AirHint found the following cheapest return flights from Seattle (SEA) to Barcelona (BCN) in April 2026 (see full year).
Return flights
| 14 Apr - 19 Apr | Scandinavian Airlines | ||
| 15 Apr - 21 Apr | Icelandair | ||
| 16 Apr - 23 Apr | Icelandair | ||
| 17 Apr - 25 Apr | Icelandair | ||
| 15 Apr - 19 Apr | Aer Lingus | ||
| 03 Apr - 11 Apr | Turkish Airlines |
Also check the deals for one-way flights from Seattle to Barcelona in April.
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