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
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Limited Availability
19% of dates checked are available within 10% of the lowest price
Monday, December 28th, 2026
8 round-trip options
Returning
Sat, Jan 2, 2027•5 Day Trip
$2,237 USD
Returning
Sun, Jan 3, 2027•6 Day Trip
$1,667 USD
Returning
Mon, Jan 4, 2027•7 Day Trip
$1,498 USD
Returning
Tue, Jan 5, 2027•8 Day Trip
$1,141 USD
Returning
Thu, Jan 7, 2027•10 Day Trip
$913 USD
Returning
Fri, Jan 8, 2027•11 Day Trip
$1,154 USD
Returning
Sat, Jan 9, 2027•12 Day Trip
$1,338 USD
Returning
Mon, Jan 11, 2027•14 Day Trip
$1,059 USD