IADWashington Dulles International Airport
Washington, United States
OPOFrancisco Sá Carneiro Airport
Porto, Portugal
$1,304 USD
-62%$491 USD
Verified Nov 4, 2025 at 6:21 AMDecember 2025
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Extremely Rare Availability
1% of dates checked are available within 10% of the lowest price
Thursday, December 4th, 2025
10 round-trip options
Returning
Tue, Dec 9, 2025•5 Day Trip
$708 USD
Returning
Wed, Dec 10, 2025•6 Day Trip
$722 USD
Returning
Thu, Dec 11, 2025•7 Day Trip
$545 USD
Returning
Fri, Dec 12, 2025•8 Day Trip
$869 USD
Returning
Sat, Dec 13, 2025•9 Day Trip
$933 USD
Returning
Sun, Dec 14, 2025•10 Day Trip
$745 USD
Returning
Mon, Dec 15, 2025•11 Day Trip
$759 USD
Returning
Tue, Dec 16, 2025•12 Day Trip
$695 USD
Returning
Wed, Dec 17, 2025•13 Day Trip
$819 USD
Returning
Thu, Dec 18, 2025•14 Day Trip
$695 USD