IADWashington Dulles International Airport
Washington, United States
OPOFrancisco Sá Carneiro Airport
Porto, Portugal
$498 USD
-36%$320 USD
Verified Mar 22, 2026 at 6:50 AMMarch 2026
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Fair Availability
24% of dates checked are available within 10% of the lowest price
Thursday, March 12th, 2026
No flight details available for this date.