Cheapest return flights from Seattle to Barcelona in May from $510

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

Return flights

05 May - 13 May Condor
06 May - 17 May Condor
04 May - 30 May Condor
19 May - 31 May Condor
14 May - 25 May Condor
12 May - 23 May Condor
18 May - 08 Jun Condor
16 May - 06 Jun Icelandair
13 May - 06 Jun Condor
23 May - 07 Jun Condor
23 May - 07 Jun Air France direct
19 May - 31 May Air France direct

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

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