$631 Cheap KLM flights Seattle (SEA) to Barcelona (BCN)

View $631 flight on Sat, Mar 7, 2026Opens in a new window

$631 Cheap KLM flights Seattle (SEA) to Barcelona (BCN)

Prices were available within the past 7 days and start at $631 for one-way flights and $536 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

KLM
Tue, Feb 3 - Fri, Feb 13
SEA
Seattle
BCN
Barcelona
$536 Roundtrip, found 15 hours ago
$536
Roundtrip
found 15 hours ago
Select KLM flight, departing Tue, Feb 3 from Seattle to Barcelona, returning Fri, Feb 13, priced at $536 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 Europa, Air France, American Airlines, British Airways, Brussels Airlines, Condor, Delta, Finnair, Iberia, Icelandair, JetBlue Airways, KLM, Lufthansa, Swiss International Air Lines, TAP Portugal, Turkish Airlines, United, Virgin Atlantic
Popular airline
Lufthansa
Distance
5423 mi

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