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
Monday, December 28th, 2026
3 round-trip options
Returning
Sat, Jan 2, 2027•5 Day Trip
$813 USD
Returning
Mon, Jan 4, 2027•7 Day Trip
$687 USD
Returning
Sat, Jan 9, 2027•12 Day Trip
$687 USD