United Flight 4577 Deals & Information (2026/2027)

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United Flight 4577 Route Deals From $274

The cheapest prices found with in the last 7 days for return flights were $319 and $274 for one-way flights to O'Hare Intl. for the period specified. Prices and availability are subject to change. Additional terms apply.

Fri, Feb 12 - Mon, Feb 15
MDT
Harrisburg Intl.
ORD
O'Hare Intl.
$319 Roundtrip, found 1 hour ago
$319
Roundtrip
found 1 hour ago
Select United flight, departing Fri, Feb 12 from Harrisburg Intl. to O'Hare Intl., returning Mon, Feb 15, priced at $319 found 1 hour ago
Wed, Nov 4 - Tue, Nov 10
MDT
Harrisburg Intl.
ORD
O'Hare Intl.
$327 Roundtrip, found 6 days ago
$327
Roundtrip
found 6 days ago
Select United flight, departing Wed, Nov 4 from Harrisburg Intl. to O'Hare Intl., returning Tue, Nov 10, priced at $327 found 6 days ago
Wed, Nov 4 - Tue, Nov 10
MDT
Harrisburg Intl.
ORD
O'Hare Intl.
$337 Roundtrip, found 6 days ago
$337
Roundtrip
found 6 days ago
Select United flight, departing Wed, Nov 4 from Harrisburg Intl. to O'Hare Intl., returning Tue, Nov 10, priced at $337 found 6 days ago
Fri, Feb 12 - Mon, Feb 15
MDT
Harrisburg Intl.
ORD
O'Hare Intl.
$339 Roundtrip, found 1 hour ago
$339
Roundtrip
found 1 hour ago
Select United flight, departing Fri, Feb 12 from Harrisburg Intl. to O'Hare Intl., returning Mon, Feb 15, priced at $339 found 1 hour ago
Tue, Nov 24 - Sat, Nov 28
MDT
Harrisburg Intl.
ORD
O'Hare Intl.
$342 Roundtrip, found 2 days ago
$342
Roundtrip
found 2 days ago
Select United flight, departing Tue, Nov 24 from Harrisburg Intl. to O'Hare Intl., returning Sat, Nov 28, priced at $342 found 2 days ago
Sat, Jan 23 - Wed, Jan 27
MDT
Harrisburg Intl.
ORD
O'Hare Intl.
$343 Roundtrip, found 1 day ago
$343
Roundtrip
found 1 day ago
Select United flight, departing Sat, Jan 23 from Harrisburg Intl. to O'Hare Intl., returning Wed, Jan 27, priced at $343 found 1 day ago
Fri, Oct 2 - Sun, Oct 4
MDT
Harrisburg Intl.
ORD
O'Hare Intl.
$344 Roundtrip, found 2 days ago
$344
Roundtrip
found 2 days ago
Select United flight, departing Fri, Oct 2 from Harrisburg Intl. to O'Hare Intl., returning Sun, Oct 4, priced at $344 found 2 days ago
Thu, Dec 10 - Tue, Dec 15
MDT
Harrisburg Intl.
ORD
O'Hare Intl.
$346 Roundtrip, found 6 days ago
$346
Roundtrip
found 6 days ago
Select United flight, departing Thu, Dec 10 from Harrisburg Intl. to O'Hare Intl., returning Tue, Dec 15, priced at $346 found 6 days ago
Mon, Nov 23 - Fri, Nov 27
MDT
Harrisburg Intl.
ORD
O'Hare Intl.
$348 Roundtrip, found 3 days ago
$348
Roundtrip
found 3 days ago
Select United flight, departing Mon, Nov 23 from Harrisburg Intl. to O'Hare Intl., returning Fri, Nov 27, priced at $348 found 3 days ago
Fri, Feb 12 - Mon, Feb 15
MDT
Harrisburg Intl.
ORD
O'Hare Intl.
$349 Roundtrip, found 1 hour ago
$349
Roundtrip
found 1 hour ago
Select United flight, departing Fri, Feb 12 from Harrisburg Intl. to O'Hare Intl., returning Mon, Feb 15, priced at $349 found 1 hour ago