AirHint found the following cheapest return flights from Seoul (GMP) to Honolulu (HNL) in September 2025 (see full year).

Return flights

29 Sep - 30 Sep	ANA
25 Sep - 02 Oct	Eastar Jet
28 Sep - 30 Sep	ANA
29 Sep - 15 Oct	ANA
22 Sep - 29 Sep	ANA
28 Sep - 01 Oct	ANA
28 Sep - 19 Oct	ANA
29 Sep - 02 Oct	ANA
28 Sep - 16 Oct	ANA
28 Sep - 02 Oct	ANA
29 Sep - 03 Oct	ANA
28 Sep - 03 Oct	ANA
22 Sep - 03 Oct	ANA
27 Sep - 30 Sep	ANA
27 Sep - 28 Sep	ANA
25 Sep - 28 Sep	ANA
26 Sep - 30 Sep	ANA
25 Sep - 29 Sep	ANA
25 Sep - 30 Sep	ANA
26 Sep - 29 Sep	Jeju Air

Also check the deals for one-way flights from Seoul to Honolulu 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 Seoul to Honolulu in September from 684€

Return flights