Porto (OPO) to Washington (IAD) flight deal in economy from $641
OPOFrancisco Sá Carneiro Airport
Porto, Portugal
IADWashington Dulles International Airport
Washington, United States
$817 USD
-22%$641 USD
Verified 14 days agoNovember 2026
Mon
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Good Availability
51% of dates checked are available within 10% of the lowest price
Thursday, November 5th, 2026
5 round-trip options
Returning
Tue, Nov 10, 2026•5 Day Trip
$642 USD
Returning
Thu, Nov 12, 2026•7 Day Trip
$641 USD
Returning
Fri, Nov 13, 2026•8 Day Trip
$641 USD
Returning
Sat, Nov 14, 2026•9 Day Trip
$642 USD
Returning
Wed, Nov 18, 2026•13 Day Trip
$641 USD