United Flight 5128 Deals & Information (2025/2026)

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United Flight 5128 Route Deals From $158

The cheapest prices found with in the last 7 days for return flights were $217 and $158 for one-way flights to Denver Intl. for the period specified. Prices and availability are subject to change. Additional terms apply.

Wed, Oct 22 - Mon, Oct 27
SUX
Sioux Gateway
DEN
Denver Intl.
$217 Roundtrip, found 5 days ago
$217
Roundtrip
found 5 days ago
Select United flight, departing Wed, Oct 22 from Sioux Gateway to Denver Intl., returning Mon, Oct 27, priced at $217 found 5 days ago
Fri, Jan 23 - Sun, Jan 25
SUX
Sioux Gateway
DEN
Denver Intl.
$219 Roundtrip, found 2 days ago
$219
Roundtrip
found 2 days ago
Select United flight, departing Fri, Jan 23 from Sioux Gateway to Denver Intl., returning Sun, Jan 25, priced at $219 found 2 days ago
Wed, Oct 22 - Mon, Oct 27
SUX
Sioux Gateway
DEN
Denver Intl.
$258 Roundtrip, found 5 days ago
$258
Roundtrip
found 5 days ago
Select United flight, departing Wed, Oct 22 from Sioux Gateway to Denver Intl., returning Mon, Oct 27, priced at $258 found 5 days ago
Fri, Jan 23 - Sun, Jan 25
SUX
Sioux Gateway
DEN
Denver Intl.
$260 Roundtrip, found 2 days ago
$260
Roundtrip
found 2 days ago
Select United flight, departing Fri, Jan 23 from Sioux Gateway to Denver Intl., returning Sun, Jan 25, priced at $260 found 2 days ago
Thu, Oct 9 - Fri, Oct 10
SUX
Sioux Gateway
DEN
Denver Intl.
$310 Roundtrip, found 2 days ago
$310
Roundtrip
found 2 days ago
Select United flight, departing Thu, Oct 9 from Sioux Gateway to Denver Intl., returning Fri, Oct 10, priced at $310 found 2 days ago
Mon, Oct 6 - Tue, Oct 7
SUX
Sioux Gateway
DEN
Denver Intl.
$314 Roundtrip, found 2 days ago
$314
Roundtrip
found 2 days ago
Select United flight, departing Mon, Oct 6 from Sioux Gateway to Denver Intl., returning Tue, Oct 7, priced at $314 found 2 days ago
Sun, Jan 25 - Tue, Jan 27
SUX
Sioux Gateway
DEN
Denver Intl.
$317 Roundtrip, found 2 days ago
$317
Roundtrip
found 2 days ago
Select United flight, departing Sun, Jan 25 from Sioux Gateway to Denver Intl., returning Tue, Jan 27, priced at $317 found 2 days ago
Thu, Oct 9 - Fri, Oct 10
SUX
Sioux Gateway
DEN
Denver Intl.
$350 Roundtrip, found 2 days ago
$350
Roundtrip
found 2 days ago
Select United flight, departing Thu, Oct 9 from Sioux Gateway to Denver Intl., returning Fri, Oct 10, priced at $350 found 2 days ago
Mon, Oct 6 - Tue, Oct 7
SUX
Sioux Gateway
DEN
Denver Intl.
$355 Roundtrip, found 2 days ago
$355
Roundtrip
found 2 days ago
Select United flight, departing Mon, Oct 6 from Sioux Gateway to Denver Intl., returning Tue, Oct 7, priced at $355 found 2 days ago
Sun, Oct 12 - Sat, Oct 18
SUX
Sioux Gateway
DEN
Denver Intl.
$355 Roundtrip, found 1 day ago
$355
Roundtrip
found 1 day ago
Select United flight, departing Sun, Oct 12 from Sioux Gateway to Denver Intl., returning Sat, Oct 18, priced at $355 found 1 day ago

Frequently asked questions

What route does flight number UA5128 take?
Flight number UA5128 takes about 1 hour and 15 minutes to fly directly from Southwest Wyoming Regional Airport to DIA airport. We all know there's magic in the destination, but the journey is always half the fun!
What kind of plane is on flight number UA5128?
The Bombardier CRJ is the kind of plane predominantly used for flight UA5128. More often than not, this flight takes off from Sweetwater County Airport (RKS) and comes in to land at Denver, CO Airport (DEN-Denver 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 UA5128 flight with Travelocity, please visit our Customer Service Portal.