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
Tuesday, December 22nd, 2026
8 round-trip options
Returning
Sun, Dec 27, 2026•5 Day Trip
$1,579 USD
Returning
Mon, Dec 28, 2026•6 Day Trip
$1,405 USD
Returning
Tue, Dec 29, 2026•7 Day Trip
$1,374 USD
Returning
Wed, Dec 30, 2026•8 Day Trip
$1,345 USD
Returning
Fri, Jan 1, 2027•10 Day Trip
$1,470 USD
Returning
Sat, Jan 2, 2027•11 Day Trip
$2,358 USD
Returning
Sun, Jan 3, 2027•12 Day Trip
$1,929 USD
Returning
Tue, Jan 5, 2027•14 Day Trip
$1,402 USD