$464 Cheap United flights Boston (BOS) to Porto (OPO)

$464 Cheap United flights Boston (BOS) to Porto (OPO)

Prices were available within the past 7 days and start at $464 for one-way flights and $640 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Wed, Jul 23 - Sat, Sep 20

BOS

Boston

OPO

Porto

$640 Roundtrip, found 5 days ago

$640

Roundtrip

found 5 days ago

Select United flight, departing Wed, Jul 23 from Boston to Porto, returning Sat, Sep 20, priced at $640 found 5 days ago

Fri, Jul 18 - Fri, Sep 19

BOS

Boston

OPO

Porto

$645 Roundtrip, found 5 days ago

$645

Roundtrip

found 5 days ago

Select United flight, departing Fri, Jul 18 from Boston to Porto, returning Fri, Sep 19, priced at $645 found 5 days ago

Sun, Jul 20 - Mon, Sep 22

BOS

Boston

OPO

Porto

$648 Roundtrip, found 5 days ago

$648

Roundtrip

found 5 days ago

Select United flight, departing Sun, Jul 20 from Boston to Porto, returning Mon, Sep 22, priced at $648 found 5 days ago

Mon, Jun 23 - Tue, Jul 8

BOS

Boston

OPO

Porto

$673 Roundtrip, found 1 day ago

$673

Roundtrip

found 1 day ago

Select United flight, departing Mon, Jun 23 from Boston to Porto, returning Tue, Jul 8, priced at $673 found 1 day ago

Mon, Jun 23 - Tue, Jul 8

BOS

Boston

OPO

Porto

$677 Roundtrip, found 1 day ago

$677

Roundtrip

found 1 day ago

Select United flight, departing Mon, Jun 23 from Boston to Porto, returning Tue, Jul 8, priced at $677 found 1 day ago

Mon, Jun 23 - Tue, Jul 8

BOS

Boston

OPO

Porto

$677 Roundtrip, found 1 day ago

$677

Roundtrip

found 1 day ago

Select United flight, departing Mon, Jun 23 from Boston to Porto, returning Tue, Jul 8, priced at $677 found 1 day ago