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
Wednesday, December 23rd, 2026
8 round-trip options
Returning
Mon, Dec 28, 2026•5 Day Trip
$1,296 USD
Returning
Tue, Dec 29, 2026•6 Day Trip
$1,271 USD
Returning
Wed, Dec 30, 2026•7 Day Trip
$1,236 USD
Returning
Thu, Dec 31, 2026•8 Day Trip
$1,080 USD
Returning
Sat, Jan 2, 2027•10 Day Trip
$2,249 USD
Returning
Sun, Jan 3, 2027•11 Day Trip
$1,826 USD
Returning
Mon, Jan 4, 2027•12 Day Trip
$1,665 USD
Returning
Wed, Jan 6, 2027•14 Day Trip
$1,321 USD