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

Monday, November 23rd, 2026

5 round-trip options

Returning
Sat, Nov 28, 2026•5 Day Trip
$791 USD
Google Flights
Returning
Mon, Nov 30, 2026•7 Day Trip
$641 USD
Google Flights
Returning
Tue, Dec 1, 2026•8 Day Trip
$716 USD
Google Flights
Returning
Wed, Dec 2, 2026•9 Day Trip
$641 USD
Google Flights
Returning
Sun, Dec 6, 2026•13 Day Trip
$809 USD
Google Flights