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

Tuesday, November 3rd, 2026

5 round-trip options

Returning
Sun, Nov 8, 2026•5 Day Trip
$1,423 USD
Google Flights
Returning
Tue, Nov 10, 2026•7 Day Trip
$962 USD
Google Flights
Returning
Wed, Nov 11, 2026•8 Day Trip
$961 USD
Google Flights
Returning
Thu, Nov 12, 2026•9 Day Trip
$961 USD
Google Flights
Returning
Mon, Nov 16, 2026•13 Day Trip
$912 USD
Google Flights