United Flight 4576 Deals & Information (2026/2027)

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United Flight 4576 Route Deals From $294

The cheapest prices found with in the last 7 days for return flights were $349 and $294 for one-way flights to O'Hare Intl. for the period specified. Prices and availability are subject to change. Additional terms apply.

Sat, Jan 16 - Tue, Jan 19
GSO
Piedmont Triad Intl.
ORD
O'Hare Intl.
$349 Roundtrip, found 6 days ago
$349
Roundtrip
found 6 days ago
Select United flight, departing Sat, Jan 16 from Piedmont Triad Intl. to O'Hare Intl., returning Tue, Jan 19, priced at $349 found 6 days ago
Mon, Jul 12 - Mon, Jul 19
GSO
Piedmont Triad Intl.
ORD
O'Hare Intl.
$358 Roundtrip, found 17 hours ago
$358
Roundtrip
found 17 hours ago
Select United flight, departing Mon, Jul 12 from Piedmont Triad Intl. to O'Hare Intl., returning Mon, Jul 19, priced at $358 found 17 hours ago
Sat, Jan 16 - Tue, Jan 19
GSO
Piedmont Triad Intl.
ORD
O'Hare Intl.
$359 Roundtrip, found 6 days ago
$359
Roundtrip
found 6 days ago
Select United flight, departing Sat, Jan 16 from Piedmont Triad Intl. to O'Hare Intl., returning Tue, Jan 19, priced at $359 found 6 days ago
Sat, Dec 12 - Tue, Jan 5
GSO
Piedmont Triad Intl.
ORD
O'Hare Intl.
$361 Roundtrip, found 3 days ago
$361
Roundtrip
found 3 days ago
Select United flight, departing Sat, Dec 12 from Piedmont Triad Intl. to O'Hare Intl., returning Tue, Jan 5, priced at $361 found 3 days ago
Sat, Dec 12 - Tue, Jan 5
GSO
Piedmont Triad Intl.
ORD
O'Hare Intl.
$367 Roundtrip, found 3 days ago
$367
Roundtrip
found 3 days ago
Select United flight, departing Sat, Dec 12 from Piedmont Triad Intl. to O'Hare Intl., returning Tue, Jan 5, priced at $367 found 3 days ago
Sat, Dec 12 - Tue, Jan 5
GSO
Piedmont Triad Intl.
ORD
O'Hare Intl.
$370 Roundtrip, found 3 days ago
$370
Roundtrip
found 3 days ago
Select United flight, departing Sat, Dec 12 from Piedmont Triad Intl. to O'Hare Intl., returning Tue, Jan 5, priced at $370 found 3 days ago
Mon, Nov 30 - Sat, Dec 5
GSO
Piedmont Triad Intl.
ORD
O'Hare Intl.
$376 Roundtrip, found 4 days ago
$376
Roundtrip
found 4 days ago
Select United flight, departing Mon, Nov 30 from Piedmont Triad Intl. to O'Hare Intl., returning Sat, Dec 5, priced at $376 found 4 days ago
Sat, Dec 12 - Tue, Jan 5
GSO
Piedmont Triad Intl.
ORD
O'Hare Intl.
$377 Roundtrip, found 3 days ago
$377
Roundtrip
found 3 days ago
Select United flight, departing Sat, Dec 12 from Piedmont Triad Intl. to O'Hare Intl., returning Tue, Jan 5, priced at $377 found 3 days ago
Sat, Dec 12 - Tue, Jan 5
GSO
Piedmont Triad Intl.
ORD
O'Hare Intl.
$382 Roundtrip, found 3 days ago
$382
Roundtrip
found 3 days ago
Select United flight, departing Sat, Dec 12 from Piedmont Triad Intl. to O'Hare Intl., returning Tue, Jan 5, priced at $382 found 3 days ago
Thu, Dec 17 - Mon, Dec 21
GSO
Piedmont Triad Intl.
ORD
O'Hare Intl.
$384 Roundtrip, found 4 hours ago
$384
Roundtrip
found 4 hours ago
Select United flight, departing Thu, Dec 17 from Piedmont Triad Intl. to O'Hare Intl., returning Mon, Dec 21, priced at $384 found 4 hours ago
Fri, Jan 22 - Tue, Jan 26
GSO
Piedmont Triad Intl.
ORD
O'Hare Intl.
$390 Roundtrip, found 5 days ago
$390
Roundtrip
found 5 days ago
Select United flight, departing Fri, Jan 22 from Piedmont Triad Intl. to O'Hare Intl., returning Tue, Jan 26, priced at $390 found 5 days ago
Sat, Dec 12 - Tue, Jan 5
GSO
Piedmont Triad Intl.
ORD
O'Hare Intl.
$392 Roundtrip, found 3 days ago
$392
Roundtrip
found 3 days ago
Select United flight, departing Sat, Dec 12 from Piedmont Triad Intl. to O'Hare Intl., returning Tue, Jan 5, priced at $392 found 3 days ago
Thu, Dec 17 - Mon, Dec 21
GSO
Piedmont Triad Intl.
ORD
O'Hare Intl.
$394 Roundtrip, found 4 hours ago
$394
Roundtrip
found 4 hours ago
Select United flight, departing Thu, Dec 17 from Piedmont Triad Intl. to O'Hare Intl., returning Mon, Dec 21, priced at $394 found 4 hours ago
Fri, Jan 15 - Mon, Jan 18
GSO
Piedmont Triad Intl.
ORD
O'Hare Intl.
$395 Roundtrip, found 3 days ago
$395
Roundtrip
found 3 days ago
Select United flight, departing Fri, Jan 15 from Piedmont Triad Intl. to O'Hare Intl., returning Mon, Jan 18, priced at $395 found 3 days ago
Tue, Dec 22 - Sat, Dec 26
GSO
Piedmont Triad Intl.
ORD
O'Hare Intl.
$397 Roundtrip, found 23 hours ago
$397
Roundtrip
found 23 hours ago
Select United flight, departing Tue, Dec 22 from Piedmont Triad Intl. to O'Hare Intl., returning Sat, Dec 26, priced at $397 found 23 hours ago

Frequently asked questions

What route does flight number UA4576 take?
Flight number UA4576 operates non-stop from ACK to Newark, NJ Airport (EWR-Liberty Intl.). During this trip, you'll be in the air for approximately 1 hour and 40 minutes. Consider booking ahead to lock in your favorite seat.
What kind of plane is on flight number UA4576?
There's every chance you'll be cruising aboard the Canadair (Bombardier) Regional Jet 550 if you have a seat on flight UA4576. Typically, this flight leaves from Nantucket, MA Airport (ACK-Nantucket Memorial) and comes in to land at EWR.
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 UA4576 flight with Travelocity, please visit our Customer Service Portal.