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

Tuesday, September 1st, 2026

5 round-trip options

Returning
Mon, Sep 7, 2026•6 Day Trip
$1,115 USD
Google Flights
Returning
Wed, Sep 9, 2026•8 Day Trip
$1,127 USD
Google Flights
Returning
Thu, Sep 10, 2026•9 Day Trip
$972 USD
Google Flights
Returning
Sat, Sep 12, 2026•11 Day Trip
$1,102 USD
Google Flights
Returning
Mon, Sep 14, 2026•13 Day Trip
$1,115 USD
Google Flights