$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 $785 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

KLM
Tue, Nov 11 - Tue, Nov 18
SEA
Seattle
BCN
Barcelona
$785 Roundtrip, found 3 hours ago
$785
Roundtrip
found 3 hours ago
Select KLM flight, departing Tue, Nov 11 from Seattle to Barcelona, returning Tue, Nov 18, priced at $785 found 3 hours ago

Travel information

Travel information

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, Condor, Delta, Finnair, Iberia, Icelandair, KLM, Lufthansa, Scandinavian Airlines, TAP Portugal, Turkish Airlines, United, Virgin Atlantic, WestJet
Popular airline
British Airways
Distance
5423 mi
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