United Flight 5559 Deals & Information (2026/2027)

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United Flight 5559 Route Deals From $224

The cheapest prices found with in the last 7 days for return flights were $215 and $224 for one-way flights to Denver Intl. for the period specified. Prices and availability are subject to change. Additional terms apply.

Thu, Apr 16 - Sat, Apr 18
BIS
Bismarck Municipal
DEN
Denver Intl.
$215 Roundtrip, found 3 days ago
$215
Roundtrip
found 3 days ago
Select United flight, departing Thu, Apr 16 from Bismarck Municipal to Denver Intl., returning Sat, Apr 18, priced at $215 found 3 days ago
Fri, Apr 17 - Sun, Apr 19
BIS
Bismarck Municipal
DEN
Denver Intl.
$235 Roundtrip, found 3 days ago
$235
Roundtrip
found 3 days ago
Select United flight, departing Fri, Apr 17 from Bismarck Municipal to Denver Intl., returning Sun, Apr 19, priced at $235 found 3 days ago
Sat, Apr 18 - Mon, Apr 20
BIS
Bismarck Municipal
DEN
Denver Intl.
$243 Roundtrip, found 3 days ago
$243
Roundtrip
found 3 days ago
Select United flight, departing Sat, Apr 18 from Bismarck Municipal to Denver Intl., returning Mon, Apr 20, priced at $243 found 3 days ago
Sat, Aug 15 - Tue, Aug 18
BIS
Bismarck Municipal
DEN
Denver Intl.
$252 Roundtrip, found 1 day ago
$252
Roundtrip
found 1 day ago
Select United flight, departing Sat, Aug 15 from Bismarck Municipal to Denver Intl., returning Tue, Aug 18, priced at $252 found 1 day ago
Thu, May 14 - Sun, May 17
BIS
Bismarck Municipal
DEN
Denver Intl.
$258 Roundtrip, found 5 days ago
$258
Roundtrip
found 5 days ago
Select United flight, departing Thu, May 14 from Bismarck Municipal to Denver Intl., returning Sun, May 17, priced at $258 found 5 days ago
Sat, Aug 15 - Tue, Aug 18
BIS
Bismarck Municipal
DEN
Denver Intl.
$266 Roundtrip, found 1 day ago
$266
Roundtrip
found 1 day ago
Select United flight, departing Sat, Aug 15 from Bismarck Municipal to Denver Intl., returning Tue, Aug 18, priced at $266 found 1 day ago
Sat, Aug 15 - Tue, Aug 18
BIS
Bismarck Municipal
DEN
Denver Intl.
$273 Roundtrip, found 1 day ago
$273
Roundtrip
found 1 day ago
Select United flight, departing Sat, Aug 15 from Bismarck Municipal to Denver Intl., returning Tue, Aug 18, priced at $273 found 1 day ago
Thu, May 14 - Sun, May 17
BIS
Bismarck Municipal
DEN
Denver Intl.
$280 Roundtrip, found 5 days ago
$280
Roundtrip
found 5 days ago
Select United flight, departing Thu, May 14 from Bismarck Municipal to Denver Intl., returning Sun, May 17, priced at $280 found 5 days ago
Sat, Aug 15 - Tue, Aug 18
BIS
Bismarck Municipal
DEN
Denver Intl.
$285 Roundtrip, found 1 day ago
$285
Roundtrip
found 1 day ago
Select United flight, departing Sat, Aug 15 from Bismarck Municipal to Denver Intl., returning Tue, Aug 18, priced at $285 found 1 day ago
Sat, Aug 15 - Tue, Aug 18
BIS
Bismarck Municipal
DEN
Denver Intl.
$288 Roundtrip, found 1 day ago
$288
Roundtrip
found 1 day ago
Select United flight, departing Sat, Aug 15 from Bismarck Municipal to Denver Intl., returning Tue, Aug 18, priced at $288 found 1 day 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.