Porto (OPO) to Washington (IAD) flight deal in economy from $641

Iberia AirlinesIBIberia Airlines
Round Trip•Economy
PortugalOPO

Francisco Sá Carneiro Airport

Porto, Portugal
United StatesIAD

Washington Dulles International Airport

Washington, United States
$817 USD
-22%$641 USD
Verified 14 days ago
Good Availability
51% of dates checked are available within 10% of the lowest price

Saturday, November 28th, 2026

5 round-trip options

Returning
Thu, Dec 3, 2026•5 Day Trip
$855 USD
Google Flights
Returning
Sat, Dec 5, 2026•7 Day Trip
$1,345 USD
Google Flights
Returning
Sun, Dec 6, 2026•8 Day Trip
$1,023 USD
Google Flights
Returning
Mon, Dec 7, 2026•9 Day Trip
$855 USD
Google Flights
Returning
Fri, Dec 11, 2026•13 Day Trip
$855 USD
Google Flights