Cheapest return flights from Seattle to Barcelona in April from 358€

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

Return flights

22 Apr - 06 May Icelandair
21 Apr - 04 May Icelandair
08 Apr - 22 Apr Lufthansa
18 Apr - 29 Apr Delta
15 Apr - 25 Apr United
20 Apr - 24 Apr Icelandair
10 Apr - 20 Apr Frontier Airlines
11 Apr - 20 Apr Alaska Airlines
03 Apr - 12 Apr Alaska Airlines
01 Apr - 11 Apr Turkish Airlines

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

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