Cheapest return flights from Seattle to Barcelona in April from $433

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

Return flights

25 Apr - 02 May Icelandair
20 Apr - 28 Apr Air Canada
08 Apr - 22 Apr Air Canada
12 Apr - 20 Apr British Airways
18 Apr - 24 Apr Aer Lingus
15 Apr - 25 Apr Air Canada
17 Apr - 25 Apr United
06 Apr - 13 Apr Icelandair
22 Apr - 05 May Aer Lingus
07 Apr - 12 Apr Turkish Airlines
04 Apr - 10 Apr Turkish Airlines
10 Apr - 18 Apr United

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

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