundtrip
found 20 hours ago
Select United flight, departing Wed, Aug 20 from Salt Lake City Intl. to Denver Intl., returning Sat, Aug 23, priced at $127 found 20 hours ago
Wed, Aug 20 - Sat, Aug 23
SLC
Salt Lake City Intl.
DEN
Denver Intl.
$130 Roundtrip, found 20 hours ago
$130
Roundtrip
found 20 hours ago
Select United flight, departing Wed, Aug 20 from Salt Lake City Intl. to Denver Intl., returning Sat, Aug 23, priced at $130 found 20 hours ago
Mon, Sep 29 - Thu, Oct 2
SLC
Salt Lake City Intl.
DEN
Denver Intl.
$132 Roundtrip, found 2 days ago
$132
Roundtrip
found 2 days ago
Select United flight, departing Mon, Sep 29 from Salt Lake City Intl. to Denver Intl., returning Thu, Oct 2, priced at $132 found 2 days ago

Frequently asked questions

What route does flight number UA5666 take?
UA5666 flies straight from Asheville, NC Airport (AVL-Asheville Regional) to O’Hare Intl. Airport (ORD). During this trip, expect to be in the air for about 2 hours. It pays to book ahead to secure your favorite seat.
What kind of plane is on flight number UA5666?
You’ll probably be hopping on board a Bombardier CRJ if you’re on flight number UA5666. Generally, this flight takes off from Asheville Regional Airport (AVL) and lands at Chicago, IL Airport (ORD-O’Hare Intl.).
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 UA5666 flight with Travelocity, please visit our Customer Service Portal.