OPO to IAD from $357 in economy – flightdeals.net

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Iberia Airlines

IBIberia Airlines

One Way•Economy

Francisco Sá Carneiro Airport

Porto, Portugal

Washington Dulles International Airport

Washington, United States

$544 USD

-34%$357 USD

Verified 3 days ago

August 2026

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27 28 29 30 31 1 2 3 4 5 6 7 8 9 10 11 12 13$2,786 14$8,481 15$2,786 16$2,766 17$2,766 18$2,785 19$1,367 20$1,106 21$1,125 22$2,786 23$1,485 24$982 25$845 26$845 27$982 28$845 29$845 30$982 31$845 1$845 2$845 3$845 4$845 5$845 6$845

Great Availability

65% of dates checked are available within 10% of the lowest price

Sunday, August 9th, 2026

No flight details available for this date.