Porto (OPO) to Washington (IAD) flight deal in economy from $676
OPOFrancisco Sá Carneiro Airport
Porto, Portugal
IADWashington Dulles International Airport
Washington, United States
$739 USD
-9%$676 USD
Verified 15 days agoDecember 2026
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Great Availability
66% of dates checked are available within 10% of the lowest price
Sunday, December 20th, 2026
3 round-trip options
Returning
Fri, Dec 25, 2026•5 Day Trip
$818 USD
Returning
Sun, Dec 27, 2026•7 Day Trip
$693 USD
Returning
Fri, Jan 1, 2027•12 Day Trip
$687 USD