Porto (OPO) to Washington (IAD) flight deal in economy from $641
OPOFrancisco Sá Carneiro Airport
Porto, Portugal
IADWashington Dulles International Airport
Washington, United States
$817 USD
-22%$641 USD
Verified 13 days agoOctober 2026
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Good Availability
51% of dates checked are available within 10% of the lowest price
Monday, October 26th, 2026
6 round-trip options
Returning
Sat, Oct 31, 2026•5 Day Trip
$790 USD
Returning
Sun, Nov 1, 2026•6 Day Trip
$836 USD
Returning
Mon, Nov 2, 2026•7 Day Trip
$641 USD
Returning
Thu, Nov 5, 2026•10 Day Trip
$641 USD
Returning
Fri, Nov 6, 2026•11 Day Trip
$641 USD
Returning
Sat, Nov 7, 2026•12 Day Trip
$735 USD