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

Return flights

30 Sep - 20 Oct	Alaska Airlines
03 Sep - 06 Sep	Air Premia	direct
15 Sep - 22 Sep	Air Premia	direct
17 Sep - 24 Sep	Air Premia	direct
16 Sep - 24 Sep	Zipair
12 Sep - 19 Sep	Alaska Airlines	direct
14 Sep - 21 Sep	Zipair
08 Sep - 15 Sep	Air Premia	direct
08 Sep - 22 Sep	Air Premia	direct
13 Sep - 20 Sep	Alaska Airlines	direct
12 Sep - 17 Sep	Alaska Airlines	direct
16 Sep - 30 Oct	Zipair
16 Sep - 30 Oct	Delta	direct
30 Sep - 13 Oct	Delta	direct
27 Sep - 04 Oct	United
27 Sep - 04 Oct	Air Premia	direct

Also check the deals for one-way flights from Honolulu to Seoul 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 Honolulu to Seoul in September from 604€

Return flights