Washington (IAD) to Porto (OPO) flight deal in economy from $350
IADWashington Dulles International Airport
Washington, United States
OPOFrancisco Sá Carneiro Airport
Porto, Portugal
$650 USD
-46%$350 USD
Verified 1 day agoAugust 2026
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Fair Availability
25% of dates checked are available within 10% of the lowest price
Monday, August 3rd, 2026
Outbound Flights
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