Porto (OPO) to Washington (IAD) flight deal in economy from $341

Iberia AirlinesIBIberia Airlines
One Way•Economy
PortugalOPO

Francisco Sá Carneiro Airport

Porto, Portugal
United StatesIAD

Washington Dulles International Airport

Washington, United States
$540 USD
-37%$341 USD
Verified about 15 hours ago
Good Availability
57% of dates checked are available within 10% of the lowest price

Monday, June 8th, 2026

No flight details available for this date.