Washington (IAD) to Porto (OPO) flight deal in economy from $739

Iberia AirlinesIBIberia Airlines
Round Trip•Economy
United StatesIAD

Washington Dulles International Airport

Washington, United States
PortugalOPO

Francisco Sá Carneiro Airport

Porto, Portugal
$1,088 USD
-32%$739 USD
Verified 13 days ago
Limited Availability
19% of dates checked are available within 10% of the lowest price

Thursday, August 13th, 2026

6 round-trip options

Returning
Wed, Aug 19, 2026•6 Day Trip
$1,171 USD
Google Flights
Returning
Thu, Aug 20, 2026•7 Day Trip
$975 USD
Google Flights
Returning
Fri, Aug 21, 2026•8 Day Trip
$1,592 USD
Google Flights
Returning
Sun, Aug 23, 2026•10 Day Trip
$1,294 USD
Google Flights
Returning
Tue, Aug 25, 2026•12 Day Trip
$919 USD
Google Flights
Returning
Thu, Aug 27, 2026•14 Day Trip
$919 USD
Google Flights