$159 Cheap United flights Boston (BOS) to Porto (OPO)

$159 Cheap United flights Boston (BOS) to Porto (OPO)

Prices were available within the past 7 days and start at $159 for one-way flights and $368 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Mon, Oct 20 - Tue, Dec 16

BOS

Boston

OPO

Porto

$368 Roundtrip, found 11 hours ago

$368

Roundtrip

found 11 hours ago

Select United flight, departing Mon, Oct 20 from Boston to Porto, returning Tue, Dec 16, priced at $368 found 11 hours ago

Mon, Oct 20 - Tue, Dec 16

BOS

Boston

OPO

Porto

$373 Roundtrip, found 11 hours ago

$373

Roundtrip

found 11 hours ago

Select United flight, departing Mon, Oct 20 from Boston to Porto, returning Tue, Dec 16, priced at $373 found 11 hours ago

Mon, Oct 20 - Tue, Dec 16

BOS

Boston

OPO

Porto

$380 Roundtrip, found 11 hours ago

$380

Roundtrip

found 11 hours ago

Select United flight, departing Mon, Oct 20 from Boston to Porto, returning Tue, Dec 16, priced at $380 found 11 hours ago

Mon, Oct 20 - Tue, Dec 16

BOS

Boston

OPO

Porto

$385 Roundtrip, found 11 hours ago

$385

Roundtrip

found 11 hours ago

Select United flight, departing Mon, Oct 20 from Boston to Porto, returning Tue, Dec 16, priced at $385 found 11 hours ago

Mon, Oct 20 - Mon, Dec 15

BOS

Boston

OPO

Porto

$393 Roundtrip, found 11 hours ago

$393

Roundtrip

found 11 hours ago

Select United flight, departing Mon, Oct 20 from Boston to Porto, returning Mon, Dec 15, priced at $393 found 11 hours ago

Mon, Oct 20 - Mon, Dec 15

BOS

Boston

OPO

Porto

$397 Roundtrip, found 11 hours ago

$397

Roundtrip

found 11 hours ago

Select United flight, departing Mon, Oct 20 from Boston to Porto, returning Mon, Dec 15, priced at $397 found 11 hours ago