$501 Cheap United flights Chicago (ORD) to Porto (OPO)

$501 Cheap United flights Chicago (ORD) to Porto (OPO)

Prices were available within the past 7 days and start at $501 for one-way flights and $572 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Mon, Jul 28 - Thu, Aug 21

ORD

Chicago

OPO

Porto

$572 Roundtrip, found 1 day ago

$572

Roundtrip

found 1 day ago

Select United flight, departing Mon, Jul 28 from Chicago to Porto, returning Thu, Aug 21, priced at $572 found 1 day ago

Mon, Jul 28 - Thu, Aug 21

ORD

Chicago

OPO

Porto

$577 Roundtrip, found 1 day ago

$577

Roundtrip

found 1 day ago

Select United flight, departing Mon, Jul 28 from Chicago to Porto, returning Thu, Aug 21, priced at $577 found 1 day ago

Mon, Jul 28 - Thu, Aug 21

ORD

Chicago

OPO

Porto

$587 Roundtrip, found 1 day ago

$587

Roundtrip

found 1 day ago

Select United flight, departing Mon, Jul 28 from Chicago to Porto, returning Thu, Aug 21, priced at $587 found 1 day ago

Sat, Jul 26 - Thu, Aug 21

ORD

Chicago

OPO

Porto

$588 Roundtrip, found 1 day ago

$588

Roundtrip

found 1 day ago

Select United flight, departing Sat, Jul 26 from Chicago to Porto, returning Thu, Aug 21, priced at $588 found 1 day ago

Sat, Jul 26 - Wed, Aug 20

ORD

Chicago

OPO

Porto

$593 Roundtrip, found 1 day ago

$593

Roundtrip

found 1 day ago

Select United flight, departing Sat, Jul 26 from Chicago to Porto, returning Wed, Aug 20, priced at $593 found 1 day ago

Sun, Jul 27 - Thu, Aug 21

ORD

Chicago

OPO

Porto

$630 Roundtrip, found 1 day ago

$630

Roundtrip

found 1 day ago

Select United flight, departing Sun, Jul 27 from Chicago to Porto, returning Thu, Aug 21, priced at $630 found 1 day ago

Thu, Jul 31 - Thu, Aug 21

ORD

Chicago

OPO

Porto

$637 Roundtrip, found 1 day ago

$637

Roundtrip

found 1 day ago

Select United flight, departing Thu, Jul 31 from Chicago to Porto, returning Thu, Aug 21, priced at $637 found 1 day ago