OPOFrancisco Sá Carneiro Airport
Porto, Portugal
IADWashington Dulles International Airport
Washington, United States
$1,003 USD
-49%$512 USD
Verified Nov 29, 2025 at 7:05 AMMarch 2026
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Fair Availability
28% of dates checked are available within 10% of the lowest price
Monday, March 16th, 2026
8 round-trip options
Returning
Sat, Mar 21, 2026•5 Day Trip
$771 USD
Returning
Sun, Mar 22, 2026•6 Day Trip
$701 USD
Returning
Mon, Mar 23, 2026•7 Day Trip
$688 USD
Returning
Tue, Mar 24, 2026•8 Day Trip
$701 USD
Returning
Wed, Mar 25, 2026•9 Day Trip
$858 USD
Returning
Thu, Mar 26, 2026•10 Day Trip
$1,217 USD
Returning
Sun, Mar 29, 2026•13 Day Trip
$976 USD
Returning
Mon, Mar 30, 2026•14 Day Trip
$836 USD