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 13 days agoJuly 2026
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Great Availability
66% of dates checked are available within 10% of the lowest price
Saturday, July 4th, 2026
0 round-trip options
No flight details available for this date.