OPO to IAD from $641 in economy – flightdeals.net

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Iberia Airlines

IBIberia Airlines

Round Trip•Economy

Francisco Sá Carneiro Airport

Porto, Portugal

Washington Dulles International Airport

Washington, United States

$817 USD

-22%$641 USD

Verified 14 days ago

December 2026

Mon

Tue

Wed

Thu

Fri

Sat

Sun

30$641 1$660 2$641 3$641 4$641 5$2,352 6$978 7$641 8$963 9$641 10$641 11$641 12 13 14$1,130 15 16$641 17$641 18$641 19 20 21$755 22 23$641 24$641 25$641 26 27 28$715 29 30$687 31$641 1$892 2 3

Good Availability

51% of dates checked are available within 10% of the lowest price

Thursday, December 10th, 2026

3 round-trip options

Returning

Thu, Dec 17, 2026•7 Day Trip

$641 USD

Returning

Fri, Dec 18, 2026•8 Day Trip

$2,332 USD

Returning

Wed, Dec 23, 2026•13 Day Trip

$1,130 USD