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
Tuesday, December 15th, 2026
8 round-trip options
Returning
Sun, Dec 20, 2026•5 Day Trip
$999 USD
Returning
Mon, Dec 21, 2026•6 Day Trip
$1,029 USD
Returning
Tue, Dec 22, 2026•7 Day Trip
$1,030 USD
Returning
Wed, Dec 23, 2026•8 Day Trip
$928 USD
Returning
Fri, Dec 25, 2026•10 Day Trip
$928 USD
Returning
Sat, Dec 26, 2026•11 Day Trip
$2,262 USD
Returning
Sun, Dec 27, 2026•12 Day Trip
$1,360 USD
Returning
Tue, Dec 29, 2026•14 Day Trip
$1,155 USD