United Flight AA4440 Deals & Information (2025/2026)

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United Flight 4440 Route Deals From $107

The cheapest prices found with in the last 7 days for return flights were $213 and $107 for one-way flights to Buffalo Niagara Intl. for the period specified. Prices and availability are subject to change. Additional terms apply.

Wed, Aug 6 - Tue, Aug 12
ORD
O'Hare Intl.
BUF
Buffalo Niagara Intl.
$213 Roundtrip, found 2 hours ago
$213
Roundtrip
found 2 hours ago
Select United flight, departing Wed, Aug 6 from O'Hare Intl. to Buffalo Niagara Intl., returning Tue, Aug 12, priced at $213 found 2 hours ago
Wed, Aug 6 - Tue, Aug 12
ORD
O'Hare Intl.
BUF
Buffalo Niagara Intl.
$213 Roundtrip, found 2 hours ago
$213
Roundtrip
found 2 hours ago
Select United flight, departing Wed, Aug 6 from O'Hare Intl. to Buffalo Niagara Intl., returning Tue, Aug 12, priced at $213 found 2 hours ago
Tue, Sep 23 - Sun, Sep 28
ORD
O'Hare Intl.
BUF
Buffalo Niagara Intl.
$215 Roundtrip, found 1 day ago
$215
Roundtrip
found 1 day ago
Select United flight, departing Tue, Sep 23 from O'Hare Intl. to Buffalo Niagara Intl., returning Sun, Sep 28, priced at $215 found 1 day ago
Tue, Aug 5 - Mon, Aug 11
ORD
O'Hare Intl.
BUF
Buffalo Niagara Intl.
$217 Roundtrip, found 2 hours ago
$217
Roundtrip
found 2 hours ago
Select United flight, departing Tue, Aug 5 from O'Hare Intl. to Buffalo Niagara Intl., returning Mon, Aug 11, priced at $217 found 2 hours ago
Wed, Jul 16 - Sun, Jul 20
ORD
O'Hare Intl.
BUF
Buffalo Niagara Intl.
$227 Roundtrip, found 4 hours ago
$227
Roundtrip
found 4 hours ago
Select United flight, departing Wed, Jul 16 from O'Hare Intl. to Buffalo Niagara Intl., returning Sun, Jul 20, priced at $227 found 4 hours ago
Wed, Jul 30 - Mon, Aug 4
ORD
O'Hare Intl.
BUF
Buffalo Niagara Intl.
$235 Roundtrip, found 3 days ago
$235
Roundtrip
found 3 days ago
Select United flight, departing Wed, Jul 30 from O'Hare Intl. to Buffalo Niagara Intl., returning Mon, Aug 4, priced at $235 found 3 days ago
Wed, Jul 16 - Sun, Jul 20
ORD
O'Hare Intl.
BUF
Buffalo Niagara Intl.
$239 Roundtrip, found 4 hours ago
$239
Roundtrip
found 4 hours ago
Select United flight, departing Wed, Jul 16 from O'Hare Intl. to Buffalo Niagara Intl., returning Sun, Jul 20, priced at $239 found 4 hours ago
Fri, Sep 12 - Tue, Sep 16
ORD
O'Hare Intl.
BUF
Buffalo Niagara Intl.
$240 Roundtrip, found 6 days ago
$240
Roundtrip
found 6 days ago
Select United flight, departing Fri, Sep 12 from O'Hare Intl. to Buffalo Niagara Intl., returning Tue, Sep 16, priced at $240 found 6 days ago
Fri, Aug 1 - Mon, Aug 4
ORD
O'Hare Intl.
BUF
Buffalo Niagara Intl.
$242 Roundtrip, found 2 days ago
$242
Roundtrip
found 2 days ago
Select United flight, departing Fri, Aug 1 from O'Hare Intl. to Buffalo Niagara Intl., returning Mon, Aug 4, priced at $242 found 2 days ago
Tue, Aug 5 - Mon, Aug 11
ORD
O'Hare Intl.
BUF
Buffalo Niagara Intl.
$251 Roundtrip, found 2 hours ago
$251
Roundtrip
found 2 hours ago
Select United flight, departing Tue, Aug 5 from O'Hare Intl. to Buffalo Niagara Intl., returning Mon, Aug 11, priced at $251 found 2 hours ago

Frequently asked questions

What route does flight number UA4440 take?
UA4440 flies straight between PIT and Liberty Intl. Airport (EWR) in 1 hour and 25 minutes. It can be used on other routes though, some of which could be multi-stop flights. Keep this in mind when booking your airfare to avoid any confusion.
What kind of plane is on flight number UA4440?
It's highly likely you'll travel aboard a Canadair (Bombardier) Regional Jet 550 if you've booked a seat on flight UA4440 from Pittsburgh Intl. Airport (PIT) to EWR. It's the most commonly used type of plane 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 UA4440 flight with Travelocity, please visit our Customer Service Portal.