United Flight 3666 Deals & Information (2026/2027)

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United Flight 3666 Route Deals From $76

The cheapest prices found with in the last 7 days for return flights were $149 and $76 for one-way flights to Newark Liberty Intl. Airport for the period specified. Prices and availability are subject to change. Additional terms apply.

Tue, Aug 11 - Wed, Aug 19
PIT
Pittsburgh Intl.
EWR
Newark Liberty Intl. Airport
$149 Roundtrip, found 1 day ago
$149
Roundtrip
found 1 day ago
Select United flight, departing Tue, Aug 11 from Pittsburgh Intl. to Newark Liberty Intl. Airport, returning Wed, Aug 19, priced at $149 found 1 day ago
Wed, Jul 1 - Tue, Jul 7
PIT
Pittsburgh Intl.
EWR
Newark Liberty Intl. Airport
$153 Roundtrip, found 15 hours ago
$153
Roundtrip
found 15 hours ago
Select United flight, departing Wed, Jul 1 from Pittsburgh Intl. to Newark Liberty Intl. Airport, returning Tue, Jul 7, priced at $153 found 15 hours ago
Tue, Aug 11 - Wed, Aug 19
PIT
Pittsburgh Intl.
EWR
Newark Liberty Intl. Airport
$159 Roundtrip, found 1 day ago
$159
Roundtrip
found 1 day ago
Select United flight, departing Tue, Aug 11 from Pittsburgh Intl. to Newark Liberty Intl. Airport, returning Wed, Aug 19, priced at $159 found 1 day ago
Wed, Jul 22 - Fri, Jul 24
PIT
Pittsburgh Intl.
EWR
Newark Liberty Intl. Airport
$161 Roundtrip, found 2 days ago
$161
Roundtrip
found 2 days ago
Select United flight, departing Wed, Jul 22 from Pittsburgh Intl. to Newark Liberty Intl. Airport, returning Fri, Jul 24, priced at $161 found 2 days ago
Wed, Jul 1 - Tue, Jul 7
PIT
Pittsburgh Intl.
EWR
Newark Liberty Intl. Airport
$163 Roundtrip, found 15 hours ago
$163
Roundtrip
found 15 hours ago
Select United flight, departing Wed, Jul 1 from Pittsburgh Intl. to Newark Liberty Intl. Airport, returning Tue, Jul 7, priced at $163 found 15 hours ago
Tue, Aug 11 - Wed, Aug 19
PIT
Pittsburgh Intl.
EWR
Newark Liberty Intl. Airport
$171 Roundtrip, found 1 day ago
$171
Roundtrip
found 1 day ago
Select United flight, departing Tue, Aug 11 from Pittsburgh Intl. to Newark Liberty Intl. Airport, returning Wed, Aug 19, priced at $171 found 1 day ago
Wed, Jul 1 - Tue, Jul 7
PIT
Pittsburgh Intl.
EWR
Newark Liberty Intl. Airport
$173 Roundtrip, found 15 hours ago
$173
Roundtrip
found 15 hours ago
Select United flight, departing Wed, Jul 1 from Pittsburgh Intl. to Newark Liberty Intl. Airport, returning Tue, Jul 7, priced at $173 found 15 hours ago
Tue, Aug 11 - Wed, Aug 19
PIT
Pittsburgh Intl.
EWR
Newark Liberty Intl. Airport
$178 Roundtrip, found 1 day ago
$178
Roundtrip
found 1 day ago
Select United flight, departing Tue, Aug 11 from Pittsburgh Intl. to Newark Liberty Intl. Airport, returning Wed, Aug 19, priced at $178 found 1 day ago
Tue, Aug 11 - Wed, Aug 19
PIT
Pittsburgh Intl.
EWR
Newark Liberty Intl. Airport
$181 Roundtrip, found 1 day ago
$181
Roundtrip
found 1 day ago
Select United flight, departing Tue, Aug 11 from Pittsburgh Intl. to Newark Liberty Intl. Airport, returning Wed, Aug 19, priced at $181 found 1 day ago
Wed, Aug 5 - Sat, Aug 8
PIT
Pittsburgh Intl.
EWR
Newark Liberty Intl. Airport
$181 Roundtrip, found 5 days ago
$181
Roundtrip
found 5 days ago
Select United flight, departing Wed, Aug 5 from Pittsburgh Intl. to Newark Liberty Intl. Airport, returning Sat, Aug 8, priced at $181 found 5 days ago