United Flight 4456 Deals & Information (2026/2027)

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United Flight 4456 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 4 days ago
$184
Roundtrip
found 4 days ago
Select United flight, departing Fri, May 15 from O'Hare Intl. to Appleton Intl., returning Sun, May 17, priced at $184 found 4 days ago
Thu, Apr 2 - Sat, Apr 11
ORD
O'Hare Intl.
ATW
Appleton Intl.
$189 Roundtrip, found 2 days ago
$189
Roundtrip
found 2 days ago
Select United flight, departing Thu, Apr 2 from O'Hare Intl. to Appleton Intl., returning Sat, Apr 11, priced at $189 found 2 days ago
Thu, Apr 2 - Sat, Apr 11
ORD
O'Hare Intl.
ATW
Appleton Intl.
$191 Roundtrip, found 2 days ago
$191
Roundtrip
found 2 days ago
Select United flight, departing Thu, Apr 2 from O'Hare Intl. to Appleton Intl., returning Sat, Apr 11, priced at $191 found 2 days ago
Fri, May 15 - Sun, May 17
ORD
O'Hare Intl.
ATW
Appleton Intl.
$192 Roundtrip, found 4 days ago
$192
Roundtrip
found 4 days ago
Select United flight, departing Fri, May 15 from O'Hare Intl. to Appleton Intl., returning Sun, May 17, priced at $192 found 4 days ago
Fri, May 15 - Sun, May 17
ORD
O'Hare Intl.
ATW
Appleton Intl.
$197 Roundtrip, found 4 days ago
$197
Roundtrip
found 4 days ago
Select United flight, departing Fri, May 15 from O'Hare Intl. to Appleton Intl., returning Sun, May 17, priced at $197 found 4 days ago
Thu, Apr 2 - Sat, Apr 11
ORD
O'Hare Intl.
ATW
Appleton Intl.
$213 Roundtrip, found 2 days ago
$213
Roundtrip
found 2 days ago
Select United flight, departing Thu, Apr 2 from O'Hare Intl. to Appleton Intl., returning Sat, Apr 11, priced at $213 found 2 days ago
Fri, May 15 - Sun, May 17
ORD
O'Hare Intl.
ATW
Appleton Intl.
$219 Roundtrip, found 4 days ago
$219
Roundtrip
found 4 days ago
Select United flight, departing Fri, May 15 from O'Hare Intl. to Appleton Intl., returning Sun, May 17, priced at $219 found 4 days ago
Thu, Apr 2 - Sat, Apr 11
ORD
O'Hare Intl.
ATW
Appleton Intl.
$221 Roundtrip, found 2 days ago
$221
Roundtrip
found 2 days ago
Select United flight, departing Thu, Apr 2 from O'Hare Intl. to Appleton Intl., returning Sat, Apr 11, priced at $221 found 2 days ago
Thu, Apr 2 - Sat, Apr 11
ORD
O'Hare Intl.
ATW
Appleton Intl.
$224 Roundtrip, found 2 days ago
$224
Roundtrip
found 2 days ago
Select United flight, departing Thu, Apr 2 from O'Hare Intl. to Appleton Intl., returning Sat, Apr 11, priced at $224 found 2 days ago
Fri, May 15 - Sun, May 17
ORD
O'Hare Intl.
ATW
Appleton Intl.
$226 Roundtrip, found 4 days ago
$226
Roundtrip
found 4 days ago
Select United flight, departing Fri, May 15 from O'Hare Intl. to Appleton Intl., returning Sun, May 17, priced at $226 found 4 days ago
Fri, May 15 - Sun, May 17
ORD
O'Hare Intl.
ATW
Appleton Intl.
$231 Roundtrip, found 4 days ago
$231
Roundtrip
found 4 days ago
Select United flight, departing Fri, May 15 from O'Hare Intl. to Appleton Intl., returning Sun, May 17, priced at $231 found 4 days ago
Tue, Feb 3 - Tue, Feb 10
ORD
O'Hare Intl.
ATW
Appleton Intl.
$233 Roundtrip, found 2 days ago
$233
Roundtrip
found 2 days ago
Select United flight, departing Tue, Feb 3 from O'Hare Intl. to Appleton Intl., returning Tue, Feb 10, priced at $233 found 2 days ago
Fri, May 15 - Sun, May 17
ORD
O'Hare Intl.
ATW
Appleton Intl.
$235 Roundtrip, found 4 days ago
$235
Roundtrip
found 4 days ago
Select United flight, departing Fri, May 15 from O'Hare Intl. to Appleton Intl., returning Sun, May 17, priced at $235 found 4 days ago

Frequently asked questions

What route does flight number UA4456 take?
UA4456 takes a number of routes. The most frequently flown is O'Hare Intl. Airport (ORD) to BUF, which flies direct. This flight generally takes 1 hour and 39 minutes. However, there may possibly be other flights with the same number that are multi-stop.
What terminal does UA4456 fly out of?
Terminal 1 is where you'll most likely board from if you're booked on a flight leaving from O'Hare Intl. Airport (ORD). Chicago, IL Airport (ORD-O'Hare Intl.) to Buffalo Niagara International Airport is the most frequently traveled route for flight number UA4456.
What kind of plane is on flight number UA4456?
Chances are you'll be boarding a Canadair (Bombardier) Regional Jet 550 if you're on flight UA4456 from O'Hare Airport to BUF. It's the most commonly used type of plane on this particular 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 UA4456 flight with Travelocity, please visit our Customer Service Portal.