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 agoOctober 2026
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Limited Availability
19% of dates checked are available within 10% of the lowest price
Thursday, October 29th, 2026
5 round-trip options
Returning
Wed, Nov 4, 2026•6 Day Trip
$789 USD
Returning
Fri, Nov 6, 2026•8 Day Trip
$933 USD
Returning
Sat, Nov 7, 2026•9 Day Trip
$1,708 USD
Returning
Mon, Nov 9, 2026•11 Day Trip
$920 USD
Returning
Wed, Nov 11, 2026•13 Day Trip
$789 USD