Cheapest return flights from Seattle to Barcelona in March from $444

AirHint found the following cheapest return flights from Seattle (SEA) to Barcelona (BCN) in March 2026 (see full year).

Return flights

06 Mar - 10 Mar Icelandair
08 Mar - 13 Mar Icelandair
10 Mar - 15 Mar Lufthansa
17 Mar - 24 Mar Lufthansa
03 Mar - 17 Mar Turkish Airlines
25 Mar - 08 Apr Turkish Airlines
13 Mar - 20 Mar Lufthansa
03 Mar - 08 Mar Icelandair
04 Mar - 08 Mar Lufthansa
07 Mar - 15 Mar Lufthansa
12 Mar - 19 Mar British Airways
26 Mar - 02 Apr Turkish Airlines

Also check the deals for one-way flights from Seattle to Barcelona in March.

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