AirHint found the following cheapest return flights from Jakarta (CGK) to Seattle (SEA) in September 2025 (see full year).

Return flights

09 Sep - 16 Sep	ANA
12 Sep - 17 Sep	Philippine Airlines
26 Sep - 03 Oct	Philippine Airlines
09 Sep - 03 Oct	Singapore Airlines
19 Sep - 28 Sep	Philippine Airlines
12 Sep - 14 Sep	EVA Air
08 Sep - 12 Sep	EVA Air
09 Sep - 08 Oct	EVA Air
04 Sep - 01 Oct	EVA Air
10 Sep - 01 Oct	EVA Air
07 Sep - 20 Sep	Asiana Airlines
22 Sep - 03 Oct	EVA Air
02 Sep - 02 Oct	EVA Air
27 Sep - 07 Oct	Delta
23 Sep - 01 Oct	ANA

Also check the deals for one-way flights from Jakarta to Seattle in September.

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 Jakarta to Seattle in September from 646€

Return flights