United Flight 5559 Deals & Information (2026/2027)

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United Flight 5559 Route Deals From $115

The cheapest prices found with in the last 7 days for return flights were $207 and $115 for one-way flights to O'Hare Intl. for the period specified. Prices and availability are subject to change. Additional terms apply.

Tue, Sep 29 - Thu, Oct 1
MKE
General Mitchell Intl.
ORD
O'Hare Intl.
$207 Roundtrip, found 16 hours ago
$207
Roundtrip
found 16 hours ago
Select United flight, departing Tue, Sep 29 from General Mitchell Intl. to O'Hare Intl., returning Thu, Oct 1, priced at $207 found 16 hours ago
Fri, Jul 31 - Fri, Aug 14
MKE
General Mitchell Intl.
ORD
O'Hare Intl.
$219 Roundtrip, found 22 hours ago
$219
Roundtrip
found 22 hours ago
Select United flight, departing Fri, Jul 31 from General Mitchell Intl. to O'Hare Intl., returning Fri, Aug 14, priced at $219 found 22 hours ago
Wed, Jun 3 - Sun, Jun 7
MKE
General Mitchell Intl.
ORD
O'Hare Intl.
$230 Roundtrip, found 12 hours ago
$230
Roundtrip
found 12 hours ago
Select United flight, departing Wed, Jun 3 from General Mitchell Intl. to O'Hare Intl., returning Sun, Jun 7, priced at $230 found 12 hours ago
Thu, Jun 4 - Tue, Jun 9
MKE
General Mitchell Intl.
ORD
O'Hare Intl.
$232 Roundtrip, found 5 days ago
$232
Roundtrip
found 5 days ago
Select United flight, departing Thu, Jun 4 from General Mitchell Intl. to O'Hare Intl., returning Tue, Jun 9, priced at $232 found 5 days ago
Fri, Jul 31 - Fri, Aug 14
MKE
General Mitchell Intl.
ORD
O'Hare Intl.
$235 Roundtrip, found 22 hours ago
$235
Roundtrip
found 22 hours ago
Select United flight, departing Fri, Jul 31 from General Mitchell Intl. to O'Hare Intl., returning Fri, Aug 14, priced at $235 found 22 hours ago
Wed, Jun 3 - Sun, Jun 7
MKE
General Mitchell Intl.
ORD
O'Hare Intl.
$238 Roundtrip, found 12 hours ago
$238
Roundtrip
found 12 hours ago
Select United flight, departing Wed, Jun 3 from General Mitchell Intl. to O'Hare Intl., returning Sun, Jun 7, priced at $238 found 12 hours ago
Thu, Jun 4 - Tue, Jun 9
MKE
General Mitchell Intl.
ORD
O'Hare Intl.
$240 Roundtrip, found 5 days ago
$240
Roundtrip
found 5 days ago
Select United flight, departing Thu, Jun 4 from General Mitchell Intl. to O'Hare Intl., returning Tue, Jun 9, priced at $240 found 5 days ago
Tue, Sep 29 - Thu, Oct 1
MKE
General Mitchell Intl.
ORD
O'Hare Intl.
$242 Roundtrip, found 16 hours ago
$242
Roundtrip
found 16 hours ago
Select United flight, departing Tue, Sep 29 from General Mitchell Intl. to O'Hare Intl., returning Thu, Oct 1, priced at $242 found 16 hours ago
Wed, Jun 3 - Sun, Jun 7
MKE
General Mitchell Intl.
ORD
O'Hare Intl.
$243 Roundtrip, found 12 hours ago
$243
Roundtrip
found 12 hours ago
Select United flight, departing Wed, Jun 3 from General Mitchell Intl. to O'Hare Intl., returning Sun, Jun 7, priced at $243 found 12 hours ago
Fri, Jul 31 - Fri, Aug 14
MKE
General Mitchell Intl.
ORD
O'Hare Intl.
$248 Roundtrip, found 22 hours ago
$248
Roundtrip
found 22 hours ago
Select United flight, departing Fri, Jul 31 from General Mitchell Intl. to O'Hare Intl., returning Fri, Aug 14, priced at $248 found 22 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.