Porto (OPO) to Washington (IAD) flight deal in economy from $676
OPOFrancisco Sá Carneiro Airport
Porto, Portugal
IADWashington Dulles International Airport
Washington, United States
$739 USD
-9%$676 USD
Verified 13 days agoOctober 2026
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Great Availability
66% of dates checked are available within 10% of the lowest price
Monday, October 5th, 2026
4 round-trip options
Returning
Sun, Oct 11, 2026•6 Day Trip
$681 USD
Returning
Tue, Oct 13, 2026•8 Day Trip
$681 USD
Returning
Fri, Oct 16, 2026•11 Day Trip
$681 USD
Returning
Sun, Oct 18, 2026•13 Day Trip
$681 USD