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 21st, 2026
8 round-trip options
Returning
Sat, Dec 26, 2026•5 Day Trip
$2,754 USD
Returning
Sun, Dec 27, 2026•6 Day Trip
$1,698 USD
Returning
Mon, Dec 28, 2026•7 Day Trip
$1,530 USD
Returning
Tue, Dec 29, 2026•8 Day Trip
$1,493 USD
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Thu, Dec 31, 2026•10 Day Trip
$1,314 USD
Returning
Fri, Jan 1, 2027•11 Day Trip
$1,595 USD
Returning
Sat, Jan 2, 2027•12 Day Trip
$2,483 USD
Returning
Mon, Jan 4, 2027•14 Day Trip
$1,899 USD