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 2nd, 2026

6 round-trip options

Returning
Sat, Aug 8, 2026•6 Day Trip
$1,588 USD
Google Flights
Returning
Sun, Aug 9, 2026•7 Day Trip
$1,365 USD
Google Flights
Returning
Mon, Aug 10, 2026•8 Day Trip
$1,569 USD
Google Flights
Returning
Wed, Aug 12, 2026•10 Day Trip
$916 USD
Google Flights
Returning
Fri, Aug 14, 2026•12 Day Trip
$1,687 USD
Google Flights
Returning
Sun, Aug 16, 2026•14 Day Trip
$2,373 USD
Google Flights