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
Thursday, December 31st, 2026
8 round-trip options
Returning
Tue, Jan 5, 2027•5 Day Trip
$1,051 USD
Returning
Wed, Jan 6, 2027•6 Day Trip
$1,060 USD
Returning
Thu, Jan 7, 2027•7 Day Trip
$819 USD
Returning
Fri, Jan 8, 2027•8 Day Trip
$1,060 USD
Returning
Sun, Jan 10, 2027•10 Day Trip
$1,108 USD
Returning
Mon, Jan 11, 2027•11 Day Trip
$965 USD
Returning
Tue, Jan 12, 2027•12 Day Trip
$926 USD
Returning
Thu, Jan 14, 2027•14 Day Trip
$789 USD