$619 Cheap KLM flights Seattle (SEA) to Barcelona (BCN)

View $619 flight on Sun, Mar 15, 2026Opens in a new window

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$619 Cheap KLM flights Seattle (SEA) to Barcelona (BCN)

Prices were available within the past 7 days and start at $619 for one-way flights and $826 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

KLM
Mon, Aug 25 - Tue, Sep 2
SEA
Seattle
BCN
Barcelona
$826 Roundtrip, found 15 hours ago
$826
Roundtrip
found 15 hours ago
Select KLM flight, departing Mon, Aug 25 from Seattle to Barcelona, returning Tue, Sep 2, priced at $826 found 15 hours ago
Flights from Seattle (SEA) to Barcelona (BCN)
Origin airport
Seattle - Tacoma Intl.
Destination airport
Barcelona Intl.
Airlines serving
Aer Lingus, Air Canada, Air France, Alaska Airlines, American Airlines, British Airways, Brussels Airlines, Delta, Finnair, Iberia, Icelandair, KLM, Lufthansa, Scandinavian Airlines, Swiss International Air Lines, TAP Portugal, Turkish Airlines, United, Virgin Atlantic, WestJet
Popular airline
British Airways
Distance
5423 mi

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