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
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Limited Availability
19% of dates checked are available within 10% of the lowest price
Wednesday, October 28th, 2026
5 round-trip options
Returning
Tue, Nov 3, 2026•6 Day Trip
$947 USD
Returning
Thu, Nov 5, 2026•8 Day Trip
$739 USD
Returning
Fri, Nov 6, 2026•9 Day Trip
$883 USD
Returning
Sun, Nov 8, 2026•11 Day Trip
$1,071 USD
Returning
Tue, Nov 10, 2026•13 Day Trip
$947 USD