Porto (OPO) to Washington (IAD) flight deal in economy from $357
OPOFrancisco Sá Carneiro Airport
Porto, Portugal
IADWashington Dulles International Airport
Washington, United States
$544 USD
-34%$357 USD
Verified 3 days agoDecember 2026
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Great Availability
65% of dates checked are available within 10% of the lowest price
Monday, December 7th, 2026
Outbound Flights
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