AirHint found the following cheapest return flights from Seattle (SEA) to Stockholm (ARN) in December 2025 (see full year).
Return flights
| 15 Dec - 22 Dec | Turkish Airlines | ||
| 27 Dec - 04 Jan | Alaska Airlines | ||
| 18 Dec - 01 Jan | Alaska Airlines | ||
| 20 Dec - 28 Dec | Sun Country Airlines |
Also check the deals for one-way flights from Seattle to Stockholm in December.
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