Cheapest one-way flights from Seattle to Kuala Lumpur in December from $618

AirHint found the following cheapest one-way flights from Seattle (SEA) to Kuala Lumpur (KUL) in December 2025 (see full year).

One-Way flights

16 Dec Korean Air
14 Dec China Airlines
13 Dec STARLUX Airlines
12 Dec STARLUX Airlines

Also check the deals for return flights from Seattle to Kuala Lumpur in December.

Skyscanner

The deals are updated regularly. The prices may go up as tickets are purchased by other travellers. Only the cheapest flights are offered. Select a price to book and secure these cheap prices.

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