AirHint found the following cheapest return flights from Jakarta (CGK) to Seattle (SEA) in December 2026 (see full year).
Return flights
| 21 Dec - 04 Jan | Asiana Airlines | ||
| 16 Dec - 29 Dec | Singapore Airlines | ||
| 18 Dec - 31 Dec | STARLUX Airlines | ||
| 18 Dec - 25 Dec | EVA Air |
Also check the deals for one-way flights from Jakarta to Seattle in December.
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