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, September 24th, 2026

5 round-trip options

Returning
Wed, Sep 30, 2026•6 Day Trip
$919 USD
Google Flights
Returning
Fri, Oct 2, 2026•8 Day Trip
$1,045 USD
Google Flights
Returning
Sat, Oct 3, 2026•9 Day Trip
$1,035 USD
Google Flights
Returning
Mon, Oct 5, 2026•11 Day Trip
$979 USD
Google Flights
Returning
Wed, Oct 7, 2026•13 Day Trip
$919 USD
Google Flights