United Flight WN5559 Deals & Information (2025/2026)

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United Flight 5559 Route Deals From $116

The cheapest prices found with in the last 7 days for return flights were $141 and $116 for one-way flights to Denver Intl. for the period specified. Prices and availability are subject to change. Additional terms apply.

Fri, Oct 31 - Sat, Nov 1
HDN
Yampa Valley
DEN
Denver Intl.
$141 Roundtrip, found 3 hours ago
$141
Roundtrip
found 3 hours ago
Select United flight, departing Fri, Oct 31 from Yampa Valley to Denver Intl., returning Sat, Nov 1, priced at $141 found 3 hours ago
Fri, Oct 31 - Sat, Nov 1
HDN
Yampa Valley
DEN
Denver Intl.
$203 Roundtrip, found 3 hours ago
$203
Roundtrip
found 3 hours ago
Select United flight, departing Fri, Oct 31 from Yampa Valley to Denver Intl., returning Sat, Nov 1, priced at $203 found 3 hours ago
Fri, Oct 31 - Sat, Nov 1
HDN
Yampa Valley
DEN
Denver Intl.
$232 Roundtrip, found 3 hours ago
$232
Roundtrip
found 3 hours ago
Select United flight, departing Fri, Oct 31 from Yampa Valley to Denver Intl., returning Sat, Nov 1, priced at $232 found 3 hours ago
Fri, Oct 31 - Sat, Nov 1
HDN
Yampa Valley
DEN
Denver Intl.
$278 Roundtrip, found 3 hours ago
$278
Roundtrip
found 3 hours ago
Select United flight, departing Fri, Oct 31 from Yampa Valley to Denver Intl., returning Sat, Nov 1, priced at $278 found 3 hours ago
Fri, Oct 31 - Sat, Nov 1
HDN
Yampa Valley
DEN
Denver Intl.
$288 Roundtrip, found 3 hours ago
$288
Roundtrip
found 3 hours ago
Select United flight, departing Fri, Oct 31 from Yampa Valley to Denver Intl., returning Sat, Nov 1, priced at $288 found 3 hours ago
Fri, Oct 31 - Sat, Nov 1
HDN
Yampa Valley
DEN
Denver Intl.
$294 Roundtrip, found 3 hours ago
$294
Roundtrip
found 3 hours ago
Select United flight, departing Fri, Oct 31 from Yampa Valley to Denver Intl., returning Sat, Nov 1, priced at $294 found 3 hours ago
Fri, Oct 31 - Sat, Nov 1
HDN
Yampa Valley
DEN
Denver Intl.
$299 Roundtrip, found 3 hours ago
$299
Roundtrip
found 3 hours ago
Select United flight, departing Fri, Oct 31 from Yampa Valley to Denver Intl., returning Sat, Nov 1, priced at $299 found 3 hours ago
Fri, Oct 31 - Sat, Nov 1
HDN
Yampa Valley
DEN
Denver Intl.
$341 Roundtrip, found 3 hours ago
$341
Roundtrip
found 3 hours ago
Select United flight, departing Fri, Oct 31 from Yampa Valley to Denver Intl., returning Sat, Nov 1, priced at $341 found 3 hours ago
Fri, Oct 31 - Sat, Nov 1
HDN
Yampa Valley
DEN
Denver Intl.
$350 Roundtrip, found 3 hours ago
$350
Roundtrip
found 3 hours ago
Select United flight, departing Fri, Oct 31 from Yampa Valley to Denver Intl., returning Sat, Nov 1, priced at $350 found 3 hours ago
Fri, Oct 31 - Sat, Nov 1
HDN
Yampa Valley
DEN
Denver Intl.
$364 Roundtrip, found 3 hours ago
$364
Roundtrip
found 3 hours ago
Select United flight, departing Fri, Oct 31 from Yampa Valley to Denver Intl., returning Sat, Nov 1, priced at $364 found 3 hours ago

Frequently asked questions

What route does flight number UA5559 take?
UA5559 is used on multiple routes, but the most common is between Denver Intl. Airport (DEN) and Sun Valley, ID Airport (SUN-Friedman Memorial). If you're lucky enough to score a direct flight, you'll disembark the plane in approximately 1 hour and 55 minutes. Multi-stop flights can also travel under the same number, as can flights on other routes.
What kind of plane is on flight number UA5559?
It's more than likely you'll be climbing aboard an Embraer 175 if you've reserved a ticket on flight UA5559 from DIA airport to SUN. It's the most commonly used aircraft model on this route.
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 UA5559 flight with Travelocity, please visit our Customer Service Portal.