Cheap United flights Washington (DCA) to Porto (OPO)

Cheap United flights Washington (DCA) to Porto (OPO)

Prices were available within the past 7 days and start at for one-way flights and $832 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Tue, May 26 - Wed, Jun 17

DCA

Washington

OPO

Porto

$832 Roundtrip, found 1 day ago

$832

Roundtrip

found 1 day ago

Select United flight, departing Tue, May 26 from Washington to Porto, returning Wed, Jun 17, priced at $832 found 1 day ago

Mon, May 25 - Sun, Jun 14

DCA

Washington

OPO

Porto

$902 Roundtrip, found 1 day ago

$902

Roundtrip

found 1 day ago

Select United flight, departing Mon, May 25 from Washington to Porto, returning Sun, Jun 14, priced at $902 found 1 day ago

Thu, May 14 - Fri, May 15

DCA

Washington

OPO

Porto

$5,516 Roundtrip, found 1 day ago

$5,516

Roundtrip

found 1 day ago

Select United flight, departing Thu, May 14 from Washington to Porto, returning Fri, May 15, priced at $5,516 found 1 day ago

Thu, May 14 - Fri, May 15

DCA

Washington

OPO

Porto

$5,942 Roundtrip, found 1 day ago

$5,942

Roundtrip

found 1 day ago

Select United flight, departing Thu, May 14 from Washington to Porto, returning Fri, May 15, priced at $5,942 found 1 day ago

Thu, May 14 - Fri, May 15

DCA

Washington

OPO

Porto

$5,980 Roundtrip, found 1 day ago

$5,980

Roundtrip

found 1 day ago

Select United flight, departing Thu, May 14 from Washington to Porto, returning Fri, May 15, priced at $5,980 found 1 day ago

Thu, May 14 - Fri, May 15

DCA

Washington

OPO

Porto

$5,994 Roundtrip, found 1 day ago

$5,994

Roundtrip

found 1 day ago

Select United flight, departing Thu, May 14 from Washington to Porto, returning Fri, May 15, priced at $5,994 found 1 day ago