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

Sunday, August 23rd, 2026

6 round-trip options

Returning
Sat, Aug 29, 2026•6 Day Trip
$1,470 USD
Google Flights
Returning
Sun, Aug 30, 2026•7 Day Trip
$1,290 USD
Google Flights
Returning
Mon, Aug 31, 2026•8 Day Trip
$1,115 USD
Google Flights
Returning
Wed, Sep 2, 2026•10 Day Trip
$972 USD
Google Flights
Returning
Fri, Sep 4, 2026•12 Day Trip
$972 USD
Google Flights
Returning
Sun, Sep 6, 2026•14 Day Trip
$1,102 USD
Google Flights