United Flight 4579 Deals & Information (2026/2027)

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United Flight 4579 Route Deals From $238

The cheapest prices found with in the last 7 days for return flights were $184 and $238 for one-way flights to Appleton Intl. for the period specified. Prices and availability are subject to change. Additional terms apply.

Fri, May 15 - Sun, May 17
ORD
O'Hare Intl.
ATW
Appleton Intl.
$184 Roundtrip, found 5 days ago
$184
Roundtrip
found 5 days ago
Select United flight, departing Fri, May 15 from O'Hare Intl. to Appleton Intl., returning Sun, May 17, priced at $184 found 5 days ago
Sat, Mar 21 - Sun, Mar 22
ORD
O'Hare Intl.
ATW
Appleton Intl.
$188 Roundtrip, found 15 hours ago
$188
Roundtrip
found 15 hours ago
Select United flight, departing Sat, Mar 21 from O'Hare Intl. to Appleton Intl., returning Sun, Mar 22, priced at $188 found 15 hours ago
Thu, Apr 2 - Sat, Apr 11
ORD
O'Hare Intl.
ATW
Appleton Intl.
$189 Roundtrip, found 4 days ago
$189
Roundtrip
found 4 days ago
Select United flight, departing Thu, Apr 2 from O'Hare Intl. to Appleton Intl., returning Sat, Apr 11, priced at $189 found 4 days ago
Thu, Apr 2 - Sat, Apr 11
ORD
O'Hare Intl.
ATW
Appleton Intl.
$191 Roundtrip, found 4 days ago
$191
Roundtrip
found 4 days ago
Select United flight, departing Thu, Apr 2 from O'Hare Intl. to Appleton Intl., returning Sat, Apr 11, priced at $191 found 4 days ago
Fri, May 15 - Sun, May 17
ORD
O'Hare Intl.
ATW
Appleton Intl.
$192 Roundtrip, found 5 days ago
$192
Roundtrip
found 5 days ago
Select United flight, departing Fri, May 15 from O'Hare Intl. to Appleton Intl., returning Sun, May 17, priced at $192 found 5 days ago
Fri, May 15 - Sun, May 17
ORD
O'Hare Intl.
ATW
Appleton Intl.
$197 Roundtrip, found 5 days ago
$197
Roundtrip
found 5 days ago
Select United flight, departing Fri, May 15 from O'Hare Intl. to Appleton Intl., returning Sun, May 17, priced at $197 found 5 days ago
Thu, Apr 2 - Sat, Apr 11
ORD
O'Hare Intl.
ATW
Appleton Intl.
$213 Roundtrip, found 4 days ago
$213
Roundtrip
found 4 days ago
Select United flight, departing Thu, Apr 2 from O'Hare Intl. to Appleton Intl., returning Sat, Apr 11, priced at $213 found 4 days ago
Fri, May 15 - Sun, May 17
ORD
O'Hare Intl.
ATW
Appleton Intl.
$219 Roundtrip, found 5 days ago
$219
Roundtrip
found 5 days ago
Select United flight, departing Fri, May 15 from O'Hare Intl. to Appleton Intl., returning Sun, May 17, priced at $219 found 5 days ago
Thu, Apr 2 - Sat, Apr 11
ORD
O'Hare Intl.
ATW
Appleton Intl.
$221 Roundtrip, found 4 days ago
$221
Roundtrip
found 4 days ago
Select United flight, departing Thu, Apr 2 from O'Hare Intl. to Appleton Intl., returning Sat, Apr 11, priced at $221 found 4 days ago
Sat, Mar 21 - Sun, Mar 22
ORD
O'Hare Intl.
ATW
Appleton Intl.
$222 Roundtrip, found 15 hours ago
$222
Roundtrip
found 15 hours ago
Select United flight, departing Sat, Mar 21 from O'Hare Intl. to Appleton Intl., returning Sun, Mar 22, priced at $222 found 15 hours ago

Frequently asked questions

What route does flight number UA4579 take?
UA4579 is used on multiple routes, but the most common is between EWR and Lambert Field. If you manage to score a direct flight, you'll stroll through arrivals in roughly 2 hours and 42 minutes. Multi-stop flights can also use this number, as can flights on other routes.
What terminal does UA4579 fly out of?
If you're jetting off from EWR, there's a good chance you'll board the aircraft from Terminal C. The most traveled route for flight number UA4579 is Newark, NJ Airport (EWR-Liberty Intl.) to St. Louis, MO Airport (STL-Lambert-St. Louis Intl.), which is a direct flight.
What kind of plane is on flight number UA4579?
You'll probably be boarding the Canadair (Bombardier) Regional Jet 550 if you're on flight UA4579 from Liberty Intl. Airport (EWR) to St. Louis, MO Airport (STL-Lambert-St. Louis Intl.). It's the most commonly used aircraft 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 UA4579 flight with Travelocity, please visit our Customer Service Portal.