United Flight 3666 Deals & Information (2026/2027)

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United Flight 3666 Route Deals From $75

The cheapest prices found with in the last 7 days for return flights were $149 and $75 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 14 hours ago
$149
Roundtrip
found 14 hours ago
Select United flight, departing Tue, Aug 11 from Pittsburgh Intl. to Newark Liberty Intl. Airport, returning Wed, Aug 19, priced at $149 found 14 hours ago
Tue, Aug 11 - Wed, Aug 19
PIT
Pittsburgh Intl.
EWR
Newark Liberty Intl. Airport
$159 Roundtrip, found 14 hours ago
$159
Roundtrip
found 14 hours ago
Select United flight, departing Tue, Aug 11 from Pittsburgh Intl. to Newark Liberty Intl. Airport, returning Wed, Aug 19, priced at $159 found 14 hours ago
Wed, Jul 22 - Fri, Jul 24
PIT
Pittsburgh Intl.
EWR
Newark Liberty Intl. Airport
$161 Roundtrip, found 1 day ago
$161
Roundtrip
found 1 day ago
Select United flight, departing Wed, Jul 22 from Pittsburgh Intl. to Newark Liberty Intl. Airport, returning Fri, Jul 24, priced at $161 found 1 day ago
Tue, Aug 11 - Wed, Aug 19
PIT
Pittsburgh Intl.
EWR
Newark Liberty Intl. Airport
$171 Roundtrip, found 14 hours ago
$171
Roundtrip
found 14 hours ago
Select United flight, departing Tue, Aug 11 from Pittsburgh Intl. to Newark Liberty Intl. Airport, returning Wed, Aug 19, priced at $171 found 14 hours ago
Tue, Aug 11 - Wed, Aug 19
PIT
Pittsburgh Intl.
EWR
Newark Liberty Intl. Airport
$178 Roundtrip, found 14 hours ago
$178
Roundtrip
found 14 hours ago
Select United flight, departing Tue, Aug 11 from Pittsburgh Intl. to Newark Liberty Intl. Airport, returning Wed, Aug 19, priced at $178 found 14 hours ago
Tue, Aug 11 - Wed, Aug 19
PIT
Pittsburgh Intl.
EWR
Newark Liberty Intl. Airport
$181 Roundtrip, found 14 hours ago
$181
Roundtrip
found 14 hours ago
Select United flight, departing Tue, Aug 11 from Pittsburgh Intl. to Newark Liberty Intl. Airport, returning Wed, Aug 19, priced at $181 found 14 hours ago
Wed, Aug 5 - Sat, Aug 8
PIT
Pittsburgh Intl.
EWR
Newark Liberty Intl. Airport
$181 Roundtrip, found 4 days ago
$181
Roundtrip
found 4 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 4 days ago
Tue, Aug 11 - Wed, Aug 19
PIT
Pittsburgh Intl.
EWR
Newark Liberty Intl. Airport
$183 Roundtrip, found 14 hours ago
$183
Roundtrip
found 14 hours ago
Select United flight, departing Tue, Aug 11 from Pittsburgh Intl. to Newark Liberty Intl. Airport, returning Wed, Aug 19, priced at $183 found 14 hours ago
Sat, Jul 25 - Tue, Jul 28
PIT
Pittsburgh Intl.
EWR
Newark Liberty Intl. Airport
$185 Roundtrip, found 4 days ago
$185
Roundtrip
found 4 days ago
Select United flight, departing Sat, Jul 25 from Pittsburgh Intl. to Newark Liberty Intl. Airport, returning Tue, Jul 28, priced at $185 found 4 days ago
Tue, Aug 11 - Wed, Aug 19
PIT
Pittsburgh Intl.
EWR
Newark Liberty Intl. Airport
$188 Roundtrip, found 14 hours ago
$188
Roundtrip
found 14 hours ago
Select United flight, departing Tue, Aug 11 from Pittsburgh Intl. to Newark Liberty Intl. Airport, returning Wed, Aug 19, priced at $188 found 14 hours ago