United Flight 4558 Deals & Information (2025/2026)

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United Flight 4558 Route Deals From $134

The cheapest prices found with in the last 7 days for return flights were $223 and $134 for one-way flights to Northwest Arkansas Regional for the period specified. Prices and availability are subject to change. Additional terms apply.

Sat, Aug 30 - Tue, Sep 30
ORD
O'Hare Intl.
XNA
Northwest Arkansas Regional
$223 Roundtrip, found 3 days ago
$223
Roundtrip
found 3 days ago
Select United flight, departing Sat, Aug 30 from O'Hare Intl. to Northwest Arkansas Regional, returning Tue, Sep 30, priced at $223 found 3 days ago
Fri, Aug 29 - Mon, Sep 1
ORD
O'Hare Intl.
XNA
Northwest Arkansas Regional
$234 Roundtrip, found 6 days ago
$234
Roundtrip
found 6 days ago
Select United flight, departing Fri, Aug 29 from O'Hare Intl. to Northwest Arkansas Regional, returning Mon, Sep 1, priced at $234 found 6 days ago
Sat, Sep 27 - Tue, Sep 30
ORD
O'Hare Intl.
XNA
Northwest Arkansas Regional
$235 Roundtrip, found 3 days ago
$235
Roundtrip
found 3 days ago
Select United flight, departing Sat, Sep 27 from O'Hare Intl. to Northwest Arkansas Regional, returning Tue, Sep 30, priced at $235 found 3 days ago
Fri, Oct 10 - Mon, Oct 13
ORD
O'Hare Intl.
XNA
Northwest Arkansas Regional
$246 Roundtrip, found 5 days ago
$246
Roundtrip
found 5 days ago
Select United flight, departing Fri, Oct 10 from O'Hare Intl. to Northwest Arkansas Regional, returning Mon, Oct 13, priced at $246 found 5 days ago
Sat, Aug 30 - Tue, Sep 30
ORD
O'Hare Intl.
XNA
Northwest Arkansas Regional
$246 Roundtrip, found 3 days ago
$246
Roundtrip
found 3 days ago
Select United flight, departing Sat, Aug 30 from O'Hare Intl. to Northwest Arkansas Regional, returning Tue, Sep 30, priced at $246 found 3 days ago
Sat, Aug 30 - Tue, Sep 30
ORD
O'Hare Intl.
XNA
Northwest Arkansas Regional
$249 Roundtrip, found 3 days ago
$249
Roundtrip
found 3 days ago
Select United flight, departing Sat, Aug 30 from O'Hare Intl. to Northwest Arkansas Regional, returning Tue, Sep 30, priced at $249 found 3 days ago
Sat, Sep 27 - Tue, Sep 30
ORD
O'Hare Intl.
XNA
Northwest Arkansas Regional
$257 Roundtrip, found 3 days ago
$257
Roundtrip
found 3 days ago
Select United flight, departing Sat, Sep 27 from O'Hare Intl. to Northwest Arkansas Regional, returning Tue, Sep 30, priced at $257 found 3 days ago
Wed, Aug 27 - Wed, Sep 3
ORD
O'Hare Intl.
XNA
Northwest Arkansas Regional
$264 Roundtrip, found 1 day ago
$264
Roundtrip
found 1 day ago
Select United flight, departing Wed, Aug 27 from O'Hare Intl. to Northwest Arkansas Regional, returning Wed, Sep 3, priced at $264 found 1 day ago

Frequently asked questions

What route does flight number UA4558 take?
UA4558 operates direct from ORD to Nantucket Memorial Airport (ACK). During this journey, expect to be in the air for about 2 hours and 30 minutes. Book ahead to secure your favorite seat.
What terminal does UA4558 fly out of?
You'll likely be hopping on the plane at Terminal 1 if you're booked on flight UA4558 direct from Chicago, IL Airport (ORD-O'Hare Intl.) to Nantucket Memorial Airport.
What kind of plane is on flight number UA4558?
Get set to jump on board a Canadair (Bombardier) Regional Jet 550 if you're traveling on flight UA4558. Almost all flights from ORD to Nantucket Memorial Airport use this model of aircraft.
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 UA4558 flight with Travelocity, please visit our Customer Service Portal.