AirHint found the following cheapest return flights from Seattle (SEA) to Kuala Lumpur (KUL) in August 2025 (see full year).

Return flights

26 Aug - 02 Sep	Korean Air
22 Aug - 07 Sep	Philippine Airlines
22 Aug - 31 Aug	Delta
30 Aug - 06 Sep	Korean Air
15 Aug - 07 Sep	Philippine Airlines
11 Aug - 31 Aug	Korean Air
11 Aug - 28 Aug	Korean Air
11 Aug - 30 Aug	Korean Air
15 Aug - 31 Aug	STARLUX Airlines
11 Aug - 29 Aug	Korean Air
08 Aug - 31 Aug	Korean Air
08 Aug - 24 Aug	Korean Air
22 Aug - 24 Aug	China Airlines
18 Aug - 23 Aug	Delta
27 Aug - 24 Sep	Philippine Airlines
29 Aug - 24 Sep	Philippine Airlines
31 Aug - 24 Sep	Philippine Airlines

Also check the deals for one-way flights from Seattle to Kuala Lumpur in August.

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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Cheapest return flights from Seattle to Kuala Lumpur in August from $706

Return flights