AirHint found the following cheapest one-way flights from Seattle (SEA) to Barcelona (BCN) in October 2026 (see full year).
One-Way flights
| 31 Oct | Icelandair | ||
| 09 Oct | Icelandair | ||
| 06 Oct | Icelandair | ||
| 08 Oct | Icelandair | ||
| 22 Oct | Icelandair | ||
| 07 Oct | Icelandair | ||
| 10 Oct | Icelandair | ||
| 15 Oct | Icelandair | ||
| 06 Oct | Air France | direct | |
| 15 Oct | Air France | direct |
Also check the deals for return flights from Seattle to Barcelona in October.
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