IADWashington Dulles International Airport
Washington, United States
OPOFrancisco Sá Carneiro Airport
Porto, Portugal
$1,204 USD
-63%$441 USD
Verified Nov 29, 2025 at 7:02 AMMarch 2026
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Extremely Rare Availability
1% of dates checked are available within 10% of the lowest price
Sunday, March 22nd, 2026
10 round-trip options
Returning
Fri, Mar 27, 2026•5 Day Trip
$1,708 USD
Returning
Sat, Mar 28, 2026•6 Day Trip
$962 USD
Returning
Sun, Mar 29, 2026•7 Day Trip
$852 USD
Returning
Mon, Mar 30, 2026•8 Day Trip
$737 USD
Returning
Tue, Mar 31, 2026•9 Day Trip
$620 USD
Returning
Wed, Apr 1, 2026•10 Day Trip
$620 USD
Returning
Thu, Apr 2, 2026•11 Day Trip
$1,374 USD
Returning
Fri, Apr 3, 2026•12 Day Trip
$1,068 USD
Returning
Sat, Apr 4, 2026•13 Day Trip
$1,128 USD
Returning
Sun, Apr 5, 2026•14 Day Trip
$1,275 USD