AirHint found the following cheapest one-way flights from Seattle (SEA) to Barcelona (BCN) in November 2025 (see full year).
One-Way flights
| 28 Nov | WestJet | ||
| 29 Nov | WestJet | ||
| 14 Nov | Alaska Airlines | ||
| 16 Nov | Icelandair |
Also check the deals for return flights from Seattle to Barcelona in November.
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