Washington (IAD) to Porto (OPO) flight deal in economy from $739
IADWashington Dulles International Airport
Washington, United States
OPOFrancisco Sá Carneiro Airport
Porto, Portugal
$1,088 USD
-32%$739 USD
Verified 13 days agoDecember 2026
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Limited Availability
19% of dates checked are available within 10% of the lowest price
Monday, December 14th, 2026
8 round-trip options
Returning
Sat, Dec 19, 2026•5 Day Trip
$1,250 USD
Returning
Sun, Dec 20, 2026•6 Day Trip
$840 USD
Returning
Mon, Dec 21, 2026•7 Day Trip
$870 USD
Returning
Tue, Dec 22, 2026•8 Day Trip
$871 USD
Returning
Thu, Dec 24, 2026•10 Day Trip
$769 USD
Returning
Fri, Dec 25, 2026•11 Day Trip
$769 USD
Returning
Sat, Dec 26, 2026•12 Day Trip
$2,103 USD
Returning
Mon, Dec 28, 2026•14 Day Trip
$1,015 USD