Porto (OPO) to Washington (IAD) flight deal in economy from $599

Iberia AirlinesIBIberia Airlines
Round Trip•Economy
PortugalOPO

Francisco Sá Carneiro Airport

Porto, Portugal
United StatesIAD

Washington Dulles International Airport

Washington, United States
$785 USD
-24%$599 USD
Verified about 6 hours ago
Good Availability
45% of dates checked are available within 10% of the lowest price

Tuesday, December 8th, 2026

10 round-trip options

Returning
Sun, Dec 13, 2026•5 Day Trip
$754 USD
Google Flights
Returning
Mon, Dec 14, 2026•6 Day Trip
$599 USD
Google Flights
Returning
Tue, Dec 15, 2026•7 Day Trip
$599 USD
Google Flights
Returning
Wed, Dec 16, 2026•8 Day Trip
$892 USD
Google Flights
Returning
Thu, Dec 17, 2026•9 Day Trip
$892 USD
Google Flights
Returning
Fri, Dec 18, 2026•10 Day Trip
$959 USD
Google Flights
Returning
Sat, Dec 19, 2026•11 Day Trip
$1,200 USD
Google Flights
Returning
Sun, Dec 20, 2026•12 Day Trip
$1,483 USD
Google Flights
Returning
Mon, Dec 21, 2026•13 Day Trip
$1,134 USD
Google Flights
Returning
Tue, Dec 22, 2026•14 Day Trip
$834 USD
Google Flights