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 agoJuly 2026
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Limited Availability
19% of dates checked are available within 10% of the lowest price
Friday, July 3rd, 2026
0 round-trip options
No flight details available for this date.