$364 Cheap United flights Boston (BOS) to Porto (OPO)

$364 Cheap United flights Boston (BOS) to Porto (OPO)

Prices were available within the past 7 days and start at $364 for one-way flights and $388 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Tue, Jan 20 - Wed, Feb 18

BOS

Boston

OPO

Porto

$388 Roundtrip, found 17 hours ago

$388

Roundtrip

found 17 hours ago

Select United flight, departing Tue, Jan 20 from Boston to Porto, returning Wed, Feb 18, priced at $388 found 17 hours ago

Tue, Jan 20 - Tue, Feb 17

BOS

Boston

OPO

Porto

$388 Roundtrip, found 17 hours ago

$388

Roundtrip

found 17 hours ago

Select United flight, departing Tue, Jan 20 from Boston to Porto, returning Tue, Feb 17, priced at $388 found 17 hours ago

Tue, Jan 20 - Tue, Feb 17

BOS

Boston

OPO

Porto

$396 Roundtrip, found 17 hours ago

$396

Roundtrip

found 17 hours ago

Select United flight, departing Tue, Jan 20 from Boston to Porto, returning Tue, Feb 17, priced at $396 found 17 hours ago

Tue, Jan 20 - Tue, Feb 17

BOS

Boston

OPO

Porto

$401 Roundtrip, found 17 hours ago

$401

Roundtrip

found 17 hours ago

Select United flight, departing Tue, Jan 20 from Boston to Porto, returning Tue, Feb 17, priced at $401 found 17 hours ago

Tue, Jan 20 - Tue, Feb 17

BOS

Boston

OPO

Porto

$407 Roundtrip, found 17 hours ago

$407

Roundtrip

found 17 hours ago

Select United flight, departing Tue, Jan 20 from Boston to Porto, returning Tue, Feb 17, priced at $407 found 17 hours ago

Tue, Jan 20 - Tue, Feb 17

BOS

Boston

OPO

Porto

$408 Roundtrip, found 17 hours ago

$408

Roundtrip

found 17 hours ago

Select United flight, departing Tue, Jan 20 from Boston to Porto, returning Tue, Feb 17, priced at $408 found 17 hours ago

Tue, Jan 20 - Tue, Feb 17

BOS

Boston

OPO

Porto

$409 Roundtrip, found 17 hours ago

$409

Roundtrip

found 17 hours ago

Select United flight, departing Tue, Jan 20 from Boston to Porto, returning Tue, Feb 17, priced at $409 found 17 hours ago

Tue, Jan 20 - Tue, Feb 17

BOS

Boston

OPO

Porto

$410 Roundtrip, found 17 hours ago

$410

Roundtrip

found 17 hours ago

Select United flight, departing Tue, Jan 20 from Boston to Porto, returning Tue, Feb 17, priced at $410 found 17 hours ago

Tue, Jan 20 - Tue, Feb 17

BOS

Boston

OPO

Porto

$415 Roundtrip, found 17 hours ago

$415

Roundtrip

found 17 hours ago

Select United flight, departing Tue, Jan 20 from Boston to Porto, returning Tue, Feb 17, priced at $415 found 17 hours ago

Tue, Jan 20 - Tue, Feb 17

BOS

Boston

OPO

Porto

$418 Roundtrip, found 17 hours ago

$418

Roundtrip

found 17 hours ago

Select United flight, departing Tue, Jan 20 from Boston to Porto, returning Tue, Feb 17, priced at $418 found 17 hours ago

Tue, Jan 20 - Tue, Feb 17

BOS

Boston

OPO

Porto

$418 Roundtrip, found 17 hours ago

$418

Roundtrip

found 17 hours ago

Select United flight, departing Tue, Jan 20 from Boston to Porto, returning Tue, Feb 17, priced at $418 found 17 hours ago