Washington (IAD) to Porto (OPO) flight deal in economy from $739
IADWashington Dulles International Airport
Washington, United States
OPOFrancisco Sá Carneiro Airport
Porto, Portugal
$1,088 USD
-32%$739 USD
Verified 13 days agoDecember 2026
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Limited Availability
19% of dates checked are available within 10% of the lowest price
Saturday, December 5th, 2026
8 round-trip options
Returning
Thu, Dec 10, 2026•5 Day Trip
$1,202 USD
Returning
Fri, Dec 11, 2026•6 Day Trip
$1,501 USD
Returning
Sat, Dec 12, 2026•7 Day Trip
$1,433 USD
Returning
Sun, Dec 13, 2026•8 Day Trip
$1,259 USD
Returning
Tue, Dec 15, 2026•10 Day Trip
$1,149 USD
Returning
Wed, Dec 16, 2026•11 Day Trip
$1,047 USD
Returning
Thu, Dec 17, 2026•12 Day Trip
$1,047 USD
Returning
Sat, Dec 19, 2026•14 Day Trip
$1,433 USD