$618 Cheap KLM flights Washington (IAD) to Porto (OPO)

View $618 flight on Thu, Apr 23, 2026Opens in a new window

$618 Cheap KLM flights Washington (IAD) to Porto (OPO)

Prices were available within the past 7 days and start at $618 for one-way flights and $754 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

KLM
Thu, Apr 23 - Fri, May 1
IAD
Washington
OPO
Porto
$754 Roundtrip, found 7 hours ago
$754
Roundtrip
found 7 hours ago
Select KLM flight, departing Thu, Apr 23 from Washington to Porto, returning Fri, May 1, priced at $754 found 7 hours ago

Travel information

Origin airport
Washington Dulles Intl.
Destination airport
Dr. Francisco de Sa Carneiro
Airlines serving
Air France, British Airways, Brussels Airlines, Delta, KLM, Lufthansa, Swiss International Air Lines, TAP Portugal, Turkish Airlines, United
Popular airline
Turkish Airlines
Distance
5663 km

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